DevVGA-SVGA3d-ogl.cpp@ 96407

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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	/* Enable to disassemble defined shaders. (Windows host only) */
33	#if defined(RT_OS_WINDOWS) && defined(DEBUG) && 0 /* Disabled as we don't have the DirectX SDK avaible atm. */
34	# define DUMP_SHADER_DISASSEMBLY
35	#endif
36	#ifdef DEBUG_bird
37	//# define RTMEM_WRAP_TO_EF_APIS
38	#endif
39	#define LOG_GROUP LOG_GROUP_DEV_VMSVGA
40	#define GL_SILENCE_DEPRECATION /* shut up deprecated warnings on darwin (10.15 sdk) */
41	#include <VBox/vmm/pdmdev.h>
42	#include <VBox/version.h>
43	#include <VBox/err.h>
44	#include <VBox/log.h>
45	#include <VBox/vmm/pgm.h>
46	#include <VBox/AssertGuest.h>
47
48	#include <iprt/assert.h>
49	#include <iprt/semaphore.h>
50	#include <iprt/uuid.h>
51	#include <iprt/mem.h>
52
53	#include <VBoxVideo.h> /* required by DevVGA.h */
54	#include <VBoxVideo3D.h>
55
56	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
57	#include "DevVGA.h"
58
59	#include "DevVGA-SVGA.h"
60	#include "DevVGA-SVGA3d.h"
61	#include "DevVGA-SVGA3d-internal.h"
62
63	#ifdef DUMP_SHADER_DISASSEMBLY
64	# include <d3dx9shader.h>
65	#endif
66
67	#include <stdlib.h>
68	#include <math.h>
69	#include <float.h> /* FLT_MIN */
70
71
72	/*********************************************************************************************************************************
73	* Defined Constants And Macros *
74	*********************************************************************************************************************************/
75	#ifndef VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE
76	# define VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE 1.0
77	#endif
78
79	#ifdef VMSVGA3D_DYNAMIC_LOAD
80	# define OGLGETPROCADDRESS glLdrGetProcAddress
81	#else
82	#ifdef RT_OS_WINDOWS
83	# define OGLGETPROCADDRESS MyWinGetProcAddress
84	DECLINLINE(PROC) MyWinGetProcAddress(const char *pszSymbol)
85	{
86	/* Khronos: [on failure] "some implementations will return other values. 1, 2, and 3 are used, as well as -1". */
87	PROC p = wglGetProcAddress(pszSymbol);
88	if (RT_VALID_PTR(p))
89	return p;
90	return 0;
91	}
92	#elif defined(RT_OS_DARWIN)
93	# include <dlfcn.h>
94	# define OGLGETPROCADDRESS MyNSGLGetProcAddress
95	/** Resolves an OpenGL symbol. */
96	static void MyNSGLGetProcAddress(const char pszSymbol)
97	{
98	/* Another copy in shaderapi.c. */
99	static void *s_pvImage = NULL;
100	if (s_pvImage == NULL)
101	s_pvImage = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
102	return s_pvImage ? dlsym(s_pvImage, pszSymbol) : NULL;
103	}
104
105	#else
106	# define OGLGETPROCADDRESS(x) glXGetProcAddress((const GLubyte *)x)
107	#endif
108	#endif
109
110	/* Invert y-coordinate for OpenGL's bottom left origin. */
111	#define D3D_TO_OGL_Y_COORD(ptrSurface, y_coordinate) (ptrSurface->paMipmapLevels[0].mipmapSize.height - (y_coordinate))
112	#define D3D_TO_OGL_Y_COORD_MIPLEVEL(ptrMipLevel, y_coordinate) (ptrMipLevel->size.height - (y_coordinate))
113
114	/**
115	* Macro for doing something and then checking for errors during initialization.
116	* Uses AssertLogRelMsg.
117	*/
118	#define VMSVGA3D_INIT_CHECKED(a_Expr) \
119	do \
120	{ \
121	a_Expr; \
122	GLenum iGlError = glGetError(); \
123	AssertLogRelMsg(iGlError == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x\n", #a_Expr, iGlError)); \
124	} while (0)
125
126	/**
127	* Macro for doing something and then checking for errors during initialization,
128	* doing the same in the other context when enabled.
129	*
130	* This will try both profiles in dual profile builds. Caller must be in the
131	* default context.
132	*
133	* Uses AssertLogRelMsg to indicate trouble.
134	*/
135	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
136	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) \
137	do \
138	{ \
139	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
140	a_Expr; \
141	GLenum iGlError = glGetError(); \
142	if (iGlError != GL_NO_ERROR) \
143	{ \
144	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pOtherCtx); \
145	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
146	a_Expr; \
147	GLenum iGlError2 = glGetError(); \
148	AssertLogRelMsg(iGlError2 == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x / %#x\n", #a_Expr, iGlError, iGlError2)); \
149	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pContext); \
150	} \
151	} while (0)
152	#else
153	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) VMSVGA3D_INIT_CHECKED(a_Expr)
154	#endif
155
156
157	/*********************************************************************************************************************************
158	* Global Variables *
159	*********************************************************************************************************************************/
160	/* Define the default light parameters as specified by MSDN. */
161	/** @todo move out; fetched from Wine */
162	const SVGA3dLightData vmsvga3d_default_light =
163	{
164	SVGA3D_LIGHTTYPE_DIRECTIONAL, /* type */
165	false, /* inWorldSpace */
166	{ 1.0f, 1.0f, 1.0f, 0.0f }, /* diffuse r,g,b,a */
167	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* specular r,g,b,a */
168	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* ambient r,g,b,a, */
169	{ 0.0f, 0.0f, 0.0f }, /* position x,y,z */
170	{ 0.0f, 0.0f, 1.0f }, /* direction x,y,z */
171	0.0f, /* range */
172	0.0f, /* falloff */
173	0.0f, 0.0f, 0.0f, /* attenuation 0,1,2 */
174	0.0f, /* theta */
175	0.0f /* phi */
176	};
177
178
179	/*********************************************************************************************************************************
180	* Internal Functions *
181	*********************************************************************************************************************************/
182	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid);
183	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid);
184	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha);
185	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData);
186	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4]);
187	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type);
188	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext);
189	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext, PVMSVGA3DSURFACE pSurface);
190
191	/* Generated by VBoxDef2LazyLoad from the VBoxSVGA3D.def and VBoxSVGA3DObjC.def files. */
192	extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErrInfo);
193
194
195	/**
196	* Checks if the given OpenGL extension is supported.
197	*
198	* @returns true if supported, false if not.
199	* @param pState The VMSVGA3d state.
200	* @param rsMinGLVersion The OpenGL version that introduced this feature
201	* into the core.
202	* @param pszWantedExtension The name of the OpenGL extension we want padded
203	* with one space at each end.
204	* @remarks Init time only.
205	*/
206	static bool vmsvga3dCheckGLExtension(PVMSVGA3DSTATE pState, float rsMinGLVersion, const char *pszWantedExtension)
207	{
208	RT_NOREF(rsMinGLVersion);
209	/* check padding. */
210	Assert(pszWantedExtension[0] == ' ');
211	Assert(pszWantedExtension[1] != ' ');
212	Assert(strchr(&pszWantedExtension[1], ' ') + 1 == strchr(pszWantedExtension, '\0'));
213
214	/* Look it up. */
215	bool fRet = false;
216	if (strstr(pState->pszExtensions, pszWantedExtension))
217	fRet = true;
218
219	/* Temporarily. Later start if (rsMinGLVersion != 0.0 && fActualGLVersion >= rsMinGLVersion) return true; */
220	#ifdef RT_OS_DARWIN
221	AssertMsg( rsMinGLVersion == 0.0
222	\|\| fRet == (pState->rsGLVersion >= rsMinGLVersion)
223	\|\| VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE == 2.1,
224	("%s actual:%d min:%d fRet=%d\n",
225	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
226	#else
227	AssertMsg(rsMinGLVersion == 0.0 \|\| fRet == (pState->rsGLVersion >= rsMinGLVersion),
228	("%s actual:%d min:%d fRet=%d\n",
229	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
230	#endif
231	return fRet;
232	}
233
234
235	/**
236	* Outputs GL_EXTENSIONS list to the release log.
237	*/
238	static void vmsvga3dLogRelExtensions(const char pszPrefix, const char pszExtensions)
239	{
240	/* OpenGL 3.0 interface (glGetString(GL_EXTENSIONS) return NULL). */
241	bool fBuffered = RTLogRelSetBuffering(true);
242
243	/*
244	* Determin the column widths first.
245	*/
246	size_t acchWidths[4] = { 1, 1, 1, 1 };
247	uint32_t i;
248	const char *psz = pszExtensions;
249	for (i = 0; ; i++)
250	{
251	while (*psz == ' ')
252	psz++;
253	if (!*psz)
254	break;
255
256	const char *pszEnd = strchr(psz, ' ');
257	AssertBreak(pszEnd);
258	size_t cch = pszEnd - psz;
259
260	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
261	if (acchWidths[iColumn] < cch)
262	acchWidths[iColumn] = cch;
263
264	psz = pszEnd;
265	}
266
267	/*
268	* Output it.
269	*/
270	LogRel(("VMSVGA3d: %sOpenGL extensions (%d):", pszPrefix, i));
271	psz = pszExtensions;
272	for (i = 0; ; i++)
273	{
274	while (*psz == ' ')
275	psz++;
276	if (!*psz)
277	break;
278
279	const char *pszEnd = strchr(psz, ' ');
280	AssertBreak(pszEnd);
281	size_t cch = pszEnd - psz;
282
283	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
284	if (iColumn == 0)
285	LogRel(("\nVMSVGA3d: %-.s", acchWidths[iColumn], cch, psz));
286	else if (iColumn != RT_ELEMENTS(acchWidths) - 1)
287	LogRel((" %-.s", acchWidths[iColumn], cch, psz));
288	else
289	LogRel((" %.*s", cch, psz));
290
291	psz = pszEnd;
292	}
293
294	RTLogRelSetBuffering(fBuffered);
295	LogRel(("\n"));
296	}
297
298	/**
299	* Gathers the GL_EXTENSIONS list, storing it as a space padded list at
300	* @a ppszExtensions.
301	*
302	* @returns VINF_SUCCESS or VERR_NO_STR_MEMORY
303	* @param ppszExtensions Pointer to the string pointer. Free with RTStrFree.
304	* @param fGLProfileVersion The OpenGL profile version.
305	*/
306	static int vmsvga3dGatherExtensions(char **ppszExtensions, float fGLProfileVersion)
307	{
308	int rc;
309	*ppszExtensions = NULL;
310
311	/*
312	* Try the old glGetString interface first.
313	*/
314	const char pszExtensions = (const char )glGetString(GL_EXTENSIONS);
315	if (pszExtensions)
316	{
317	rc = RTStrAAppendExN(ppszExtensions, 3, " ", (size_t)1, pszExtensions, RTSTR_MAX, " ", (size_t)1);
318	AssertLogRelRCReturn(rc, rc);
319	}
320	else
321	{
322	/*
323	* The new interface where each extension string is retrieved separately.
324	* Note! Cannot use VMSVGA3D_INIT_CHECKED_GL_GET_INTEGER_VALUE here because
325	* the above GL_EXTENSIONS error lingers on darwin. sucks.
326	*/
327	#ifndef GL_NUM_EXTENSIONS
328	# define GL_NUM_EXTENSIONS 0x821D
329	#endif
330	GLint cExtensions = 1024;
331	glGetIntegerv(GL_NUM_EXTENSIONS, &cExtensions);
332	Assert(cExtensions != 1024);
333
334	PFNGLGETSTRINGIPROC pfnGlGetStringi = (PFNGLGETSTRINGIPROC)OGLGETPROCADDRESS("glGetStringi");
335	AssertLogRelReturn(pfnGlGetStringi, VERR_NOT_SUPPORTED);
336
337	rc = RTStrAAppend(ppszExtensions, " ");
338	for (GLint i = 0; RT_SUCCESS(rc) && i < cExtensions; i++)
339	{
340	const char pszExt = (const char )pfnGlGetStringi(GL_EXTENSIONS, i);
341	if (pszExt)
342	rc = RTStrAAppendExN(ppszExtensions, 2, pfnGlGetStringi(GL_EXTENSIONS, i), RTSTR_MAX, " ", (size_t)1);
343	}
344	AssertRCReturn(rc, rc);
345	}
346
347	#if 1
348	/*
349	* Add extensions promoted into the core OpenGL profile.
350	*/
351	static const struct
352	{
353	float fGLVersion;
354	const char *pszzExtensions;
355	} s_aPromotedExtensions[] =
356	{
357	{
358	1.1f,
359	" GL_EXT_vertex_array \0"
360	" GL_EXT_polygon_offset \0"
361	" GL_EXT_blend_logic_op \0"
362	" GL_EXT_texture \0"
363	" GL_EXT_copy_texture \0"
364	" GL_EXT_subtexture \0"
365	" GL_EXT_texture_object \0"
366	" GL_ARB_framebuffer_object \0"
367	" GL_ARB_map_buffer_range \0"
368	" GL_ARB_vertex_array_object \0"
369	"\0"
370	},
371	{
372	1.2f,
373	" EXT_texture3D \0"
374	" EXT_bgra \0"
375	" EXT_packed_pixels \0"
376	" EXT_rescale_normal \0"
377	" EXT_separate_specular_color \0"
378	" SGIS_texture_edge_clamp \0"
379	" SGIS_texture_lod \0"
380	" EXT_draw_range_elements \0"
381	"\0"
382	},
383	{
384	1.3f,
385	" GL_ARB_texture_compression \0"
386	" GL_ARB_texture_cube_map \0"
387	" GL_ARB_multisample \0"
388	" GL_ARB_multitexture \0"
389	" GL_ARB_texture_env_add \0"
390	" GL_ARB_texture_env_combine \0"
391	" GL_ARB_texture_env_dot3 \0"
392	" GL_ARB_texture_border_clamp \0"
393	" GL_ARB_transpose_matrix \0"
394	"\0"
395	},
396	{
397	1.5f,
398	" GL_SGIS_generate_mipmap \0"
399	/" GL_NV_blend_equare \0"/
400	" GL_ARB_depth_texture \0"
401	" GL_ARB_shadow \0"
402	" GL_EXT_fog_coord \0"
403	" GL_EXT_multi_draw_arrays \0"
404	" GL_ARB_point_parameters \0"
405	" GL_EXT_secondary_color \0"
406	" GL_EXT_blend_func_separate \0"
407	" GL_EXT_stencil_wrap \0"
408	" GL_ARB_texture_env_crossbar \0"
409	" GL_EXT_texture_lod_bias \0"
410	" GL_ARB_texture_mirrored_repeat \0"
411	" GL_ARB_window_pos \0"
412	"\0"
413	},
414	{
415	1.6f,
416	" GL_ARB_vertex_buffer_object \0"
417	" GL_ARB_occlusion_query \0"
418	" GL_EXT_shadow_funcs \0"
419	},
420	{
421	2.0f,
422	" GL_ARB_shader_objects \0" /??/
423	" GL_ARB_vertex_shader \0" /??/
424	" GL_ARB_fragment_shader \0" /??/
425	" GL_ARB_shading_language_100 \0" /??/
426	" GL_ARB_draw_buffers \0"
427	" GL_ARB_texture_non_power_of_two \0"
428	" GL_ARB_point_sprite \0"
429	" GL_ATI_separate_stencil \0"
430	" GL_EXT_stencil_two_side \0"
431	"\0"
432	},
433	{
434	2.1f,
435	" GL_ARB_pixel_buffer_object \0"
436	" GL_EXT_texture_sRGB \0"
437	"\0"
438	},
439	{
440	3.0f,
441	" GL_ARB_framebuffer_object \0"
442	" GL_ARB_map_buffer_range \0"
443	" GL_ARB_vertex_array_object \0"
444	"\0"
445	},
446	{
447	3.1f,
448	" GL_ARB_copy_buffer \0"
449	" GL_ARB_uniform_buffer_object \0"
450	"\0"
451	},
452	{
453	3.2f,
454	" GL_ARB_vertex_array_bgra \0"
455	" GL_ARB_draw_elements_base_vertex \0"
456	" GL_ARB_fragment_coord_conventions \0"
457	" GL_ARB_provoking_vertex \0"
458	" GL_ARB_seamless_cube_map \0"
459	" GL_ARB_texture_multisample \0"
460	" GL_ARB_depth_clamp \0"
461	" GL_ARB_sync \0"
462	" GL_ARB_geometry_shader4 \0" /??/
463	"\0"
464	},
465	{
466	3.3f,
467	" GL_ARB_blend_func_extended \0"
468	" GL_ARB_sampler_objects \0"
469	" GL_ARB_explicit_attrib_location \0"
470	" GL_ARB_occlusion_query2 \0"
471	" GL_ARB_shader_bit_encoding \0"
472	" GL_ARB_texture_rgb10_a2ui \0"
473	" GL_ARB_texture_swizzle \0"
474	" GL_ARB_timer_query \0"
475	" GL_ARB_vertex_type_2_10_10_10_rev \0"
476	"\0"
477	},
478	{
479	4.0f,
480	" GL_ARB_texture_query_lod \0"
481	" GL_ARB_draw_indirect \0"
482	" GL_ARB_gpu_shader5 \0"
483	" GL_ARB_gpu_shader_fp64 \0"
484	" GL_ARB_shader_subroutine \0"
485	" GL_ARB_tessellation_shader \0"
486	" GL_ARB_texture_buffer_object_rgb32 \0"
487	" GL_ARB_texture_cube_map_array \0"
488	" GL_ARB_texture_gather \0"
489	" GL_ARB_transform_feedback2 \0"
490	" GL_ARB_transform_feedback3 \0"
491	"\0"
492	},
493	{
494	4.1f,
495	" GL_ARB_ES2_compatibility \0"
496	" GL_ARB_get_program_binary \0"
497	" GL_ARB_separate_shader_objects \0"
498	" GL_ARB_shader_precision \0"
499	" GL_ARB_vertex_attrib_64bit \0"
500	" GL_ARB_viewport_array \0"
501	"\0"
502	}
503	};
504
505	uint32_t cPromoted = 0;
506	for (uint32_t i = 0; i < RT_ELEMENTS(s_aPromotedExtensions) && s_aPromotedExtensions[i].fGLVersion <= fGLProfileVersion; i++)
507	{
508	const char *pszExt = s_aPromotedExtensions[i].pszzExtensions;
509	while (*pszExt)
510	{
511	# ifdef VBOX_STRICT
512	size_t cchExt = strlen(pszExt);
513	Assert(cchExt > 3);
514	Assert(pszExt[0] == ' ');
515	Assert(pszExt[1] != ' ');
516	Assert(pszExt[cchExt - 2] != ' ');
517	Assert(pszExt[cchExt - 1] == ' ');
518	# endif
519
520	if (strstr(*ppszExtensions, pszExt) == NULL)
521	{
522	if (cPromoted++ == 0)
523	{
524	rc = RTStrAAppend(ppszExtensions, " <promoted-extensions:> <promoted-extensions:> <promoted-extensions:> ");
525	AssertRCReturn(rc, rc);
526	}
527
528	rc = RTStrAAppend(ppszExtensions, pszExt);
529	AssertRCReturn(rc, rc);
530	}
531
532	pszExt = strchr(pszExt, '\0') + 1;
533	}
534	}
535	#endif
536
537	return VINF_SUCCESS;
538	}
539
540	/** Check whether this is an Intel GL driver.
541	*
542	* @returns true if this seems to be some Intel graphics.
543	*/
544	static bool vmsvga3dIsVendorIntel(void)
545	{
546	return RTStrNICmp((char *)glGetString(GL_VENDOR), "Intel", 5) == 0;
547	}
548
549	/**
550	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnSwitchInitProfile}
551	*/
552	static DECLCALLBACK(void) vmsvga3dShaderIfSwitchInitProfile(PVBOXVMSVGASHADERIF pThis, bool fOtherProfile)
553	{
554	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
555	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
556	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[fOtherProfile ? 2 : 1]);
557	#else
558	NOREF(pThis);
559	NOREF(fOtherProfile);
560	#endif
561	}
562
563
564	/**
565	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnGetNextExtension}
566	*/
567	static DECLCALLBACK(bool) vmsvga3dShaderIfGetNextExtension(PVBOXVMSVGASHADERIF pThis, void **ppvEnumCtx,
568	char *pszBuf, size_t cbBuf, bool fOtherProfile)
569	{
570	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
571	const char pszCur = ppvEnumCtx ? (const char )ppvEnumCtx
572	: fOtherProfile ? pState->pszOtherExtensions : pState->pszExtensions;
573	while (*pszCur == ' ')
574	pszCur++;
575	if (!*pszCur)
576	return false;
577
578	const char *pszEnd = strchr(pszCur, ' ');
579	AssertReturn(pszEnd, false);
580	size_t cch = pszEnd - pszCur;
581	if (cch < cbBuf)
582	{
583	memcpy(pszBuf, pszCur, cch);
584	pszBuf[cch] = '\0';
585	}
586	else if (cbBuf > 0)
587	{
588	memcpy(pszBuf, "<overflow>", RT_MIN(sizeof("<overflow>"), cbBuf));
589	pszBuf[cbBuf - 1] = '\0';
590	}
591
592	ppvEnumCtx = (void )pszEnd;
593	return true;
594	}
595
596
597	/**
598	* Initializes the VMSVGA3D state during VGA device construction.
599	*
600	* Failure are generally not fatal, 3D support will just be disabled.
601	*
602	* @returns VBox status code.
603	* @param pDevIns The device instance.
604	* @param pThis The shared VGA/VMSVGA state where svga.p3dState will be
605	* modified.
606	* @param pThisCC The VGA/VMSVGA state for ring-3.
607	*/
608	static DECLCALLBACK(int) vmsvga3dBackInit(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
609	{
610	int rc;
611	RT_NOREF(pDevIns, pThis);
612
613	AssertCompile(GL_TRUE == 1);
614	AssertCompile(GL_FALSE == 0);
615
616	#ifdef VMSVGA3D_DYNAMIC_LOAD
617	rc = glLdrInit(pDevIns);
618	if (RT_FAILURE(rc))
619	{
620	LogRel(("VMSVGA3d: Error loading OpenGL library and resolving necessary functions: %Rrc\n", rc));
621	return rc;
622	}
623	#endif
624
625	/*
626	* Load and resolve imports from the external shared libraries.
627	*/
628	RTERRINFOSTATIC ErrInfo;
629	rc = ExplicitlyLoadVBoxSVGA3D(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
630	if (RT_FAILURE(rc))
631	{
632	LogRel(("VMSVGA3d: Error loading VBoxSVGA3D and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
633	return rc;
634	}
635	#ifdef RT_OS_DARWIN
636	rc = ExplicitlyLoadVBoxSVGA3DObjC(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
637	if (RT_FAILURE(rc))
638	{
639	LogRel(("VMSVGA3d: Error loading VBoxSVGA3DObjC and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
640	return rc;
641	}
642	#endif
643
644	/*
645	* Allocate the state.
646	*/
647	pThisCC->svga.p3dState = (PVMSVGA3DSTATE)RTMemAllocZ(sizeof(VMSVGA3DSTATE));
648	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
649
650	#ifdef RT_OS_WINDOWS
651	/* Create event semaphore and async IO thread. */
652	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
653	rc = RTSemEventCreate(&pState->WndRequestSem);
654	if (RT_SUCCESS(rc))
655	{
656	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
657	"VMSVGA3DWND");
658	if (RT_SUCCESS(rc))
659	return VINF_SUCCESS;
660
661	/* bail out. */
662	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
663	RTSemEventDestroy(pState->WndRequestSem);
664	}
665	else
666	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
667	RTMemFree(pThisCC->svga.p3dState);
668	pThisCC->svga.p3dState = NULL;
669	return rc;
670	#else
671	return VINF_SUCCESS;
672	#endif
673	}
674
675	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
676	{
677	/* A strict approach to get a proc address as recommended by Khronos:
678	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
679	* - "If the function is an extension, we need to check to see if the extension is supported."
680	*/
681
682	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
683	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
684	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
685	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
686	} while(0)
687
688	/* Get an optional function address. LogRel on failure. */
689	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
690	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
691	if (!pState->ext.ProcName) \
692	{ \
693	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
694	AssertFailed(); \
695	} \
696	} while(0)
697
698	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
699	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
700	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
701	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
702	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
703	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
704	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
705	GLGETPROC_(PFNGLTEXSUBIMAGE3DPROC , glTexSubImage3D, "");
706	GLGETPROC_(PFNGLGETCOMPRESSEDTEXIMAGEPROC , glGetCompressedTexImage, "");
707	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
708	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
709	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC , glCompressedTexSubImage2D, "");
710	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC , glCompressedTexSubImage3D, "");
711	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
712	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
713	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
714	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
715	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
716	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
717	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
718	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
719	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
720	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
721	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
722	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
723	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
724	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
725	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
726	/* glGetProgramivARB determines implementation limits for the program
727	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
728	* It differs from glGetProgramiv, which returns a parameter from a program object.
729	*/
730	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
731	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
732	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
733	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
734	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
735	#endif
736	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
737	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
738	#endif
739	GLGETPROC_(PFNGLDRAWBUFFERSPROC , glDrawBuffers, "");
740	GLGETPROC_(PFNGLCREATESHADERPROC , glCreateShader, "");
741	GLGETPROC_(PFNGLSHADERSOURCEPROC , glShaderSource, "");
742	GLGETPROC_(PFNGLCOMPILESHADERPROC , glCompileShader, "");
743	GLGETPROC_(PFNGLGETSHADERIVPROC , glGetShaderiv, "");
744	GLGETPROC_(PFNGLGETSHADERINFOLOGPROC , glGetShaderInfoLog, "");
745	GLGETPROC_(PFNGLCREATEPROGRAMPROC , glCreateProgram, "");
746	GLGETPROC_(PFNGLATTACHSHADERPROC , glAttachShader, "");
747	GLGETPROC_(PFNGLLINKPROGRAMPROC , glLinkProgram, "");
748	GLGETPROC_(PFNGLGETPROGRAMIVPROC , glGetProgramiv, "");
749	GLGETPROC_(PFNGLGETPROGRAMINFOLOGPROC , glGetProgramInfoLog, "");
750	GLGETPROC_(PFNGLUSEPROGRAMPROC , glUseProgram, "");
751	GLGETPROC_(PFNGLGETUNIFORMLOCATIONPROC , glGetUniformLocation, "");
752	GLGETPROC_(PFNGLUNIFORM1IPROC , glUniform1i, "");
753	GLGETPROC_(PFNGLUNIFORM4FVPROC , glUniform4fv, "");
754	GLGETPROC_(PFNGLDETACHSHADERPROC , glDetachShader, "");
755	GLGETPROC_(PFNGLDELETESHADERPROC , glDeleteShader, "");
756	GLGETPROC_(PFNGLDELETEPROGRAMPROC , glDeleteProgram, "");
757
758	GLGETPROC_(PFNGLVERTEXATTRIB4FVPROC , glVertexAttrib4fv, "");
759	GLGETPROC_(PFNGLVERTEXATTRIB4UBVPROC , glVertexAttrib4ubv, "");
760	GLGETPROC_(PFNGLVERTEXATTRIB4NUBVPROC , glVertexAttrib4Nubv, "");
761	GLGETPROC_(PFNGLVERTEXATTRIB4SVPROC , glVertexAttrib4sv, "");
762	GLGETPROC_(PFNGLVERTEXATTRIB4NSVPROC , glVertexAttrib4Nsv, "");
763	GLGETPROC_(PFNGLVERTEXATTRIB4NUSVPROC , glVertexAttrib4Nusv, "");
764
765	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
766	if ( pState->rsGLVersion >= 3.0f
767	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
768	{
769	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
770	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
771	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
772	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
773	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
774	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
775	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
776	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
777	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
778	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
779	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
780	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
781	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
782	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
783	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
784	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
785	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
786	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
787	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
788	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
789	}
790
791	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
792	if (pState->rsGLVersion >= 3.1f)
793	{
794	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
795	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
796	}
797	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
798	{
799	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
800	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
801	}
802	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
803	{
804	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
805	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
806	}
807
808	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
809	if ( pState->rsGLVersion >= 3.2f
810	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
811	{
812	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
813	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
814	}
815
816	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
817	if ( pState->rsGLVersion >= 3.2f
818	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
819	{
820	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
821	}
822
823	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
824	if (pState->rsGLVersion >= 3.3f)
825	{
826	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
827	}
828	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
829	{
830	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
831	}
832
833	#undef GLGETPROCOPT_
834	#undef GLGETPROC_
835
836	return VINF_SUCCESS;
837	}
838
839
840	DECLINLINE(GLenum) vmsvga3dCubemapFaceFromIndex(uint32_t iFace)
841	{
842	GLint Face;
843	switch (iFace)
844	{
845	case 0: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; break;
846	case 1: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; break;
847	case 2: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; break;
848	case 3: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; break;
849	case 4: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; break;
850	default:
851	case 5: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; break;
852	}
853	return Face;
854	}
855
856
857	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
858	static DECLCALLBACK(int) vmsvga3dBackPowerOn(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
859	{
860	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
861	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
862	PVMSVGA3DCONTEXT pContext;
863	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
864	PVMSVGA3DCONTEXT pOtherCtx;
865	#endif
866	int rc;
867	RT_NOREF(pDevIns, pThis);
868
869	if (pState->rsGLVersion != 0.0)
870	return VINF_SUCCESS; /* already initialized (load state) */
871
872	/*
873	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
874	*/
875	rc = vmsvga3dContextDefineOgl(pThisCC, 1, VMSVGA3D_DEF_CTX_F_INIT);
876	AssertRCReturn(rc, rc);
877
878	pContext = pState->papContexts[1];
879	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
880
881	#ifdef VMSVGA3D_DYNAMIC_LOAD
882	/* Context is set and it is possible now to resolve extension functions. */
883	rc = glLdrGetExtFunctions(pDevIns);
884	if (RT_FAILURE(rc))
885	{
886	LogRel(("VMSVGA3d: Error resolving extension functions: %Rrc\n", rc));
887	return rc;
888	}
889	#endif
890
891	LogRel(("VMSVGA3d: OpenGL version: %s\n"
892	"VMSVGA3d: OpenGL Vendor: %s\n"
893	"VMSVGA3d: OpenGL Renderer: %s\n"
894	"VMSVGA3d: OpenGL shader language version: %s\n",
895	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
896	glGetString(GL_SHADING_LANGUAGE_VERSION)));
897
898	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
899	AssertRCReturn(rc, rc);
900	vmsvga3dLogRelExtensions("", pState->pszExtensions);
901
902	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
903
904
905	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
906	/*
907	* Get the extension list for the alternative profile so we can better
908	* figure out the shader model and stuff.
909	*/
910	rc = vmsvga3dContextDefineOgl(pThisCC, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
911	AssertLogRelRCReturn(rc, rc);
912	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
913
914	pOtherCtx = pState->papContexts[2];
915	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
916
917	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
918	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
919	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
920	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
921	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
922	glGetString(GL_SHADING_LANGUAGE_VERSION)));
923
924	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
925	AssertRCReturn(rc, rc);
926	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
927
928	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
929
930	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
931	#else
932	pState->pszOtherExtensions = (char *)"";
933	pState->rsOtherGLVersion = pState->rsGLVersion;
934	#endif
935
936	/*
937	* Resolve GL function pointers and store them in pState->ext.
938	*/
939	rc = vmsvga3dLoadGLFunctions(pState);
940	if (RT_FAILURE(rc))
941	{
942	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
943	return rc;
944	}
945
946	/*
947	* Initialize the capabilities with sensible defaults.
948	*/
949	pState->caps.maxActiveLights = 1;
950	pState->caps.maxTextures = 1;
951	pState->caps.maxClipDistances = 4;
952	pState->caps.maxColorAttachments = 1;
953	pState->caps.maxRectangleTextureSize = 2048;
954	pState->caps.maxTextureAnisotropy = 1;
955	pState->caps.maxVertexShaderInstructions = 1024;
956	pState->caps.maxFragmentShaderInstructions = 1024;
957	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
958	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
959	pState->caps.flPointSize[0] = 1;
960	pState->caps.flPointSize[1] = 1;
961
962	/*
963	* Query capabilities
964	*/
965	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
966	pState->caps.fTextureFilterAnisotropicSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_filter_anisotropic ");
967
968	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
969	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
970	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
971	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
972	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
973	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
974	#else
975	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
976	#endif
977	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
978	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
979	if (pState->caps.fTextureFilterAnisotropicSupported)
980	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
981	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
982
983	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
984	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
985	&pState->caps.maxFragmentShaderTemps));
986	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
987	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
988	&pState->caps.maxFragmentShaderInstructions));
989	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
990	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
991	&pState->caps.maxVertexShaderTemps));
992	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
993	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
994	&pState->caps.maxVertexShaderInstructions));
995
996	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
997	* ARB Assembly Language
998	* These are done through testing the presence of extensions. You should test them in this order:
999	* GL_NV_gpu_program4: SM 4.0 or better.
1000	* GL_NV_vertex_program3: SM 3.0 or better.
1001	* GL_ARB_fragment_program: SM 2.0 or better.
1002	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
1003	*
1004	*/
1005	/** @todo distinguish between vertex and pixel shaders??? */
1006	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
1007	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
1008	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
1009	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
1010	#else
1011	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
1012	#endif
1013	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
1014	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
1015	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
1016	{
1017	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
1018	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
1019	}
1020	else
1021	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
1022	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
1023	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
1024	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
1025	)
1026	{
1027	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
1028	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
1029	}
1030	else
1031	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
1032	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
1033	{
1034	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
1035	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
1036	}
1037	else
1038	{
1039	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
1040	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
1041	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
1042	}
1043
1044	/* Now check the shading language version, in case it indicates a higher supported version. */
1045	if (v >= 3.30f)
1046	{
1047	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_40);
1048	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_40);
1049	}
1050	else
1051	if (v >= 1.20f)
1052	{
1053	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_20);
1054	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_20);
1055	}
1056
1057	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
1058	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
1059	{
1060	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
1061	}
1062
1063	/*
1064	* Tweak capabilities.
1065	*/
1066	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
1067	if ( pState->caps.maxVertexShaderTemps < 32
1068	&& vmsvga3dIsVendorIntel())
1069	pState->caps.maxVertexShaderTemps = 32;
1070
1071	#if 0
1072	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
1073	SVGA3D_DEVCAP_QUERY_TYPES = 15,
1074	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
1075	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
1076	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
1077	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
1078	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
1079	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
1080	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
1081	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
1082	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
1083	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
1084	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
1085	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
1086	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
1087	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
1088	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
1089	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
1090	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
1091	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
1092	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
1093	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
1094	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
1095	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
1096	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
1097	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1098	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1099	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1100	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1101	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1102	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1103	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1104	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1105	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1106	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1107	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1108	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1109	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1110	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1111	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1112	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1113	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1114	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1115	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1116	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1117	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1118	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1119	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1120	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1121	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1122	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1123	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1124	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1125	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1126	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1127	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1128	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1129	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1130	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1131	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1132	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1133	SVGA3D_DEVCAP_SURFACEFMT_ATI1 = 82,
1134	SVGA3D_DEVCAP_SURFACEFMT_ATI2 = 83,
1135	#endif
1136
1137	LogRel(("VMSVGA3d: Capabilities:\n"));
1138	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d\n",
1139	pState->caps.maxActiveLights, pState->caps.maxTextures));
1140	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1141	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1142	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1143	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1144	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1145	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1146	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1147	pState->caps.maxFragmentShaderTemps,
1148	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1149	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1150	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d\n",
1151	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion));
1152	LogRel(("VMSVGA3d: fS3TCSupported=%-2d fTextureFilterAnisotropicSupported=%d\n",
1153	pState->caps.fS3TCSupported, pState->caps.fTextureFilterAnisotropicSupported));
1154
1155
1156	/* Initialize the shader library. */
1157	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1158	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1159	rc = ShaderInitLib(&pState->ShaderIf);
1160	AssertRC(rc);
1161
1162	/* Cleanup */
1163	rc = vmsvga3dBackContextDestroy(pThisCC, 1);
1164	AssertRC(rc);
1165	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1166	rc = vmsvga3dBackContextDestroy(pThisCC, 2);
1167	AssertRC(rc);
1168	#endif
1169
1170	if ( pState->rsGLVersion < 3.0
1171	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1172	{
1173	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1174	return VERR_NOT_IMPLEMENTED;
1175	}
1176
1177	return VINF_SUCCESS;
1178	}
1179
1180	static DECLCALLBACK(int) vmsvga3dBackReset(PVGASTATECC pThisCC)
1181	{
1182	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1183	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
1184
1185	/* Destroy all leftover surfaces. */
1186	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1187	{
1188	if (pState->papSurfaces[i]->id != SVGA3D_INVALID_ID)
1189	vmsvga3dSurfaceDestroy(pThisCC, pState->papSurfaces[i]->id);
1190	}
1191
1192	/* Destroy all leftover contexts. */
1193	for (uint32_t i = 0; i < pState->cContexts; i++)
1194	{
1195	if (pState->papContexts[i]->id != SVGA3D_INVALID_ID)
1196	vmsvga3dBackContextDestroy(pThisCC, pState->papContexts[i]->id);
1197	}
1198
1199	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1200	vmsvga3dContextDestroyOgl(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1201
1202	return VINF_SUCCESS;
1203	}
1204
1205	static DECLCALLBACK(int) vmsvga3dBackTerminate(PVGASTATECC pThisCC)
1206	{
1207	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1208	AssertReturn(pState, VERR_WRONG_ORDER);
1209	int rc;
1210
1211	rc = vmsvga3dBackReset(pThisCC);
1212	AssertRCReturn(rc, rc);
1213
1214	/* Terminate the shader library. */
1215	rc = ShaderDestroyLib();
1216	AssertRC(rc);
1217
1218	#ifdef RT_OS_WINDOWS
1219	/* Terminate the window creation thread. */
1220	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1221	AssertRCReturn(rc, rc);
1222
1223	RTSemEventDestroy(pState->WndRequestSem);
1224	#elif defined(RT_OS_DARWIN)
1225
1226	#elif defined(RT_OS_LINUX)
1227	/* signal to the thread that it is supposed to exit */
1228	pState->bTerminate = true;
1229	/* wait for it to terminate */
1230	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1231	AssertRC(rc);
1232	XCloseDisplay(pState->display);
1233	#endif
1234
1235	RTStrFree(pState->pszExtensions);
1236	pState->pszExtensions = NULL;
1237	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1238	RTStrFree(pState->pszOtherExtensions);
1239	#endif
1240	pState->pszOtherExtensions = NULL;
1241
1242	/* Free all leftover surface states. */
1243	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1244	{
1245	AssertPtr(pState->papSurfaces[i]);
1246	RTMemFree(pState->papSurfaces[i]);
1247	pState->papSurfaces[i] = NULL;
1248	}
1249
1250	/* Destroy all leftover contexts. */
1251	for (uint32_t i = 0; i < pState->cContexts; i++)
1252	{
1253	AssertPtr(pState->papContexts[i]);
1254	RTMemFree(pState->papContexts[i]);
1255	pState->papContexts[i] = NULL;
1256	}
1257
1258	if (pState->papSurfaces)
1259	{
1260	RTMemFree(pState->papSurfaces);
1261	pState->papSurfaces = NULL;
1262	}
1263
1264	if (pState->papContexts)
1265	{
1266	RTMemFree(pState->papContexts);
1267	pState->papContexts = NULL;
1268	}
1269
1270	pThisCC->svga.p3dState = NULL;
1271	RTMemFree(pState);
1272	return VINF_SUCCESS;
1273	}
1274
1275
1276	static DECLCALLBACK(void) vmsvga3dBackUpdateHostScreenViewport(PVGASTATECC pThisCC, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1277	{
1278	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1279	* redraw it. */
1280
1281	#ifdef RT_OS_DARWIN
1282	RT_NOREF(pOldViewport);
1283	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1284	if ( pState
1285	&& idScreen == 0
1286	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1287	{
1288	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1289	}
1290	#else
1291	RT_NOREF(pThisCC, idScreen, pOldViewport);
1292	#endif
1293	}
1294
1295
1296	/**
1297	* Worker for vmsvga3dBackQueryCaps that figures out supported operations for a
1298	* given surface format capability.
1299	*
1300	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1301	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1302	*
1303	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1304	* of implicit guest expectations:
1305	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1306	*/
1307	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1308	{
1309	uint32_t result = 0;
1310
1311	/** @todo missing:
1312	*
1313	* SVGA3DFORMAT_OP_PIXELSIZE
1314	*/
1315
1316	switch (idx3dCaps)
1317	{
1318	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1319	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1320	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1321	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1322	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1323	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1324	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1325	break;
1326
1327	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1328	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1329	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1330	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1331	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1332	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1333	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1334	break;
1335	}
1336
1337	/** @todo check hardware caps! */
1338	switch (idx3dCaps)
1339	{
1340	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1341	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1342	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1343	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1344	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1345	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1346	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1347	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1348	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1349	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1350	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1351	result \|= SVGA3DFORMAT_OP_TEXTURE
1352	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1353	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1354	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1355	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1356	\| SVGA3DFORMAT_OP_CUBETEXTURE
1357	\| SVGA3DFORMAT_OP_SRGBREAD
1358	\| SVGA3DFORMAT_OP_SRGBWRITE;
1359	break;
1360
1361	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1362	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1363	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1364	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1365	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1366	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1367	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1368	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1369	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1370	break;
1371
1372	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1373	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1374	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1375	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1376	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1377	result \|= SVGA3DFORMAT_OP_TEXTURE
1378	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1379	\| SVGA3DFORMAT_OP_CUBETEXTURE
1380	\| SVGA3DFORMAT_OP_SRGBREAD;
1381	break;
1382
1383	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1384	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1385	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1386	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1387	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1388	break;
1389
1390	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1391	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1392	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1393	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1394	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1395	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1396	result \|= SVGA3DFORMAT_OP_TEXTURE
1397	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1398	\| SVGA3DFORMAT_OP_CUBETEXTURE
1399	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1400	break;
1401
1402	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1403	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1404	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1405	result \|= SVGA3DFORMAT_OP_TEXTURE
1406	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1407	\| SVGA3DFORMAT_OP_CUBETEXTURE
1408	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1409	break;
1410
1411	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1412	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1413	result \|= SVGA3DFORMAT_OP_OFFSCREENPLAIN
1414	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1415	\| SVGA3DFORMAT_OP_TEXTURE;
1416	break;
1417
1418	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1419	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1420	break;
1421	}
1422	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1423
1424	return result;
1425	}
1426
1427	#if 0 /* unused */
1428	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1429	{
1430	RT_NOREF(pState3D, idx3dCaps);
1431
1432	/** @todo test this somehow */
1433	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1434
1435	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1436	return result;
1437	}
1438	#endif
1439
1440
1441	static DECLCALLBACK(int) vmsvga3dBackQueryCaps(PVGASTATECC pThisCC, SVGA3dDevCapIndex idx3dCaps, uint32_t *pu32Val)
1442	{
1443	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1444	AssertReturn(pState, VERR_NO_MEMORY);
1445	int rc = VINF_SUCCESS;
1446
1447	*pu32Val = 0;
1448
1449	/*
1450	* The capabilities access by current (2015-03-01) linux sources (gallium,
1451	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1452	* aren't access.
1453	*/
1454
1455	switch (idx3dCaps)
1456	{
1457	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1458	case SVGA3D_DEVCAP_3D:
1459	pu32Val = 1; / boolean? */
1460	break;
1461
1462	case SVGA3D_DEVCAP_MAX_LIGHTS:
1463	*pu32Val = pState->caps.maxActiveLights;
1464	break;
1465
1466	case SVGA3D_DEVCAP_MAX_TEXTURES:
1467	*pu32Val = pState->caps.maxTextures;
1468	break;
1469
1470	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1471	*pu32Val = pState->caps.maxClipDistances;
1472	break;
1473
1474	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1475	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1476	*pu32Val = pState->caps.vertexShaderVersion;
1477	break;
1478
1479	case SVGA3D_DEVCAP_VERTEX_SHADER:
1480	/* boolean? */
1481	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1482	break;
1483
1484	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1485	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1486	*pu32Val = pState->caps.fragmentShaderVersion;
1487	break;
1488
1489	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1490	/* boolean? */
1491	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1492	break;
1493
1494	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1495	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1496	/* Must be obsolete by now; surface format caps specify the same thing. */
1497	rc = VERR_INVALID_PARAMETER;
1498	break;
1499
1500	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1501	break;
1502
1503	/*
1504	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1505	* return TRUE. Even on physical hardware that does not support
1506	* these formats natively, the SVGA3D device will provide an emulation
1507	* which should be invisible to the guest OS.
1508	*/
1509	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1510	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1511	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1512	*pu32Val = 1;
1513	break;
1514
1515	case SVGA3D_DEVCAP_QUERY_TYPES:
1516	break;
1517
1518	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1519	break;
1520
1521	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1522	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1523	AssertCompile(sizeof(uint32_t) == sizeof(float));
1524	(float )pu32Val = pState->caps.flPointSize[1];
1525	break;
1526
1527	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1528	/** @todo ?? */
1529	rc = VERR_INVALID_PARAMETER;
1530	break;
1531
1532	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1533	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1534	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1535	*pu32Val = pState->caps.maxRectangleTextureSize;
1536	break;
1537
1538	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1539	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1540	//*pu32Val = pCaps->MaxVolumeExtent;
1541	*pu32Val = 256;
1542	break;
1543
1544	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1545	pu32Val = 32768; / hardcoded in Wine */
1546	break;
1547
1548	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1549	//*pu32Val = pCaps->MaxTextureAspectRatio;
1550	break;
1551
1552	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1553	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1554	*pu32Val = pState->caps.maxTextureAnisotropy;
1555	break;
1556
1557	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1558	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1559	pu32Val = 0xFFFFF; / hardcoded in Wine */
1560	break;
1561
1562	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1563	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1564	*pu32Val = pState->caps.maxVertexShaderInstructions;
1565	break;
1566
1567	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1568	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1569	break;
1570
1571	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1572	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1573	*pu32Val = pState->caps.maxVertexShaderTemps;
1574	break;
1575
1576	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1577	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1578	*pu32Val = pState->caps.maxFragmentShaderTemps;
1579	break;
1580
1581	case SVGA3D_DEVCAP_TEXTURE_OPS:
1582	break;
1583
1584	case SVGA3D_DEVCAP_DEAD4: /* SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES */
1585	break;
1586
1587	case SVGA3D_DEVCAP_DEAD5: /* SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES */
1588	break;
1589
1590	case SVGA3D_DEVCAP_DEAD7: /* SVGA3D_DEVCAP_ALPHATOCOVERAGE */
1591	break;
1592
1593	case SVGA3D_DEVCAP_DEAD6: /* SVGA3D_DEVCAP_SUPERSAMPLE */
1594	break;
1595
1596	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1597	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1598	break;
1599
1600	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1601	break;
1602
1603	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1604	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1605	*pu32Val = pState->caps.maxColorAttachments;
1606	break;
1607
1608	/*
1609	* This is the maximum number of SVGA context IDs that the guest
1610	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1611	*/
1612	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1613	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1614	break;
1615
1616	/*
1617	* This is the maximum number of SVGA surface IDs that the guest
1618	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1619	*/
1620	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1621	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1622	break;
1623
1624	#if 0 /* Appeared more recently, not yet implemented. */
1625	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1626	case SVGA3D_DEVCAP_LINE_AA:
1627	break;
1628	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1629	case SVGA3D_DEVCAP_LINE_STIPPLE:
1630	break;
1631	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1632	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1633	break;
1634	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1635	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1636	break;
1637	#endif
1638
1639	/*
1640	* Supported surface formats.
1641	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1642	*/
1643	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1644	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1645	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1646	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1647	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1648	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1649	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1650	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1651	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1652	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1653	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1654	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1655	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1656	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1657	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1658	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1659	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1660	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1661	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1662	break;
1663
1664	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1665	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1666	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1667	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1668	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1669	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1670	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1671	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1672	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1673	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1674	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1675	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1676	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1677	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1678	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1679	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1680	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1681	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1682	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1683	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1684	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1685	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1686	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1687	break;
1688
1689	/* Linux: Not referenced in current sources. */
1690	case SVGA3D_DEVCAP_SURFACEFMT_ATI1:
1691	case SVGA3D_DEVCAP_SURFACEFMT_ATI2:
1692	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1693	rc = VERR_INVALID_PARAMETER;
1694	*pu32Val = 0;
1695	break;
1696
1697	default:
1698	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1699	rc = VERR_INVALID_PARAMETER;
1700	break;
1701	}
1702
1703	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1704	return rc;
1705	}
1706
1707	/**
1708	* Convert SVGA format value to its OpenGL equivalent
1709	*
1710	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1711	* help from wined3dformat_from_d3dformat().
1712	*/
1713	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1714	{
1715	#if 0
1716	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1717	#else
1718	#define AssertTestFmt(f) do {} while(0)
1719	#endif
1720	/* Init cbBlockGL for non-emulated formats. */
1721	pSurface->cbBlockGL = pSurface->cbBlock;
1722
1723	switch (format)
1724	{
1725	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1726	pSurface->internalFormatGL = GL_RGB8;
1727	pSurface->formatGL = GL_BGRA;
1728	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1729	break;
1730	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1731	pSurface->internalFormatGL = GL_RGBA8;
1732	pSurface->formatGL = GL_BGRA;
1733	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1734	break;
1735	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1736	pSurface->internalFormatGL = GL_RGB5;
1737	pSurface->formatGL = GL_RGB;
1738	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1739	AssertTestFmt(SVGA3D_R5G6B5);
1740	break;
1741	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1742	pSurface->internalFormatGL = GL_RGB5;
1743	pSurface->formatGL = GL_BGRA;
1744	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1745	AssertTestFmt(SVGA3D_X1R5G5B5);
1746	break;
1747	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1748	pSurface->internalFormatGL = GL_RGB5_A1;
1749	pSurface->formatGL = GL_BGRA;
1750	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1751	AssertTestFmt(SVGA3D_A1R5G5B5);
1752	break;
1753	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1754	pSurface->internalFormatGL = GL_RGBA4;
1755	pSurface->formatGL = GL_BGRA;
1756	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1757	AssertTestFmt(SVGA3D_A4R4G4B4);
1758	break;
1759
1760	case SVGA3D_R8G8B8A8_UNORM:
1761	pSurface->internalFormatGL = GL_RGBA8;
1762	pSurface->formatGL = GL_RGBA;
1763	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1764	break;
1765
1766	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1767	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1768	pSurface->formatGL = GL_DEPTH_COMPONENT;
1769	pSurface->typeGL = GL_UNSIGNED_INT;
1770	break;
1771	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1772	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1773	pSurface->formatGL = GL_DEPTH_COMPONENT;
1774	pSurface->typeGL = GL_UNSIGNED_SHORT;
1775	AssertTestFmt(SVGA3D_Z_D16);
1776	break;
1777	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1778	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1779	pSurface->formatGL = GL_DEPTH_STENCIL;
1780	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1781	break;
1782	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1783	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1784	pSurface->formatGL = GL_DEPTH_STENCIL;
1785	pSurface->typeGL = GL_UNSIGNED_SHORT;
1786	/** @todo Wine sources hints at no hw support for this, so test this one! */
1787	AssertTestFmt(SVGA3D_Z_D15S1);
1788	break;
1789	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1790	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1791	pSurface->formatGL = GL_DEPTH_COMPONENT;
1792	pSurface->typeGL = GL_UNSIGNED_INT;
1793	AssertTestFmt(SVGA3D_Z_D24X8);
1794	break;
1795
1796	/* Advanced D3D9 depth formats. */
1797	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1798	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1799	pSurface->formatGL = GL_DEPTH_COMPONENT;
1800	pSurface->typeGL = GL_HALF_FLOAT;
1801	break;
1802
1803	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1804	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1805	pSurface->formatGL = GL_DEPTH_COMPONENT;
1806	pSurface->typeGL = GL_FLOAT; /* ??? */
1807	break;
1808
1809	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1810	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1811	pSurface->formatGL = GL_DEPTH_STENCIL;
1812	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1813	break;
1814
1815	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1816	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1817	pSurface->formatGL = GL_RGBA; /* not used */
1818	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1819	break;
1820
1821	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1822	/* "DXT2 and DXT3 are the same from an API perspective." */
1823	RT_FALL_THRU();
1824	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1825	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1826	pSurface->formatGL = GL_RGBA; /* not used */
1827	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1828	break;
1829
1830	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1831	/* "DXT4 and DXT5 are the same from an API perspective." */
1832	RT_FALL_THRU();
1833	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1834	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1835	pSurface->formatGL = GL_RGBA; /* not used */
1836	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1837	break;
1838
1839	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1840	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1841	pSurface->formatGL = GL_LUMINANCE;
1842	pSurface->typeGL = GL_UNSIGNED_BYTE;
1843	break;
1844
1845	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1846	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1847	pSurface->formatGL = GL_LUMINANCE;
1848	pSurface->typeGL = GL_UNSIGNED_SHORT;
1849	break;
1850
1851	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1852	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1853	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1854	pSurface->typeGL = GL_UNSIGNED_BYTE;
1855	break;
1856
1857	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1858	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1859	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1860	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1861	break;
1862
1863	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1864	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1865	pSurface->formatGL = GL_ALPHA;
1866	pSurface->typeGL = GL_UNSIGNED_BYTE;
1867	break;
1868
1869	#if 0
1870
1871	/* Bump-map formats */
1872	case SVGA3D_BUMPU8V8:
1873	return D3DFMT_V8U8;
1874	case SVGA3D_BUMPL6V5U5:
1875	return D3DFMT_L6V5U5;
1876	case SVGA3D_BUMPX8L8V8U8:
1877	return D3DFMT_X8L8V8U8;
1878	case SVGA3D_FORMAT_DEAD1:
1879	/* No corresponding D3D9 equivalent. */
1880	AssertFailedReturn(D3DFMT_UNKNOWN);
1881	/* signed bump-map formats */
1882	case SVGA3D_V8U8:
1883	return D3DFMT_V8U8;
1884	case SVGA3D_Q8W8V8U8:
1885	return D3DFMT_Q8W8V8U8;
1886	case SVGA3D_CxV8U8:
1887	return D3DFMT_CxV8U8;
1888	/* mixed bump-map formats */
1889	case SVGA3D_X8L8V8U8:
1890	return D3DFMT_X8L8V8U8;
1891	case SVGA3D_A2W10V10U10:
1892	return D3DFMT_A2W10V10U10;
1893	#endif
1894
1895	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1896	pSurface->internalFormatGL = GL_RGBA16F;
1897	pSurface->formatGL = GL_RGBA;
1898	#if 0 /* bird: wine uses half float, sounds correct to me... */
1899	pSurface->typeGL = GL_FLOAT;
1900	#else
1901	pSurface->typeGL = GL_HALF_FLOAT;
1902	AssertTestFmt(SVGA3D_ARGB_S10E5);
1903	#endif
1904	break;
1905
1906	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1907	pSurface->internalFormatGL = GL_RGBA32F;
1908	pSurface->formatGL = GL_RGBA;
1909	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1910	break;
1911
1912	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1913	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1914	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1915	pSurface->formatGL = GL_RGBA;
1916	#else
1917	pSurface->formatGL = GL_BGRA;
1918	#endif
1919	pSurface->typeGL = GL_UNSIGNED_INT;
1920	AssertTestFmt(SVGA3D_A2R10G10B10);
1921	break;
1922
1923
1924	/* Single- and dual-component floating point formats */
1925	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1926	pSurface->internalFormatGL = GL_R16F;
1927	pSurface->formatGL = GL_RED;
1928	#if 0 /* bird: wine uses half float, sounds correct to me... */
1929	pSurface->typeGL = GL_FLOAT;
1930	#else
1931	pSurface->typeGL = GL_HALF_FLOAT;
1932	AssertTestFmt(SVGA3D_R_S10E5);
1933	#endif
1934	break;
1935	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1936	pSurface->internalFormatGL = GL_R32F;
1937	pSurface->formatGL = GL_RED;
1938	pSurface->typeGL = GL_FLOAT;
1939	break;
1940	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1941	pSurface->internalFormatGL = GL_RG16F;
1942	pSurface->formatGL = GL_RG;
1943	#if 0 /* bird: wine uses half float, sounds correct to me... */
1944	pSurface->typeGL = GL_FLOAT;
1945	#else
1946	pSurface->typeGL = GL_HALF_FLOAT;
1947	AssertTestFmt(SVGA3D_RG_S10E5);
1948	#endif
1949	break;
1950	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1951	pSurface->internalFormatGL = GL_RG32F;
1952	pSurface->formatGL = GL_RG;
1953	pSurface->typeGL = GL_FLOAT;
1954	break;
1955
1956	/*
1957	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1958	* the most efficient format to use when creating new surfaces
1959	* expressly for index or vertex data.
1960	*/
1961	case SVGA3D_BUFFER:
1962	pSurface->internalFormatGL = -1;
1963	pSurface->formatGL = -1;
1964	pSurface->typeGL = -1;
1965	break;
1966
1967	#if 0
1968	return D3DFMT_UNKNOWN;
1969
1970	case SVGA3D_V16U16:
1971	return D3DFMT_V16U16;
1972	#endif
1973
1974	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1975	pSurface->internalFormatGL = GL_RG16;
1976	pSurface->formatGL = GL_RG;
1977	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1978	pSurface->typeGL = GL_UNSIGNED_INT;
1979	#else
1980	pSurface->typeGL = GL_UNSIGNED_SHORT;
1981	AssertTestFmt(SVGA3D_G16R16);
1982	#endif
1983	break;
1984
1985	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1986	pSurface->internalFormatGL = GL_RGBA16;
1987	pSurface->formatGL = GL_RGBA;
1988	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1989	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1990	#else
1991	pSurface->typeGL = GL_UNSIGNED_SHORT;
1992	AssertTestFmt(SVGA3D_A16B16G16R16);
1993	#endif
1994	break;
1995
1996	case SVGA3D_R8G8B8A8_SNORM:
1997	pSurface->internalFormatGL = GL_RGB8;
1998	pSurface->formatGL = GL_BGRA;
1999	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
2000	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
2001	break;
2002	case SVGA3D_R16G16_UNORM:
2003	pSurface->internalFormatGL = GL_RG16;
2004	pSurface->formatGL = GL_RG;
2005	pSurface->typeGL = GL_UNSIGNED_SHORT;
2006	AssertTestFmt(SVGA3D_R16G16_UNORM);
2007	break;
2008
2009	/* Packed Video formats */
2010	case SVGA3D_UYVY:
2011	case SVGA3D_YUY2:
2012	/* Use a BRGA texture to hold the data and convert it to an actual BGRA. */
2013	pSurface->fEmulated = true;
2014	pSurface->internalFormatGL = GL_RGBA8;
2015	pSurface->formatGL = GL_BGRA;
2016	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
2017	pSurface->cbBlockGL = 4 * pSurface->cxBlock * pSurface->cyBlock;
2018	break;
2019
2020	#if 0
2021	/* Planar video formats */
2022	case SVGA3D_NV12:
2023	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
2024
2025	/* Video format with alpha */
2026	case SVGA3D_FORMAT_DEAD2: /* Old SVGA3D_AYUV */
2027
2028	case SVGA3D_ATI1:
2029	case SVGA3D_ATI2:
2030	/* Unknown; only in DX10 & 11 */
2031	break;
2032	#endif
2033	default:
2034	AssertMsgFailed(("Unsupported format %d\n", format));
2035	break;
2036	}
2037	#undef AssertTestFmt
2038	}
2039
2040
2041	#if 0
2042	/**
2043	* Convert SVGA multi sample count value to its D3D equivalent
2044	*/
2045	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
2046	{
2047	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
2048	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
2049
2050	if (multisampleCount > 16)
2051	return D3DMULTISAMPLE_NONE;
2052
2053	/** @todo exact same mapping as d3d? */
2054	return (D3DMULTISAMPLE_TYPE)multisampleCount;
2055	}
2056	#endif
2057
2058	/**
2059	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
2060	*
2061	* @param pThisCC The device state.
2062	* @param fClearCOTableEntry Not relevant for this backend.
2063	* @param pSurface The surface being destroyed.
2064	*/
2065	static DECLCALLBACK(void) vmsvga3dBackSurfaceDestroy(PVGASTATECC pThisCC, bool fClearCOTableEntry, PVMSVGA3DSURFACE pSurface)
2066	{
2067	RT_NOREF(fClearCOTableEntry);
2068
2069	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2070	AssertReturnVoid(pState);
2071
2072	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2073	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2074
2075	switch (pSurface->enmOGLResType)
2076	{
2077	case VMSVGA3D_OGLRESTYPE_BUFFER:
2078	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
2079	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
2080	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2081	break;
2082
2083	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2084	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
2085	glDeleteTextures(1, &pSurface->oglId.texture);
2086	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2087	if (pSurface->fEmulated)
2088	{
2089	if (pSurface->idEmulated)
2090	{
2091	glDeleteTextures(1, &pSurface->idEmulated);
2092	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2093	}
2094	}
2095	else
2096	{
2097	Assert(!pSurface->idEmulated);
2098	}
2099	break;
2100
2101	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
2102	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
2103	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
2104	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2105	break;
2106
2107	default:
2108	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
2109	("hint=%#x, type=%d\n",
2110	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
2111	break;
2112	}
2113	}
2114
2115
2116	static DECLCALLBACK(void) vmsvga3dBackSurfaceInvalidateImage(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface, uint32_t uFace, uint32_t uMipmap)
2117	{
2118	RT_NOREF(pThisCC, pSurface, uFace, uMipmap);
2119	}
2120
2121
2122	static DECLCALLBACK(int) vmsvga3dBackSurfaceCopy(PVGASTATECC pThisCC, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src,
2123	uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
2124	{
2125	int rc;
2126
2127	LogFunc(("Copy %d boxes from sid=%u face=%u mipmap=%u to sid=%u face=%u mipmap=%u\n",
2128	cCopyBoxes, src.sid, src.face, src.mipmap, dest.sid, dest.face, dest.mipmap));
2129
2130	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2131	AssertReturn(pState, VERR_INVALID_STATE);
2132
2133	PVMSVGA3DSURFACE pSurfaceSrc;
2134	rc = vmsvga3dSurfaceFromSid(pState, src.sid, &pSurfaceSrc);
2135	AssertRCReturn(rc, rc);
2136
2137	PVMSVGA3DSURFACE pSurfaceDst;
2138	rc = vmsvga3dSurfaceFromSid(pState, dest.sid, &pSurfaceDst);
2139	AssertRCReturn(rc, rc);
2140
2141	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceSrc))
2142	{
2143	/* The source surface is still in memory. */
2144	PVMSVGA3DMIPMAPLEVEL pMipmapLevelSrc;
2145	rc = vmsvga3dMipmapLevel(pSurfaceSrc, src.face, src.mipmap, &pMipmapLevelSrc);
2146	AssertRCReturn(rc, rc);
2147
2148	PVMSVGA3DMIPMAPLEVEL pMipmapLevelDst;
2149	rc = vmsvga3dMipmapLevel(pSurfaceDst, dest.face, dest.mipmap, &pMipmapLevelDst);
2150	AssertRCReturn(rc, rc);
2151
2152	/* The copy operation is performed on the shared context. */
2153	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2154	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2155
2156	/* Use glTexSubImage to upload the data to the destination texture.
2157	* The latter must be an OpenGL texture.
2158	*/
2159	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceDst))
2160	{
2161	LogFunc(("dest sid=%u type=0x%x format=%d -> create texture\n", dest.sid, pSurfaceDst->f.s.surface1Flags, pSurfaceDst->format));
2162	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, pContext->id, pSurfaceDst);
2163	AssertRCReturn(rc, rc);
2164	}
2165
2166	GLenum target;
2167	if (pSurfaceDst->targetGL == GL_TEXTURE_CUBE_MAP)
2168	target = vmsvga3dCubemapFaceFromIndex(dest.face);
2169	else
2170	{
2171	AssertMsg(pSurfaceDst->targetGL == GL_TEXTURE_2D, ("Test %#x\n", pSurfaceDst->targetGL));
2172	target = pSurfaceDst->targetGL;
2173	}
2174
2175	/* Save the unpacking parameters and set what we need here. */
2176	VMSVGAPACKPARAMS SavedParams;
2177	vmsvga3dOglSetUnpackParams(pState, pContext,
2178	pMipmapLevelSrc->mipmapSize.width,
2179	target == GL_TEXTURE_3D ? pMipmapLevelSrc->mipmapSize.height : 0,
2180	&SavedParams);
2181
2182	glBindTexture(pSurfaceDst->targetGL, pSurfaceDst->oglId.texture);
2183	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2184
2185	for (uint32_t i = 0; i < cCopyBoxes; ++i)
2186	{
2187	SVGA3dCopyBox clipBox = pBox[i];
2188	vmsvgaR3ClipCopyBox(&pMipmapLevelSrc->mipmapSize, &pMipmapLevelDst->mipmapSize, &clipBox);
2189	if ( !clipBox.w
2190	\|\| !clipBox.h
2191	\|\| !clipBox.d)
2192	{
2193	LogFunc(("Skipped empty box.\n"));
2194	continue;
2195	}
2196
2197	LogFunc(("copy box %d,%d,%d %dx%d to %d,%d,%d\n",
2198	clipBox.srcx, clipBox.srcy, clipBox.srcz, clipBox.w, clipBox.h, clipBox.x, clipBox.y, clipBox.z));
2199
2200	uint32_t const u32BlockX = clipBox.srcx / pSurfaceSrc->cxBlock;
2201	uint32_t const u32BlockY = clipBox.srcy / pSurfaceSrc->cyBlock;
2202	uint32_t const u32BlockZ = clipBox.srcz;
2203	Assert(u32BlockX * pSurfaceSrc->cxBlock == clipBox.srcx);
2204	Assert(u32BlockY * pSurfaceSrc->cyBlock == clipBox.srcy);
2205
2206	uint8_t const pSrcBits = (uint8_t )pMipmapLevelSrc->pSurfaceData
2207	+ pMipmapLevelSrc->cbSurfacePlane * u32BlockZ
2208	+ pMipmapLevelSrc->cbSurfacePitch * u32BlockY
2209	+ pSurfaceSrc->cbBlock * u32BlockX;
2210
2211	if (target == GL_TEXTURE_3D)
2212	{
2213	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2214	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2215	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2216	{
2217	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2218	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2219	uint32_t const imageSize = cBlocksX * cBlocksY * clipBox.d * pSurfaceSrc->cbBlock;
2220	pState->ext.glCompressedTexSubImage3D(target, dest.mipmap,
2221	clipBox.x, clipBox.y, clipBox.z,
2222	clipBox.w, clipBox.h, clipBox.d,
2223	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2224	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2225	}
2226	else
2227	{
2228	pState->ext.glTexSubImage3D(target, dest.mipmap,
2229	clipBox.x, clipBox.y, clipBox.z,
2230	clipBox.w, clipBox.h, clipBox.d,
2231	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2232	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2233	}
2234	}
2235	else
2236	{
2237	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2238	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2239	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2240	{
2241	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2242	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2243	uint32_t const imageSize = cBlocksX * cBlocksY * pSurfaceSrc->cbBlock;
2244	pState->ext.glCompressedTexSubImage2D(target, dest.mipmap,
2245	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2246	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2247	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2248	}
2249	else
2250	{
2251	glTexSubImage2D(target, dest.mipmap,
2252	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2253	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2254	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2255	}
2256	}
2257	}
2258
2259	glBindTexture(pSurfaceDst->targetGL, 0);
2260	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2261
2262	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2263
2264	return VINF_SUCCESS;
2265	}
2266
2267	PVGASTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVGASTATE);
2268	for (uint32_t i = 0; i < cCopyBoxes; i++)
2269	{
2270	SVGA3dBox destBox, srcBox;
2271
2272	srcBox.x = pBox[i].srcx;
2273	srcBox.y = pBox[i].srcy;
2274	srcBox.z = pBox[i].srcz;
2275	srcBox.w = pBox[i].w;
2276	srcBox.h = pBox[i].h;
2277	srcBox.d = pBox[i].d;
2278
2279	destBox.x = pBox[i].x;
2280	destBox.y = pBox[i].y;
2281	destBox.z = pBox[i].z;
2282	destBox.w = pBox[i].w;
2283	destBox.h = pBox[i].h;
2284	destBox.d = pBox[i].d;
2285
2286	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2287	rc = vmsvga3dSurfaceStretchBlt(pThis, pThisCC, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2288	AssertRCReturn(rc, rc);
2289	}
2290	return VINF_SUCCESS;
2291	}
2292
2293
2294	/**
2295	* Saves texture unpacking parameters and loads the specified ones.
2296	*
2297	* @param pState The VMSVGA3D state structure.
2298	* @param pContext The active context.
2299	* @param cxRow The number of pixels in a row. 0 for the entire width.
2300	* @param cyImage The height of the image in pixels. 0 for the entire height.
2301	* @param pSave Where to save stuff.
2302	*/
2303	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, GLint cxRow, GLint cyImage,
2304	PVMSVGAPACKPARAMS pSave)
2305	{
2306	RT_NOREF(pState);
2307
2308	/*
2309	* Save (ignore errors, setting the defaults we want and avoids restore).
2310	*/
2311	pSave->iAlignment = 1;
2312	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2313	pSave->cxRow = 0;
2314	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2315	pSave->cyImage = 0;
2316	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage), pState, pContext);
2317
2318	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2319	pSave->fSwapBytes = GL_FALSE;
2320	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2321	Assert(pSave->fSwapBytes == GL_FALSE);
2322
2323	pSave->fLsbFirst = GL_FALSE;
2324	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2325	Assert(pSave->fLsbFirst == GL_FALSE);
2326
2327	pSave->cSkipRows = 0;
2328	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2329	Assert(pSave->cSkipRows == 0);
2330
2331	pSave->cSkipPixels = 0;
2332	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2333	Assert(pSave->cSkipPixels == 0);
2334
2335	pSave->cSkipImages = 0;
2336	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2337	Assert(pSave->cSkipImages == 0);
2338
2339	VMSVGA3D_CLEAR_GL_ERRORS();
2340	#endif
2341
2342	/*
2343	* Setup unpack.
2344	*
2345	* Note! We use 1 as alignment here because we currently don't do any
2346	* aligning of line pitches anywhere.
2347	*/
2348	pSave->fChanged = 0;
2349	if (pSave->iAlignment != 1)
2350	{
2351	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2352	pSave->fChanged \|= VMSVGAPACKPARAMS_ALIGNMENT;
2353	}
2354	if (pSave->cxRow != cxRow)
2355	{
2356	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, cxRow), pState, pContext);
2357	pSave->fChanged \|= VMSVGAPACKPARAMS_ROW_LENGTH;
2358	}
2359	if (pSave->cyImage != cyImage)
2360	{
2361	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, cyImage), pState, pContext);
2362	pSave->fChanged \|= VMSVGAPACKPARAMS_IMAGE_HEIGHT;
2363	}
2364	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2365	if (pSave->fSwapBytes != 0)
2366	{
2367	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2368	pSave->fChanged \|= VMSVGAPACKPARAMS_SWAP_BYTES;
2369	}
2370	if (pSave->fLsbFirst != 0)
2371	{
2372	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2373	pSave->fChanged \|= VMSVGAPACKPARAMS_LSB_FIRST;
2374	}
2375	if (pSave->cSkipRows != 0)
2376	{
2377	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2378	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_ROWS;
2379	}
2380	if (pSave->cSkipPixels != 0)
2381	{
2382	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2383	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_PIXELS;
2384	}
2385	if (pSave->cSkipImages != 0)
2386	{
2387	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2388	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_IMAGES;
2389	}
2390	#endif
2391	}
2392
2393
2394	/**
2395	* Restores texture unpacking parameters.
2396	*
2397	* @param pState The VMSVGA3D state structure.
2398	* @param pContext The active context.
2399	* @param pSave Where stuff was saved.
2400	*/
2401	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext,
2402	PCVMSVGAPACKPARAMS pSave)
2403	{
2404	RT_NOREF(pState);
2405
2406	if (pSave->fChanged & VMSVGAPACKPARAMS_ALIGNMENT)
2407	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2408	if (pSave->fChanged & VMSVGAPACKPARAMS_ROW_LENGTH)
2409	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2410	if (pSave->fChanged & VMSVGAPACKPARAMS_IMAGE_HEIGHT)
2411	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2412	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2413	if (pSave->fChanged & VMSVGAPACKPARAMS_SWAP_BYTES)
2414	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2415	if (pSave->fChanged & VMSVGAPACKPARAMS_LSB_FIRST)
2416	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2417	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_ROWS)
2418	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2419	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_PIXELS)
2420	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2421	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_IMAGES)
2422	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2423	#endif
2424	}
2425
2426	/**
2427	* Create D3D/OpenGL texture object for the specified surface.
2428	*
2429	* Surfaces are created when needed.
2430	*
2431	* @param pThisCC The device context.
2432	* @param pContext The context.
2433	* @param idAssociatedContext Probably the same as pContext->id.
2434	* @param pSurface The surface to create the texture for.
2435	*/
2436	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2437	PVMSVGA3DSURFACE pSurface)
2438	{
2439	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2440
2441	RT_NOREF(idAssociatedContext);
2442
2443	LogFunc(("sid=%u\n", pSurface->id));
2444
2445	uint32_t const numMipLevels = pSurface->cLevels;
2446
2447	/* Fugure out what kind of texture we are creating. */
2448	GLenum binding;
2449	GLenum target;
2450	if (pSurface->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
2451	{
2452	Assert(pSurface->cFaces == 6);
2453
2454	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2455	target = GL_TEXTURE_CUBE_MAP;
2456	}
2457	else
2458	{
2459	if (pSurface->paMipmapLevels[0].mipmapSize.depth > 1)
2460	{
2461	binding = GL_TEXTURE_BINDING_3D;
2462	target = GL_TEXTURE_3D;
2463	}
2464	else
2465	{
2466	Assert(pSurface->cFaces == 1);
2467
2468	binding = GL_TEXTURE_BINDING_2D;
2469	target = GL_TEXTURE_2D;
2470	}
2471	}
2472
2473	/* All textures are created in the SharedCtx. */
2474	uint32_t idPrevCtx = pState->idActiveContext;
2475	pContext = &pState->SharedCtx;
2476	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2477
2478	glGenTextures(1, &pSurface->oglId.texture);
2479	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2480	if (pSurface->fEmulated)
2481	{
2482	glGenTextures(1, &pSurface->idEmulated);
2483	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2484	}
2485	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2486
2487	GLint activeTexture = 0;
2488	glGetIntegerv(binding, &activeTexture);
2489	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2490
2491	/* Must bind texture to the current context in order to change it. */
2492	glBindTexture(target, pSurface->oglId.texture);
2493	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2494
2495	/* Set the unpacking parameters. */
2496	VMSVGAPACKPARAMS SavedParams;
2497	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2498
2499	/** @todo Set the mip map generation filter settings. */
2500
2501	/* Set the mipmap base and max level parameters. */
2502	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2503	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2504	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->cLevels - 1);
2505	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2506
2507	if (pSurface->fDirty)
2508	LogFunc(("sync dirty texture\n"));
2509
2510	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2511	if (target == GL_TEXTURE_3D)
2512	{
2513	for (uint32_t i = 0; i < numMipLevels; ++i)
2514	{
2515	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2516	* exposing random host memory to the guest and helps a with the fedora 21 surface
2517	* corruption issues (launchpad, background, search field, login).
2518	*/
2519	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2520
2521	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2522	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2523
2524	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2525	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2526	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2527	{
2528	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2529	i,
2530	pSurface->internalFormatGL,
2531	pMipLevel->mipmapSize.width,
2532	pMipLevel->mipmapSize.height,
2533	pMipLevel->mipmapSize.depth,
2534	0,
2535	pMipLevel->cbSurface,
2536	pMipLevel->pSurfaceData);
2537	}
2538	else
2539	{
2540	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2541	i,
2542	pSurface->internalFormatGL,
2543	pMipLevel->mipmapSize.width,
2544	pMipLevel->mipmapSize.height,
2545	pMipLevel->mipmapSize.depth,
2546	0, /* border */
2547	pSurface->formatGL,
2548	pSurface->typeGL,
2549	pMipLevel->pSurfaceData);
2550	}
2551	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2552
2553	pMipLevel->fDirty = false;
2554	}
2555	}
2556	else if (target == GL_TEXTURE_CUBE_MAP)
2557	{
2558	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2559	{
2560	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2561
2562	for (uint32_t i = 0; i < numMipLevels; ++i)
2563	{
2564	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[iFace * numMipLevels + i];
2565	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2566	Assert(pMipLevel->mipmapSize.depth == 1);
2567
2568	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2569	iFace, i, pMipLevel->fDirty));
2570
2571	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2572	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2573	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2574	{
2575	pState->ext.glCompressedTexImage2D(Face,
2576	i,
2577	pSurface->internalFormatGL,
2578	pMipLevel->mipmapSize.width,
2579	pMipLevel->mipmapSize.height,
2580	0,
2581	pMipLevel->cbSurface,
2582	pMipLevel->pSurfaceData);
2583	}
2584	else
2585	{
2586	glTexImage2D(Face,
2587	i,
2588	pSurface->internalFormatGL,
2589	pMipLevel->mipmapSize.width,
2590	pMipLevel->mipmapSize.height,
2591	0,
2592	pSurface->formatGL,
2593	pSurface->typeGL,
2594	pMipLevel->pSurfaceData);
2595	}
2596	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2597
2598	pMipLevel->fDirty = false;
2599	}
2600	}
2601	}
2602	else if (target == GL_TEXTURE_2D)
2603	{
2604	for (uint32_t i = 0; i < numMipLevels; ++i)
2605	{
2606	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2607	* exposing random host memory to the guest and helps a with the fedora 21 surface
2608	* corruption issues (launchpad, background, search field, login).
2609	*/
2610	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2611	Assert(pMipLevel->mipmapSize.depth == 1);
2612
2613	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2614	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2615
2616	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2617	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2618	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2619	{
2620	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2621	i,
2622	pSurface->internalFormatGL,
2623	pMipLevel->mipmapSize.width,
2624	pMipLevel->mipmapSize.height,
2625	0,
2626	pMipLevel->cbSurface,
2627	pMipLevel->pSurfaceData);
2628	}
2629	else
2630	{
2631	glTexImage2D(GL_TEXTURE_2D,
2632	i,
2633	pSurface->internalFormatGL,
2634	pMipLevel->mipmapSize.width,
2635	pMipLevel->mipmapSize.height,
2636	0,
2637	pSurface->formatGL,
2638	pSurface->typeGL,
2639	NULL);
2640	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2641
2642	if (pSurface->fEmulated)
2643	{
2644	/* Bind the emulated texture and init it. */
2645	glBindTexture(GL_TEXTURE_2D, pSurface->idEmulated);
2646	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2647
2648	glTexImage2D(GL_TEXTURE_2D,
2649	i,
2650	pSurface->internalFormatGL,
2651	pMipLevel->mipmapSize.width,
2652	pMipLevel->mipmapSize.height,
2653	0,
2654	pSurface->formatGL,
2655	pSurface->typeGL,
2656	NULL);
2657	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2658	}
2659
2660	/* Fetch texture data: either to the actual or to the emulated texture.
2661	* The pSurfaceData buffer may be smaller than the entire texture
2662	* for emulated formats, in which case only part of the texture is synched.
2663	*/
2664	uint32_t cBlocksX = pMipLevel->mipmapSize.width / pSurface->cxBlock;
2665	uint32_t cBlocksY = pMipLevel->mipmapSize.height / pSurface->cyBlock;
2666	glTexSubImage2D(GL_TEXTURE_2D,
2667	i,
2668	0,
2669	0,
2670	cBlocksX,
2671	cBlocksY,
2672	pSurface->formatGL,
2673	pSurface->typeGL,
2674	pMipLevel->pSurfaceData);
2675	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2676
2677	if (pSurface->fEmulated)
2678	{
2679	/* Update the actual texture using the format converter. */
2680	FormatConvUpdateTexture(pState, pContext, pSurface, i);
2681
2682	/* Rebind the actual texture. */
2683	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
2684	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2685	}
2686	}
2687	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2688
2689	pMipLevel->fDirty = false;
2690	}
2691	}
2692
2693	pSurface->fDirty = false;
2694
2695	/* Restore unpacking parameters. */
2696	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2697
2698	/* Restore the old active texture. */
2699	glBindTexture(target, activeTexture);
2700	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2701
2702	pSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2703	pSurface->targetGL = target;
2704	pSurface->bindingGL = binding;
2705
2706	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2707	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2708	return VINF_SUCCESS;
2709	}
2710
2711
2712	/**
2713	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2714	*
2715	* @returns VBox status code.
2716	* @param pThis The VGA device instance.
2717	* @param pState The VMSVGA3d state.
2718	* @param pDstSurface The destination host surface.
2719	* @param uDstFace The destination face (valid).
2720	* @param uDstMipmap The destination mipmap level (valid).
2721	* @param pDstBox The destination box.
2722	* @param pSrcSurface The source host surface.
2723	* @param uSrcFace The destination face (valid).
2724	* @param uSrcMipmap The source mimap level (valid).
2725	* @param pSrcBox The source box.
2726	* @param enmMode The strecht blt mode .
2727	* @param pContext The VMSVGA3d context (already current for OGL).
2728	*/
2729	static DECLCALLBACK(int) vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2730	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2731	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2732	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2733	{
2734	RT_NOREF(pThis);
2735
2736	AssertReturn( RT_BOOL(pSrcSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2737	== RT_BOOL(pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2738
2739	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2740	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2741	if (pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2742	{
2743	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2744	glAttachment = GL_DEPTH_ATTACHMENT;
2745	glMask = GL_DEPTH_BUFFER_BIT;
2746	}
2747
2748	/* Activate the read and draw framebuffer objects. */
2749	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2750	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2751	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2752	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2753
2754	/* Bind the source and destination objects to the right place. */
2755	GLenum textarget;
2756	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2757	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2758	else
2759	{
2760	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2761	textarget = GL_TEXTURE_2D;
2762	}
2763	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2764	pSrcSurface->oglId.texture, uSrcMipmap);
2765	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2766
2767	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2768	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2769	else
2770	{
2771	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2772	textarget = GL_TEXTURE_2D;
2773	}
2774	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2775	pDstSurface->oglId.texture, uDstMipmap);
2776	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2777
2778	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2779	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2780	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2781	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2782	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2783
2784	pState->ext.glBlitFramebuffer(pSrcBox->x,
2785	pSrcBox->y,
2786	pSrcBox->x + pSrcBox->w, /* exclusive. */
2787	pSrcBox->y + pSrcBox->h,
2788	pDstBox->x,
2789	pDstBox->y,
2790	pDstBox->x + pDstBox->w, /* exclusive. */
2791	pDstBox->y + pDstBox->h,
2792	glMask,
2793	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2794	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2795
2796	/* Reset the frame buffer association */
2797	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2798	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2799
2800	return VINF_SUCCESS;
2801	}
2802
2803	/**
2804	* Save texture packing parameters and loads those appropriate for the given
2805	* surface.
2806	*
2807	* @param pState The VMSVGA3D state structure.
2808	* @param pContext The active context.
2809	* @param pSurface The surface.
2810	* @param pSave Where to save stuff.
2811	*/
2812	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2813	PVMSVGAPACKPARAMS pSave)
2814	{
2815	RT_NOREF(pState);
2816	/*
2817	* Save (ignore errors, setting the defaults we want and avoids restore).
2818	*/
2819	pSave->iAlignment = 1;
2820	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2821	pSave->cxRow = 0;
2822	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2823
2824	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2825	pSave->cyImage = 0;
2826	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2827	Assert(pSave->cyImage == 0);
2828
2829	pSave->fSwapBytes = GL_FALSE;
2830	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2831	Assert(pSave->fSwapBytes == GL_FALSE);
2832
2833	pSave->fLsbFirst = GL_FALSE;
2834	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2835	Assert(pSave->fLsbFirst == GL_FALSE);
2836
2837	pSave->cSkipRows = 0;
2838	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2839	Assert(pSave->cSkipRows == 0);
2840
2841	pSave->cSkipPixels = 0;
2842	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2843	Assert(pSave->cSkipPixels == 0);
2844
2845	pSave->cSkipImages = 0;
2846	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2847	Assert(pSave->cSkipImages == 0);
2848
2849	VMSVGA3D_CLEAR_GL_ERRORS();
2850	#endif
2851
2852	/*
2853	* Setup unpack.
2854	*
2855	* Note! We use 1 as alignment here because we currently don't do any
2856	* aligning of line pitches anywhere.
2857	*/
2858	NOREF(pSurface);
2859	if (pSave->iAlignment != 1)
2860	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2861	if (pSave->cxRow != 0)
2862	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2863	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2864	if (pSave->cyImage != 0)
2865	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2866	if (pSave->fSwapBytes != 0)
2867	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2868	if (pSave->fLsbFirst != 0)
2869	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2870	if (pSave->cSkipRows != 0)
2871	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2872	if (pSave->cSkipPixels != 0)
2873	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2874	if (pSave->cSkipImages != 0)
2875	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2876	#endif
2877	}
2878
2879
2880	/**
2881	* Restores texture packing parameters.
2882	*
2883	* @param pState The VMSVGA3D state structure.
2884	* @param pContext The active context.
2885	* @param pSurface The surface.
2886	* @param pSave Where stuff was saved.
2887	*/
2888	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2889	PCVMSVGAPACKPARAMS pSave)
2890	{
2891	RT_NOREF(pState, pSurface);
2892	if (pSave->iAlignment != 1)
2893	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2894	if (pSave->cxRow != 0)
2895	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2896	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2897	if (pSave->cyImage != 0)
2898	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2899	if (pSave->fSwapBytes != 0)
2900	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2901	if (pSave->fLsbFirst != 0)
2902	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2903	if (pSave->cSkipRows != 0)
2904	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2905	if (pSave->cSkipPixels != 0)
2906	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2907	if (pSave->cSkipImages != 0)
2908	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2909	#endif
2910	}
2911
2912
2913	/**
2914	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2915	*
2916	* @returns Failure status code or @a rc.
2917	* @param pThis The shared VGA/VMSVGA instance data.
2918	* @param pThisCC The VGA/VMSVGA state for ring-3.
2919	* @param pState The VMSVGA3d state.
2920	* @param pSurface The host surface.
2921	* @param pMipLevel Mipmap level. The caller knows it already.
2922	* @param uHostFace The host face (valid).
2923	* @param uHostMipmap The host mipmap level (valid).
2924	* @param GuestPtr The guest pointer.
2925	* @param cbGuestPitch The guest pitch.
2926	* @param transfer The transfer direction.
2927	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2928	* @param pContext The context (for OpenGL).
2929	* @param rc The current rc for all boxes.
2930	* @param iBox The current box number (for Direct 3D).
2931	*/
2932	static DECLCALLBACK(int) vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVGASTATECC pThisCC, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2933	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2934	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2935	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2936	{
2937	RT_NOREF(iBox);
2938
2939	switch (pSurface->enmOGLResType)
2940	{
2941	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2942	{
2943	uint32_t cbSurfacePitch;
2944	uint8_t *pDoubleBuffer;
2945	uint64_t offHst;
2946
2947	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2948	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2949	uint32_t const u32HostZ = pBox->z;
2950	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2951	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2952
2953	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2954	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2955	uint32_t const u32GuestZ = pBox->srcz / pSurface->cyBlock;
2956	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2957	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2958
2959	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2960	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2961	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2962
2963	GLenum texImageTarget;
2964	if (pSurface->targetGL == GL_TEXTURE_3D)
2965	{
2966	texImageTarget = GL_TEXTURE_3D;
2967	}
2968	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2969	{
2970	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2971	}
2972	else
2973	{
2974	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2975	texImageTarget = GL_TEXTURE_2D;
2976	}
2977
2978	/* The buffer must be large enough to hold entire texture in the OpenGL format. */
2979	pDoubleBuffer = (uint8_t )RTMemAlloc(pSurface->cbBlockGL pMipLevel->cBlocks);
2980	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2981
2982	if (transfer == SVGA3D_READ_HOST_VRAM)
2983	{
2984	/* Read the entire texture to the double buffer. */
2985	GLint activeTexture;
2986
2987	/* Must bind texture to the current context in order to read it. */
2988	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2989	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2990
2991	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2992	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2993
2994	if (pSurface->fEmulated)
2995	{
2996	FormatConvReadTexture(pState, pContext, pSurface, uHostMipmap);
2997	}
2998
2999	/* Set row length and alignment of the input data. */
3000	VMSVGAPACKPARAMS SavedParams;
3001	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
3002
3003	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3004	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3005	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3006	{
3007	pState->ext.glGetCompressedTexImage(texImageTarget, uHostMipmap, pDoubleBuffer);
3008	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3009	}
3010	else
3011	{
3012	glGetTexImage(texImageTarget, uHostMipmap, pSurface->formatGL, pSurface->typeGL, pDoubleBuffer);
3013	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3014	}
3015
3016	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
3017
3018	/* Restore the old active texture. */
3019	glBindTexture(pSurface->targetGL, activeTexture);
3020	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3021
3022	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch + u32HostZ * pMipLevel->cbSurfacePlane;
3023	cbSurfacePitch = pMipLevel->cbSurfacePitch;
3024	}
3025	else
3026	{
3027	/* The buffer will contain only the copied rectangle. */
3028	offHst = 0;
3029	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
3030	}
3031
3032	uint64_t offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch + u32GuestZ * cbGuestPitch * pMipLevel->mipmapSize.height;
3033
3034	for (uint32_t iPlane = 0; iPlane < pBox->d; ++iPlane)
3035	{
3036	AssertBreak(offHst < UINT32_MAX);
3037	AssertBreak(offGst < UINT32_MAX);
3038
3039	rc = vmsvgaR3GmrTransfer(pThis,
3040	pThisCC,
3041	transfer,
3042	pDoubleBuffer,
3043	pMipLevel->cbSurface,
3044	(uint32_t)offHst,
3045	cbSurfacePitch,
3046	GuestPtr,
3047	(uint32_t)offGst,
3048	cbGuestPitch,
3049	cBlocksX * pSurface->cbBlock,
3050	cBlocksY);
3051	AssertRC(rc);
3052
3053	offHst += pMipLevel->cbSurfacePlane;
3054	offGst += pMipLevel->mipmapSize.height * cbGuestPitch;
3055	}
3056
3057	/* Update the opengl surface data. */
3058	if (transfer == SVGA3D_WRITE_HOST_VRAM)
3059	{
3060	GLint activeTexture = 0;
3061	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3062	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3063
3064	/* Must bind texture to the current context in order to change it. */
3065	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
3066	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3067
3068	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
3069
3070	/* Set row length and alignment of the input data. */
3071	/* We do not need to set ROW_LENGTH to w here, because the image in pDoubleBuffer is tightly packed. */
3072	VMSVGAPACKPARAMS SavedParams;
3073	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
3074
3075	if (texImageTarget == GL_TEXTURE_3D)
3076	{
3077	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3078	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3079	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3080	{
3081	pState->ext.glCompressedTexSubImage3D(texImageTarget,
3082	uHostMipmap,
3083	pBox->x,
3084	pBox->y,
3085	pBox->z,
3086	pBox->w,
3087	pBox->h,
3088	pBox->d,
3089	pSurface->internalFormatGL,
3090	cbSurfacePitch * cBlocksY * pBox->d,
3091	pDoubleBuffer);
3092	}
3093	else
3094	{
3095	pState->ext.glTexSubImage3D(texImageTarget,
3096	uHostMipmap,
3097	u32HostBlockX,
3098	u32HostBlockY,
3099	pBox->z,
3100	cBlocksX,
3101	cBlocksY,
3102	pBox->d,
3103	pSurface->formatGL,
3104	pSurface->typeGL,
3105	pDoubleBuffer);
3106	}
3107	}
3108	else
3109	{
3110	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3111	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3112	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3113	{
3114	pState->ext.glCompressedTexSubImage2D(texImageTarget,
3115	uHostMipmap,
3116	pBox->x,
3117	pBox->y,
3118	pBox->w,
3119	pBox->h,
3120	pSurface->internalFormatGL,
3121	cbSurfacePitch * cBlocksY,
3122	pDoubleBuffer);
3123	}
3124	else
3125	{
3126	glTexSubImage2D(texImageTarget,
3127	uHostMipmap,
3128	u32HostBlockX,
3129	u32HostBlockY,
3130	cBlocksX,
3131	cBlocksY,
3132	pSurface->formatGL,
3133	pSurface->typeGL,
3134	pDoubleBuffer);
3135	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3136
3137	if (pSurface->fEmulated)
3138	{
3139	/* Convert the texture to the actual texture if necessary */
3140	FormatConvUpdateTexture(pState, pContext, pSurface, uHostMipmap);
3141	}
3142	}
3143	}
3144	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3145
3146	/* Restore old values. */
3147	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
3148
3149	/* Restore the old active texture. */
3150	glBindTexture(pSurface->targetGL, activeTexture);
3151	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3152	}
3153
3154	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
3155
3156	/* Free the double buffer. */
3157	RTMemFree(pDoubleBuffer);
3158	break;
3159	}
3160
3161	case VMSVGA3D_OGLRESTYPE_BUFFER:
3162	{
3163	/* Buffers are uncompressed. */
3164	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
3165
3166	/* Caller already clipped pBox and buffers are 1-dimensional. */
3167	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
3168
3169	VMSVGA3D_CLEAR_GL_ERRORS();
3170	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
3171	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
3172	{
3173	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
3174	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
3175	if (RT_LIKELY(pbData != NULL))
3176	{
3177	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
3178	GLint cbStrictBufSize;
3179	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
3180	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
3181	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
3182	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
3183	#endif
3184	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
3185	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
3186	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
3187	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
3188
3189	/* The caller already copied the data to the pMipLevel->pSurfaceData buffer, see VMSVGA3DSURFACE_NEEDS_DATA. */
3190	uint32_t const offHst = pBox->x * pSurface->cbBlock;
3191	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
3192
3193	memcpy(pbData + offHst, (uint8_t *)pMipLevel->pSurfaceData + offHst, cbWidth);
3194
3195	Log4(("Buffer updated at [0x%x;0x%x):\n%.Rhxd\n", offHst, offHst + cbWidth, cbWidth, (uint8_t )pbData + offHst));
3196
3197	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
3198	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3199	}
3200	else
3201	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
3202	}
3203	else
3204	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
3205	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
3206	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3207	break;
3208	}
3209
3210	default:
3211	AssertFailed();
3212	break;
3213	}
3214
3215	return rc;
3216	}
3217
3218	static DECLCALLBACK(int) vmsvga3dBackGenerateMipmaps(PVGASTATECC pThisCC, uint32_t sid, SVGA3dTextureFilter filter)
3219	{
3220	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3221	PVMSVGA3DSURFACE pSurface;
3222	int rc = VINF_SUCCESS;
3223	PVMSVGA3DCONTEXT pContext;
3224	uint32_t cid;
3225	GLint activeTexture = 0;
3226
3227	AssertReturn(pState, VERR_NO_MEMORY);
3228
3229	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
3230	AssertRCReturn(rc, rc);
3231
3232	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
3233	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
3234	pSurface->autogenFilter = filter;
3235
3236	LogFunc(("sid=%u filter=%d\n", sid, filter));
3237
3238	cid = SVGA3D_INVALID_ID;
3239	pContext = &pState->SharedCtx;
3240	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3241
3242	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
3243	{
3244	/* Unknown surface type; turn it into a texture. */
3245	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->f.s.surface1Flags, pSurface->format));
3246	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
3247	AssertRCReturn(rc, rc);
3248	}
3249	else
3250	{
3251	/** @todo new filter */
3252	AssertFailed();
3253	}
3254
3255	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3256	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3257
3258	/* Must bind texture to the current context in order to change it. */
3259	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
3260	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3261
3262	/* Generate the mip maps. */
3263	pState->ext.glGenerateMipmap(pSurface->targetGL);
3264	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3265
3266	/* Restore the old texture. */
3267	glBindTexture(pSurface->targetGL, activeTexture);
3268	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3269
3270	return VINF_SUCCESS;
3271	}
3272
3273
3274	#ifdef RT_OS_LINUX
3275	/**
3276	* X11 event handling thread.
3277	*
3278	* @returns VINF_SUCCESS (ignored)
3279	* @param hThreadSelf thread handle
3280	* @param pvUser pointer to pState structure
3281	*/
3282	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3283	{
3284	RT_NOREF(hThreadSelf);
3285	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3286	while (!pState->bTerminate)
3287	{
3288	while (XPending(pState->display) > 0)
3289	{
3290	XEvent event;
3291	XNextEvent(pState->display, &event);
3292
3293	switch (event.type)
3294	{
3295	default:
3296	break;
3297	}
3298	}
3299	/* sleep for 16ms to not burn too many cycles */
3300	RTThreadSleep(16);
3301	}
3302	return VINF_SUCCESS;
3303	}
3304	#endif // RT_OS_LINUX
3305
3306
3307	/**
3308	* Create a new 3d context
3309	*
3310	* @returns VBox status code.
3311	* @param pThisCC The VGA/VMSVGA state for ring-3.
3312	* @param cid Context id
3313	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3314	*/
3315	int vmsvga3dContextDefineOgl(PVGASTATECC pThisCC, uint32_t cid, uint32_t fFlags)
3316	{
3317	int rc;
3318	PVMSVGA3DCONTEXT pContext;
3319	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3320
3321	AssertReturn(pState, VERR_NO_MEMORY);
3322	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3323	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3324	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3325	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3326	#endif
3327
3328	Log(("vmsvga3dContextDefine id %x\n", cid));
3329
3330	if (cid == VMSVGA3D_SHARED_CTX_ID)
3331	pContext = &pState->SharedCtx;
3332	else
3333	{
3334	if (cid >= pState->cContexts)
3335	{
3336	/* Grow the array. */
3337	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3338	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3339	AssertReturn(pvNew, VERR_NO_MEMORY);
3340	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3341	while (pState->cContexts < cNew)
3342	{
3343	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3344	AssertReturn(pContext, VERR_NO_MEMORY);
3345	pContext->id = SVGA3D_INVALID_ID;
3346	pState->papContexts[pState->cContexts++] = pContext;
3347	}
3348	}
3349	/* If one already exists with this id, then destroy it now. */
3350	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3351	vmsvga3dBackContextDestroy(pThisCC, cid);
3352
3353	pContext = pState->papContexts[cid];
3354	}
3355
3356	/*
3357	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3358	*/
3359	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3360	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3361	{
3362	pSharedCtx = &pState->SharedCtx;
3363	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3364	{
3365	rc = vmsvga3dContextDefineOgl(pThisCC, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3366	AssertLogRelRCReturn(rc, rc);
3367
3368	/* Create resources which use the shared context. */
3369	vmsvga3dOnSharedContextDefine(pState);
3370	}
3371	}
3372
3373	/*
3374	* Initialize the context.
3375	*/
3376	memset(pContext, 0, sizeof(*pContext));
3377	pContext->id = cid;
3378	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3379	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3380
3381	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3382	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3383	pContext->idFramebuffer = OPENGL_INVALID_ID;
3384	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3385	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3386
3387	rc = ShaderContextCreate(&pContext->pShaderContext);
3388	AssertRCReturn(rc, rc);
3389
3390	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3391	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3392
3393	#ifdef RT_OS_WINDOWS
3394	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3395	* to present the rendered image. Rendered images from the guest will be copied to
3396	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3397	* system memory in the guest VRAM.
3398	*/
3399	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3400	AssertRCReturn(rc, rc);
3401
3402	pContext->hdc = GetDC(pContext->hwnd);
3403	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3404
3405	PIXELFORMATDESCRIPTOR pfd = {
3406	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3407	1, /* version number */
3408	PFD_DRAW_TO_WINDOW \| /* support window */
3409	PFD_SUPPORT_OPENGL, /* support OpenGL */
3410	PFD_TYPE_RGBA, /* RGBA type */
3411	24, /* 24-bit color depth */
3412	0, 0, 0, 0, 0, 0, /* color bits ignored */
3413	8, /* alpha buffer */
3414	0, /* shift bit ignored */
3415	0, /* no accumulation buffer */
3416	0, 0, 0, 0, /* accum bits ignored */
3417	16, /* set depth buffer */
3418	16, /* set stencil buffer */
3419	0, /* no auxiliary buffer */
3420	PFD_MAIN_PLANE, /* main layer */
3421	0, /* reserved */
3422	0, 0, 0 /* layer masks ignored */
3423	};
3424	int pixelFormat;
3425	BOOL ret;
3426
3427	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3428	/** @todo is this really necessary?? */
3429	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3430	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3431
3432	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3433	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3434
3435	pContext->hglrc = wglCreateContext(pContext->hdc);
3436	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3437
3438	if (pSharedCtx)
3439	{
3440	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3441	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3442	}
3443
3444	#elif defined(RT_OS_DARWIN)
3445	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3446
3447	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3448	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3449	NULL,
3450	4, 4,
3451	pShareContext, pContext->fOtherProfile);
3452
3453	#else
3454	if (pState->display == NULL)
3455	{
3456	/* get an X display and make sure we have glX 1.3 */
3457	pState->display = XOpenDisplay(0);
3458	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3459	int glxMajor, glxMinor;
3460	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3461	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3462	/* start our X event handling thread */
3463	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3464	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3465	}
3466
3467	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3468	/* Create a small 4x4 window required for GL context. */
3469	int attrib[] =
3470	{
3471	GLX_RGBA,
3472	GLX_RED_SIZE, 1,
3473	GLX_GREEN_SIZE, 1,
3474	GLX_BLUE_SIZE, 1,
3475	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3476	GLX_DOUBLEBUFFER,
3477	None
3478	};
3479	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3480	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3481	XSetWindowAttributes swa;
3482	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3483	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3484	swa.border_pixel = 0;
3485	swa.background_pixel = 0;
3486	swa.event_mask = StructureNotifyMask;
3487	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3488	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3489	0, 0, 4, 4,
3490	0, vi->depth, InputOutput,
3491	vi->visual, flags, &swa);
3492	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3493
3494	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3495
3496	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3497	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3498	XFree(vi);
3499	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3500	#endif
3501
3502	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3503
3504	/* NULL during the first PowerOn call. */
3505	if (pState->ext.glGenFramebuffers)
3506	{
3507	/* Create a framebuffer object for this context. */
3508	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3509	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3510
3511	/* Bind the object to the framebuffer target. */
3512	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3513	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3514
3515	/* Create read and draw framebuffer objects for this context. */
3516	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3517	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3518
3519	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3520	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3521
3522	}
3523	#if 0
3524	/** @todo move to shader lib!!! */
3525	/* Clear the screen */
3526	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3527
3528	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3529	glClearIndex(0);
3530	glClearDepth(1);
3531	glClearStencil(0xffff);
3532	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3533	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3534	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3535	if (pState->ext.glProvokingVertex)
3536	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3537	/** @todo move to shader lib!!! */
3538	#endif
3539	return VINF_SUCCESS;
3540	}
3541
3542	#if defined(RT_OS_LINUX)
3543	/*
3544	* HW accelerated graphics output.
3545	*/
3546
3547	/**
3548	* VMSVGA3d screen data.
3549	*
3550	* Allocated on the heap and pointed to by VMSVGASCREENOBJECT::pHwScreen.
3551	*/
3552	typedef struct VMSVGAHWSCREEN
3553	{
3554	/* OpenGL context, which is used for the screen updates. */
3555	GLXContext glxctx;
3556
3557	/* The overlay window. */
3558	Window xwindow;
3559
3560	/* The RGBA texture which hold the screen content. */
3561	GLuint idScreenTexture;
3562
3563	/* Read and draw framebuffer objects for copying a surface to the screen texture. */
3564	GLuint idReadFramebuffer;
3565	GLuint idDrawFramebuffer;
3566	} VMSVGAHWSCREEN;
3567
3568	/* Send a notification to the UI. */
3569	#if 0 /* Unused */
3570	static int vmsvga3dDrvNotifyHwScreen(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification,
3571	uint32_t idScreen, Pixmap pixmap, void *pvData, size_t cbData)
3572	{
3573	uint8_t au8Buffer[128];
3574	AssertLogRelMsgReturn(cbData <= sizeof(au8Buffer) - sizeof(VBOX3DNOTIFY),
3575	("cbData %zu", cbData),
3576	VERR_INVALID_PARAMETER);
3577
3578	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3579	p->enmNotification = enmNotification;
3580	p->iDisplay = idScreen;
3581	p->u32Reserved = 0;
3582	p->cbData = cbData + sizeof(uint64_t);
3583	/* au8Data consists of a 64 bit pixmap handle followed by notification specific data. */
3584	AssertCompile(sizeof(pixmap) <= sizeof(uint64_t));
3585	(uint64_t )&p->au8Data[0] = (uint64_t)pixmap;
3586	memcpy(&p->au8Data[sizeof(uint64_t)], pvData, cbData);
3587
3588	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3589	return rc;
3590	}
3591	#endif /* Unused */
3592
3593	static void vmsvga3dDrvNotifyHwOverlay(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification, uint32_t idScreen)
3594	{
3595	uint8_t au8Buffer[128];
3596	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3597	p->enmNotification = enmNotification;
3598	p->iDisplay = idScreen;
3599	p->u32Reserved = 0;
3600	p->cbData = sizeof(uint64_t);
3601	(uint64_t )&p->au8Data[0] = 0;
3602
3603	pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3604	}
3605
3606	/* Get X Window handle of the UI Framebuffer window. */
3607	static int vmsvga3dDrvQueryWindow(PVGASTATECC pThisCC, uint32_t idScreen, Window *pWindow)
3608	{
3609	uint8_t au8Buffer[128];
3610	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3611	p->enmNotification = VBOX3D_NOTIFY_TYPE_HW_OVERLAY_GET_ID;
3612	p->iDisplay = idScreen;
3613	p->u32Reserved = 0;
3614	p->cbData = sizeof(uint64_t);
3615	(uint64_t )&p->au8Data[0] = 0;
3616
3617	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3618	if (RT_SUCCESS(rc))
3619	{
3620	pWindow = (Window)(uint64_t *)&p->au8Data[0];
3621	}
3622	return rc;
3623	}
3624
3625	static int ctxErrorHandler(Display dpy, XErrorEvent ev)
3626	{
3627	RT_NOREF(dpy);
3628	LogRel4(("VMSVGA: XError %d\n", (int)ev->error_code));
3629	return 0;
3630	}
3631
3632	/* Create an overlay X window for the HW accelerated screen. */
3633	static int vmsvga3dHwScreenCreate(PVMSVGA3DSTATE pState, Window parentWindow, unsigned int cWidth, unsigned int cHeight, VMSVGAHWSCREEN *p)
3634	{
3635	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3636
3637	int rc = VINF_SUCCESS;
3638
3639	XWindowAttributes parentAttr;
3640	if (XGetWindowAttributes(pState->display, parentWindow, &parentAttr) == 0)
3641	return VERR_INVALID_PARAMETER;
3642
3643	int const idxParentScreen = XScreenNumberOfScreen(parentAttr.screen);
3644
3645	/*
3646	* Create a new GL context, which will be used for copying to the screen.
3647	*/
3648
3649	/* FBConfig attributes for the overlay window. */
3650	static int const aConfigAttribList[] =
3651	{
3652	GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, // Must support GLX windows
3653	GLX_DOUBLEBUFFER, False, // Double buffering had a much lower performance.
3654	GLX_RED_SIZE, 8, // True color RGB with 8 bits per channel.
3655	GLX_GREEN_SIZE, 8,
3656	GLX_BLUE_SIZE, 8,
3657	GLX_ALPHA_SIZE, 8,
3658	GLX_STENCIL_SIZE, 0, // No stencil buffer
3659	GLX_DEPTH_SIZE, 0, // No depth buffer
3660	None
3661	};
3662
3663	/* Find a suitable FB config. */
3664	int cConfigs = 0;
3665	GLXFBConfig *paConfigs = glXChooseFBConfig(pState->display, idxParentScreen, aConfigAttribList, &cConfigs);
3666	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: paConfigs %p cConfigs %d\n", (void *)paConfigs, cConfigs));
3667	if (paConfigs)
3668	{
3669	XVisualInfo *vi = NULL;
3670	int i = 0;
3671	for (; i < cConfigs; ++i)
3672	{
3673	/* Use XFree to free the data returned in the previous iteration of this loop. */
3674	if (vi)
3675	XFree(vi);
3676
3677	vi = glXGetVisualFromFBConfig(pState->display, paConfigs[i]);
3678	if (!vi)
3679	continue;
3680
3681	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: %p vid %lu screen %d depth %d r %lu g %lu b %lu clrmap %d bitsperrgb %d\n",
3682	(void *)vi->visual, vi->visualid, vi->screen, vi->depth,
3683	vi->red_mask, vi->green_mask, vi->blue_mask, vi->colormap_size, vi->bits_per_rgb));
3684
3685	/* Same screen as the parent window. */
3686	if (vi->screen != idxParentScreen)
3687	continue;
3688
3689	/* Search for 32 bits per pixel. */
3690	if (vi->depth != 32)
3691	continue;
3692
3693	/* 8 bits per color component is enough. */
3694	if (vi->bits_per_rgb != 8)
3695	continue;
3696
3697	/* Render to pixmap. */
3698	int value = 0;
3699	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_DRAWABLE_TYPE, &value);
3700	if (!(value & GLX_WINDOW_BIT))
3701	continue;
3702
3703	/* This FB config can be used. */
3704	break;
3705	}
3706
3707	if (i < cConfigs)
3708	{
3709	/* Found a suitable config with index i. */
3710
3711	/* Create an overlay window. */
3712	XSetWindowAttributes swa;
3713	RT_ZERO(swa);
3714
3715	swa.colormap = XCreateColormap(pState->display, parentWindow, vi->visual, AllocNone);
3716	AssertLogRelMsg(swa.colormap, ("XCreateColormap failed"));
3717	swa.border_pixel = 0;
3718	swa.background_pixel = 0;
3719	swa.event_mask = StructureNotifyMask;
3720	swa.override_redirect = 1;
3721	unsigned long const swaAttrs = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask \| CWOverrideRedirect;
3722	p->xwindow = XCreateWindow(pState->display, parentWindow,
3723	0, 0, cWidth, cHeight, 0, vi->depth, InputOutput,
3724	vi->visual, swaAttrs, &swa);
3725	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->xwindow %ld\n", p->xwindow));
3726	if (p->xwindow)
3727	{
3728
3729	p->glxctx = glXCreateContext(pState->display, vi, pState->SharedCtx.glxContext, GL_TRUE);
3730	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxctx %p\n", (void *)p->glxctx));
3731	if (p->glxctx)
3732	{
3733	XMapWindow(pState->display, p->xwindow);
3734	}
3735	else
3736	{
3737	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: glXCreateContext failed\n"));
3738	rc = VERR_NOT_SUPPORTED;
3739	}
3740	}
3741	else
3742	{
3743	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: XCreateWindow failed\n"));
3744	rc = VERR_NOT_SUPPORTED;
3745	}
3746
3747	XSync(pState->display, False);
3748	}
3749	else
3750	{
3751	/* A suitable config is not found. */
3752	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: no FBConfig\n"));
3753	rc = VERR_NOT_SUPPORTED;
3754	}
3755
3756	if (vi)
3757	XFree(vi);
3758
3759	/* "Use XFree to free the memory returned by glXChooseFBConfig." */
3760	XFree(paConfigs);
3761	}
3762	else
3763	{
3764	/* glXChooseFBConfig failed. */
3765	rc = VERR_NOT_SUPPORTED;
3766	}
3767
3768	XSetErrorHandler(oldHandler);
3769	return rc;
3770	}
3771
3772	/* Destroy a HW accelerated screen. */
3773	static void vmsvga3dHwScreenDestroy(PVMSVGA3DSTATE pState, VMSVGAHWSCREEN *p)
3774	{
3775	if (p)
3776	{
3777	LogRel4(("VMSVGA: vmsvga3dHwScreenDestroy: p->xwindow %ld, ctx %p\n", p->xwindow, (void *)p->glxctx));
3778	if (p->glxctx)
3779	{
3780	/* GLX context is changed here, so other code has to set the appropriate context again. */
3781	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3782
3783	glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3784
3785	/* Clean up OpenGL. */
3786	if (p->idReadFramebuffer != OPENGL_INVALID_ID)
3787	pState->ext.glDeleteFramebuffers(1, &p->idReadFramebuffer);
3788	if (p->idDrawFramebuffer != OPENGL_INVALID_ID)
3789	pState->ext.glDeleteFramebuffers(1, &p->idDrawFramebuffer);
3790	if (p->idScreenTexture != OPENGL_INVALID_ID)
3791	glDeleteTextures(1, &p->idScreenTexture);
3792
3793	glXMakeCurrent(pState->display, None, NULL);
3794
3795	glXDestroyContext(pState->display, p->glxctx);
3796	}
3797
3798	if (p->xwindow)
3799	XDestroyWindow(pState->display, p->xwindow);
3800
3801	RT_ZERO(*p);
3802	}
3803	}
3804
3805	#define GLCHECK() \
3806	do { \
3807	int glErr = glGetError(); \
3808	if (glErr != GL_NO_ERROR) LogRel4(("VMSVGA: GL error 0x%x @%d\n", glErr, __LINE__)); \
3809	} while(0)
3810
3811	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3812	{
3813	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: screen %u\n", pScreen->idScreen));
3814
3815	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3816	AssertReturn(pState, VERR_NOT_SUPPORTED);
3817
3818	if (!pThis->svga.f3DOverlayEnabled)
3819	return VERR_NOT_SUPPORTED;
3820
3821	Assert(pScreen->pHwScreen == NULL);
3822
3823	VMSVGAHWSCREEN p = (VMSVGAHWSCREEN )RTMemAllocZ(sizeof(VMSVGAHWSCREEN));
3824	AssertPtrReturn(p, VERR_NO_MEMORY);
3825
3826	/* Query the parent window ID from the UI framebuffer.
3827	* If it is there then
3828	* the device will create a texture for the screen content and an overlay window to present the screen content.
3829	* otherwise
3830	* the device will use the guest VRAM system memory for the screen content.
3831	*/
3832	Window parentWindow;
3833	int rc = vmsvga3dDrvQueryWindow(pThisCC, pScreen->idScreen, &parentWindow);
3834	if (RT_SUCCESS(rc))
3835	{
3836	/* Create the hardware accelerated screen. */
3837	rc = vmsvga3dHwScreenCreate(pState, parentWindow, pScreen->cWidth, pScreen->cHeight, p);
3838	if (RT_SUCCESS(rc))
3839	{
3840	/*
3841	* Setup the OpenGL context of the screen. The context will be used to draw on the screen.
3842	*/
3843
3844	/* GLX context is changed here, so other code has to set the appropriate context again. */
3845	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3846
3847	Bool const fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3848	if (fSuccess)
3849	{
3850	/* Set GL state. */
3851	glClearColor(0, 0, 0, 1);
3852	glEnable(GL_TEXTURE_2D);
3853	glDisable(GL_DEPTH_TEST);
3854	glDisable(GL_CULL_FACE);
3855
3856	/* The RGBA texture which hold the screen content. */
3857	glGenTextures(1, &p->idScreenTexture); GLCHECK();
3858	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3859	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); GLCHECK();
3860	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); GLCHECK();
3861	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, pScreen->cWidth, pScreen->cHeight, 0,
3862	GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); GLCHECK();
3863
3864	/* Create read and draw framebuffer objects for this screen. */
3865	pState->ext.glGenFramebuffers(1, &p->idReadFramebuffer); GLCHECK();
3866	pState->ext.glGenFramebuffers(1, &p->idDrawFramebuffer); GLCHECK();
3867
3868	/* Work in screen coordinates. */
3869	glMatrixMode(GL_MODELVIEW);
3870	glLoadIdentity();
3871	glOrtho(0, pScreen->cWidth, 0, pScreen->cHeight, -1, 1);
3872	glMatrixMode(GL_PROJECTION);
3873	glLoadIdentity();
3874
3875	/* Clear the texture. */
3876	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3877	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3878	p->idScreenTexture, 0); GLCHECK();
3879
3880	glClear(GL_COLOR_BUFFER_BIT);
3881
3882	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); GLCHECK();
3883
3884	glXMakeCurrent(pState->display, None, NULL);
3885
3886	XSync(pState->display, False);
3887
3888	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_CREATED, pScreen->idScreen);
3889	}
3890	else
3891	{
3892	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: failed to set current context\n"));
3893	rc = VERR_NOT_SUPPORTED;
3894	}
3895	}
3896	}
3897	else
3898	{
3899	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: no framebuffer\n"));
3900	}
3901
3902	if (RT_SUCCESS(rc))
3903	{
3904	LogRel(("VMSVGA: Using HW accelerated screen %u\n", pScreen->idScreen));
3905	pScreen->pHwScreen = p;
3906	}
3907	else
3908	{
3909	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: %Rrc\n", rc));
3910	vmsvga3dHwScreenDestroy(pState, p);
3911	RTMemFree(p);
3912	}
3913
3914	return rc;
3915	}
3916
3917	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3918	{
3919	LogRel4(("VMSVGA: vmsvga3dBackDestroyScreen: screen %u\n", pScreen->idScreen));
3920
3921	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3922	AssertReturn(pState, VERR_NOT_SUPPORTED);
3923
3924	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3925
3926	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3927	if (p)
3928	{
3929	pScreen->pHwScreen = NULL;
3930
3931	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_DESTROYED, pScreen->idScreen);
3932
3933	vmsvga3dHwScreenDestroy(pState, p);
3934	RTMemFree(p);
3935	}
3936
3937	XSetErrorHandler(oldHandler);
3938
3939	return VINF_SUCCESS;
3940	}
3941
3942	/* Blit a surface to the GLX pixmap. */
3943	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3944	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3945	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3946	{
3947	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3948	AssertReturn(pState, VERR_NOT_SUPPORTED);
3949
3950	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3951	AssertReturn(p, VERR_NOT_SUPPORTED);
3952
3953	PVMSVGA3DSURFACE pSurface;
3954	int rc = vmsvga3dSurfaceFromSid(pState, srcImage.sid, &pSurface);
3955	AssertRCReturn(rc, rc);
3956
3957	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
3958	{
3959	LogFunc(("src sid=%u flags=0x%x format=%d -> create texture\n", srcImage.sid, pSurface->f.s.surface1Flags, pSurface->format));
3960	rc = vmsvga3dBackCreateTexture(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID, pSurface);
3961	AssertRCReturn(rc, rc);
3962	}
3963
3964	AssertReturn(pSurface->enmOGLResType == VMSVGA3D_OGLRESTYPE_TEXTURE, VERR_NOT_SUPPORTED);
3965
3966	PVMSVGA3DMIPMAPLEVEL pMipLevel;
3967	rc = vmsvga3dMipmapLevel(pSurface, srcImage.face, srcImage.mipmap, &pMipLevel);
3968	AssertRCReturn(rc, rc);
3969
3970	/** @todo Implement. */
3971	RT_NOREF(cRects, paRects);
3972
3973	/* GLX context is changed here, so other code has to set appropriate context again. */
3974	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3975
3976	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3977
3978	Bool fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3979	if (fSuccess)
3980	{
3981	/* Activate the read and draw framebuffer objects. */
3982	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, p->idReadFramebuffer); GLCHECK();
3983	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3984
3985	/* Bind the source and destination objects to the right place. */
3986	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3987	pSurface->oglId.texture, 0); GLCHECK();
3988	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3989	p->idScreenTexture, 0); GLCHECK();
3990
3991	pState->ext.glBlitFramebuffer(srcRect.left,
3992	srcRect.top,
3993	srcRect.right,
3994	srcRect.bottom,
3995	destRect.left,
3996	destRect.top,
3997	destRect.right,
3998	destRect.bottom,
3999	GL_COLOR_BUFFER_BIT,
4000	GL_NEAREST); GLCHECK();
4001
4002	/* Reset the frame buffer association */
4003	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0); GLCHECK();
4004
4005	/* Update the overlay window. */
4006	glClear(GL_COLOR_BUFFER_BIT);
4007
4008	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
4009
4010	GLint const w = pScreen->cWidth;
4011	GLint const h = pScreen->cHeight;
4012
4013	glBegin(GL_QUADS);
4014	glTexCoord2f(0.0f, 0.0f); glVertex2i(0, h);
4015	glTexCoord2f(0.0f, 1.0f); glVertex2i(0, 0);
4016	glTexCoord2f(1.0f, 1.0f); glVertex2i(w, 0);
4017	glTexCoord2f(1.0f, 0.0f); glVertex2i(w, h);
4018	glEnd(); GLCHECK();
4019
4020	glBindTexture(GL_TEXTURE_2D, 0); GLCHECK();
4021
4022	glXMakeCurrent(pState->display, None, NULL);
4023	}
4024	else
4025	{
4026	LogRel4(("VMSVGA: vmsvga3dBackSurfaceBlitToScreen: screen %u, glXMakeCurrent for pixmap failed\n", pScreen->idScreen));
4027	}
4028
4029	XSetErrorHandler(oldHandler);
4030
4031	return VINF_SUCCESS;
4032	}
4033
4034	#else /* !RT_OS_LINUX */
4035
4036	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
4037	{
4038	RT_NOREF(pThis, pThisCC, pScreen);
4039	return VERR_NOT_IMPLEMENTED;
4040	}
4041
4042	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
4043	{
4044	RT_NOREF(pThisCC, pScreen);
4045	return VERR_NOT_IMPLEMENTED;
4046	}
4047
4048	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
4049	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
4050	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
4051	{
4052	RT_NOREF(pThisCC, pScreen, destRect, srcImage, srcRect, cRects, paRects);
4053	return VERR_NOT_IMPLEMENTED;
4054	}
4055	#endif
4056
4057	/**
4058	* Create a new 3d context
4059	*
4060	* @returns VBox status code.
4061	* @param pThisCC The VGA/VMSVGA state for ring-3.
4062	* @param cid Context id
4063	*/
4064	static DECLCALLBACK(int) vmsvga3dBackContextDefine(PVGASTATECC pThisCC, uint32_t cid)
4065	{
4066	return vmsvga3dContextDefineOgl(pThisCC, cid, 0/fFlags/);
4067	}
4068
4069	/**
4070	* Destroys a 3d context.
4071	*
4072	* @returns VBox status code.
4073	* @param pThisCC The VGA/VMSVGA state for ring-3.
4074	* @param pContext The context to destroy.
4075	* @param cid Context id
4076	*/
4077	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid)
4078	{
4079	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4080	AssertReturn(pState, VERR_NO_MEMORY);
4081	AssertReturn(pContext, VERR_INVALID_PARAMETER);
4082	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
4083	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
4084
4085	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4086
4087	if (pContext->id == VMSVGA3D_SHARED_CTX_ID)
4088	{
4089	/* Delete resources which use the shared context. */
4090	vmsvga3dOnSharedContextDestroy(pState);
4091	}
4092
4093	/* Destroy all leftover pixel shaders. */
4094	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
4095	{
4096	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
4097	vmsvga3dBackShaderDestroy(pThisCC, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
4098	}
4099	if (pContext->paPixelShader)
4100	RTMemFree(pContext->paPixelShader);
4101
4102	/* Destroy all leftover vertex shaders. */
4103	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
4104	{
4105	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
4106	vmsvga3dBackShaderDestroy(pThisCC, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
4107	}
4108	if (pContext->paVertexShader)
4109	RTMemFree(pContext->paVertexShader);
4110
4111	if (pContext->state.paVertexShaderConst)
4112	RTMemFree(pContext->state.paVertexShaderConst);
4113	if (pContext->state.paPixelShaderConst)
4114	RTMemFree(pContext->state.paPixelShaderConst);
4115
4116	if (pContext->pShaderContext)
4117	{
4118	int rc = ShaderContextDestroy(pContext->pShaderContext);
4119	AssertRC(rc);
4120	}
4121
4122	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
4123	{
4124	/* Unbind the object from the framebuffer target. */
4125	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
4126	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4127	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
4128	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4129
4130	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
4131	{
4132	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
4133	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4134	}
4135	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
4136	{
4137	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
4138	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4139	}
4140	}
4141
4142	vmsvga3dBackOcclusionQueryDelete(pThisCC, pContext);
4143
4144	#ifdef RT_OS_WINDOWS
4145	wglMakeCurrent(pContext->hdc, NULL);
4146	wglDeleteContext(pContext->hglrc);
4147	ReleaseDC(pContext->hwnd, pContext->hdc);
4148
4149	/* Destroy the window we've created. */
4150	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
4151	AssertRC(rc);
4152	#elif defined(RT_OS_DARWIN)
4153	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
4154	#elif defined(RT_OS_LINUX)
4155	glXMakeCurrent(pState->display, None, NULL);
4156	glXDestroyContext(pState->display, pContext->glxContext);
4157	XDestroyWindow(pState->display, pContext->window);
4158	#endif
4159
4160	memset(pContext, 0, sizeof(*pContext));
4161	pContext->id = SVGA3D_INVALID_ID;
4162
4163	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
4164	return VINF_SUCCESS;
4165	}
4166
4167	/**
4168	* Destroy an existing 3d context
4169	*
4170	* @returns VBox status code.
4171	* @param pThisCC The VGA/VMSVGA state for ring-3.
4172	* @param cid Context id
4173	*/
4174	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid)
4175	{
4176	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4177	AssertReturn(pState, VERR_WRONG_ORDER);
4178
4179	/*
4180	* Resolve the context and hand it to the common worker function.
4181	*/
4182	if ( cid < pState->cContexts
4183	&& pState->papContexts[cid]->id == cid)
4184	return vmsvga3dContextDestroyOgl(pThisCC, pState->papContexts[cid], cid);
4185
4186	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
4187	return VINF_SUCCESS;
4188	}
4189
4190	/**
4191	* Worker for vmsvga3dBackChangeMode that resizes a context.
4192	*
4193	* @param pState The VMSVGA3d state.
4194	* @param pContext The context.
4195	*/
4196	static void vmsvga3dChangeModeOneContext(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
4197	{
4198	RT_NOREF(pState, pContext);
4199	/* Do nothing. The window is not used for presenting. */
4200	}
4201
4202	/* Handle resize */
4203	static DECLCALLBACK(int) vmsvga3dBackChangeMode(PVGASTATECC pThisCC)
4204	{
4205	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4206	AssertReturn(pState, VERR_NO_MEMORY);
4207
4208	/* Resize the shared context too. */
4209	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
4210	vmsvga3dChangeModeOneContext(pState, &pState->SharedCtx);
4211
4212	/* Resize all active contexts. */
4213	for (uint32_t i = 0; i < pState->cContexts; i++)
4214	{
4215	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
4216	if (pContext->id != SVGA3D_INVALID_ID)
4217	vmsvga3dChangeModeOneContext(pState, pContext);
4218	}
4219
4220	return VINF_SUCCESS;
4221	}
4222
4223
4224	static DECLCALLBACK(int) vmsvga3dBackSetTransform(PVGASTATECC pThisCC, uint32_t cid, SVGA3dTransformType type, float matrix[16])
4225	{
4226	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4227	AssertReturn(pState, VERR_NO_MEMORY);
4228	bool fModelViewChanged = false;
4229
4230	Log(("vmsvga3dSetTransform cid=%u %s\n", cid, vmsvgaTransformToString(type)));
4231
4232	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
4233
4234	PVMSVGA3DCONTEXT pContext;
4235	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4236	AssertRCReturn(rc, rc);
4237
4238	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4239
4240	/* Save this matrix for vm state save/restore. */
4241	pContext->state.aTransformState[type].fValid = true;
4242	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
4243	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
4244
4245	Log(("Matrix [%d %d %d %d]\n", (int)(matrix[0] * 10.0), (int)(matrix[1] * 10.0), (int)(matrix[2] * 10.0), (int)(matrix[3] * 10.0)));
4246	Log((" [%d %d %d %d]\n", (int)(matrix[4] * 10.0), (int)(matrix[5] * 10.0), (int)(matrix[6] * 10.0), (int)(matrix[7] * 10.0)));
4247	Log((" [%d %d %d %d]\n", (int)(matrix[8] * 10.0), (int)(matrix[9] * 10.0), (int)(matrix[10] * 10.0), (int)(matrix[11] * 10.0)));
4248	Log((" [%d %d %d %d]\n", (int)(matrix[12] * 10.0), (int)(matrix[13] * 10.0), (int)(matrix[14] * 10.0), (int)(matrix[15] * 10.0)));
4249
4250	switch (type)
4251	{
4252	case SVGA3D_TRANSFORM_VIEW:
4253	/* View * World = Model View */
4254	glMatrixMode(GL_MODELVIEW);
4255	glLoadMatrixf(matrix);
4256	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
4257	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
4258	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4259	fModelViewChanged = true;
4260	break;
4261
4262	case SVGA3D_TRANSFORM_PROJECTION:
4263	{
4264	rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
4265	AssertRCReturn(rc, rc);
4266	break;
4267	}
4268
4269	case SVGA3D_TRANSFORM_TEXTURE0:
4270	glMatrixMode(GL_TEXTURE);
4271	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4272	glLoadMatrixf(matrix);
4273	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4274	break;
4275
4276	case SVGA3D_TRANSFORM_TEXTURE1:
4277	case SVGA3D_TRANSFORM_TEXTURE2:
4278	case SVGA3D_TRANSFORM_TEXTURE3:
4279	case SVGA3D_TRANSFORM_TEXTURE4:
4280	case SVGA3D_TRANSFORM_TEXTURE5:
4281	case SVGA3D_TRANSFORM_TEXTURE6:
4282	case SVGA3D_TRANSFORM_TEXTURE7:
4283	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
4284	return VERR_INVALID_PARAMETER;
4285
4286	case SVGA3D_TRANSFORM_WORLD:
4287	/* View * World = Model View */
4288	glMatrixMode(GL_MODELVIEW);
4289	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
4290	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
4291	else
4292	glLoadIdentity();
4293	glMultMatrixf(matrix);
4294	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4295	fModelViewChanged = true;
4296	break;
4297
4298	case SVGA3D_TRANSFORM_WORLD1:
4299	case SVGA3D_TRANSFORM_WORLD2:
4300	case SVGA3D_TRANSFORM_WORLD3:
4301	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
4302	return VERR_INVALID_PARAMETER;
4303
4304	default:
4305	Log(("vmsvga3dSetTransform: unknown type!!\n"));
4306	return VERR_INVALID_PARAMETER;
4307	}
4308
4309	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
4310	if (fModelViewChanged)
4311	{
4312	/* Reprogram the clip planes. */
4313	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
4314	{
4315	if (pContext->state.aClipPlane[j].fValid == true)
4316	vmsvga3dBackSetClipPlane(pThisCC, cid, j, pContext->state.aClipPlane[j].plane);
4317	}
4318
4319	/* Reprogram the light data. */
4320	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
4321	{
4322	if (pContext->state.aLightData[j].fValidData == true)
4323	vmsvga3dBackSetLightData(pThisCC, cid, j, &pContext->state.aLightData[j].data);
4324	}
4325	}
4326
4327	return VINF_SUCCESS;
4328	}
4329
4330	static DECLCALLBACK(int) vmsvga3dBackSetZRange(PVGASTATECC pThisCC, uint32_t cid, SVGA3dZRange zRange)
4331	{
4332	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4333	AssertReturn(pState, VERR_NO_MEMORY);
4334
4335	Log(("vmsvga3dSetZRange cid=%u min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
4336
4337	PVMSVGA3DCONTEXT pContext;
4338	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4339	AssertRCReturn(rc, rc);
4340
4341	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4342
4343	pContext->state.zRange = zRange;
4344	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
4345
4346	if (zRange.min < -1.0)
4347	zRange.min = -1.0;
4348	if (zRange.max > 1.0)
4349	zRange.max = 1.0;
4350
4351	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
4352	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4353	return VINF_SUCCESS;
4354	}
4355
4356	/**
4357	* Convert SVGA blend op value to its OpenGL equivalent
4358	*/
4359	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
4360	{
4361	switch (blendOp)
4362	{
4363	case SVGA3D_BLENDOP_ZERO:
4364	return GL_ZERO;
4365	case SVGA3D_BLENDOP_ONE:
4366	return GL_ONE;
4367	case SVGA3D_BLENDOP_SRCCOLOR:
4368	return GL_SRC_COLOR;
4369	case SVGA3D_BLENDOP_INVSRCCOLOR:
4370	return GL_ONE_MINUS_SRC_COLOR;
4371	case SVGA3D_BLENDOP_SRCALPHA:
4372	return GL_SRC_ALPHA;
4373	case SVGA3D_BLENDOP_INVSRCALPHA:
4374	return GL_ONE_MINUS_SRC_ALPHA;
4375	case SVGA3D_BLENDOP_DESTALPHA:
4376	return GL_DST_ALPHA;
4377	case SVGA3D_BLENDOP_INVDESTALPHA:
4378	return GL_ONE_MINUS_DST_ALPHA;
4379	case SVGA3D_BLENDOP_DESTCOLOR:
4380	return GL_DST_COLOR;
4381	case SVGA3D_BLENDOP_INVDESTCOLOR:
4382	return GL_ONE_MINUS_DST_COLOR;
4383	case SVGA3D_BLENDOP_SRCALPHASAT:
4384	return GL_SRC_ALPHA_SATURATE;
4385	case SVGA3D_BLENDOP_BLENDFACTOR:
4386	return GL_CONSTANT_COLOR;
4387	case SVGA3D_BLENDOP_INVBLENDFACTOR:
4388	return GL_ONE_MINUS_CONSTANT_COLOR;
4389	default:
4390	AssertFailed();
4391	return GL_ONE;
4392	}
4393	}
4394
4395	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
4396	{
4397	switch (blendEq)
4398	{
4399	case SVGA3D_BLENDEQ_ADD:
4400	return GL_FUNC_ADD;
4401	case SVGA3D_BLENDEQ_SUBTRACT:
4402	return GL_FUNC_SUBTRACT;
4403	case SVGA3D_BLENDEQ_REVSUBTRACT:
4404	return GL_FUNC_REVERSE_SUBTRACT;
4405	case SVGA3D_BLENDEQ_MINIMUM:
4406	return GL_MIN;
4407	case SVGA3D_BLENDEQ_MAXIMUM:
4408	return GL_MAX;
4409	default:
4410	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
4411	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
4412	return GL_FUNC_ADD;
4413	}
4414	}
4415
4416	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
4417	{
4418	switch (cmpFunc)
4419	{
4420	case SVGA3D_CMP_NEVER:
4421	return GL_NEVER;
4422	case SVGA3D_CMP_LESS:
4423	return GL_LESS;
4424	case SVGA3D_CMP_EQUAL:
4425	return GL_EQUAL;
4426	case SVGA3D_CMP_LESSEQUAL:
4427	return GL_LEQUAL;
4428	case SVGA3D_CMP_GREATER:
4429	return GL_GREATER;
4430	case SVGA3D_CMP_NOTEQUAL:
4431	return GL_NOTEQUAL;
4432	case SVGA3D_CMP_GREATEREQUAL:
4433	return GL_GEQUAL;
4434	case SVGA3D_CMP_ALWAYS:
4435	return GL_ALWAYS;
4436	default:
4437	Assert(cmpFunc == SVGA3D_CMP_INVALID);
4438	return GL_LESS;
4439	}
4440	}
4441
4442	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
4443	{
4444	switch (stencilOp)
4445	{
4446	case SVGA3D_STENCILOP_KEEP:
4447	return GL_KEEP;
4448	case SVGA3D_STENCILOP_ZERO:
4449	return GL_ZERO;
4450	case SVGA3D_STENCILOP_REPLACE:
4451	return GL_REPLACE;
4452	case SVGA3D_STENCILOP_INCRSAT:
4453	return GL_INCR_WRAP;
4454	case SVGA3D_STENCILOP_DECRSAT:
4455	return GL_DECR_WRAP;
4456	case SVGA3D_STENCILOP_INVERT:
4457	return GL_INVERT;
4458	case SVGA3D_STENCILOP_INCR:
4459	return GL_INCR;
4460	case SVGA3D_STENCILOP_DECR:
4461	return GL_DECR;
4462	default:
4463	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4464	return GL_KEEP;
4465	}
4466	}
4467
4468	static DECLCALLBACK(int) vmsvga3dBackSetRenderState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4469	{
4470	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4471	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4472	AssertReturn(pState, VERR_NO_MEMORY);
4473
4474	Log(("vmsvga3dSetRenderState cid=%u cRenderStates=%d\n", cid, cRenderStates));
4475
4476	PVMSVGA3DCONTEXT pContext;
4477	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4478	AssertRCReturn(rc, rc);
4479
4480	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4481
4482	for (unsigned i = 0; i < cRenderStates; i++)
4483	{
4484	GLenum enableCap = ~(GLenum)0;
4485	Log(("vmsvga3dSetRenderState: cid=%u state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4486	/* Save the render state for vm state saving. */
4487	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
4488	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4489
4490	switch (pRenderState[i].state)
4491	{
4492	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4493	enableCap = GL_DEPTH_TEST;
4494	val = pRenderState[i].uintValue;
4495	break;
4496
4497	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4498	glDepthMask(!!pRenderState[i].uintValue);
4499	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4500	break;
4501
4502	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4503	enableCap = GL_ALPHA_TEST;
4504	val = pRenderState[i].uintValue;
4505	break;
4506
4507	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4508	enableCap = GL_DITHER;
4509	val = pRenderState[i].uintValue;
4510	break;
4511
4512	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4513	enableCap = GL_FOG;
4514	val = pRenderState[i].uintValue;
4515	break;
4516
4517	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4518	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4519	break;
4520
4521	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4522	enableCap = GL_LIGHTING;
4523	val = pRenderState[i].uintValue;
4524	break;
4525
4526	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4527	/* not applicable */
4528	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4529	break;
4530
4531	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4532	enableCap = GL_POINT_SPRITE_ARB;
4533	val = pRenderState[i].uintValue;
4534	break;
4535
4536	case SVGA3D_RS_POINTSIZE: /* float */
4537	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4538	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4539	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4540	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4541	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4542
4543	glPointSize(pRenderState[i].floatValue);
4544	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4545	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4546	break;
4547
4548	case SVGA3D_RS_POINTSIZEMIN: /* float */
4549	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4550	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4551	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4552	break;
4553
4554	case SVGA3D_RS_POINTSIZEMAX: /* float */
4555	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4556	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4557	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4558	break;
4559
4560	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4561	case SVGA3D_RS_POINTSCALE_A: /* float */
4562	case SVGA3D_RS_POINTSCALE_B: /* float */
4563	case SVGA3D_RS_POINTSCALE_C: /* float */
4564	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4565	break;
4566
4567	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4568	{
4569	GLfloat color[4]; /* red, green, blue, alpha */
4570
4571	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4572
4573	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4574	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4575	break;
4576	}
4577
4578	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4579	{
4580	for (uint32_t j = 0; j < SVGA3D_NUM_CLIPPLANES; j++)
4581	{
4582	if (pRenderState[i].uintValue & RT_BIT(j))
4583	glEnable(GL_CLIP_PLANE0 + j);
4584	else
4585	glDisable(GL_CLIP_PLANE0 + j);
4586	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4587	}
4588	break;
4589	}
4590
4591	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4592	{
4593	GLfloat color[4]; /* red, green, blue, alpha */
4594
4595	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4596
4597	glFogfv(GL_FOG_COLOR, color);
4598	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4599	break;
4600	}
4601
4602	case SVGA3D_RS_FOGSTART: /* float */
4603	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4604	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4605	break;
4606
4607	case SVGA3D_RS_FOGEND: /* float */
4608	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4609	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4610	break;
4611
4612	case SVGA3D_RS_FOGDENSITY: /* float */
4613	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4614	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4615	break;
4616
4617	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4618	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4619	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4620	break;
4621
4622	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4623	{
4624	SVGA3dFogMode mode;
4625	mode.uintValue = pRenderState[i].uintValue;
4626
4627	enableCap = GL_FOG_MODE;
4628	switch (mode.function)
4629	{
4630	case SVGA3D_FOGFUNC_EXP:
4631	val = GL_EXP;
4632	break;
4633	case SVGA3D_FOGFUNC_EXP2:
4634	val = GL_EXP2;
4635	break;
4636	case SVGA3D_FOGFUNC_LINEAR:
4637	val = GL_LINEAR;
4638	break;
4639	default:
4640	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.function), VERR_INTERNAL_ERROR);
4641	break;
4642	}
4643
4644	/** @todo how to switch between vertex and pixel fog modes??? */
4645	Assert(mode.type == SVGA3D_FOGTYPE_PIXEL);
4646	#if 0
4647	/* The fog type determines the render state. */
4648	switch (mode.type)
4649	{
4650	case SVGA3D_FOGTYPE_VERTEX:
4651	renderState = D3DRS_FOGVERTEXMODE;
4652	break;
4653	case SVGA3D_FOGTYPE_PIXEL:
4654	renderState = D3DRS_FOGTABLEMODE;
4655	break;
4656	default:
4657	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.type), VERR_INTERNAL_ERROR);
4658	break;
4659	}
4660	#endif
4661
4662	/* Set the fog base to depth or range. */
4663	switch (mode.base)
4664	{
4665	case SVGA3D_FOGBASE_DEPTHBASED:
4666	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4667	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4668	break;
4669	case SVGA3D_FOGBASE_RANGEBASED:
4670	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4671	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4672	break;
4673	default:
4674	/* ignore */
4675	AssertMsgFailed(("Unexpected fog base %d\n", mode.base));
4676	break;
4677	}
4678	break;
4679	}
4680
4681	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4682	{
4683	SVGA3dFillMode mode;
4684
4685	mode.uintValue = pRenderState[i].uintValue;
4686
4687	switch (mode.mode)
4688	{
4689	case SVGA3D_FILLMODE_POINT:
4690	val = GL_POINT;
4691	break;
4692	case SVGA3D_FILLMODE_LINE:
4693	val = GL_LINE;
4694	break;
4695	case SVGA3D_FILLMODE_FILL:
4696	val = GL_FILL;
4697	break;
4698	default:
4699	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.mode), VERR_INTERNAL_ERROR);
4700	break;
4701	}
4702	/* Only front and back faces. Also recent Mesa guest drivers initialize the 'face' to zero. */
4703	ASSERT_GUEST(mode.face == SVGA3D_FACE_FRONT_BACK \|\| mode.face == SVGA3D_FACE_INVALID);
4704	glPolygonMode(GL_FRONT_AND_BACK, val);
4705	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4706	break;
4707	}
4708
4709	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4710	switch (pRenderState[i].uintValue)
4711	{
4712	case SVGA3D_SHADEMODE_FLAT:
4713	val = GL_FLAT;
4714	break;
4715
4716	case SVGA3D_SHADEMODE_SMOOTH:
4717	val = GL_SMOOTH;
4718	break;
4719
4720	default:
4721	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4722	break;
4723	}
4724
4725	glShadeModel(val);
4726	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4727	break;
4728
4729	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4730	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4731	/** @todo */
4732	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4733	/*
4734	renderState = D3DRS_LINEPATTERN;
4735	val = pRenderState[i].uintValue;
4736	*/
4737	break;
4738
4739	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4740	enableCap = GL_LINE_SMOOTH;
4741	val = pRenderState[i].uintValue;
4742	break;
4743
4744	case SVGA3D_RS_LINEWIDTH: /* float */
4745	glLineWidth(pRenderState[i].floatValue);
4746	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4747	break;
4748
4749	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4750	{
4751	/* Refresh the blending state based on the new enable setting.
4752	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4753	*/
4754	static SVGA3dRenderStateName const saRefreshState[] =
4755	{
4756	SVGA3D_RS_SRCBLEND,
4757	SVGA3D_RS_BLENDEQUATION
4758	};
4759	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4760	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4761	{
4762	renderstate[j].state = saRefreshState[j];
4763	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4764	}
4765
4766	rc = vmsvga3dBackSetRenderState(pThisCC, cid, 2, renderstate);
4767	AssertRCReturn(rc, rc);
4768
4769	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4770	continue; /* Ignore if blend is enabled */
4771	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4772	} RT_FALL_THRU();
4773
4774	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4775	enableCap = GL_BLEND;
4776	val = pRenderState[i].uintValue;
4777	break;
4778
4779	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4780	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4781	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4782	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4783	{
4784	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4785	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4786
4787	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4788	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4789	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4790	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4791	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4792	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4793	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4794	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4795
4796	switch (pRenderState[i].state)
4797	{
4798	case SVGA3D_RS_SRCBLEND:
4799	srcRGB = blendop;
4800	break;
4801	case SVGA3D_RS_DSTBLEND:
4802	dstRGB = blendop;
4803	break;
4804	case SVGA3D_RS_SRCBLENDALPHA:
4805	srcAlpha = blendop;
4806	break;
4807	case SVGA3D_RS_DSTBLENDALPHA:
4808	dstAlpha = blendop;
4809	break;
4810	default:
4811	/* not possible; shut up gcc */
4812	AssertFailed();
4813	break;
4814	}
4815
4816	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4817	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4818	else
4819	glBlendFunc(srcRGB, dstRGB);
4820	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4821	break;
4822	}
4823
4824	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4825	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4826	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4827	{
4828	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4829	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4830	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4831	}
4832	else
4833	{
4834	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4835	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4836	#else
4837	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4838	#endif
4839	}
4840	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4841	break;
4842
4843	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4844	{
4845	GLfloat red, green, blue, alpha;
4846
4847	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4848
4849	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4850	glBlendColor(red, green, blue, alpha);
4851	#else
4852	pState->ext.glBlendColor(red, green, blue, alpha);
4853	#endif
4854	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4855	break;
4856	}
4857
4858	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4859	{
4860	GLenum mode = GL_BACK; /* default for OpenGL */
4861
4862	switch (pRenderState[i].uintValue)
4863	{
4864	case SVGA3D_FACE_NONE:
4865	break;
4866	case SVGA3D_FACE_FRONT:
4867	mode = GL_FRONT;
4868	break;
4869	case SVGA3D_FACE_BACK:
4870	mode = GL_BACK;
4871	break;
4872	case SVGA3D_FACE_FRONT_BACK:
4873	mode = GL_FRONT_AND_BACK;
4874	break;
4875	default:
4876	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4877	break;
4878	}
4879	enableCap = GL_CULL_FACE;
4880	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4881	{
4882	glCullFace(mode);
4883	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4884	val = 1;
4885	}
4886	else
4887	val = 0;
4888	break;
4889	}
4890
4891	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4892	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4893	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4894	break;
4895
4896	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4897	{
4898	GLclampf ref;
4899
4900	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4901	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4902	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4903	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4904	break;
4905	}
4906
4907	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4908	{
4909	GLint func;
4910
4911	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4912	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4913	glAlphaFunc(func, pRenderState[i].floatValue);
4914	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4915	break;
4916	}
4917
4918	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4919	{
4920	/* Refresh the stencil state based on the new enable setting.
4921	* This will take existing states and set them using either glStencil or glStencil*Separate.
4922	*/
4923	static SVGA3dRenderStateName const saRefreshState[] =
4924	{
4925	SVGA3D_RS_STENCILFUNC,
4926	SVGA3D_RS_STENCILFAIL,
4927	SVGA3D_RS_CCWSTENCILFUNC,
4928	SVGA3D_RS_CCWSTENCILFAIL
4929	};
4930	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4931	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4932	{
4933	renderstate[j].state = saRefreshState[j];
4934	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4935	}
4936
4937	rc = vmsvga3dBackSetRenderState(pThisCC, cid, RT_ELEMENTS(renderstate), renderstate);
4938	AssertRCReturn(rc, rc);
4939
4940	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4941	continue; /* Ignore if stencil is enabled */
4942	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4943	} RT_FALL_THRU();
4944
4945	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4946	enableCap = GL_STENCIL_TEST;
4947	val = pRenderState[i].uintValue;
4948	break;
4949
4950	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4951	case SVGA3D_RS_STENCILREF: /* uint32_t */
4952	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4953	{
4954	GLint func, ref;
4955	GLuint mask;
4956
4957	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4958	glGetIntegerv(GL_STENCIL_FUNC, &func);
4959	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4960	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4961	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4962	glGetIntegerv(GL_STENCIL_REF, &ref);
4963	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4964
4965	/* Update the changed value. */
4966	switch (pRenderState[i].state)
4967	{
4968	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4969	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4970	break;
4971
4972	case SVGA3D_RS_STENCILREF: /* uint32_t */
4973	ref = pRenderState[i].uintValue;
4974	break;
4975
4976	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4977	mask = pRenderState[i].uintValue;
4978	break;
4979
4980	default:
4981	/* not possible; shut up gcc */
4982	AssertFailed();
4983	break;
4984	}
4985
4986	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4987	{
4988	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4989	}
4990	else
4991	{
4992	glStencilFunc(func, ref, mask);
4993	}
4994	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4995	break;
4996	}
4997
4998	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4999	glStencilMask(pRenderState[i].uintValue);
5000	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5001	break;
5002
5003	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
5004	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
5005	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
5006	{
5007	GLint sfail, dpfail, dppass;
5008	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
5009
5010	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
5011	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5012	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
5013	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5014	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
5015	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5016
5017	switch (pRenderState[i].state)
5018	{
5019	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
5020	sfail = stencilop;
5021	break;
5022	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
5023	dpfail = stencilop;
5024	break;
5025	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
5026	dppass = stencilop;
5027	break;
5028	default:
5029	/* not possible; shut up gcc */
5030	AssertFailed();
5031	break;
5032	}
5033	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
5034	{
5035	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
5036	}
5037	else
5038	{
5039	glStencilOp(sfail, dpfail, dppass);
5040	}
5041	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5042	break;
5043	}
5044
5045	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
5046	{
5047	GLint ref;
5048	GLuint mask;
5049	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
5050
5051	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
5052	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
5053	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5054	glGetIntegerv(GL_STENCIL_REF, &ref);
5055	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5056
5057	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
5058	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5059	break;
5060	}
5061
5062	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5063	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5064	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5065	{
5066	GLint sfail, dpfail, dppass;
5067	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
5068
5069	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
5070	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5071	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
5072	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5073	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
5074	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5075
5076	switch (pRenderState[i].state)
5077	{
5078	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5079	sfail = stencilop;
5080	break;
5081	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5082	dpfail = stencilop;
5083	break;
5084	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5085	dppass = stencilop;
5086	break;
5087	default:
5088	/* not possible; shut up gcc */
5089	AssertFailed();
5090	break;
5091	}
5092	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
5093	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5094	break;
5095	}
5096
5097	case SVGA3D_RS_ZBIAS: /* float */
5098	/** @todo unknown meaning; depth bias is not identical
5099	renderState = D3DRS_DEPTHBIAS;
5100	val = pRenderState[i].uintValue;
5101	*/
5102	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
5103	break;
5104
5105	case SVGA3D_RS_DEPTHBIAS: /* float */
5106	{
5107	GLfloat factor;
5108
5109	/** @todo not sure if the d3d & ogl definitions are identical. */
5110
5111	/* Do not change the factor part. */
5112	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
5113	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5114
5115	glPolygonOffset(factor, pRenderState[i].floatValue);
5116	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5117	break;
5118	}
5119
5120	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
5121	{
5122	GLfloat units;
5123
5124	/** @todo not sure if the d3d & ogl definitions are identical. */
5125
5126	/* Do not change the factor part. */
5127	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
5128	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5129
5130	glPolygonOffset(pRenderState[i].floatValue, units);
5131	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5132	break;
5133	}
5134
5135	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
5136	{
5137	GLboolean red, green, blue, alpha;
5138	SVGA3dColorMask mask;
5139
5140	mask.uintValue = pRenderState[i].uintValue;
5141
5142	red = mask.red;
5143	green = mask.green;
5144	blue = mask.blue;
5145	alpha = mask.alpha;
5146
5147	glColorMask(red, green, blue, alpha);
5148	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5149	break;
5150	}
5151
5152	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5153	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5154	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5155	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
5156	break;
5157
5158	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
5159	enableCap = GL_SCISSOR_TEST;
5160	val = pRenderState[i].uintValue;
5161	break;
5162
5163	#if 0
5164	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5165	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
5166	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
5167	val = pRenderState[i].uintValue;
5168	break;
5169
5170	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
5171	renderState = D3DRS_SPECULARMATERIALSOURCE;
5172	val = pRenderState[i].uintValue;
5173	break;
5174
5175	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
5176	renderState = D3DRS_AMBIENTMATERIALSOURCE;
5177	val = pRenderState[i].uintValue;
5178	break;
5179
5180	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5181	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
5182	val = pRenderState[i].uintValue;
5183	break;
5184	#endif
5185
5186	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
5187	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
5188	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
5189	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
5190	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
5191	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
5192	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
5193	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
5194	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
5195	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
5196	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
5197	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
5198	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
5199	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
5200	break;
5201
5202	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
5203	case SVGA3D_RS_TWEENFACTOR: /* float */
5204	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
5205	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
5206	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
5207	break;
5208
5209	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
5210	enableCap = GL_MULTISAMPLE;
5211	val = pRenderState[i].uintValue;
5212	break;
5213
5214	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
5215	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
5216	break;
5217
5218	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
5219	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
5220	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
5221	/*
5222	renderState = D3DRS_COORDINATETYPE;
5223	val = pRenderState[i].uintValue;
5224	*/
5225	break;
5226
5227	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
5228	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
5229	/* Invert the selected mode because of y-inversion (?) */
5230	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
5231	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5232	break;
5233
5234	case SVGA3D_RS_OUTPUTGAMMA: /* float */
5235	//AssertFailed();
5236	/*
5237	D3DRS_SRGBWRITEENABLE ??
5238	renderState = D3DRS_OUTPUTGAMMA;
5239	val = pRenderState[i].uintValue;
5240	*/
5241	break;
5242
5243	#if 0
5244
5245	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
5246	//AssertFailed();
5247	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
5248	val = pRenderState[i].uintValue;
5249	break;
5250
5251	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
5252	renderState = D3DRS_TEXTUREFACTOR;
5253	val = pRenderState[i].uintValue;
5254	break;
5255
5256	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
5257	renderState = D3DRS_LOCALVIEWER;
5258	val = pRenderState[i].uintValue;
5259	break;
5260
5261	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
5262	AssertFailed();
5263	/*
5264	renderState = D3DRS_ZVISIBLE;
5265	val = pRenderState[i].uintValue;
5266	*/
5267	break;
5268
5269	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
5270	renderState = D3DRS_CLIPPING;
5271	val = pRenderState[i].uintValue;
5272	break;
5273
5274	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
5275	glTexParameter GL_TEXTURE_WRAP_S
5276	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
5277	renderState = D3DRS_WRAP0;
5278	val = pRenderState[i].uintValue;
5279	break;
5280
5281	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
5282	glTexParameter GL_TEXTURE_WRAP_T
5283	renderState = D3DRS_WRAP1;
5284	val = pRenderState[i].uintValue;
5285	break;
5286
5287	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
5288	glTexParameter GL_TEXTURE_WRAP_R
5289	renderState = D3DRS_WRAP2;
5290	val = pRenderState[i].uintValue;
5291	break;
5292
5293
5294	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
5295	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
5296	val = pRenderState[i].uintValue;
5297	break;
5298
5299
5300	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
5301	renderState = D3DRS_BLENDOPALPHA;
5302	val = pRenderState[i].uintValue;
5303	break;
5304
5305	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
5306	AssertFailed();
5307	/*
5308	renderState = D3DRS_TRANSPARENCYANTIALIAS;
5309	val = pRenderState[i].uintValue;
5310	*/
5311	break;
5312
5313	#endif
5314	default:
5315	AssertFailed();
5316	break;
5317	}
5318
5319	if (enableCap != ~(GLenum)0)
5320	{
5321	if (val)
5322	glEnable(enableCap);
5323	else
5324	glDisable(enableCap);
5325	}
5326	}
5327
5328	return VINF_SUCCESS;
5329	}
5330
5331	static DECLCALLBACK(int) vmsvga3dBackSetRenderTarget(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
5332	{
5333	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5334
5335	AssertReturn(pState, VERR_NO_MEMORY);
5336	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
5337
5338	LogFunc(("cid=%u type=%x sid=%u\n", cid, type, target.sid));
5339
5340	PVMSVGA3DCONTEXT pContext;
5341	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5342	AssertRCReturn(rc, rc);
5343
5344	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5345
5346	/* Save for vm state save/restore. */
5347	pContext->state.aRenderTargets[type] = target.sid;
5348
5349	if (target.sid == SVGA3D_INVALID_ID)
5350	{
5351	/* Disable render target. */
5352	switch (type)
5353	{
5354	case SVGA3D_RT_DEPTH:
5355	case SVGA3D_RT_STENCIL:
5356	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
5357	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5358	break;
5359
5360	case SVGA3D_RT_COLOR0:
5361	case SVGA3D_RT_COLOR1:
5362	case SVGA3D_RT_COLOR2:
5363	case SVGA3D_RT_COLOR3:
5364	case SVGA3D_RT_COLOR4:
5365	case SVGA3D_RT_COLOR5:
5366	case SVGA3D_RT_COLOR6:
5367	case SVGA3D_RT_COLOR7:
5368	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
5369	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5370	break;
5371
5372	default:
5373	AssertFailedReturn(VERR_INVALID_PARAMETER);
5374	}
5375	return VINF_SUCCESS;
5376	}
5377
5378	PVMSVGA3DSURFACE pRenderTarget;
5379	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
5380	AssertRCReturn(rc, rc);
5381
5382	switch (type)
5383	{
5384	case SVGA3D_RT_DEPTH:
5385	case SVGA3D_RT_STENCIL:
5386	#if 1
5387	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5388	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5389	{
5390	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
5391	target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->format));
5392	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5393	AssertRCReturn(rc, rc);
5394	}
5395
5396	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5397	Assert(!pRenderTarget->fDirty);
5398
5399	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5400
5401	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
5402	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5403	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
5404	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5405	#else
5406	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
5407	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5408	{
5409	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->internalFormatGL));
5410	pContext = &pState->SharedCtx;
5411	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5412
5413	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
5414	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5415	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
5416
5417	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5418	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5419
5420	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
5421	pRenderTarget->internalFormatGL,
5422	pRenderTarget->paMipmapLevels[0].mipmapSize.width,
5423	pRenderTarget->paMipmapLevels[0].mipmapSize.height);
5424	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5425
5426	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
5427	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5428
5429	pContext = pState->papContexts[cid];
5430	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5431	}
5432
5433	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5434	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5435	Assert(!pRenderTarget->fDirty);
5436	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5437
5438	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5439
5440	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
5441	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5442	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5443	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5444	#endif
5445	break;
5446
5447	case SVGA3D_RT_COLOR0:
5448	case SVGA3D_RT_COLOR1:
5449	case SVGA3D_RT_COLOR2:
5450	case SVGA3D_RT_COLOR3:
5451	case SVGA3D_RT_COLOR4:
5452	case SVGA3D_RT_COLOR5:
5453	case SVGA3D_RT_COLOR6:
5454	case SVGA3D_RT_COLOR7:
5455	{
5456	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5457	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5458	{
5459	Log(("vmsvga3dSetRenderTarget: create texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n", target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->format));
5460	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5461	AssertRCReturn(rc, rc);
5462	}
5463
5464	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5465	Assert(!pRenderTarget->fDirty);
5466
5467	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5468
5469	GLenum textarget;
5470	if (pRenderTarget->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
5471	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5472	else
5473	textarget = GL_TEXTURE_2D;
5474	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5475	textarget, pRenderTarget->oglId.texture, target.mipmap);
5476	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5477
5478	#ifdef DEBUG
5479	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5480	if (status != GL_FRAMEBUFFER_COMPLETE)
5481	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5482	#endif
5483	/** @todo use glDrawBuffers too? */
5484	break;
5485	}
5486
5487	default:
5488	AssertFailedReturn(VERR_INVALID_PARAMETER);
5489	}
5490
5491	return VINF_SUCCESS;
5492	}
5493
5494	#if 0
5495	/**
5496	* Convert SVGA texture combiner value to its D3D equivalent
5497	*/
5498	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5499	{
5500	switch (value)
5501	{
5502	case SVGA3D_TC_DISABLE:
5503	return D3DTOP_DISABLE;
5504	case SVGA3D_TC_SELECTARG1:
5505	return D3DTOP_SELECTARG1;
5506	case SVGA3D_TC_SELECTARG2:
5507	return D3DTOP_SELECTARG2;
5508	case SVGA3D_TC_MODULATE:
5509	return D3DTOP_MODULATE;
5510	case SVGA3D_TC_ADD:
5511	return D3DTOP_ADD;
5512	case SVGA3D_TC_ADDSIGNED:
5513	return D3DTOP_ADDSIGNED;
5514	case SVGA3D_TC_SUBTRACT:
5515	return D3DTOP_SUBTRACT;
5516	case SVGA3D_TC_BLENDTEXTUREALPHA:
5517	return D3DTOP_BLENDTEXTUREALPHA;
5518	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5519	return D3DTOP_BLENDDIFFUSEALPHA;
5520	case SVGA3D_TC_BLENDCURRENTALPHA:
5521	return D3DTOP_BLENDCURRENTALPHA;
5522	case SVGA3D_TC_BLENDFACTORALPHA:
5523	return D3DTOP_BLENDFACTORALPHA;
5524	case SVGA3D_TC_MODULATE2X:
5525	return D3DTOP_MODULATE2X;
5526	case SVGA3D_TC_MODULATE4X:
5527	return D3DTOP_MODULATE4X;
5528	case SVGA3D_TC_DSDT:
5529	AssertFailed(); /** @todo ??? */
5530	return D3DTOP_DISABLE;
5531	case SVGA3D_TC_DOTPRODUCT3:
5532	return D3DTOP_DOTPRODUCT3;
5533	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5534	return D3DTOP_BLENDTEXTUREALPHAPM;
5535	case SVGA3D_TC_ADDSIGNED2X:
5536	return D3DTOP_ADDSIGNED2X;
5537	case SVGA3D_TC_ADDSMOOTH:
5538	return D3DTOP_ADDSMOOTH;
5539	case SVGA3D_TC_PREMODULATE:
5540	return D3DTOP_PREMODULATE;
5541	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5542	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5543	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5544	return D3DTOP_MODULATECOLOR_ADDALPHA;
5545	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5546	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5547	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5548	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5549	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5550	return D3DTOP_BUMPENVMAPLUMINANCE;
5551	case SVGA3D_TC_MULTIPLYADD:
5552	return D3DTOP_MULTIPLYADD;
5553	case SVGA3D_TC_LERP:
5554	return D3DTOP_LERP;
5555	default:
5556	AssertFailed();
5557	return D3DTOP_DISABLE;
5558	}
5559	}
5560
5561	/**
5562	* Convert SVGA texture arg data value to its D3D equivalent
5563	*/
5564	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5565	{
5566	switch (value)
5567	{
5568	case SVGA3D_TA_CONSTANT:
5569	return D3DTA_CONSTANT;
5570	case SVGA3D_TA_PREVIOUS:
5571	return D3DTA_CURRENT; /* current = previous */
5572	case SVGA3D_TA_DIFFUSE:
5573	return D3DTA_DIFFUSE;
5574	case SVGA3D_TA_TEXTURE:
5575	return D3DTA_TEXTURE;
5576	case SVGA3D_TA_SPECULAR:
5577	return D3DTA_SPECULAR;
5578	default:
5579	AssertFailed();
5580	return 0;
5581	}
5582	}
5583
5584	/**
5585	* Convert SVGA texture transform flag value to its D3D equivalent
5586	*/
5587	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5588	{
5589	switch (value)
5590	{
5591	case SVGA3D_TEX_TRANSFORM_OFF:
5592	return D3DTTFF_DISABLE;
5593	case SVGA3D_TEX_TRANSFORM_S:
5594	return D3DTTFF_COUNT1; /** @todo correct? */
5595	case SVGA3D_TEX_TRANSFORM_T:
5596	return D3DTTFF_COUNT2; /** @todo correct? */
5597	case SVGA3D_TEX_TRANSFORM_R:
5598	return D3DTTFF_COUNT3; /** @todo correct? */
5599	case SVGA3D_TEX_TRANSFORM_Q:
5600	return D3DTTFF_COUNT4; /** @todo correct? */
5601	case SVGA3D_TEX_PROJECTED:
5602	return D3DTTFF_PROJECTED;
5603	default:
5604	AssertFailed();
5605	return 0;
5606	}
5607	}
5608	#endif
5609
5610	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5611	{
5612	switch (value)
5613	{
5614	case SVGA3D_TEX_ADDRESS_WRAP:
5615	return GL_REPEAT;
5616	case SVGA3D_TEX_ADDRESS_MIRROR:
5617	return GL_MIRRORED_REPEAT;
5618	case SVGA3D_TEX_ADDRESS_CLAMP:
5619	return GL_CLAMP_TO_EDGE;
5620	case SVGA3D_TEX_ADDRESS_BORDER:
5621	return GL_CLAMP_TO_BORDER;
5622	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5623	AssertFailed();
5624	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5625
5626	case SVGA3D_TEX_ADDRESS_EDGE:
5627	case SVGA3D_TEX_ADDRESS_INVALID:
5628	default:
5629	AssertFailed();
5630	return GL_REPEAT; /* default */
5631	}
5632	}
5633
5634	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5635	{
5636	switch (value)
5637	{
5638	case SVGA3D_TEX_FILTER_NONE:
5639	case SVGA3D_TEX_FILTER_LINEAR:
5640	case SVGA3D_TEX_FILTER_ANISOTROPIC: /* Anisotropic filtering is controlled by SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL */
5641	return GL_LINEAR;
5642	case SVGA3D_TEX_FILTER_NEAREST:
5643	return GL_NEAREST;
5644	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5645	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5646	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5647	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5648	default:
5649	AssertFailed();
5650	return GL_LINEAR; /* default */
5651	}
5652	}
5653
5654	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5655	{
5656	/* flip the red and blue bytes */
5657	uint8_t blue = value & 0xff;
5658	uint8_t red = (value >> 16) & 0xff;
5659	return (value & 0xff00ff00) \| red \| (blue << 16);
5660	}
5661
5662	static DECLCALLBACK(int) vmsvga3dBackSetTextureState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5663	{
5664	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5665	GLenum currentStage = ~(GLenum)0;
5666	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5667	AssertReturn(pState, VERR_NO_MEMORY);
5668
5669	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5670
5671	PVMSVGA3DCONTEXT pContext;
5672	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5673	AssertRCReturn(rc, rc);
5674
5675	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5676
5677	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5678	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5679
5680	for (uint32_t i = 0; i < cTextureStates; ++i)
5681	{
5682	GLenum textureType = ~(GLenum)0;
5683	#if 0
5684	GLenum samplerType = ~(GLenum)0;
5685	#endif
5686
5687	LogFunc(("cid=%u stage=%d type=%s (%x) val=%x\n",
5688	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5689
5690	/* Record the texture state for vm state saving. */
5691	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5692	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5693	{
5694	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5695	}
5696
5697	/* Activate the right texture unit for subsequent texture state changes. */
5698	if (pTextureState[i].stage != currentStage \|\| i == 0)
5699	{
5700	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5701	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5702	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5703	{
5704	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5705	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5706	currentStage = pTextureState[i].stage;
5707	}
5708	else
5709	{
5710	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5711	continue;
5712	}
5713
5714	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5715	{
5716	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5717	AssertRCReturn(rc, rc);
5718	}
5719	else
5720	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5721	}
5722
5723	switch (pTextureState[i].name)
5724	{
5725	case SVGA3D_TS_BUMPENVMAT00: /* float */
5726	case SVGA3D_TS_BUMPENVMAT01: /* float */
5727	case SVGA3D_TS_BUMPENVMAT10: /* float */
5728	case SVGA3D_TS_BUMPENVMAT11: /* float */
5729	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5730	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5731	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5732	break;
5733
5734	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5735	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5736	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5737	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5738	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5739	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5740	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5741	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5742	/** @todo not used by MesaGL */
5743	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5744	break;
5745	#if 0
5746
5747	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5748	textureType = D3DTSS_TEXCOORDINDEX;
5749	val = pTextureState[i].value;
5750	break;
5751
5752	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5753	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5754	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5755	break;
5756	#endif
5757
5758	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5759	{
5760	uint32_t const sid = pTextureState[i].value;
5761
5762	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u replacing sid=%u\n",
5763	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5764
5765	/* Only if texture actually changed. */ /// @todo needs testing.
5766	if (pContext->aSidActiveTextures[currentStage] != sid)
5767	{
5768	if (pCurrentTextureSurface)
5769	{
5770	/* Unselect the currently associated texture. */
5771	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5772	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5773
5774	if (currentStage < 8)
5775	{
5776	/* Necessary for the fixed pipeline. */
5777	glDisable(pCurrentTextureSurface->targetGL);
5778	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5779	}
5780
5781	pCurrentTextureSurface = NULL;
5782	}
5783
5784	if (sid == SVGA3D_INVALID_ID)
5785	{
5786	Assert(pCurrentTextureSurface == NULL);
5787	}
5788	else
5789	{
5790	PVMSVGA3DSURFACE pSurface;
5791	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5792	AssertRCReturn(rc, rc);
5793
5794	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u (%d,%d) replacing sid=%u\n",
5795	currentStage, sid, pSurface->paMipmapLevels[0].mipmapSize.width,
5796	pSurface->paMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5797
5798	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5799	{
5800	Log(("CreateTexture (%d,%d) levels=%d\n",
5801	pSurface->paMipmapLevels[0].mipmapSize.width, pSurface->paMipmapLevels[0].mipmapSize.height, pSurface->cLevels));
5802	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
5803	AssertRCReturn(rc, rc);
5804	}
5805
5806	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5807	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5808
5809	if (currentStage < 8)
5810	{
5811	/* Necessary for the fixed pipeline. */
5812	glEnable(pSurface->targetGL);
5813	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5814	}
5815
5816	/* Remember the currently active texture. */
5817	pCurrentTextureSurface = pSurface;
5818
5819	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5820	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5821	{
5822	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5823	{
5824	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5825
5826	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5827	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5828	vmsvga3dBackSetTextureState(pThisCC, pContext->id, 1, pTextureStateIter);
5829	}
5830	}
5831	}
5832
5833	pContext->aSidActiveTextures[currentStage] = sid;
5834	}
5835
5836	/* Finished; continue with the next one. */
5837	continue;
5838	}
5839
5840	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5841	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5842	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5843	break;
5844
5845	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5846	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5847	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5848	break;
5849
5850	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5851	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5852	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5853	break;
5854
5855	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5856	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5857	{
5858	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5859	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5860
5861	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5862	textureType = GL_TEXTURE_MIN_FILTER;
5863	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5864	{
5865	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5866	{
5867	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5868	val = GL_NEAREST_MIPMAP_LINEAR;
5869	else
5870	val = GL_NEAREST_MIPMAP_NEAREST;
5871	}
5872	else
5873	{
5874	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5875	val = GL_LINEAR_MIPMAP_LINEAR;
5876	else
5877	val = GL_LINEAR_MIPMAP_NEAREST;
5878	}
5879	}
5880	else
5881	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5882	break;
5883	}
5884
5885	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5886	textureType = GL_TEXTURE_MAG_FILTER;
5887	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5888	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5889	break;
5890
5891	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5892	{
5893	GLfloat color[4]; /* red, green, blue, alpha */
5894	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5895
5896	GLenum targetGL;
5897	if (pCurrentTextureSurface)
5898	targetGL = pCurrentTextureSurface->targetGL;
5899	else
5900	{
5901	/* No texture bound, assume 2D. */
5902	targetGL = GL_TEXTURE_2D;
5903	}
5904
5905	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5906	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5907	break;
5908	}
5909
5910	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5911	{
5912	GLenum targetGL;
5913	if (pCurrentTextureSurface)
5914	targetGL = pCurrentTextureSurface->targetGL;
5915	else
5916	{
5917	/* No texture bound, assume 2D. */
5918	targetGL = GL_TEXTURE_2D;
5919	}
5920
5921	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5922	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5923	break;
5924	}
5925
5926	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5927	textureType = GL_TEXTURE_BASE_LEVEL;
5928	val = pTextureState[i].value;
5929	break;
5930
5931	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5932	if (pState->caps.fTextureFilterAnisotropicSupported)
5933	{
5934	textureType = GL_TEXTURE_MAX_ANISOTROPY_EXT;
5935	val = RT_MIN((GLint)pTextureState[i].value, pState->caps.maxTextureAnisotropy);
5936	} /* otherwise ignore. */
5937	break;
5938
5939	#if 0
5940	case SVGA3D_TS_GAMMA: /* float */
5941	samplerType = D3DSAMP_SRGBTEXTURE;
5942	/* Boolean in D3D */
5943	if (pTextureState[i].floatValue == 1.0f)
5944	val = FALSE;
5945	else
5946	val = TRUE;
5947	break;
5948	#endif
5949	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5950	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5951	AssertFailed();
5952	break;
5953
5954	default:
5955	//AssertFailed();
5956	break;
5957	}
5958
5959	if (textureType != ~(GLenum)0)
5960	{
5961	GLenum targetGL;
5962	if (pCurrentTextureSurface)
5963	targetGL = pCurrentTextureSurface->targetGL;
5964	else
5965	{
5966	/* No texture bound, assume 2D. */
5967	targetGL = GL_TEXTURE_2D;
5968	}
5969
5970	switch (pTextureState[i].name)
5971	{
5972	case SVGA3D_TS_MINFILTER:
5973	case SVGA3D_TS_MAGFILTER:
5974	{
5975	if (pState->caps.fTextureFilterAnisotropicSupported)
5976	{
5977	uint32_t const anisotropyLevel = (SVGA3dTextureFilter)pTextureState[i].value == SVGA3D_TEX_FILTER_ANISOTROPIC
5978	? RT_MAX(1, pContext->state.aTextureStates[currentStage][SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL].value)
5979	: 1;
5980	glTexParameteri(targetGL, GL_TEXTURE_MAX_ANISOTROPY_EXT, RT_MIN((GLint)anisotropyLevel, pState->caps.maxTextureAnisotropy));
5981	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5982	}
5983	} break;
5984
5985	default: break;
5986	}
5987
5988	glTexParameteri(targetGL, textureType, val);
5989	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5990	}
5991	}
5992
5993	return VINF_SUCCESS;
5994	}
5995
5996	static DECLCALLBACK(int) vmsvga3dBackSetMaterial(PVGASTATECC pThisCC, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5997	{
5998	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5999	AssertReturn(pState, VERR_NO_MEMORY);
6000
6001	LogFunc(("cid=%u face %d\n", cid, face));
6002
6003	PVMSVGA3DCONTEXT pContext;
6004	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6005	AssertRCReturn(rc, rc);
6006
6007	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6008
6009	GLenum oglFace;
6010	switch (face)
6011	{
6012	case SVGA3D_FACE_NONE:
6013	case SVGA3D_FACE_FRONT:
6014	oglFace = GL_FRONT;
6015	break;
6016
6017	case SVGA3D_FACE_BACK:
6018	oglFace = GL_BACK;
6019	break;
6020
6021	case SVGA3D_FACE_FRONT_BACK:
6022	oglFace = GL_FRONT_AND_BACK;
6023	break;
6024
6025	default:
6026	AssertFailedReturn(VERR_INVALID_PARAMETER);
6027	}
6028
6029	/* Save for vm state save/restore. */
6030	pContext->state.aMaterial[face].fValid = true;
6031	pContext->state.aMaterial[face].material = *pMaterial;
6032	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
6033
6034	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
6035	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
6036	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
6037	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
6038	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
6039	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6040
6041	return VINF_SUCCESS;
6042	}
6043
6044	/** @todo Move into separate library as we are using logic from Wine here. */
6045	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
6046	{
6047	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6048	AssertReturn(pState, VERR_NO_MEMORY);
6049
6050	LogFunc(("vmsvga3dSetLightData cid=%u index=%d type=%d\n", cid, index, pData->type));
6051	ASSERT_GUEST_RETURN(index < SVGA3D_MAX_LIGHTS, VERR_INVALID_PARAMETER);
6052
6053	PVMSVGA3DCONTEXT pContext;
6054	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6055	AssertRCReturn(rc, rc);
6056
6057	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6058
6059	/* Store for vm state save/restore */
6060	pContext->state.aLightData[index].fValidData = true;
6061	pContext->state.aLightData[index].data = *pData;
6062
6063	if ( pData->attenuation0 < 0.0f
6064	\|\| pData->attenuation1 < 0.0f
6065	\|\| pData->attenuation2 < 0.0f)
6066	{
6067	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
6068	return VINF_SUCCESS; /* ignore; could crash the GL driver */
6069	}
6070
6071	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
6072	glMatrixMode(GL_MODELVIEW);
6073	glPushMatrix();
6074	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6075
6076	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
6077	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
6078	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
6079
6080	float QuadAttenuation;
6081	if (pData->range * pData->range >= FLT_MIN)
6082	QuadAttenuation = 1.4f / (pData->range * pData->range);
6083	else
6084	QuadAttenuation = 0.0f;
6085
6086	switch (pData->type)
6087	{
6088	case SVGA3D_LIGHTTYPE_POINT:
6089	{
6090	GLfloat position[4];
6091
6092	position[0] = pData->position[0];
6093	position[1] = pData->position[1];
6094	position[2] = pData->position[2];
6095	position[3] = 1.0f;
6096
6097	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6098	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6099
6100	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6101	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6102
6103	/* Attenuation - Are these right? guessing... */
6104	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6105	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6106
6107	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6108	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6109
6110	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6111	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6112
6113	/** @todo range */
6114	break;
6115	}
6116
6117	case SVGA3D_LIGHTTYPE_SPOT1:
6118	{
6119	GLfloat exponent;
6120	GLfloat position[4];
6121	const GLfloat pi = 4.0f * atanf(1.0f);
6122
6123	position[0] = pData->position[0];
6124	position[1] = pData->position[1];
6125	position[2] = pData->position[2];
6126	position[3] = 1.0f;
6127
6128	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6129	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6130
6131	position[0] = pData->direction[0];
6132	position[1] = pData->direction[1];
6133	position[2] = pData->direction[2];
6134	position[3] = 1.0f;
6135
6136	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
6137	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6138
6139	/*
6140	* opengl-ish and d3d-ish spot lights use too different models for the
6141	* light "intensity" as a function of the angle towards the main light direction,
6142	* so we only can approximate very roughly.
6143	* however spot lights are rather rarely used in games (if ever used at all).
6144	* furthermore if still used, probably nobody pays attention to such details.
6145	*/
6146	if (pData->falloff == 0)
6147	{
6148	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
6149	* falloff resp. exponent parameter as an exponent, so the spot light lighting
6150	* will always be 1.0 for both of them, and we don't have to care for the
6151	* rest of the rather complex calculation
6152	*/
6153	exponent = 0.0f;
6154	}
6155	else
6156	{
6157	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
6158	if (rho < 0.0001f)
6159	rho = 0.0001f;
6160	exponent = -0.3f/log(cos(rho/2));
6161	}
6162	if (exponent > 128.0f)
6163	exponent = 128.0f;
6164
6165	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
6166	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6167
6168	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
6169	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6170
6171	/* Attenuation - Are these right? guessing... */
6172	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6173	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6174
6175	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6176	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6177
6178	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6179	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6180
6181	/** @todo range */
6182	break;
6183	}
6184
6185	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
6186	{
6187	GLfloat position[4];
6188
6189	position[0] = -pData->direction[0];
6190	position[1] = -pData->direction[1];
6191	position[2] = -pData->direction[2];
6192	position[3] = 0.0f;
6193
6194	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
6195	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6196
6197	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6198	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6199
6200	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
6201	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6202	break;
6203	}
6204
6205	case SVGA3D_LIGHTTYPE_SPOT2:
6206	default:
6207	Log(("Unsupported light type!!\n"));
6208	rc = VERR_INVALID_PARAMETER;
6209	break;
6210	}
6211
6212	/* Restore the modelview matrix */
6213	glPopMatrix();
6214
6215	return rc;
6216	}
6217
6218	static DECLCALLBACK(int) vmsvga3dBackSetLightEnabled(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, uint32_t enabled)
6219	{
6220	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6221	AssertReturn(pState, VERR_NO_MEMORY);
6222
6223	LogFunc(("cid=%u %d -> %d\n", cid, index, enabled));
6224
6225	PVMSVGA3DCONTEXT pContext;
6226	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6227	AssertRCReturn(rc, rc);
6228
6229	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6230
6231	/* Store for vm state save/restore */
6232	if (index < SVGA3D_MAX_LIGHTS)
6233	pContext->state.aLightData[index].fEnabled = !!enabled;
6234	else
6235	AssertFailed();
6236
6237	if (enabled)
6238	{
6239	if (index < SVGA3D_MAX_LIGHTS)
6240	{
6241	/* Load the default settings if none have been set yet. */
6242	if (!pContext->state.aLightData[index].fValidData)
6243	vmsvga3dBackSetLightData(pThisCC, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
6244	}
6245	glEnable(GL_LIGHT0 + index);
6246	}
6247	else
6248	glDisable(GL_LIGHT0 + index);
6249
6250	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6251	return VINF_SUCCESS;
6252	}
6253
6254	static DECLCALLBACK(int) vmsvga3dBackSetViewPort(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6255	{
6256	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6257	AssertReturn(pState, VERR_NO_MEMORY);
6258
6259	Log(("vmsvga3dSetViewPort cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6260
6261	PVMSVGA3DCONTEXT pContext;
6262	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6263	AssertRCReturn(rc, rc);
6264
6265	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6266
6267	/* Save for vm state save/restore. */
6268	pContext->state.RectViewPort = *pRect;
6269	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
6270
6271	/** @todo y-inversion for partial viewport coordinates? */
6272	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
6273	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6274
6275	/* Reset the projection matrix as that relies on the viewport setting. */
6276	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6277	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION,
6278	pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6279	else
6280	{
6281	float matrix[16];
6282
6283	/* identity matrix if no matrix set. */
6284	memset(matrix, 0, sizeof(matrix));
6285	matrix[0] = 1.0;
6286	matrix[5] = 1.0;
6287	matrix[10] = 1.0;
6288	matrix[15] = 1.0;
6289	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
6290	}
6291
6292	return VINF_SUCCESS;
6293	}
6294
6295	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4])
6296	{
6297	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6298	AssertReturn(pState, VERR_NO_MEMORY);
6299	double oglPlane[4];
6300
6301	Log(("vmsvga3dSetClipPlane cid=%u %d (%d,%d)(%d,%d)\n", cid, index, (unsigned)(plane[0] * 100.0), (unsigned)(plane[1] * 100.0), (unsigned)(plane[2] * 100.0), (unsigned)(plane[3] * 100.0)));
6302	AssertReturn(index < SVGA3D_NUM_CLIPPLANES, VERR_INVALID_PARAMETER);
6303
6304	PVMSVGA3DCONTEXT pContext;
6305	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6306	AssertRCReturn(rc, rc);
6307
6308	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6309
6310	/* Store for vm state save/restore. */
6311	pContext->state.aClipPlane[index].fValid = true;
6312	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
6313
6314	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
6315	oglPlane[0] = (double)plane[0];
6316	oglPlane[1] = (double)plane[1];
6317	oglPlane[2] = (double)plane[2];
6318	oglPlane[3] = (double)plane[3];
6319
6320	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
6321	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6322
6323	return VINF_SUCCESS;
6324	}
6325
6326	static DECLCALLBACK(int) vmsvga3dBackSetScissorRect(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6327	{
6328	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6329	AssertReturn(pState, VERR_NO_MEMORY);
6330
6331	Log(("vmsvga3dSetScissorRect cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6332
6333	PVMSVGA3DCONTEXT pContext;
6334	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6335	AssertRCReturn(rc, rc);
6336
6337	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6338
6339	/* Store for vm state save/restore. */
6340	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
6341	pContext->state.RectScissor = *pRect;
6342
6343	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
6344	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6345
6346	return VINF_SUCCESS;
6347	}
6348
6349	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
6350	{
6351	/* Convert byte color components to float (0-1.0) */
6352	*pAlpha = (GLfloat)(color >> 24) / 255.0;
6353	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
6354	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
6355	*pBlue = (GLfloat)(color & 0xff) / 255.0;
6356	}
6357
6358	static DECLCALLBACK(int) vmsvga3dBackCommandClear(PVGASTATECC pThisCC, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
6359	uint32_t cRects, SVGA3dRect *pRect)
6360	{
6361	GLbitfield mask = 0;
6362	GLbitfield restoreMask = 0;
6363	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6364	AssertReturn(pState, VERR_NO_MEMORY);
6365	GLboolean fDepthWriteEnabled = GL_FALSE;
6366	GLboolean afColorWriteEnabled[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
6367
6368	Log(("vmsvga3dCommandClear cid=%u clearFlag=%x color=%x depth=%d stencil=%x cRects=%d\n", cid, clearFlag, color, (uint32_t)(depth * 100.0), stencil, cRects));
6369
6370	PVMSVGA3DCONTEXT pContext;
6371	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6372	AssertRCReturn(rc, rc);
6373
6374	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6375
6376	if (clearFlag & SVGA3D_CLEAR_COLOR)
6377	{
6378	GLfloat red, green, blue, alpha;
6379	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
6380
6381	/* Set the color clear value. */
6382	glClearColor(red, green, blue, alpha);
6383	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6384
6385	mask \|= GL_COLOR_BUFFER_BIT;
6386
6387	/* glClear will not clear the color buffer if writing is disabled. */
6388	glGetBooleanv(GL_COLOR_WRITEMASK, afColorWriteEnabled);
6389	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6390	if ( afColorWriteEnabled[0] == GL_FALSE
6391	\|\| afColorWriteEnabled[1] == GL_FALSE
6392	\|\| afColorWriteEnabled[2] == GL_FALSE
6393	\|\| afColorWriteEnabled[3] == GL_FALSE)
6394	{
6395	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
6396	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6397
6398	restoreMask \|= GL_COLOR_BUFFER_BIT;
6399	}
6400
6401	}
6402
6403	if (clearFlag & SVGA3D_CLEAR_STENCIL)
6404	{
6405	/** @todo possibly the same problem as with glDepthMask */
6406	glClearStencil(stencil);
6407	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6408
6409	mask \|= GL_STENCIL_BUFFER_BIT;
6410	}
6411
6412	if (clearFlag & SVGA3D_CLEAR_DEPTH)
6413	{
6414	glClearDepth((GLdouble)depth);
6415	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6416
6417	mask \|= GL_DEPTH_BUFFER_BIT;
6418
6419	/* glClear will not clear the depth buffer if writing is disabled. */
6420	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
6421	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6422	if (fDepthWriteEnabled == GL_FALSE)
6423	{
6424	glDepthMask(GL_TRUE);
6425	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6426
6427	restoreMask \|= GL_DEPTH_BUFFER_BIT;
6428	}
6429	}
6430
6431	/* Save the current scissor test bit and scissor box. */
6432	glPushAttrib(GL_SCISSOR_BIT);
6433	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6434
6435	if (cRects)
6436	{
6437	glEnable(GL_SCISSOR_TEST);
6438	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6439
6440	for (uint32_t i = 0; i < cRects; ++i)
6441	{
6442	LogFunc(("rect [%d] %d,%d %dx%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h));
6443	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
6444	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6445
6446	glClear(mask);
6447	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6448	}
6449	}
6450	else
6451	{
6452	glDisable(GL_SCISSOR_TEST);
6453	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6454
6455	glClear(mask);
6456	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6457	}
6458
6459	/* Restore the old scissor test bit and box */
6460	glPopAttrib();
6461	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6462
6463	/* Restore the write states. */
6464	if (restoreMask & GL_COLOR_BUFFER_BIT)
6465	{
6466	glColorMask(afColorWriteEnabled[0],
6467	afColorWriteEnabled[1],
6468	afColorWriteEnabled[2],
6469	afColorWriteEnabled[3]);
6470	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6471	}
6472
6473	if (restoreMask & GL_DEPTH_BUFFER_BIT)
6474	{
6475	glDepthMask(fDepthWriteEnabled);
6476	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6477	}
6478
6479	return VINF_SUCCESS;
6480	}
6481
6482	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
6483	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized, uint32_t &cbAttrib)
6484	{
6485	normalized = GL_FALSE;
6486	switch (identity.type)
6487	{
6488	case SVGA3D_DECLTYPE_FLOAT1:
6489	size = 1;
6490	type = GL_FLOAT;
6491	cbAttrib = sizeof(float);
6492	break;
6493	case SVGA3D_DECLTYPE_FLOAT2:
6494	size = 2;
6495	type = GL_FLOAT;
6496	cbAttrib = 2 * sizeof(float);
6497	break;
6498	case SVGA3D_DECLTYPE_FLOAT3:
6499	size = 3;
6500	type = GL_FLOAT;
6501	cbAttrib = 3 * sizeof(float);
6502	break;
6503	case SVGA3D_DECLTYPE_FLOAT4:
6504	size = 4;
6505	type = GL_FLOAT;
6506	cbAttrib = 4 * sizeof(float);
6507	break;
6508
6509	case SVGA3D_DECLTYPE_D3DCOLOR:
6510	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6511	type = GL_UNSIGNED_BYTE;
6512	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6513	cbAttrib = sizeof(uint32_t);
6514	break;
6515
6516	case SVGA3D_DECLTYPE_UBYTE4N:
6517	normalized = GL_TRUE;
6518	RT_FALL_THRU();
6519	case SVGA3D_DECLTYPE_UBYTE4:
6520	size = 4;
6521	type = GL_UNSIGNED_BYTE;
6522	cbAttrib = sizeof(uint32_t);
6523	break;
6524
6525	case SVGA3D_DECLTYPE_SHORT2N:
6526	normalized = GL_TRUE;
6527	RT_FALL_THRU();
6528	case SVGA3D_DECLTYPE_SHORT2:
6529	size = 2;
6530	type = GL_SHORT;
6531	cbAttrib = 2 * sizeof(uint16_t);
6532	break;
6533
6534	case SVGA3D_DECLTYPE_SHORT4N:
6535	normalized = GL_TRUE;
6536	RT_FALL_THRU();
6537	case SVGA3D_DECLTYPE_SHORT4:
6538	size = 4;
6539	type = GL_SHORT;
6540	cbAttrib = 4 * sizeof(uint16_t);
6541	break;
6542
6543	case SVGA3D_DECLTYPE_USHORT4N:
6544	normalized = GL_TRUE;
6545	size = 4;
6546	type = GL_UNSIGNED_SHORT;
6547	cbAttrib = 4 * sizeof(uint16_t);
6548	break;
6549
6550	case SVGA3D_DECLTYPE_USHORT2N:
6551	normalized = GL_TRUE;
6552	size = 2;
6553	type = GL_UNSIGNED_SHORT;
6554	cbAttrib = 2 * sizeof(uint16_t);
6555	break;
6556
6557	case SVGA3D_DECLTYPE_UDEC3:
6558	size = 3;
6559	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6560	cbAttrib = sizeof(uint32_t);
6561	break;
6562
6563	case SVGA3D_DECLTYPE_DEC3N:
6564	normalized = true;
6565	size = 3;
6566	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6567	cbAttrib = sizeof(uint32_t);
6568	break;
6569
6570	case SVGA3D_DECLTYPE_FLOAT16_2:
6571	size = 2;
6572	type = GL_HALF_FLOAT;
6573	cbAttrib = 2 * sizeof(uint16_t);
6574	break;
6575	case SVGA3D_DECLTYPE_FLOAT16_4:
6576	size = 4;
6577	type = GL_HALF_FLOAT;
6578	cbAttrib = 4 * sizeof(uint16_t);
6579	break;
6580	default:
6581	AssertFailedReturn(VERR_INVALID_PARAMETER);
6582	}
6583
6584	//pVertexElement->Method = identity.method;
6585	//pVertexElement->Usage = identity.usage;
6586
6587	return VINF_SUCCESS;
6588	}
6589
6590	static float vmsvga3dFloat16To32(uint16_t f16)
6591	{
6592	/* From Wiki */
6593	#ifndef INFINITY
6594	static uint32_t const sBitsINFINITY = UINT32_C(0x7f800000);
6595	#define INFINITY ((float const )&sBitsINFINITY)
6596	#endif
6597	#ifndef NAN
6598	static uint32_t const sBitsNAN = UINT32_C(0x7fc00000);
6599	#define NAN ((float const )&sBitsNAN)
6600	#endif
6601
6602	uint16_t const s = (f16 >> UINT16_C(15)) & UINT16_C(0x1);
6603	uint16_t const e = (f16 >> UINT16_C(10)) & UINT16_C(0x1f);
6604	uint16_t const m = (f16 ) & UINT16_C(0x3ff);
6605
6606	float result = s ? 1.0f : -1.0f;
6607	if (e == 0)
6608	{
6609	if (m == 0)
6610	result = 0.0f; / zero, -0 */
6611	else
6612	result = (float)m / 1024.0f / 16384.0f; / subnormal numbers: sign * 2^-14 * 0.m */
6613	}
6614	else if (e == 0x1f)
6615	{
6616	if (m == 0)
6617	result = INFINITY; / +-infinity */
6618	else
6619	result = NAN; /* NAN */
6620	}
6621	else
6622	{
6623	result = powf(2.0f, (float)e - 15.0f) (1.0f + (float)m / 1024.0f); /* sign * 2^(e-15) * 1.m */
6624	}
6625
6626	return result;
6627	}
6628
6629	/* Set a vertex attribute according to VMSVGA vertex declaration. */
6630	static int vmsvga3dSetVertexAttrib(PVMSVGA3DSTATE pState, GLuint index, SVGA3dVertexArrayIdentity const pIdentity, GLvoid const pv)
6631	{
6632	switch (pIdentity->type)
6633	{
6634	case SVGA3D_DECLTYPE_FLOAT1:
6635	{
6636	/* "One-component float expanded to (float, 0, 0, 1)." */
6637	GLfloat const p = (GLfloat )pv;
6638	GLfloat const v[4] = { p[0], 0.0f, 0.0f, 1.0f };
6639	pState->ext.glVertexAttrib4fv(index, v);
6640	break;
6641	}
6642	case SVGA3D_DECLTYPE_FLOAT2:
6643	{
6644	/* "Two-component float expanded to (float, float, 0, 1)." */
6645	GLfloat const p = (GLfloat )pv;
6646	GLfloat const v[4] = { p[0], p[1], 0.0f, 1.0f };
6647	pState->ext.glVertexAttrib4fv(index, v);
6648	break;
6649	}
6650	case SVGA3D_DECLTYPE_FLOAT3:
6651	{
6652	/* "Three-component float expanded to (float, float, float, 1)." */
6653	GLfloat const p = (GLfloat )pv;
6654	GLfloat const v[4] = { p[0], p[1], p[2], 1.0f };
6655	pState->ext.glVertexAttrib4fv(index, v);
6656	break;
6657	}
6658	case SVGA3D_DECLTYPE_FLOAT4:
6659	pState->ext.glVertexAttrib4fv(index, (GLfloat const *)pv);
6660	break;
6661	case SVGA3D_DECLTYPE_D3DCOLOR:
6662	/** @todo Need to swap bytes? */
6663	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6664	break;
6665	case SVGA3D_DECLTYPE_UBYTE4:
6666	pState->ext.glVertexAttrib4ubv(index, (GLubyte const *)pv);
6667	break;
6668	case SVGA3D_DECLTYPE_SHORT2:
6669	{
6670	/* "Two-component, signed short expanded to (value, value, 0, 1)." */
6671	GLshort const p = (GLshort const )pv;
6672	GLshort const v[4] = { p[0], p[1], 0, 1 };
6673	pState->ext.glVertexAttrib4sv(index, v);
6674	break;
6675	}
6676	case SVGA3D_DECLTYPE_SHORT4:
6677	pState->ext.glVertexAttrib4sv(index, (GLshort const *)pv);
6678	break;
6679	case SVGA3D_DECLTYPE_UBYTE4N:
6680	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6681	break;
6682	case SVGA3D_DECLTYPE_SHORT2N:
6683	{
6684	/* "Normalized, two-component, signed short, expanded to (first short/32767.0, second short/32767.0, 0, 1)." */
6685	GLshort const p = (GLshort const )pv;
6686	GLshort const v[4] = { p[0], p[1], 0, 1 };
6687	pState->ext.glVertexAttrib4Nsv(index, v);
6688	break;
6689	}
6690	case SVGA3D_DECLTYPE_SHORT4N:
6691	pState->ext.glVertexAttrib4Nsv(index, (GLshort const *)pv);
6692	break;
6693	case SVGA3D_DECLTYPE_USHORT2N:
6694	{
6695	GLushort const p = (GLushort const )pv;
6696	GLushort const v[4] = { p[0], p[1], 0, 1 };
6697	pState->ext.glVertexAttrib4Nusv(index, v);
6698	break;
6699	}
6700	case SVGA3D_DECLTYPE_USHORT4N:
6701	pState->ext.glVertexAttrib4Nusv(index, (GLushort const *)pv);
6702	break;
6703	case SVGA3D_DECLTYPE_UDEC3:
6704	{
6705	/** @todo Test */
6706	/* "Three-component, unsigned, 10 10 10 format expanded to (value, value, value, 1)." */
6707	uint32_t const u32 = (uint32_t )pv;
6708	GLfloat const v[4] = { (float)(u32 & 0x3ff), (float)((u32 >> 10) & 0x3ff), (float)((u32 >> 20) & 0x3ff), 1.0f };
6709	pState->ext.glVertexAttrib4fv(index, v);
6710	break;
6711	}
6712	case SVGA3D_DECLTYPE_DEC3N:
6713	{
6714	/** @todo Test */
6715	/* "Three-component, signed, 10 10 10 format normalized and expanded to (v[0]/511.0, v[1]/511.0, v[2]/511.0, 1)." */
6716	uint32_t const u32 = (uint32_t )pv;
6717	GLfloat const v[4] = { (u32 & 0x3ff) / 511.0f, ((u32 >> 10) & 0x3ff) / 511.0f, ((u32 >> 20) & 0x3ff) / 511.0f, 1.0f };
6718	pState->ext.glVertexAttrib4fv(index, v);
6719	break;
6720	}
6721	case SVGA3D_DECLTYPE_FLOAT16_2:
6722	{
6723	/** @todo Test */
6724	/* "Two-component, 16-bit, floating point expanded to (value, value, 0, 1)." */
6725	uint16_t const p = (uint16_t )pv;
6726	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]), 0.0f, 1.0f };
6727	pState->ext.glVertexAttrib4fv(index, v);
6728	break;
6729	}
6730	case SVGA3D_DECLTYPE_FLOAT16_4:
6731	{
6732	/** @todo Test */
6733	uint16_t const p = (uint16_t )pv;
6734	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]),
6735	vmsvga3dFloat16To32(p[2]), vmsvga3dFloat16To32(p[3]) };
6736	pState->ext.glVertexAttrib4fv(index, v);
6737	break;
6738	}
6739	default:
6740	AssertFailedReturn(VERR_INVALID_PARAMETER);
6741	}
6742
6743	return VINF_SUCCESS;
6744	}
6745
6746	/* Convert VMWare primitive type to its OpenGL equivalent. */
6747	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6748	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6749	{
6750	switch (PrimitiveType)
6751	{
6752	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6753	*pMode = GL_TRIANGLES;
6754	pcVertices = cPrimitiveCount 3;
6755	break;
6756	case SVGA3D_PRIMITIVE_POINTLIST:
6757	*pMode = GL_POINTS;
6758	*pcVertices = cPrimitiveCount;
6759	break;
6760	case SVGA3D_PRIMITIVE_LINELIST:
6761	*pMode = GL_LINES;
6762	pcVertices = cPrimitiveCount 2;
6763	break;
6764	case SVGA3D_PRIMITIVE_LINESTRIP:
6765	*pMode = GL_LINE_STRIP;
6766	*pcVertices = cPrimitiveCount + 1;
6767	break;
6768	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6769	*pMode = GL_TRIANGLE_STRIP;
6770	*pcVertices = cPrimitiveCount + 2;
6771	break;
6772	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6773	*pMode = GL_TRIANGLE_FAN;
6774	*pcVertices = cPrimitiveCount + 2;
6775	break;
6776	default:
6777	return VERR_INVALID_PARAMETER;
6778	}
6779	return VINF_SUCCESS;
6780	}
6781
6782	static int vmsvga3dResetTransformMatrices(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
6783	{
6784	int rc;
6785
6786	/* Reset the view matrix (also takes the world matrix into account). */
6787	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6788	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW,
6789	pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6790	else
6791	{
6792	float matrix[16];
6793
6794	/* identity matrix if no matrix set. */
6795	memset(matrix, 0, sizeof(matrix));
6796	matrix[0] = 1.0;
6797	matrix[5] = 1.0;
6798	matrix[10] = 1.0;
6799	matrix[15] = 1.0;
6800	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6801	}
6802
6803	/* Reset the projection matrix. */
6804	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6805	{
6806	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6807	}
6808	else
6809	{
6810	float matrix[16];
6811
6812	/* identity matrix if no matrix set. */
6813	memset(matrix, 0, sizeof(matrix));
6814	matrix[0] = 1.0;
6815	matrix[5] = 1.0;
6816	matrix[10] = 1.0;
6817	matrix[15] = 1.0;
6818	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6819	}
6820	AssertRC(rc);
6821	return rc;
6822	}
6823
6824	static int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext,
6825	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6826	SVGA3dVertexDecl *pVertexDecl,
6827	SVGA3dVertexDivisor const *paVertexDivisors)
6828	{
6829	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6830	unsigned const sidVertex = pVertexDecl[0].array.surfaceId;
6831
6832	PVMSVGA3DSURFACE pVertexSurface;
6833	int rc = vmsvga3dSurfaceFromSid(pState, sidVertex, &pVertexSurface);
6834	AssertRCReturn(rc, rc);
6835
6836	Log(("vmsvga3dDrawPrimitives: vertex surface sid=%u\n", sidVertex));
6837
6838	/* Create and/or bind the vertex buffer. */
6839	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6840	{
6841	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->paMipmapLevels[0].cbSurface));
6842	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6843	pContext = &pState->SharedCtx;
6844	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6845
6846	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6847	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6848	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6849
6850	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6851	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6852
6853	Assert(pVertexSurface->fDirty);
6854	/** @todo rethink usage dynamic/static */
6855	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->paMipmapLevels[0].cbSurface, pVertexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6856	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6857
6858	pVertexSurface->paMipmapLevels[0].fDirty = false;
6859	pVertexSurface->fDirty = false;
6860
6861	pVertexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6862
6863	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6864	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6865
6866	pContext = pSavedCtx;
6867	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6868	}
6869
6870	Assert(pVertexSurface->fDirty == false);
6871	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6872	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6873
6874	/* Setup the vertex declarations. */
6875	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6876	{
6877	GLint size;
6878	GLenum type;
6879	GLboolean normalized;
6880	uint32_t cbAttrib;
6881	GLuint index = iVertexDeclBase + iVertex;
6882
6883	Log(("vmsvga3dDrawPrimitives: array index %d type=%s (%d) method=%s (%d) usage=%s (%d) usageIndex=%d stride=%d offset=%d\n", index, vmsvgaDeclType2String(pVertexDecl[iVertex].identity.type), pVertexDecl[iVertex].identity.type, vmsvgaDeclMethod2String(pVertexDecl[iVertex].identity.method), pVertexDecl[iVertex].identity.method, vmsvgaDeclUsage2String(pVertexDecl[iVertex].identity.usage), pVertexDecl[iVertex].identity.usage, pVertexDecl[iVertex].identity.usageIndex, pVertexDecl[iVertex].array.stride, pVertexDecl[iVertex].array.offset));
6884
6885	rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized, cbAttrib);
6886	AssertRCReturn(rc, rc);
6887
6888	ASSERT_GUEST_RETURN( pVertexSurface->paMipmapLevels[0].cbSurface >= pVertexDecl[iVertex].array.offset
6889	&& pVertexSurface->paMipmapLevels[0].cbSurface - pVertexDecl[iVertex].array.offset >= cbAttrib,
6890	VERR_INVALID_PARAMETER);
6891	RT_UNTRUSTED_VALIDATED_FENCE();
6892
6893	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6894	{
6895	/* Use numbered vertex arrays (or attributes) when shaders are active. */
6896	if (pVertexDecl[iVertex].array.stride)
6897	{
6898	pState->ext.glEnableVertexAttribArray(index);
6899	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6900	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6901	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6902	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6903
6904	GLuint divisor = paVertexDivisors && paVertexDivisors[index].instanceData ? 1 : 0;
6905	pState->ext.glVertexAttribDivisor(index, divisor);
6906	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6907
6908	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6909	}
6910	else
6911	{
6912	/*
6913	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6914	* - D3D (VMSVGA): "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6915	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6916	* VMSVGA uses the D3D semantics.
6917	*
6918	* Use glVertexAttrib in order to tell OpenGL to reuse the zero stride attributes for each vertex.
6919	*/
6920	pState->ext.glDisableVertexAttribArray(index);
6921	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6922
6923	const GLvoid v = (uint8_t )pVertexSurface->paMipmapLevels[0].pSurfaceData + pVertexDecl[iVertex].array.offset;
6924	vmsvga3dSetVertexAttrib(pState, index, &pVertexDecl[iVertex].identity, v);
6925	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6926	}
6927	}
6928	else
6929	{
6930	if (pVertexDecl[iVertex].array.stride == 0)
6931	{
6932	/* Zero stride means that the attribute pointer must not be increased.
6933	* See comment about stride in vmsvga3dDrawPrimitives.
6934	*/
6935	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
6936	AssertFailed();
6937	}
6938
6939	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6940	switch (pVertexDecl[iVertex].identity.usage)
6941	{
6942	case SVGA3D_DECLUSAGE_POSITIONT:
6943	case SVGA3D_DECLUSAGE_POSITION:
6944	{
6945	glEnableClientState(GL_VERTEX_ARRAY);
6946	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6947	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6948	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6949	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6950	break;
6951	}
6952	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6953	AssertFailed();
6954	break;
6955	case SVGA3D_DECLUSAGE_BLENDINDICES:
6956	AssertFailed();
6957	break;
6958	case SVGA3D_DECLUSAGE_NORMAL:
6959	glEnableClientState(GL_NORMAL_ARRAY);
6960	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6961	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6962	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6963	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6964	break;
6965	case SVGA3D_DECLUSAGE_PSIZE:
6966	AssertFailed();
6967	break;
6968	case SVGA3D_DECLUSAGE_TEXCOORD:
6969	/* Specify the affected texture unit. */
6970	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6971	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6972	#else
6973	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6974	#endif
6975	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6976	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6977	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6978	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6979	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6980	break;
6981	case SVGA3D_DECLUSAGE_TANGENT:
6982	AssertFailed();
6983	break;
6984	case SVGA3D_DECLUSAGE_BINORMAL:
6985	AssertFailed();
6986	break;
6987	case SVGA3D_DECLUSAGE_TESSFACTOR:
6988	AssertFailed();
6989	break;
6990	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6991	glEnableClientState(GL_COLOR_ARRAY);
6992	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6993	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6994	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6995	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6996	break;
6997	case SVGA3D_DECLUSAGE_FOG:
6998	glEnableClientState(GL_FOG_COORD_ARRAY);
6999	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7000	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
7001	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
7002	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7003	break;
7004	case SVGA3D_DECLUSAGE_DEPTH:
7005	AssertFailed();
7006	break;
7007	case SVGA3D_DECLUSAGE_SAMPLE:
7008	AssertFailed();
7009	break;
7010	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7011	}
7012	}
7013
7014	#ifdef LOG_ENABLED
7015	if (pVertexDecl[iVertex].array.stride == 0)
7016	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
7017	#endif
7018	}
7019
7020	return VINF_SUCCESS;
7021	}
7022
7023	static int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase,
7024	uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
7025	{
7026	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7027
7028	/* Clean up the vertex declarations. */
7029	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7030	{
7031	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
7032	{
7033	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
7034	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
7035	vmsvga3dResetTransformMatrices(pThisCC, pContext);
7036	}
7037
7038	if (pContext->state.shidVertex != SVGA_ID_INVALID)
7039	{
7040	/* Use numbered vertex arrays when shaders are active. */
7041	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
7042	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7043	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
7044	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7045	}
7046	else
7047	{
7048	/* Use the predefined selection of vertex streams for the fixed pipeline. */
7049	switch (pVertexDecl[iVertex].identity.usage)
7050	{
7051	case SVGA3D_DECLUSAGE_POSITION:
7052	case SVGA3D_DECLUSAGE_POSITIONT:
7053	glDisableClientState(GL_VERTEX_ARRAY);
7054	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7055	break;
7056	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
7057	break;
7058	case SVGA3D_DECLUSAGE_BLENDINDICES:
7059	break;
7060	case SVGA3D_DECLUSAGE_NORMAL:
7061	glDisableClientState(GL_NORMAL_ARRAY);
7062	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7063	break;
7064	case SVGA3D_DECLUSAGE_PSIZE:
7065	break;
7066	case SVGA3D_DECLUSAGE_TEXCOORD:
7067	/* Specify the affected texture unit. */
7068	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
7069	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7070	#else
7071	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7072	#endif
7073	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
7074	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7075	break;
7076	case SVGA3D_DECLUSAGE_TANGENT:
7077	break;
7078	case SVGA3D_DECLUSAGE_BINORMAL:
7079	break;
7080	case SVGA3D_DECLUSAGE_TESSFACTOR:
7081	break;
7082	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
7083	glDisableClientState(GL_COLOR_ARRAY);
7084	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7085	break;
7086	case SVGA3D_DECLUSAGE_FOG:
7087	glDisableClientState(GL_FOG_COORD_ARRAY);
7088	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7089	break;
7090	case SVGA3D_DECLUSAGE_DEPTH:
7091	break;
7092	case SVGA3D_DECLUSAGE_SAMPLE:
7093	break;
7094	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7095	}
7096	}
7097	}
7098	/* Unbind the vertex buffer after usage. */
7099	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7100	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7101	return VINF_SUCCESS;
7102	}
7103
7104	static DECLCALLBACK(int) vmsvga3dBackDrawPrimitives(PVGASTATECC pThisCC, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
7105	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
7106	SVGA3dVertexDivisor *pVertexDivisor)
7107	{
7108	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7109	AssertReturn(pState, VERR_INTERNAL_ERROR);
7110	uint32_t iCurrentVertex;
7111
7112	Log(("vmsvga3dDrawPrimitives cid=%u numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
7113
7114	/* Caller already check these, but it cannot hurt to check again... */
7115	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
7116	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
7117	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
7118
7119	if (!cVertexDivisor)
7120	pVertexDivisor = NULL; /* Be sure. */
7121
7122	PVMSVGA3DCONTEXT pContext;
7123	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7124	AssertRCReturn(rc, rc);
7125
7126	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7127
7128	/* Check for pretransformed vertex declarations. */
7129	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7130	{
7131	switch (pVertexDecl[iVertex].identity.usage)
7132	{
7133	case SVGA3D_DECLUSAGE_POSITIONT:
7134	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
7135	RT_FALL_THRU();
7136	case SVGA3D_DECLUSAGE_POSITION:
7137	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
7138	pContext->state.RectViewPort.h,
7139	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
7140	break;
7141	default: /* Shut up MSC. */ break;
7142	}
7143	}
7144
7145	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
7146	if (pContext->pShaderContext)
7147	{
7148	uint32_t rtHeight = 0;
7149
7150	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
7151	{
7152	PVMSVGA3DSURFACE pRenderTarget;
7153	rc = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pRenderTarget);
7154	AssertRCReturn(rc, rc);
7155
7156	rtHeight = pRenderTarget->paMipmapLevels[0].mipmapSize.height;
7157	}
7158
7159	ShaderUpdateState(pContext->pShaderContext, rtHeight);
7160	}
7161
7162	/* Try to figure out if instancing is used.
7163	* Support simple instancing case with one set of indexed data and one set per-instance data.
7164	*/
7165	uint32_t cInstances = 0;
7166	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
7167	{
7168	if (pVertexDivisor[iVertexDivisor].indexedData)
7169	{
7170	if (cInstances == 0)
7171	cInstances = pVertexDivisor[iVertexDivisor].count;
7172	else
7173	Assert(cInstances == pVertexDivisor[iVertexDivisor].count);
7174	}
7175	else if (pVertexDivisor[iVertexDivisor].instanceData)
7176	{
7177	Assert(pVertexDivisor[iVertexDivisor].count == 1);
7178	}
7179	}
7180
7181	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
7182	iCurrentVertex = 0;
7183	while (iCurrentVertex < numVertexDecls)
7184	{
7185	uint32_t sidVertex = SVGA_ID_INVALID;
7186	uint32_t iVertex;
7187
7188	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7189	{
7190	if ( sidVertex != SVGA_ID_INVALID
7191	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7192	)
7193	break;
7194	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7195	}
7196
7197	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThisCC, pContext, iCurrentVertex, iVertex - iCurrentVertex,
7198	&pVertexDecl[iCurrentVertex], pVertexDivisor);
7199	AssertRCReturn(rc, rc);
7200
7201	iCurrentVertex = iVertex;
7202	}
7203
7204	/* Now draw the primitives. */
7205	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
7206	{
7207	GLenum modeDraw;
7208	unsigned const sidIndex = pRange[iPrimitive].indexArray.surfaceId;
7209	PVMSVGA3DSURFACE pIndexSurface = NULL;
7210	unsigned cVertices;
7211
7212	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
7213	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
7214	if (RT_FAILURE(rc))
7215	{
7216	AssertRC(rc);
7217	goto internal_error;
7218	}
7219
7220	if (sidIndex != SVGA3D_INVALID_ID)
7221	{
7222	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
7223
7224	rc = vmsvga3dSurfaceFromSid(pState, sidIndex, &pIndexSurface);
7225	if (RT_FAILURE(rc))
7226	{
7227	AssertRC(rc);
7228	goto internal_error;
7229	}
7230
7231	Log(("vmsvga3dDrawPrimitives: index surface sid=%u\n", sidIndex));
7232
7233	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
7234	{
7235	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->paMipmapLevels[0].cbSurface));
7236	pContext = &pState->SharedCtx;
7237	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7238
7239	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
7240	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7241	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
7242
7243	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7244	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7245
7246	Assert(pIndexSurface->fDirty);
7247
7248	/** @todo rethink usage dynamic/static */
7249	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->paMipmapLevels[0].cbSurface, pIndexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
7250	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7251
7252	pIndexSurface->paMipmapLevels[0].fDirty = false;
7253	pIndexSurface->fDirty = false;
7254
7255	pIndexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
7256
7257	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
7258	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7259
7260	pContext = pState->papContexts[cid];
7261	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7262	}
7263	Assert(pIndexSurface->fDirty == false);
7264
7265	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7266	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7267	}
7268
7269	if (!pIndexSurface)
7270	{
7271	/* Render without an index buffer */
7272	Log(("DrawPrimitive %d cPrimitives=%d cVertices=%d index index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias, cInstances));
7273	if (cInstances == 0)
7274	{
7275	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
7276	}
7277	else
7278	{
7279	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
7280	}
7281	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7282	}
7283	else
7284	{
7285	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
7286
7287	GLenum indexType;
7288	switch (pRange[iPrimitive].indexWidth)
7289	{
7290	case 1: indexType = GL_UNSIGNED_BYTE; break;
7291	case 2: indexType = GL_UNSIGNED_SHORT; break;
7292	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
7293	RT_FALL_THROUGH();
7294	case 4: indexType = GL_UNSIGNED_INT; break;
7295	}
7296
7297	Log(("DrawIndexedPrimitive %d cPrimitives=%d cVertices=%d hint.first=%d hint.last=%d index offset=%d primitivecount=%d index width=%d index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pVertexDecl[0].rangeHint.first, pVertexDecl[0].rangeHint.last, pRange[iPrimitive].indexArray.offset, pRange[iPrimitive].primitiveCount, pRange[iPrimitive].indexWidth, pRange[iPrimitive].indexBias, cInstances));
7298	if (cInstances == 0)
7299	{
7300	/* Render with an index buffer */
7301	if (pRange[iPrimitive].indexBias == 0)
7302	glDrawElements(modeDraw,
7303	cVertices,
7304	indexType,
7305	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
7306	else
7307	pState->ext.glDrawElementsBaseVertex(modeDraw,
7308	cVertices,
7309	indexType,
7310	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7311	pRange[iPrimitive].indexBias); /* basevertex */
7312	}
7313	else
7314	{
7315	/* Render with an index buffer */
7316	if (pRange[iPrimitive].indexBias == 0)
7317	pState->ext.glDrawElementsInstanced(modeDraw,
7318	cVertices,
7319	indexType,
7320	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7321	cInstances);
7322	else
7323	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
7324	cVertices,
7325	indexType,
7326	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7327	cInstances,
7328	pRange[iPrimitive].indexBias); /* basevertex */
7329	}
7330	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7331
7332	/* Unbind the index buffer after usage. */
7333	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
7334	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7335	}
7336	}
7337
7338	internal_error:
7339
7340	/* Deactivate the vertex declarations. */
7341	iCurrentVertex = 0;
7342	while (iCurrentVertex < numVertexDecls)
7343	{
7344	uint32_t sidVertex = SVGA_ID_INVALID;
7345	uint32_t iVertex;
7346
7347	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7348	{
7349	if ( sidVertex != SVGA_ID_INVALID
7350	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7351	)
7352	break;
7353	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7354	}
7355
7356	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThisCC, pContext, iCurrentVertex,
7357	iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
7358	AssertRCReturn(rc, rc);
7359
7360	iCurrentVertex = iVertex;
7361	}
7362
7363	#ifdef DEBUG
7364	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
7365	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
7366	{
7367	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
7368	{
7369	PVMSVGA3DSURFACE pTexture;
7370	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
7371	AssertContinue(RT_SUCCESS(rc2));
7372
7373	GLint activeTextureUnit = 0;
7374	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
7375	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7376
7377	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
7378	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7379
7380	GLint activeTexture = 0;
7381	glGetIntegerv(pTexture->bindingGL, &activeTexture);
7382	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7383
7384	pState->ext.glActiveTexture(activeTextureUnit);
7385	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7386
7387	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
7388	("%d vs %d unit %d (active unit %d) sid=%u\n", pTexture->oglId.texture, activeTexture, i,
7389	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
7390	}
7391	}
7392	#endif
7393
7394	#if 0
7395	/* Dump render target to a bitmap. */
7396	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
7397	{
7398	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
7399	PVMSVGA3DSURFACE pSurface;
7400	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
7401	if (RT_SUCCESS(rc2))
7402	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post");
7403	# if 0
7404	/* Stage 0 texture. */
7405	if (pContext->aSidActiveTextures[0] != SVGA3D_INVALID_ID)
7406	{
7407	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->aSidActiveTextures[0]);
7408	rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[0], &pSurface);
7409	if (RT_SUCCESS(rc2))
7410	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post-tx");
7411	}
7412	# endif
7413	}
7414	#endif
7415
7416	return rc;
7417	}
7418
7419
7420	static DECLCALLBACK(int) vmsvga3dBackShaderDefine(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
7421	{
7422	PVMSVGA3DSHADER pShader;
7423	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7424	AssertReturn(pState, VERR_NO_MEMORY);
7425
7426	Log(("vmsvga3dShaderDefine cid=%u shid=%d type=%s cbData=0x%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
7427
7428	PVMSVGA3DCONTEXT pContext;
7429	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7430	AssertRCReturn(rc, rc);
7431
7432	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
7433
7434	rc = vmsvga3dShaderParse(type, cbData, pShaderData);
7435	if (RT_FAILURE(rc))
7436	{
7437	AssertRC(rc);
7438	vmsvga3dShaderLogRel("Failed to parse", type, cbData, pShaderData);
7439	return rc;
7440	}
7441
7442	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7443
7444	if (type == SVGA3D_SHADERTYPE_VS)
7445	{
7446	if (shid >= pContext->cVertexShaders)
7447	{
7448	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7449	AssertReturn(pvNew, VERR_NO_MEMORY);
7450	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
7451	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
7452	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
7453	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
7454	pContext->cVertexShaders = shid + 1;
7455	}
7456	/* If one already exists with this id, then destroy it now. */
7457	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
7458	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paVertexShader[shid].type);
7459
7460	pShader = &pContext->paVertexShader[shid];
7461	}
7462	else
7463	{
7464	Assert(type == SVGA3D_SHADERTYPE_PS);
7465	if (shid >= pContext->cPixelShaders)
7466	{
7467	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7468	AssertReturn(pvNew, VERR_NO_MEMORY);
7469	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
7470	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
7471	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
7472	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
7473	pContext->cPixelShaders = shid + 1;
7474	}
7475	/* If one already exists with this id, then destroy it now. */
7476	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
7477	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paPixelShader[shid].type);
7478
7479	pShader = &pContext->paPixelShader[shid];
7480	}
7481
7482	memset(pShader, 0, sizeof(*pShader));
7483	pShader->id = shid;
7484	pShader->cid = cid;
7485	pShader->type = type;
7486	pShader->cbData = cbData;
7487	pShader->pShaderProgram = RTMemAllocZ(cbData);
7488	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
7489	memcpy(pShader->pShaderProgram, pShaderData, cbData);
7490
7491	#ifdef DUMP_SHADER_DISASSEMBLY
7492	LPD3DXBUFFER pDisassembly;
7493	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
7494	if (hr == D3D_OK)
7495	{
7496	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
7497	pDisassembly->Release();
7498	}
7499	#endif
7500
7501	switch (type)
7502	{
7503	case SVGA3D_SHADERTYPE_VS:
7504	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pVertexShader);
7505	AssertRC(rc);
7506	break;
7507
7508	case SVGA3D_SHADERTYPE_PS:
7509	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pPixelShader);
7510	AssertRC(rc);
7511	break;
7512
7513	default:
7514	AssertFailedReturn(VERR_INVALID_PARAMETER);
7515	}
7516	if (rc != VINF_SUCCESS)
7517	{
7518	vmsvga3dShaderLogRel("Failed to create", type, cbData, pShaderData);
7519
7520	RTMemFree(pShader->pShaderProgram);
7521	memset(pShader, 0, sizeof(*pShader));
7522	pShader->id = SVGA3D_INVALID_ID;
7523	}
7524
7525	return rc;
7526	}
7527
7528	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
7529	{
7530	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7531	AssertReturn(pState, VERR_NO_MEMORY);
7532	PVMSVGA3DSHADER pShader = NULL;
7533
7534	Log(("vmsvga3dShaderDestroy cid=%u shid=%d type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
7535
7536	PVMSVGA3DCONTEXT pContext;
7537	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7538	AssertRCReturn(rc, rc);
7539
7540	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7541
7542	if (type == SVGA3D_SHADERTYPE_VS)
7543	{
7544	if ( shid < pContext->cVertexShaders
7545	&& pContext->paVertexShader[shid].id == shid)
7546	{
7547	pShader = &pContext->paVertexShader[shid];
7548	if (pContext->state.shidVertex == shid)
7549	{
7550	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7551	AssertRC(rc);
7552	}
7553
7554	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7555	AssertRC(rc);
7556	}
7557	}
7558	else
7559	{
7560	Assert(type == SVGA3D_SHADERTYPE_PS);
7561	if ( shid < pContext->cPixelShaders
7562	&& pContext->paPixelShader[shid].id == shid)
7563	{
7564	pShader = &pContext->paPixelShader[shid];
7565	if (pContext->state.shidPixel == shid)
7566	{
7567	ShaderSetPixelShader(pContext->pShaderContext, NULL);
7568	AssertRC(rc);
7569	}
7570
7571	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7572	AssertRC(rc);
7573	}
7574	}
7575
7576	if (pShader)
7577	{
7578	if (pShader->pShaderProgram)
7579	RTMemFree(pShader->pShaderProgram);
7580	memset(pShader, 0, sizeof(*pShader));
7581	pShader->id = SVGA3D_INVALID_ID;
7582	}
7583	else
7584	AssertFailedReturn(VERR_INVALID_PARAMETER);
7585
7586	return VINF_SUCCESS;
7587	}
7588
7589	static DECLCALLBACK(int) vmsvga3dBackShaderSet(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
7590	{
7591	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7592	AssertReturn(pState, VERR_NO_MEMORY);
7593	int rc;
7594
7595	Log(("vmsvga3dShaderSet cid=%u type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
7596
7597	if (!pContext)
7598	{
7599	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7600	AssertRCReturn(rc, rc);
7601	}
7602
7603	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7604
7605	if (type == SVGA3D_SHADERTYPE_VS)
7606	{
7607	/* Save for vm state save/restore. */
7608	pContext->state.shidVertex = shid;
7609	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
7610
7611	if ( shid < pContext->cVertexShaders
7612	&& pContext->paVertexShader[shid].id == shid)
7613	{
7614	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
7615	Assert(type == pShader->type);
7616
7617	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7618	AssertRCReturn(rc, rc);
7619	}
7620	else
7621	if (shid == SVGA_ID_INVALID)
7622	{
7623	/* Unselect shader. */
7624	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7625	AssertRCReturn(rc, rc);
7626	}
7627	else
7628	AssertFailedReturn(VERR_INVALID_PARAMETER);
7629	}
7630	else
7631	{
7632	/* Save for vm state save/restore. */
7633	pContext->state.shidPixel = shid;
7634	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
7635
7636	Assert(type == SVGA3D_SHADERTYPE_PS);
7637	if ( shid < pContext->cPixelShaders
7638	&& pContext->paPixelShader[shid].id == shid)
7639	{
7640	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
7641	Assert(type == pShader->type);
7642
7643	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7644	AssertRCReturn(rc, rc);
7645	}
7646	else
7647	if (shid == SVGA_ID_INVALID)
7648	{
7649	/* Unselect shader. */
7650	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
7651	AssertRCReturn(rc, rc);
7652	}
7653	else
7654	AssertFailedReturn(VERR_INVALID_PARAMETER);
7655	}
7656
7657	return VINF_SUCCESS;
7658	}
7659
7660	static DECLCALLBACK(int) vmsvga3dBackShaderSetConst(PVGASTATECC pThisCC, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
7661	{
7662	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7663	AssertReturn(pState, VERR_NO_MEMORY);
7664
7665	Log(("vmsvga3dShaderSetConst cid=%u reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
7666
7667	PVMSVGA3DCONTEXT pContext;
7668	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7669	AssertRCReturn(rc, rc);
7670
7671	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7672
7673	for (uint32_t i = 0; i < cRegisters; i++)
7674	{
7675	#ifdef LOG_ENABLED
7676	switch (ctype)
7677	{
7678	case SVGA3D_CONST_TYPE_FLOAT:
7679	{
7680	float pValuesF = (float )pValues;
7681	Log(("ConstantF %d: value=" FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR "\n",
7682	reg + i, FLOAT_FMT_ARGS(pValuesF[i4 + 0]), FLOAT_FMT_ARGS(pValuesF[i4 + 1]), FLOAT_FMT_ARGS(pValuesF[i4 + 2]), FLOAT_FMT_ARGS(pValuesF[i4 + 3])));
7683	break;
7684	}
7685
7686	case SVGA3D_CONST_TYPE_INT:
7687	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7688	break;
7689
7690	case SVGA3D_CONST_TYPE_BOOL:
7691	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7692	break;
7693
7694	default:
7695	AssertFailedReturn(VERR_INVALID_PARAMETER);
7696	}
7697	#endif
7698	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
7699	}
7700
7701	switch (type)
7702	{
7703	case SVGA3D_SHADERTYPE_VS:
7704	switch (ctype)
7705	{
7706	case SVGA3D_CONST_TYPE_FLOAT:
7707	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7708	break;
7709
7710	case SVGA3D_CONST_TYPE_INT:
7711	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7712	break;
7713
7714	case SVGA3D_CONST_TYPE_BOOL:
7715	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7716	break;
7717
7718	default:
7719	AssertFailedReturn(VERR_INVALID_PARAMETER);
7720	}
7721	AssertRCReturn(rc, rc);
7722	break;
7723
7724	case SVGA3D_SHADERTYPE_PS:
7725	switch (ctype)
7726	{
7727	case SVGA3D_CONST_TYPE_FLOAT:
7728	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7729	break;
7730
7731	case SVGA3D_CONST_TYPE_INT:
7732	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7733	break;
7734
7735	case SVGA3D_CONST_TYPE_BOOL:
7736	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7737	break;
7738
7739	default:
7740	AssertFailedReturn(VERR_INVALID_PARAMETER);
7741	}
7742	AssertRCReturn(rc, rc);
7743	break;
7744
7745	default:
7746	AssertFailedReturn(VERR_INVALID_PARAMETER);
7747	}
7748
7749	return VINF_SUCCESS;
7750	}
7751
7752	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryCreate(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7753	{
7754	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7755	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7756	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7757
7758	GLuint idQuery = 0;
7759	pState->ext.glGenQueries(1, &idQuery);
7760	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7761	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7762	pContext->occlusion.idQuery = idQuery;
7763	return VINF_SUCCESS;
7764	}
7765
7766	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7767	{
7768	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7769	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7770	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7771
7772	if (pContext->occlusion.idQuery)
7773	{
7774	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7775	}
7776	return VINF_SUCCESS;
7777	}
7778
7779	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryBegin(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7780	{
7781	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7782	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7783	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7784
7785	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7786	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7787	return VINF_SUCCESS;
7788	}
7789
7790	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryEnd(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7791	{
7792	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7793	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7794	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7795
7796	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7797	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7798	return VINF_SUCCESS;
7799	}
7800
7801	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryGetData(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7802	{
7803	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7804	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7805	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7806
7807	GLuint pixels = 0;
7808	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7809	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7810
7811	*pu32Pixels = (uint32_t)pixels;
7812	return VINF_SUCCESS;
7813	}
7814
7815	/**
7816	* Worker for vmsvga3dUpdateHeapBuffersForSurfaces.
7817	*
7818	* This will allocate heap buffers if necessary, thus increasing the memory
7819	* usage of the process.
7820	*
7821	* @todo Would be interesting to share this code with the saved state code.
7822	*
7823	* @returns VBox status code.
7824	* @param pThisCC The VGA/VMSVGA context.
7825	* @param pSurface The surface to refresh the heap buffers for.
7826	*/
7827	static DECLCALLBACK(int) vmsvga3dBackSurfaceUpdateHeapBuffers(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
7828	{
7829	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7830	AssertReturn(pState, VERR_INVALID_STATE);
7831
7832	/*
7833	* Currently we've got trouble retreving bit for DEPTHSTENCIL
7834	* surfaces both for OpenGL and D3D, so skip these here (don't
7835	* wast memory on them).
7836	*/
7837	uint32_t const fSwitchFlags = pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK;
7838	if ( fSwitchFlags != SVGA3D_SURFACE_HINT_DEPTHSTENCIL
7839	&& fSwitchFlags != (SVGA3D_SURFACE_HINT_DEPTHSTENCIL \| SVGA3D_SURFACE_HINT_TEXTURE))
7840	{
7841	/*
7842	* Change OpenGL context to the one the surface is associated with.
7843	*/
7844	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
7845	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7846
7847	/*
7848	* Work thru each mipmap level for each face.
7849	*/
7850	for (uint32_t iFace = 0; iFace < pSurface->cFaces; iFace++)
7851	{
7852	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[iFace * pSurface->cLevels];
7853	for (uint32_t i = 0; i < pSurface->cLevels; i++, pMipmapLevel++)
7854	{
7855	if (VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
7856	{
7857	Assert(pMipmapLevel->cbSurface);
7858	Assert(pMipmapLevel->cbSurface == pMipmapLevel->cbSurfacePlane * pMipmapLevel->mipmapSize.depth);
7859
7860	/*
7861	* Make sure we've got surface memory buffer.
7862	*/
7863	uint8_t pbDst = (uint8_t )pMipmapLevel->pSurfaceData;
7864	if (!pbDst)
7865	{
7866	pMipmapLevel->pSurfaceData = pbDst = (uint8_t *)RTMemAllocZ(pMipmapLevel->cbSurface);
7867	AssertReturn(pbDst, VERR_NO_MEMORY);
7868	}
7869
7870	/*
7871	* OpenGL specifics.
7872	*/
7873	switch (pSurface->enmOGLResType)
7874	{
7875	case VMSVGA3D_OGLRESTYPE_TEXTURE:
7876	{
7877	GLint activeTexture;
7878	glGetIntegerv(GL_TEXTURE_BINDING_2D, &activeTexture);
7879	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7880
7881	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
7882	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7883
7884	/* Set row length and alignment of the output data. */
7885	VMSVGAPACKPARAMS SavedParams;
7886	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
7887
7888	glGetTexImage(GL_TEXTURE_2D,
7889	i,
7890	pSurface->formatGL,
7891	pSurface->typeGL,
7892	pbDst);
7893	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7894
7895	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
7896
7897	/* Restore the old active texture. */
7898	glBindTexture(GL_TEXTURE_2D, activeTexture);
7899	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7900	break;
7901	}
7902
7903	case VMSVGA3D_OGLRESTYPE_BUFFER:
7904	{
7905	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
7906	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7907
7908	void *pvSrc = pState->ext.glMapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
7909	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7910	if (RT_VALID_PTR(pvSrc))
7911	memcpy(pbDst, pvSrc, pMipmapLevel->cbSurface);
7912	else
7913	AssertPtr(pvSrc);
7914
7915	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
7916	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7917
7918	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7919	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7920	break;
7921	}
7922
7923	default:
7924	AssertMsgFailed(("%#x\n", fSwitchFlags));
7925	}
7926	}
7927	/* else: There is no data in hardware yet, so whatever we got is already current. */
7928	}
7929	}
7930	}
7931
7932	return VINF_SUCCESS;
7933	}
7934
7935	static DECLCALLBACK(int) vmsvga3dBackQueryInterface(PVGASTATECC pThisCC, char const pszInterfaceName, void pvInterfaceFuncs, size_t cbInterfaceFuncs)
7936	{
7937	RT_NOREF(pThisCC);
7938
7939	int rc = VINF_SUCCESS;
7940	if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_3D) == 0)
7941	{
7942	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCS3D))
7943	{
7944	if (pvInterfaceFuncs)
7945	{
7946	VMSVGA3DBACKENDFUNCS3D p = (VMSVGA3DBACKENDFUNCS3D )pvInterfaceFuncs;
7947	p->pfnInit = vmsvga3dBackInit;
7948	p->pfnPowerOn = vmsvga3dBackPowerOn;
7949	p->pfnTerminate = vmsvga3dBackTerminate;
7950	p->pfnReset = vmsvga3dBackReset;
7951	p->pfnQueryCaps = vmsvga3dBackQueryCaps;
7952	p->pfnChangeMode = vmsvga3dBackChangeMode;
7953	p->pfnCreateTexture = vmsvga3dBackCreateTexture;
7954	p->pfnSurfaceDestroy = vmsvga3dBackSurfaceDestroy;
7955	p->pfnSurfaceInvalidateImage = vmsvga3dBackSurfaceInvalidateImage;
7956	p->pfnSurfaceCopy = vmsvga3dBackSurfaceCopy;
7957	p->pfnSurfaceDMACopyBox = vmsvga3dBackSurfaceDMACopyBox;
7958	p->pfnSurfaceStretchBlt = vmsvga3dBackSurfaceStretchBlt;
7959	p->pfnUpdateHostScreenViewport = vmsvga3dBackUpdateHostScreenViewport;
7960	p->pfnDefineScreen = vmsvga3dBackDefineScreen;
7961	p->pfnDestroyScreen = vmsvga3dBackDestroyScreen;
7962	p->pfnSurfaceBlitToScreen = vmsvga3dBackSurfaceBlitToScreen;
7963	p->pfnSurfaceUpdateHeapBuffers = vmsvga3dBackSurfaceUpdateHeapBuffers;
7964	}
7965	}
7966	else
7967	{
7968	AssertFailed();
7969	rc = VERR_INVALID_PARAMETER;
7970	}
7971	}
7972	else if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_VGPU9) == 0)
7973	{
7974	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCSVGPU9))
7975	{
7976	if (pvInterfaceFuncs)
7977	{
7978	VMSVGA3DBACKENDFUNCSVGPU9 p = (VMSVGA3DBACKENDFUNCSVGPU9 )pvInterfaceFuncs;
7979	p->pfnContextDefine = vmsvga3dBackContextDefine;
7980	p->pfnContextDestroy = vmsvga3dBackContextDestroy;
7981	p->pfnSetTransform = vmsvga3dBackSetTransform;
7982	p->pfnSetZRange = vmsvga3dBackSetZRange;
7983	p->pfnSetRenderState = vmsvga3dBackSetRenderState;
7984	p->pfnSetRenderTarget = vmsvga3dBackSetRenderTarget;
7985	p->pfnSetTextureState = vmsvga3dBackSetTextureState;
7986	p->pfnSetMaterial = vmsvga3dBackSetMaterial;
7987	p->pfnSetLightData = vmsvga3dBackSetLightData;
7988	p->pfnSetLightEnabled = vmsvga3dBackSetLightEnabled;
7989	p->pfnSetViewPort = vmsvga3dBackSetViewPort;
7990	p->pfnSetClipPlane = vmsvga3dBackSetClipPlane;
7991	p->pfnCommandClear = vmsvga3dBackCommandClear;
7992	p->pfnDrawPrimitives = vmsvga3dBackDrawPrimitives;
7993	p->pfnSetScissorRect = vmsvga3dBackSetScissorRect;
7994	p->pfnGenerateMipmaps = vmsvga3dBackGenerateMipmaps;
7995	p->pfnShaderDefine = vmsvga3dBackShaderDefine;
7996	p->pfnShaderDestroy = vmsvga3dBackShaderDestroy;
7997	p->pfnShaderSet = vmsvga3dBackShaderSet;
7998	p->pfnShaderSetConst = vmsvga3dBackShaderSetConst;
7999	p->pfnOcclusionQueryCreate = vmsvga3dBackOcclusionQueryCreate;
8000	p->pfnOcclusionQueryDelete = vmsvga3dBackOcclusionQueryDelete;
8001	p->pfnOcclusionQueryBegin = vmsvga3dBackOcclusionQueryBegin;
8002	p->pfnOcclusionQueryEnd = vmsvga3dBackOcclusionQueryEnd;
8003	p->pfnOcclusionQueryGetData = vmsvga3dBackOcclusionQueryGetData;
8004	}
8005	}
8006	else
8007	{
8008	AssertFailed();
8009	rc = VERR_INVALID_PARAMETER;
8010	}
8011	}
8012	else
8013	rc = VERR_NOT_IMPLEMENTED;
8014	return rc;
8015	}
8016
8017
8018	extern VMSVGA3DBACKENDDESC const g_BackendLegacy =
8019	{
8020	"LEGACY",
8021	vmsvga3dBackQueryInterface
8022	};

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 96407

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