DevVGA-SVGA3d-ogl.cpp

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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2024 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, pThisCC);
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	#ifdef RT_OS_WINDOWS
645	/* Create event semaphore and async IO thread. */
646	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
647	rc = RTSemEventCreate(&pState->WndRequestSem);
648	if (RT_SUCCESS(rc))
649	{
650	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
651	"VMSVGA3DWND");
652	if (RT_SUCCESS(rc))
653	return VINF_SUCCESS;
654
655	/* bail out. */
656	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
657	RTSemEventDestroy(pState->WndRequestSem);
658	}
659	else
660	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
661	return rc;
662	#else
663	return VINF_SUCCESS;
664	#endif
665	}
666
667	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
668	{
669	/* A strict approach to get a proc address as recommended by Khronos:
670	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
671	* - "If the function is an extension, we need to check to see if the extension is supported."
672	*/
673
674	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
675	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
676	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
677	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
678	} while(0)
679
680	/* Get an optional function address. LogRel on failure. */
681	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
682	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
683	if (!pState->ext.ProcName) \
684	{ \
685	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
686	AssertFailed(); \
687	} \
688	} while(0)
689
690	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
691	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
692	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
693	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
694	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
695	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
696	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
697	GLGETPROC_(PFNGLTEXSUBIMAGE3DPROC , glTexSubImage3D, "");
698	GLGETPROC_(PFNGLGETCOMPRESSEDTEXIMAGEPROC , glGetCompressedTexImage, "");
699	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
700	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
701	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC , glCompressedTexSubImage2D, "");
702	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC , glCompressedTexSubImage3D, "");
703	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
704	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
705	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
706	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
707	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
708	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
709	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
710	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
711	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
712	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
713	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
714	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
715	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
716	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
717	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
718	/* glGetProgramivARB determines implementation limits for the program
719	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
720	* It differs from glGetProgramiv, which returns a parameter from a program object.
721	*/
722	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
723	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
724	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
725	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
726	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
727	#endif
728	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
729	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
730	#endif
731	GLGETPROC_(PFNGLDRAWBUFFERSPROC , glDrawBuffers, "");
732	GLGETPROC_(PFNGLCREATESHADERPROC , glCreateShader, "");
733	GLGETPROC_(PFNGLSHADERSOURCEPROC , glShaderSource, "");
734	GLGETPROC_(PFNGLCOMPILESHADERPROC , glCompileShader, "");
735	GLGETPROC_(PFNGLGETSHADERIVPROC , glGetShaderiv, "");
736	GLGETPROC_(PFNGLGETSHADERINFOLOGPROC , glGetShaderInfoLog, "");
737	GLGETPROC_(PFNGLCREATEPROGRAMPROC , glCreateProgram, "");
738	GLGETPROC_(PFNGLATTACHSHADERPROC , glAttachShader, "");
739	GLGETPROC_(PFNGLLINKPROGRAMPROC , glLinkProgram, "");
740	GLGETPROC_(PFNGLGETPROGRAMIVPROC , glGetProgramiv, "");
741	GLGETPROC_(PFNGLGETPROGRAMINFOLOGPROC , glGetProgramInfoLog, "");
742	GLGETPROC_(PFNGLUSEPROGRAMPROC , glUseProgram, "");
743	GLGETPROC_(PFNGLGETUNIFORMLOCATIONPROC , glGetUniformLocation, "");
744	GLGETPROC_(PFNGLUNIFORM1IPROC , glUniform1i, "");
745	GLGETPROC_(PFNGLUNIFORM4FVPROC , glUniform4fv, "");
746	GLGETPROC_(PFNGLDETACHSHADERPROC , glDetachShader, "");
747	GLGETPROC_(PFNGLDELETESHADERPROC , glDeleteShader, "");
748	GLGETPROC_(PFNGLDELETEPROGRAMPROC , glDeleteProgram, "");
749
750	GLGETPROC_(PFNGLVERTEXATTRIB4FVPROC , glVertexAttrib4fv, "");
751	GLGETPROC_(PFNGLVERTEXATTRIB4UBVPROC , glVertexAttrib4ubv, "");
752	GLGETPROC_(PFNGLVERTEXATTRIB4NUBVPROC , glVertexAttrib4Nubv, "");
753	GLGETPROC_(PFNGLVERTEXATTRIB4SVPROC , glVertexAttrib4sv, "");
754	GLGETPROC_(PFNGLVERTEXATTRIB4NSVPROC , glVertexAttrib4Nsv, "");
755	GLGETPROC_(PFNGLVERTEXATTRIB4NUSVPROC , glVertexAttrib4Nusv, "");
756
757	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
758	if ( pState->rsGLVersion >= 3.0f
759	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
760	{
761	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
762	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
763	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
764	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
765	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
766	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
767	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
768	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
769	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
770	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
771	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
772	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
773	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
774	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
775	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
776	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
777	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
778	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
779	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
780	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
781	}
782
783	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
784	if (pState->rsGLVersion >= 3.1f)
785	{
786	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
787	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
788	}
789	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
790	{
791	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
792	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
793	}
794	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
795	{
796	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
797	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
798	}
799
800	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
801	if ( pState->rsGLVersion >= 3.2f
802	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
803	{
804	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
805	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
806	}
807
808	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
809	if ( pState->rsGLVersion >= 3.2f
810	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
811	{
812	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
813	}
814
815	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
816	if (pState->rsGLVersion >= 3.3f)
817	{
818	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
819	}
820	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
821	{
822	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
823	}
824
825	#undef GLGETPROCOPT_
826	#undef GLGETPROC_
827
828	return VINF_SUCCESS;
829	}
830
831
832	DECLINLINE(GLenum) vmsvga3dCubemapFaceFromIndex(uint32_t iFace)
833	{
834	GLint Face;
835	switch (iFace)
836	{
837	case 0: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; break;
838	case 1: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; break;
839	case 2: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; break;
840	case 3: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; break;
841	case 4: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; break;
842	default:
843	case 5: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; break;
844	}
845	return Face;
846	}
847
848
849	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
850	static DECLCALLBACK(int) vmsvga3dBackPowerOn(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
851	{
852	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
853	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
854	PVMSVGA3DCONTEXT pContext;
855	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
856	PVMSVGA3DCONTEXT pOtherCtx;
857	#endif
858	int rc;
859	RT_NOREF(pDevIns, pThis);
860
861	if (pState->rsGLVersion != 0.0)
862	return VINF_SUCCESS; /* already initialized (load state) */
863
864	/*
865	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
866	*/
867	rc = vmsvga3dContextDefineOgl(pThisCC, 1, VMSVGA3D_DEF_CTX_F_INIT);
868	AssertRCReturn(rc, rc);
869
870	pContext = pState->papContexts[1];
871	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
872
873	#ifdef VMSVGA3D_DYNAMIC_LOAD
874	/* Context is set and it is possible now to resolve extension functions. */
875	rc = glLdrGetExtFunctions(pDevIns);
876	if (RT_FAILURE(rc))
877	{
878	LogRel(("VMSVGA3d: Error resolving extension functions: %Rrc\n", rc));
879	return rc;
880	}
881	#endif
882
883	LogRel(("VMSVGA3d: OpenGL version: %s\n"
884	"VMSVGA3d: OpenGL Vendor: %s\n"
885	"VMSVGA3d: OpenGL Renderer: %s\n"
886	"VMSVGA3d: OpenGL shader language version: %s\n",
887	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
888	glGetString(GL_SHADING_LANGUAGE_VERSION)));
889
890	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
891	AssertRCReturn(rc, rc);
892	vmsvga3dLogRelExtensions("", pState->pszExtensions);
893
894	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
895
896
897	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
898	/*
899	* Get the extension list for the alternative profile so we can better
900	* figure out the shader model and stuff.
901	*/
902	rc = vmsvga3dContextDefineOgl(pThisCC, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
903	AssertLogRelRCReturn(rc, rc);
904	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
905
906	pOtherCtx = pState->papContexts[2];
907	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
908
909	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
910	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
911	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
912	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
913	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
914	glGetString(GL_SHADING_LANGUAGE_VERSION)));
915
916	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
917	AssertRCReturn(rc, rc);
918	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
919
920	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
921
922	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
923	#else
924	pState->pszOtherExtensions = (char *)"";
925	pState->rsOtherGLVersion = pState->rsGLVersion;
926	#endif
927
928	/*
929	* Resolve GL function pointers and store them in pState->ext.
930	*/
931	rc = vmsvga3dLoadGLFunctions(pState);
932	if (RT_FAILURE(rc))
933	{
934	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
935	return rc;
936	}
937
938	/*
939	* Initialize the capabilities with sensible defaults.
940	*/
941	pState->caps.maxActiveLights = 1;
942	pState->caps.maxTextures = 1;
943	pState->caps.maxClipDistances = 4;
944	pState->caps.maxColorAttachments = 1;
945	pState->caps.maxRectangleTextureSize = 2048;
946	pState->caps.maxTextureAnisotropy = 1;
947	pState->caps.maxVertexShaderInstructions = 1024;
948	pState->caps.maxFragmentShaderInstructions = 1024;
949	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
950	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
951	pState->caps.flPointSize[0] = 1;
952	pState->caps.flPointSize[1] = 1;
953
954	/*
955	* Query capabilities
956	*/
957	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
958	pState->caps.fTextureFilterAnisotropicSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_filter_anisotropic ");
959
960	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
961	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
962	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
963	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
964	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
965	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
966	#else
967	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
968	#endif
969	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
970	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
971	if (pState->caps.fTextureFilterAnisotropicSupported)
972	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
973	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
974
975	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
976	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
977	&pState->caps.maxFragmentShaderTemps));
978	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
979	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
980	&pState->caps.maxFragmentShaderInstructions));
981	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
982	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
983	&pState->caps.maxVertexShaderTemps));
984	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
985	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
986	&pState->caps.maxVertexShaderInstructions));
987
988	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
989	* ARB Assembly Language
990	* These are done through testing the presence of extensions. You should test them in this order:
991	* GL_NV_gpu_program4: SM 4.0 or better.
992	* GL_NV_vertex_program3: SM 3.0 or better.
993	* GL_ARB_fragment_program: SM 2.0 or better.
994	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
995	*
996	*/
997	/** @todo distinguish between vertex and pixel shaders??? */
998	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
999	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
1000	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
1001	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
1002	#else
1003	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
1004	#endif
1005	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
1006	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
1007	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
1008	{
1009	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
1010	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
1011	}
1012	else
1013	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
1014	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
1015	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
1016	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
1017	)
1018	{
1019	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
1020	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
1021	}
1022	else
1023	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
1024	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
1025	{
1026	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
1027	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
1028	}
1029	else
1030	{
1031	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
1032	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
1033	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
1034	}
1035
1036	/* Now check the shading language version, in case it indicates a higher supported version. */
1037	if (v >= 3.30f)
1038	{
1039	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_40);
1040	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_40);
1041	}
1042	else
1043	if (v >= 1.20f)
1044	{
1045	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_20);
1046	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_20);
1047	}
1048
1049	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
1050	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
1051	{
1052	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
1053	}
1054
1055	/*
1056	* Tweak capabilities.
1057	*/
1058	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
1059	if ( pState->caps.maxVertexShaderTemps < 32
1060	&& vmsvga3dIsVendorIntel())
1061	pState->caps.maxVertexShaderTemps = 32;
1062
1063	#if 0
1064	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
1065	SVGA3D_DEVCAP_QUERY_TYPES = 15,
1066	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
1067	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
1068	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
1069	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
1070	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
1071	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
1072	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
1073	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
1074	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
1075	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
1076	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
1077	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
1078	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
1079	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
1080	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
1081	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
1082	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
1083	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
1084	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
1085	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
1086	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
1087	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
1088	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
1089	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1090	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1091	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1092	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1093	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1094	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1095	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1096	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1097	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1098	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1099	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1100	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1101	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1102	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1103	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1104	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1105	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1106	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1107	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1108	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1109	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1110	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1111	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1112	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1113	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1114	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1115	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1116	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1117	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1118	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1119	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1120	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1121	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1122	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1123	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1124	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1125	SVGA3D_DEVCAP_SURFACEFMT_ATI1 = 82,
1126	SVGA3D_DEVCAP_SURFACEFMT_ATI2 = 83,
1127	#endif
1128
1129	LogRel(("VMSVGA3d: Capabilities:\n"));
1130	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d\n",
1131	pState->caps.maxActiveLights, pState->caps.maxTextures));
1132	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1133	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1134	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1135	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1136	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1137	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1138	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1139	pState->caps.maxFragmentShaderTemps,
1140	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1141	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1142	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d\n",
1143	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion));
1144	LogRel(("VMSVGA3d: fS3TCSupported=%-2d fTextureFilterAnisotropicSupported=%d\n",
1145	pState->caps.fS3TCSupported, pState->caps.fTextureFilterAnisotropicSupported));
1146
1147
1148	/* Initialize the shader library. */
1149	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1150	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1151	rc = ShaderInitLib(&pState->ShaderIf);
1152	AssertRC(rc);
1153
1154	/* Cleanup */
1155	rc = vmsvga3dBackContextDestroy(pThisCC, 1);
1156	AssertRC(rc);
1157	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1158	rc = vmsvga3dBackContextDestroy(pThisCC, 2);
1159	AssertRC(rc);
1160	#endif
1161
1162	if ( pState->rsGLVersion < 3.0
1163	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1164	{
1165	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1166	return VERR_NOT_IMPLEMENTED;
1167	}
1168
1169	return VINF_SUCCESS;
1170	}
1171
1172	static DECLCALLBACK(int) vmsvga3dBackReset(PVGASTATECC pThisCC)
1173	{
1174	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1175	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
1176
1177	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1178	vmsvga3dContextDestroyOgl(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1179
1180	return VINF_SUCCESS;
1181	}
1182
1183	static DECLCALLBACK(int) vmsvga3dBackTerminate(PVGASTATECC pThisCC)
1184	{
1185	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1186	AssertReturn(pState, VERR_WRONG_ORDER);
1187	int rc;
1188
1189	/* Terminate the shader library. */
1190	rc = ShaderDestroyLib();
1191	AssertRC(rc);
1192
1193	#ifdef RT_OS_WINDOWS
1194	/* Terminate the window creation thread. */
1195	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1196	AssertRCReturn(rc, rc);
1197
1198	RTSemEventDestroy(pState->WndRequestSem);
1199	#elif defined(RT_OS_DARWIN)
1200
1201	#elif defined(RT_OS_LINUX)
1202	/* signal to the thread that it is supposed to exit */
1203	pState->bTerminate = true;
1204	/* wait for it to terminate */
1205	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1206	AssertRC(rc);
1207	XCloseDisplay(pState->display);
1208	#endif
1209
1210	RTStrFree(pState->pszExtensions);
1211	pState->pszExtensions = NULL;
1212	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1213	RTStrFree(pState->pszOtherExtensions);
1214	#endif
1215	pState->pszOtherExtensions = NULL;
1216
1217	return VINF_SUCCESS;
1218	}
1219
1220
1221	static DECLCALLBACK(void) vmsvga3dBackUpdateHostScreenViewport(PVGASTATECC pThisCC, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1222	{
1223	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1224	* redraw it. */
1225
1226	#ifdef RT_OS_DARWIN
1227	RT_NOREF(pOldViewport);
1228	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1229	if ( pState
1230	&& idScreen == 0
1231	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1232	{
1233	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1234	}
1235	#else
1236	RT_NOREF(pThisCC, idScreen, pOldViewport);
1237	#endif
1238	}
1239
1240
1241	/**
1242	* Worker for vmsvga3dBackQueryCaps that figures out supported operations for a
1243	* given surface format capability.
1244	*
1245	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1246	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1247	*
1248	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1249	* of implicit guest expectations:
1250	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1251	*/
1252	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1253	{
1254	uint32_t result = 0;
1255
1256	/** @todo missing:
1257	*
1258	* SVGA3DFORMAT_OP_PIXELSIZE
1259	*/
1260
1261	switch (idx3dCaps)
1262	{
1263	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1264	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1265	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1266	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1267	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1268	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1269	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1270	break;
1271
1272	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1273	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1274	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1275	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1276	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1277	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1278	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1279	break;
1280	}
1281
1282	/** @todo check hardware caps! */
1283	switch (idx3dCaps)
1284	{
1285	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1286	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1287	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1288	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1289	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1290	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1291	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1292	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1293	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1294	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1295	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1296	result \|= SVGA3DFORMAT_OP_TEXTURE
1297	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1298	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1299	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1300	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1301	\| SVGA3DFORMAT_OP_CUBETEXTURE
1302	\| SVGA3DFORMAT_OP_SRGBREAD
1303	\| SVGA3DFORMAT_OP_SRGBWRITE;
1304	break;
1305
1306	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1307	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1308	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1309	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1310	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1311	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1312	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1313	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1314	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1315	break;
1316
1317	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1318	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1319	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1320	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1321	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1322	result \|= SVGA3DFORMAT_OP_TEXTURE
1323	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1324	\| SVGA3DFORMAT_OP_CUBETEXTURE
1325	\| SVGA3DFORMAT_OP_SRGBREAD;
1326	break;
1327
1328	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1329	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1330	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1331	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1332	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1333	break;
1334
1335	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1336	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1337	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1338	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1339	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1340	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1341	result \|= SVGA3DFORMAT_OP_TEXTURE
1342	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1343	\| SVGA3DFORMAT_OP_CUBETEXTURE
1344	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1345	break;
1346
1347	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1348	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1349	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1350	result \|= SVGA3DFORMAT_OP_TEXTURE
1351	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1352	\| SVGA3DFORMAT_OP_CUBETEXTURE
1353	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1354	break;
1355
1356	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1357	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1358	result \|= SVGA3DFORMAT_OP_OFFSCREENPLAIN
1359	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1360	\| SVGA3DFORMAT_OP_TEXTURE;
1361	break;
1362
1363	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1364	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1365	break;
1366	}
1367	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1368
1369	return result;
1370	}
1371
1372	#if 0 /* unused */
1373	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1374	{
1375	RT_NOREF(pState3D, idx3dCaps);
1376
1377	/** @todo test this somehow */
1378	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1379
1380	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1381	return result;
1382	}
1383	#endif
1384
1385
1386	static DECLCALLBACK(int) vmsvga3dBackQueryCaps(PVGASTATECC pThisCC, SVGA3dDevCapIndex idx3dCaps, uint32_t *pu32Val)
1387	{
1388	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1389	AssertReturn(pState, VERR_NO_MEMORY);
1390	int rc = VINF_SUCCESS;
1391
1392	*pu32Val = 0;
1393
1394	/*
1395	* The capabilities access by current (2015-03-01) linux sources (gallium,
1396	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1397	* aren't access.
1398	*/
1399
1400	switch (idx3dCaps)
1401	{
1402	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1403	case SVGA3D_DEVCAP_3D:
1404	pu32Val = 1; / boolean? */
1405	break;
1406
1407	case SVGA3D_DEVCAP_MAX_LIGHTS:
1408	*pu32Val = pState->caps.maxActiveLights;
1409	break;
1410
1411	case SVGA3D_DEVCAP_MAX_TEXTURES:
1412	*pu32Val = pState->caps.maxTextures;
1413	break;
1414
1415	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1416	*pu32Val = pState->caps.maxClipDistances;
1417	break;
1418
1419	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1420	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1421	*pu32Val = pState->caps.vertexShaderVersion;
1422	break;
1423
1424	case SVGA3D_DEVCAP_VERTEX_SHADER:
1425	/* boolean? */
1426	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1427	break;
1428
1429	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1430	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1431	*pu32Val = pState->caps.fragmentShaderVersion;
1432	break;
1433
1434	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1435	/* boolean? */
1436	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1437	break;
1438
1439	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1440	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1441	/* Must be obsolete by now; surface format caps specify the same thing. */
1442	rc = VERR_INVALID_PARAMETER;
1443	break;
1444
1445	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1446	break;
1447
1448	/*
1449	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1450	* return TRUE. Even on physical hardware that does not support
1451	* these formats natively, the SVGA3D device will provide an emulation
1452	* which should be invisible to the guest OS.
1453	*/
1454	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1455	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1456	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1457	*pu32Val = 1;
1458	break;
1459
1460	case SVGA3D_DEVCAP_QUERY_TYPES:
1461	break;
1462
1463	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1464	break;
1465
1466	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1467	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1468	AssertCompile(sizeof(uint32_t) == sizeof(float));
1469	(float )pu32Val = pState->caps.flPointSize[1];
1470	break;
1471
1472	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1473	/** @todo ?? */
1474	rc = VERR_INVALID_PARAMETER;
1475	break;
1476
1477	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1478	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1479	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1480	*pu32Val = pState->caps.maxRectangleTextureSize;
1481	break;
1482
1483	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1484	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1485	//*pu32Val = pCaps->MaxVolumeExtent;
1486	*pu32Val = 256;
1487	break;
1488
1489	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1490	pu32Val = 32768; / hardcoded in Wine */
1491	break;
1492
1493	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1494	//*pu32Val = pCaps->MaxTextureAspectRatio;
1495	break;
1496
1497	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1498	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1499	*pu32Val = pState->caps.maxTextureAnisotropy;
1500	break;
1501
1502	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1503	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1504	pu32Val = 0xFFFFF; / hardcoded in Wine */
1505	break;
1506
1507	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1508	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1509	*pu32Val = pState->caps.maxVertexShaderInstructions;
1510	break;
1511
1512	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1513	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1514	break;
1515
1516	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1517	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1518	*pu32Val = pState->caps.maxVertexShaderTemps;
1519	break;
1520
1521	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1522	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1523	*pu32Val = pState->caps.maxFragmentShaderTemps;
1524	break;
1525
1526	case SVGA3D_DEVCAP_TEXTURE_OPS:
1527	break;
1528
1529	case SVGA3D_DEVCAP_DEAD4: /* SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES */
1530	break;
1531
1532	case SVGA3D_DEVCAP_DEAD5: /* SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES */
1533	break;
1534
1535	case SVGA3D_DEVCAP_DEAD7: /* SVGA3D_DEVCAP_ALPHATOCOVERAGE */
1536	break;
1537
1538	case SVGA3D_DEVCAP_DEAD6: /* SVGA3D_DEVCAP_SUPERSAMPLE */
1539	break;
1540
1541	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1542	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1543	break;
1544
1545	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1546	break;
1547
1548	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1549	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1550	*pu32Val = pState->caps.maxColorAttachments;
1551	break;
1552
1553	/*
1554	* This is the maximum number of SVGA context IDs that the guest
1555	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1556	*/
1557	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1558	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1559	break;
1560
1561	/*
1562	* This is the maximum number of SVGA surface IDs that the guest
1563	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1564	*/
1565	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1566	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1567	break;
1568
1569	#if 0 /* Appeared more recently, not yet implemented. */
1570	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1571	case SVGA3D_DEVCAP_LINE_AA:
1572	break;
1573	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1574	case SVGA3D_DEVCAP_LINE_STIPPLE:
1575	break;
1576	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1577	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1578	break;
1579	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1580	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1581	break;
1582	#endif
1583
1584	/*
1585	* Supported surface formats.
1586	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1587	*/
1588	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1589	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1590	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1591	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1592	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1593	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1594	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1595	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1596	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1597	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1598	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1599	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1600	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1601	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1602	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1603	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1604	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1605	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1606	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1607	break;
1608
1609	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1610	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1611	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1612	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1613	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1614	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1615	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1616	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1617	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1618	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1619	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1620	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1621	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1622	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1623	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1624	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1625	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1626	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1627	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1628	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1629	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1630	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1631	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1632	break;
1633
1634	/* Linux: Not referenced in current sources. */
1635	case SVGA3D_DEVCAP_SURFACEFMT_ATI1:
1636	case SVGA3D_DEVCAP_SURFACEFMT_ATI2:
1637	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1638	rc = VERR_INVALID_PARAMETER;
1639	*pu32Val = 0;
1640	break;
1641
1642	default:
1643	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1644	rc = VERR_INVALID_PARAMETER;
1645	break;
1646	}
1647
1648	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1649	return rc;
1650	}
1651
1652	/**
1653	* Convert SVGA format value to its OpenGL equivalent
1654	*
1655	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1656	* help from wined3dformat_from_d3dformat().
1657	*/
1658	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1659	{
1660	#if 0
1661	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1662	#else
1663	#define AssertTestFmt(f) do {} while(0)
1664	#endif
1665	/* Init cbBlockGL for non-emulated formats. */
1666	pSurface->cbBlockGL = pSurface->cbBlock;
1667
1668	switch (format)
1669	{
1670	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1671	pSurface->internalFormatGL = GL_RGB8;
1672	pSurface->formatGL = GL_BGRA;
1673	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1674	break;
1675	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1676	pSurface->internalFormatGL = GL_RGBA8;
1677	pSurface->formatGL = GL_BGRA;
1678	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1679	break;
1680	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1681	pSurface->internalFormatGL = GL_RGB5;
1682	pSurface->formatGL = GL_RGB;
1683	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1684	AssertTestFmt(SVGA3D_R5G6B5);
1685	break;
1686	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1687	pSurface->internalFormatGL = GL_RGB5;
1688	pSurface->formatGL = GL_BGRA;
1689	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1690	AssertTestFmt(SVGA3D_X1R5G5B5);
1691	break;
1692	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1693	pSurface->internalFormatGL = GL_RGB5_A1;
1694	pSurface->formatGL = GL_BGRA;
1695	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1696	AssertTestFmt(SVGA3D_A1R5G5B5);
1697	break;
1698	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1699	pSurface->internalFormatGL = GL_RGBA4;
1700	pSurface->formatGL = GL_BGRA;
1701	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1702	AssertTestFmt(SVGA3D_A4R4G4B4);
1703	break;
1704
1705	case SVGA3D_R8G8B8A8_UNORM:
1706	pSurface->internalFormatGL = GL_RGBA8;
1707	pSurface->formatGL = GL_RGBA;
1708	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1709	break;
1710
1711	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1712	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1713	pSurface->formatGL = GL_DEPTH_COMPONENT;
1714	pSurface->typeGL = GL_UNSIGNED_INT;
1715	break;
1716	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1717	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1718	pSurface->formatGL = GL_DEPTH_COMPONENT;
1719	pSurface->typeGL = GL_UNSIGNED_SHORT;
1720	AssertTestFmt(SVGA3D_Z_D16);
1721	break;
1722	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1723	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1724	pSurface->formatGL = GL_DEPTH_STENCIL;
1725	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1726	break;
1727	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1728	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1729	pSurface->formatGL = GL_DEPTH_STENCIL;
1730	pSurface->typeGL = GL_UNSIGNED_SHORT;
1731	/** @todo Wine sources hints at no hw support for this, so test this one! */
1732	AssertTestFmt(SVGA3D_Z_D15S1);
1733	break;
1734	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1735	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1736	pSurface->formatGL = GL_DEPTH_COMPONENT;
1737	pSurface->typeGL = GL_UNSIGNED_INT;
1738	AssertTestFmt(SVGA3D_Z_D24X8);
1739	break;
1740
1741	/* Advanced D3D9 depth formats. */
1742	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1743	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1744	pSurface->formatGL = GL_DEPTH_COMPONENT;
1745	pSurface->typeGL = GL_HALF_FLOAT;
1746	break;
1747
1748	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1749	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1750	pSurface->formatGL = GL_DEPTH_COMPONENT;
1751	pSurface->typeGL = GL_FLOAT; /* ??? */
1752	break;
1753
1754	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1755	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1756	pSurface->formatGL = GL_DEPTH_STENCIL;
1757	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1758	break;
1759
1760	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1761	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1762	pSurface->formatGL = GL_RGBA; /* not used */
1763	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1764	break;
1765
1766	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1767	/* "DXT2 and DXT3 are the same from an API perspective." */
1768	RT_FALL_THRU();
1769	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1770	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1771	pSurface->formatGL = GL_RGBA; /* not used */
1772	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1773	break;
1774
1775	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1776	/* "DXT4 and DXT5 are the same from an API perspective." */
1777	RT_FALL_THRU();
1778	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1779	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1780	pSurface->formatGL = GL_RGBA; /* not used */
1781	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1782	break;
1783
1784	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1785	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1786	pSurface->formatGL = GL_LUMINANCE;
1787	pSurface->typeGL = GL_UNSIGNED_BYTE;
1788	break;
1789
1790	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1791	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1792	pSurface->formatGL = GL_LUMINANCE;
1793	pSurface->typeGL = GL_UNSIGNED_SHORT;
1794	break;
1795
1796	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1797	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1798	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1799	pSurface->typeGL = GL_UNSIGNED_BYTE;
1800	break;
1801
1802	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1803	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1804	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1805	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1806	break;
1807
1808	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1809	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1810	pSurface->formatGL = GL_ALPHA;
1811	pSurface->typeGL = GL_UNSIGNED_BYTE;
1812	break;
1813
1814	#if 0
1815
1816	/* Bump-map formats */
1817	case SVGA3D_BUMPU8V8:
1818	return D3DFMT_V8U8;
1819	case SVGA3D_BUMPL6V5U5:
1820	return D3DFMT_L6V5U5;
1821	case SVGA3D_BUMPX8L8V8U8:
1822	return D3DFMT_X8L8V8U8;
1823	case SVGA3D_FORMAT_DEAD1:
1824	/* No corresponding D3D9 equivalent. */
1825	AssertFailedReturn(D3DFMT_UNKNOWN);
1826	/* signed bump-map formats */
1827	case SVGA3D_V8U8:
1828	return D3DFMT_V8U8;
1829	case SVGA3D_Q8W8V8U8:
1830	return D3DFMT_Q8W8V8U8;
1831	case SVGA3D_CxV8U8:
1832	return D3DFMT_CxV8U8;
1833	/* mixed bump-map formats */
1834	case SVGA3D_X8L8V8U8:
1835	return D3DFMT_X8L8V8U8;
1836	case SVGA3D_A2W10V10U10:
1837	return D3DFMT_A2W10V10U10;
1838	#endif
1839
1840	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1841	pSurface->internalFormatGL = GL_RGBA16F;
1842	pSurface->formatGL = GL_RGBA;
1843	#if 0 /* bird: wine uses half float, sounds correct to me... */
1844	pSurface->typeGL = GL_FLOAT;
1845	#else
1846	pSurface->typeGL = GL_HALF_FLOAT;
1847	AssertTestFmt(SVGA3D_ARGB_S10E5);
1848	#endif
1849	break;
1850
1851	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1852	pSurface->internalFormatGL = GL_RGBA32F;
1853	pSurface->formatGL = GL_RGBA;
1854	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1855	break;
1856
1857	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1858	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1859	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1860	pSurface->formatGL = GL_RGBA;
1861	#else
1862	pSurface->formatGL = GL_BGRA;
1863	#endif
1864	pSurface->typeGL = GL_UNSIGNED_INT;
1865	AssertTestFmt(SVGA3D_A2R10G10B10);
1866	break;
1867
1868
1869	/* Single- and dual-component floating point formats */
1870	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1871	pSurface->internalFormatGL = GL_R16F;
1872	pSurface->formatGL = GL_RED;
1873	#if 0 /* bird: wine uses half float, sounds correct to me... */
1874	pSurface->typeGL = GL_FLOAT;
1875	#else
1876	pSurface->typeGL = GL_HALF_FLOAT;
1877	AssertTestFmt(SVGA3D_R_S10E5);
1878	#endif
1879	break;
1880	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1881	pSurface->internalFormatGL = GL_R32F;
1882	pSurface->formatGL = GL_RED;
1883	pSurface->typeGL = GL_FLOAT;
1884	break;
1885	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1886	pSurface->internalFormatGL = GL_RG16F;
1887	pSurface->formatGL = GL_RG;
1888	#if 0 /* bird: wine uses half float, sounds correct to me... */
1889	pSurface->typeGL = GL_FLOAT;
1890	#else
1891	pSurface->typeGL = GL_HALF_FLOAT;
1892	AssertTestFmt(SVGA3D_RG_S10E5);
1893	#endif
1894	break;
1895	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1896	pSurface->internalFormatGL = GL_RG32F;
1897	pSurface->formatGL = GL_RG;
1898	pSurface->typeGL = GL_FLOAT;
1899	break;
1900
1901	/*
1902	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1903	* the most efficient format to use when creating new surfaces
1904	* expressly for index or vertex data.
1905	*/
1906	case SVGA3D_BUFFER:
1907	pSurface->internalFormatGL = -1;
1908	pSurface->formatGL = -1;
1909	pSurface->typeGL = -1;
1910	break;
1911
1912	#if 0
1913	return D3DFMT_UNKNOWN;
1914
1915	case SVGA3D_V16U16:
1916	return D3DFMT_V16U16;
1917	#endif
1918
1919	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1920	pSurface->internalFormatGL = GL_RG16;
1921	pSurface->formatGL = GL_RG;
1922	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1923	pSurface->typeGL = GL_UNSIGNED_INT;
1924	#else
1925	pSurface->typeGL = GL_UNSIGNED_SHORT;
1926	AssertTestFmt(SVGA3D_G16R16);
1927	#endif
1928	break;
1929
1930	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1931	pSurface->internalFormatGL = GL_RGBA16;
1932	pSurface->formatGL = GL_RGBA;
1933	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1934	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1935	#else
1936	pSurface->typeGL = GL_UNSIGNED_SHORT;
1937	AssertTestFmt(SVGA3D_A16B16G16R16);
1938	#endif
1939	break;
1940
1941	case SVGA3D_R8G8B8A8_SNORM:
1942	pSurface->internalFormatGL = GL_RGB8;
1943	pSurface->formatGL = GL_BGRA;
1944	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1945	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
1946	break;
1947	case SVGA3D_R16G16_UNORM:
1948	pSurface->internalFormatGL = GL_RG16;
1949	pSurface->formatGL = GL_RG;
1950	pSurface->typeGL = GL_UNSIGNED_SHORT;
1951	AssertTestFmt(SVGA3D_R16G16_UNORM);
1952	break;
1953
1954	/* Packed Video formats */
1955	case SVGA3D_UYVY:
1956	case SVGA3D_YUY2:
1957	/* Use a BRGA texture to hold the data and convert it to an actual BGRA. */
1958	pSurface->fEmulated = true;
1959	pSurface->internalFormatGL = GL_RGBA8;
1960	pSurface->formatGL = GL_BGRA;
1961	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1962	pSurface->cbBlockGL = 4 * pSurface->cxBlock * pSurface->cyBlock;
1963	break;
1964
1965	#if 0
1966	/* Planar video formats */
1967	case SVGA3D_NV12:
1968	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
1969
1970	/* Video format with alpha */
1971	case SVGA3D_FORMAT_DEAD2: /* Old SVGA3D_AYUV */
1972
1973	case SVGA3D_ATI1:
1974	case SVGA3D_ATI2:
1975	/* Unknown; only in DX10 & 11 */
1976	break;
1977	#endif
1978	default:
1979	AssertMsgFailed(("Unsupported format %d\n", format));
1980	break;
1981	}
1982	#undef AssertTestFmt
1983	}
1984
1985
1986	#if 0
1987	/**
1988	* Convert SVGA multi sample count value to its D3D equivalent
1989	*/
1990	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
1991	{
1992	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
1993	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
1994
1995	if (multisampleCount > 16)
1996	return D3DMULTISAMPLE_NONE;
1997
1998	/** @todo exact same mapping as d3d? */
1999	return (D3DMULTISAMPLE_TYPE)multisampleCount;
2000	}
2001	#endif
2002
2003	/**
2004	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
2005	*
2006	* @param pThisCC The device state.
2007	* @param fClearCOTableEntry Not relevant for this backend.
2008	* @param pSurface The surface being destroyed.
2009	*/
2010	static DECLCALLBACK(void) vmsvga3dBackSurfaceDestroy(PVGASTATECC pThisCC, bool fClearCOTableEntry, PVMSVGA3DSURFACE pSurface)
2011	{
2012	RT_NOREF(fClearCOTableEntry);
2013
2014	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2015	AssertReturnVoid(pState);
2016
2017	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2018	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2019
2020	switch (pSurface->enmOGLResType)
2021	{
2022	case VMSVGA3D_OGLRESTYPE_BUFFER:
2023	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
2024	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
2025	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2026	break;
2027
2028	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2029	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
2030	glDeleteTextures(1, &pSurface->oglId.texture);
2031	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2032	if (pSurface->fEmulated)
2033	{
2034	if (pSurface->idEmulated)
2035	{
2036	glDeleteTextures(1, &pSurface->idEmulated);
2037	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2038	}
2039	}
2040	else
2041	{
2042	Assert(!pSurface->idEmulated);
2043	}
2044	break;
2045
2046	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
2047	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
2048	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
2049	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2050	break;
2051
2052	default:
2053	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
2054	("hint=%#x, type=%d\n",
2055	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
2056	break;
2057	}
2058	}
2059
2060
2061	static DECLCALLBACK(void) vmsvga3dBackSurfaceInvalidateImage(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface, uint32_t uFace, uint32_t uMipmap)
2062	{
2063	RT_NOREF(pThisCC, pSurface, uFace, uMipmap);
2064	}
2065
2066
2067	static DECLCALLBACK(int) vmsvga3dBackSurfaceCopy(PVGASTATECC pThisCC, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src,
2068	uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
2069	{
2070	int rc;
2071
2072	LogFunc(("Copy %d boxes from sid=%u face=%u mipmap=%u to sid=%u face=%u mipmap=%u\n",
2073	cCopyBoxes, src.sid, src.face, src.mipmap, dest.sid, dest.face, dest.mipmap));
2074
2075	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2076	AssertReturn(pState, VERR_INVALID_STATE);
2077
2078	PVMSVGA3DSURFACE pSurfaceSrc;
2079	rc = vmsvga3dSurfaceFromSid(pState, src.sid, &pSurfaceSrc);
2080	AssertRCReturn(rc, rc);
2081
2082	PVMSVGA3DSURFACE pSurfaceDst;
2083	rc = vmsvga3dSurfaceFromSid(pState, dest.sid, &pSurfaceDst);
2084	AssertRCReturn(rc, rc);
2085
2086	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceSrc))
2087	{
2088	/* The source surface is still in memory. */
2089	PVMSVGA3DMIPMAPLEVEL pMipmapLevelSrc;
2090	rc = vmsvga3dMipmapLevel(pSurfaceSrc, src.face, src.mipmap, &pMipmapLevelSrc);
2091	AssertRCReturn(rc, rc);
2092
2093	PVMSVGA3DMIPMAPLEVEL pMipmapLevelDst;
2094	rc = vmsvga3dMipmapLevel(pSurfaceDst, dest.face, dest.mipmap, &pMipmapLevelDst);
2095	AssertRCReturn(rc, rc);
2096
2097	/* The copy operation is performed on the shared context. */
2098	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2099	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2100
2101	/* Use glTexSubImage to upload the data to the destination texture.
2102	* The latter must be an OpenGL texture.
2103	*/
2104	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceDst))
2105	{
2106	LogFunc(("dest sid=%u type=0x%x format=%d -> create texture\n", dest.sid, pSurfaceDst->f.s.surface1Flags, pSurfaceDst->format));
2107	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, pContext->id, pSurfaceDst);
2108	AssertRCReturn(rc, rc);
2109	}
2110
2111	GLenum target;
2112	if (pSurfaceDst->targetGL == GL_TEXTURE_CUBE_MAP)
2113	target = vmsvga3dCubemapFaceFromIndex(dest.face);
2114	else
2115	{
2116	AssertMsg(pSurfaceDst->targetGL == GL_TEXTURE_2D, ("Test %#x\n", pSurfaceDst->targetGL));
2117	target = pSurfaceDst->targetGL;
2118	}
2119
2120	/* Save the unpacking parameters and set what we need here. */
2121	VMSVGAPACKPARAMS SavedParams;
2122	vmsvga3dOglSetUnpackParams(pState, pContext,
2123	pMipmapLevelSrc->mipmapSize.width,
2124	target == GL_TEXTURE_3D ? pMipmapLevelSrc->mipmapSize.height : 0,
2125	&SavedParams);
2126
2127	glBindTexture(pSurfaceDst->targetGL, pSurfaceDst->oglId.texture);
2128	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2129
2130	for (uint32_t i = 0; i < cCopyBoxes; ++i)
2131	{
2132	SVGA3dCopyBox clipBox = pBox[i];
2133	vmsvgaR3ClipCopyBox(&pMipmapLevelSrc->mipmapSize, &pMipmapLevelDst->mipmapSize, &clipBox);
2134	if ( !clipBox.w
2135	\|\| !clipBox.h
2136	\|\| !clipBox.d)
2137	{
2138	LogFunc(("Skipped empty box.\n"));
2139	continue;
2140	}
2141
2142	LogFunc(("copy box %d,%d,%d %dx%d to %d,%d,%d\n",
2143	clipBox.srcx, clipBox.srcy, clipBox.srcz, clipBox.w, clipBox.h, clipBox.x, clipBox.y, clipBox.z));
2144
2145	uint32_t const u32BlockX = clipBox.srcx / pSurfaceSrc->cxBlock;
2146	uint32_t const u32BlockY = clipBox.srcy / pSurfaceSrc->cyBlock;
2147	uint32_t const u32BlockZ = clipBox.srcz;
2148	Assert(u32BlockX * pSurfaceSrc->cxBlock == clipBox.srcx);
2149	Assert(u32BlockY * pSurfaceSrc->cyBlock == clipBox.srcy);
2150
2151	uint8_t const pSrcBits = (uint8_t )pMipmapLevelSrc->pSurfaceData
2152	+ pMipmapLevelSrc->cbSurfacePlane * u32BlockZ
2153	+ pMipmapLevelSrc->cbSurfacePitch * u32BlockY
2154	+ pSurfaceSrc->cbBlock * u32BlockX;
2155
2156	if (target == GL_TEXTURE_3D)
2157	{
2158	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2159	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2160	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2161	{
2162	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2163	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2164	uint32_t const imageSize = cBlocksX * cBlocksY * clipBox.d * pSurfaceSrc->cbBlock;
2165	pState->ext.glCompressedTexSubImage3D(target, dest.mipmap,
2166	clipBox.x, clipBox.y, clipBox.z,
2167	clipBox.w, clipBox.h, clipBox.d,
2168	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2169	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2170	}
2171	else
2172	{
2173	pState->ext.glTexSubImage3D(target, dest.mipmap,
2174	clipBox.x, clipBox.y, clipBox.z,
2175	clipBox.w, clipBox.h, clipBox.d,
2176	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2177	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2178	}
2179	}
2180	else
2181	{
2182	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2183	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2184	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2185	{
2186	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2187	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2188	uint32_t const imageSize = cBlocksX * cBlocksY * pSurfaceSrc->cbBlock;
2189	pState->ext.glCompressedTexSubImage2D(target, dest.mipmap,
2190	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2191	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2192	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2193	}
2194	else
2195	{
2196	glTexSubImage2D(target, dest.mipmap,
2197	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2198	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2199	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2200	}
2201	}
2202	}
2203
2204	glBindTexture(pSurfaceDst->targetGL, 0);
2205	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2206
2207	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2208
2209	return VINF_SUCCESS;
2210	}
2211
2212	PVGASTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVGASTATE);
2213	for (uint32_t i = 0; i < cCopyBoxes; i++)
2214	{
2215	SVGA3dBox destBox, srcBox;
2216
2217	srcBox.x = pBox[i].srcx;
2218	srcBox.y = pBox[i].srcy;
2219	srcBox.z = pBox[i].srcz;
2220	srcBox.w = pBox[i].w;
2221	srcBox.h = pBox[i].h;
2222	srcBox.d = pBox[i].d;
2223
2224	destBox.x = pBox[i].x;
2225	destBox.y = pBox[i].y;
2226	destBox.z = pBox[i].z;
2227	destBox.w = pBox[i].w;
2228	destBox.h = pBox[i].h;
2229	destBox.d = pBox[i].d;
2230
2231	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2232	rc = vmsvga3dSurfaceStretchBlt(pThis, pThisCC, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2233	AssertRCReturn(rc, rc);
2234	}
2235	return VINF_SUCCESS;
2236	}
2237
2238
2239	/**
2240	* Saves texture unpacking parameters and loads the specified ones.
2241	*
2242	* @param pState The VMSVGA3D state structure.
2243	* @param pContext The active context.
2244	* @param cxRow The number of pixels in a row. 0 for the entire width.
2245	* @param cyImage The height of the image in pixels. 0 for the entire height.
2246	* @param pSave Where to save stuff.
2247	*/
2248	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, GLint cxRow, GLint cyImage,
2249	PVMSVGAPACKPARAMS pSave)
2250	{
2251	RT_NOREF(pState);
2252
2253	/*
2254	* Save (ignore errors, setting the defaults we want and avoids restore).
2255	*/
2256	pSave->iAlignment = 1;
2257	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2258	pSave->cxRow = 0;
2259	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2260	pSave->cyImage = 0;
2261	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage), pState, pContext);
2262
2263	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2264	pSave->fSwapBytes = GL_FALSE;
2265	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2266	Assert(pSave->fSwapBytes == GL_FALSE);
2267
2268	pSave->fLsbFirst = GL_FALSE;
2269	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2270	Assert(pSave->fLsbFirst == GL_FALSE);
2271
2272	pSave->cSkipRows = 0;
2273	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2274	Assert(pSave->cSkipRows == 0);
2275
2276	pSave->cSkipPixels = 0;
2277	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2278	Assert(pSave->cSkipPixels == 0);
2279
2280	pSave->cSkipImages = 0;
2281	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2282	Assert(pSave->cSkipImages == 0);
2283
2284	VMSVGA3D_CLEAR_GL_ERRORS();
2285	#endif
2286
2287	/*
2288	* Setup unpack.
2289	*
2290	* Note! We use 1 as alignment here because we currently don't do any
2291	* aligning of line pitches anywhere.
2292	*/
2293	pSave->fChanged = 0;
2294	if (pSave->iAlignment != 1)
2295	{
2296	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2297	pSave->fChanged \|= VMSVGAPACKPARAMS_ALIGNMENT;
2298	}
2299	if (pSave->cxRow != cxRow)
2300	{
2301	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, cxRow), pState, pContext);
2302	pSave->fChanged \|= VMSVGAPACKPARAMS_ROW_LENGTH;
2303	}
2304	if (pSave->cyImage != cyImage)
2305	{
2306	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, cyImage), pState, pContext);
2307	pSave->fChanged \|= VMSVGAPACKPARAMS_IMAGE_HEIGHT;
2308	}
2309	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2310	if (pSave->fSwapBytes != 0)
2311	{
2312	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2313	pSave->fChanged \|= VMSVGAPACKPARAMS_SWAP_BYTES;
2314	}
2315	if (pSave->fLsbFirst != 0)
2316	{
2317	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2318	pSave->fChanged \|= VMSVGAPACKPARAMS_LSB_FIRST;
2319	}
2320	if (pSave->cSkipRows != 0)
2321	{
2322	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2323	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_ROWS;
2324	}
2325	if (pSave->cSkipPixels != 0)
2326	{
2327	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2328	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_PIXELS;
2329	}
2330	if (pSave->cSkipImages != 0)
2331	{
2332	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2333	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_IMAGES;
2334	}
2335	#endif
2336	}
2337
2338
2339	/**
2340	* Restores texture unpacking parameters.
2341	*
2342	* @param pState The VMSVGA3D state structure.
2343	* @param pContext The active context.
2344	* @param pSave Where stuff was saved.
2345	*/
2346	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext,
2347	PCVMSVGAPACKPARAMS pSave)
2348	{
2349	RT_NOREF(pState);
2350
2351	if (pSave->fChanged & VMSVGAPACKPARAMS_ALIGNMENT)
2352	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2353	if (pSave->fChanged & VMSVGAPACKPARAMS_ROW_LENGTH)
2354	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2355	if (pSave->fChanged & VMSVGAPACKPARAMS_IMAGE_HEIGHT)
2356	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2357	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2358	if (pSave->fChanged & VMSVGAPACKPARAMS_SWAP_BYTES)
2359	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2360	if (pSave->fChanged & VMSVGAPACKPARAMS_LSB_FIRST)
2361	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2362	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_ROWS)
2363	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2364	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_PIXELS)
2365	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2366	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_IMAGES)
2367	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2368	#endif
2369	}
2370
2371	/**
2372	* Create D3D/OpenGL texture object for the specified surface.
2373	*
2374	* Surfaces are created when needed.
2375	*
2376	* @param pThisCC The device context.
2377	* @param pContext The context.
2378	* @param idAssociatedContext Probably the same as pContext->id.
2379	* @param pSurface The surface to create the texture for.
2380	*/
2381	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2382	PVMSVGA3DSURFACE pSurface)
2383	{
2384	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2385
2386	RT_NOREF(idAssociatedContext);
2387
2388	LogFunc(("sid=%u\n", pSurface->id));
2389
2390	uint32_t const numMipLevels = pSurface->cLevels;
2391
2392	/* Fugure out what kind of texture we are creating. */
2393	GLenum binding;
2394	GLenum target;
2395	if (pSurface->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
2396	{
2397	Assert(pSurface->cFaces == 6);
2398
2399	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2400	target = GL_TEXTURE_CUBE_MAP;
2401	}
2402	else
2403	{
2404	if (pSurface->paMipmapLevels[0].mipmapSize.depth > 1)
2405	{
2406	binding = GL_TEXTURE_BINDING_3D;
2407	target = GL_TEXTURE_3D;
2408	}
2409	else
2410	{
2411	Assert(pSurface->cFaces == 1);
2412
2413	binding = GL_TEXTURE_BINDING_2D;
2414	target = GL_TEXTURE_2D;
2415	}
2416	}
2417
2418	/* All textures are created in the SharedCtx. */
2419	uint32_t idPrevCtx = pState->idActiveContext;
2420	pContext = &pState->SharedCtx;
2421	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2422
2423	glGenTextures(1, &pSurface->oglId.texture);
2424	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2425	if (pSurface->fEmulated)
2426	{
2427	glGenTextures(1, &pSurface->idEmulated);
2428	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2429	}
2430	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2431
2432	GLint activeTexture = 0;
2433	glGetIntegerv(binding, &activeTexture);
2434	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2435
2436	/* Must bind texture to the current context in order to change it. */
2437	glBindTexture(target, pSurface->oglId.texture);
2438	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2439
2440	/* Set the unpacking parameters. */
2441	VMSVGAPACKPARAMS SavedParams;
2442	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2443
2444	/** @todo Set the mip map generation filter settings. */
2445
2446	/* Set the mipmap base and max level parameters. */
2447	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2448	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2449	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->cLevels - 1);
2450	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2451
2452	if (pSurface->fDirty)
2453	LogFunc(("sync dirty texture\n"));
2454
2455	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2456	if (target == GL_TEXTURE_3D)
2457	{
2458	for (uint32_t i = 0; i < numMipLevels; ++i)
2459	{
2460	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2461	* exposing random host memory to the guest and helps a with the fedora 21 surface
2462	* corruption issues (launchpad, background, search field, login).
2463	*/
2464	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2465
2466	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2467	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2468
2469	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2470	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2471	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2472	{
2473	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2474	i,
2475	pSurface->internalFormatGL,
2476	pMipLevel->mipmapSize.width,
2477	pMipLevel->mipmapSize.height,
2478	pMipLevel->mipmapSize.depth,
2479	0,
2480	pMipLevel->cbSurface,
2481	pMipLevel->pSurfaceData);
2482	}
2483	else
2484	{
2485	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2486	i,
2487	pSurface->internalFormatGL,
2488	pMipLevel->mipmapSize.width,
2489	pMipLevel->mipmapSize.height,
2490	pMipLevel->mipmapSize.depth,
2491	0, /* border */
2492	pSurface->formatGL,
2493	pSurface->typeGL,
2494	pMipLevel->pSurfaceData);
2495	}
2496	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2497
2498	pMipLevel->fDirty = false;
2499	}
2500	}
2501	else if (target == GL_TEXTURE_CUBE_MAP)
2502	{
2503	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2504	{
2505	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2506
2507	for (uint32_t i = 0; i < numMipLevels; ++i)
2508	{
2509	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[iFace * numMipLevels + i];
2510	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2511	Assert(pMipLevel->mipmapSize.depth == 1);
2512
2513	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2514	iFace, i, pMipLevel->fDirty));
2515
2516	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2517	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2518	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2519	{
2520	pState->ext.glCompressedTexImage2D(Face,
2521	i,
2522	pSurface->internalFormatGL,
2523	pMipLevel->mipmapSize.width,
2524	pMipLevel->mipmapSize.height,
2525	0,
2526	pMipLevel->cbSurface,
2527	pMipLevel->pSurfaceData);
2528	}
2529	else
2530	{
2531	glTexImage2D(Face,
2532	i,
2533	pSurface->internalFormatGL,
2534	pMipLevel->mipmapSize.width,
2535	pMipLevel->mipmapSize.height,
2536	0,
2537	pSurface->formatGL,
2538	pSurface->typeGL,
2539	pMipLevel->pSurfaceData);
2540	}
2541	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2542
2543	pMipLevel->fDirty = false;
2544	}
2545	}
2546	}
2547	else if (target == GL_TEXTURE_2D)
2548	{
2549	for (uint32_t i = 0; i < numMipLevels; ++i)
2550	{
2551	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2552	* exposing random host memory to the guest and helps a with the fedora 21 surface
2553	* corruption issues (launchpad, background, search field, login).
2554	*/
2555	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2556	Assert(pMipLevel->mipmapSize.depth == 1);
2557
2558	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2559	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2560
2561	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2562	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2563	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2564	{
2565	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2566	i,
2567	pSurface->internalFormatGL,
2568	pMipLevel->mipmapSize.width,
2569	pMipLevel->mipmapSize.height,
2570	0,
2571	pMipLevel->cbSurface,
2572	pMipLevel->pSurfaceData);
2573	}
2574	else
2575	{
2576	glTexImage2D(GL_TEXTURE_2D,
2577	i,
2578	pSurface->internalFormatGL,
2579	pMipLevel->mipmapSize.width,
2580	pMipLevel->mipmapSize.height,
2581	0,
2582	pSurface->formatGL,
2583	pSurface->typeGL,
2584	NULL);
2585	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2586
2587	if (pSurface->fEmulated)
2588	{
2589	/* Bind the emulated texture and init it. */
2590	glBindTexture(GL_TEXTURE_2D, pSurface->idEmulated);
2591	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2592
2593	glTexImage2D(GL_TEXTURE_2D,
2594	i,
2595	pSurface->internalFormatGL,
2596	pMipLevel->mipmapSize.width,
2597	pMipLevel->mipmapSize.height,
2598	0,
2599	pSurface->formatGL,
2600	pSurface->typeGL,
2601	NULL);
2602	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2603	}
2604
2605	/* Fetch texture data: either to the actual or to the emulated texture.
2606	* The pSurfaceData buffer may be smaller than the entire texture
2607	* for emulated formats, in which case only part of the texture is synched.
2608	*/
2609	uint32_t cBlocksX = pMipLevel->mipmapSize.width / pSurface->cxBlock;
2610	uint32_t cBlocksY = pMipLevel->mipmapSize.height / pSurface->cyBlock;
2611	glTexSubImage2D(GL_TEXTURE_2D,
2612	i,
2613	0,
2614	0,
2615	cBlocksX,
2616	cBlocksY,
2617	pSurface->formatGL,
2618	pSurface->typeGL,
2619	pMipLevel->pSurfaceData);
2620	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2621
2622	if (pSurface->fEmulated)
2623	{
2624	/* Update the actual texture using the format converter. */
2625	FormatConvUpdateTexture(pState, pContext, pSurface, i);
2626
2627	/* Rebind the actual texture. */
2628	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
2629	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2630	}
2631	}
2632	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2633
2634	pMipLevel->fDirty = false;
2635	}
2636	}
2637
2638	pSurface->fDirty = false;
2639
2640	/* Restore unpacking parameters. */
2641	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2642
2643	/* Restore the old active texture. */
2644	glBindTexture(target, activeTexture);
2645	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2646
2647	pSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2648	pSurface->targetGL = target;
2649	pSurface->bindingGL = binding;
2650
2651	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2652	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2653	return VINF_SUCCESS;
2654	}
2655
2656
2657	/**
2658	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2659	*
2660	* @returns VBox status code.
2661	* @param pThis The VGA device instance.
2662	* @param pState The VMSVGA3d state.
2663	* @param pDstSurface The destination host surface.
2664	* @param uDstFace The destination face (valid).
2665	* @param uDstMipmap The destination mipmap level (valid).
2666	* @param pDstBox The destination box.
2667	* @param pSrcSurface The source host surface.
2668	* @param uSrcFace The destination face (valid).
2669	* @param uSrcMipmap The source mimap level (valid).
2670	* @param pSrcBox The source box.
2671	* @param enmMode The strecht blt mode .
2672	* @param pContext The VMSVGA3d context (already current for OGL).
2673	*/
2674	static DECLCALLBACK(int) vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2675	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2676	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2677	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2678	{
2679	RT_NOREF(pThis);
2680
2681	AssertReturn( RT_BOOL(pSrcSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2682	== RT_BOOL(pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2683
2684	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2685	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2686	if (pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2687	{
2688	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2689	glAttachment = GL_DEPTH_ATTACHMENT;
2690	glMask = GL_DEPTH_BUFFER_BIT;
2691	}
2692
2693	/* Activate the read and draw framebuffer objects. */
2694	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2695	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2696	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2697	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2698
2699	/* Bind the source and destination objects to the right place. */
2700	GLenum textarget;
2701	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2702	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2703	else
2704	{
2705	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2706	textarget = GL_TEXTURE_2D;
2707	}
2708	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2709	pSrcSurface->oglId.texture, uSrcMipmap);
2710	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2711
2712	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2713	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2714	else
2715	{
2716	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2717	textarget = GL_TEXTURE_2D;
2718	}
2719	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2720	pDstSurface->oglId.texture, uDstMipmap);
2721	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2722
2723	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2724	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2725	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2726	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2727	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2728
2729	pState->ext.glBlitFramebuffer(pSrcBox->x,
2730	pSrcBox->y,
2731	pSrcBox->x + pSrcBox->w, /* exclusive. */
2732	pSrcBox->y + pSrcBox->h,
2733	pDstBox->x,
2734	pDstBox->y,
2735	pDstBox->x + pDstBox->w, /* exclusive. */
2736	pDstBox->y + pDstBox->h,
2737	glMask,
2738	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2739	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2740
2741	/* Reset the frame buffer association */
2742	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2743	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2744
2745	return VINF_SUCCESS;
2746	}
2747
2748	/**
2749	* Save texture packing parameters and loads those appropriate for the given
2750	* surface.
2751	*
2752	* @param pState The VMSVGA3D state structure.
2753	* @param pContext The active context.
2754	* @param pSurface The surface.
2755	* @param pSave Where to save stuff.
2756	*/
2757	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2758	PVMSVGAPACKPARAMS pSave)
2759	{
2760	RT_NOREF(pState);
2761	/*
2762	* Save (ignore errors, setting the defaults we want and avoids restore).
2763	*/
2764	pSave->iAlignment = 1;
2765	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2766	pSave->cxRow = 0;
2767	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2768
2769	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2770	pSave->cyImage = 0;
2771	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2772	Assert(pSave->cyImage == 0);
2773
2774	pSave->fSwapBytes = GL_FALSE;
2775	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2776	Assert(pSave->fSwapBytes == GL_FALSE);
2777
2778	pSave->fLsbFirst = GL_FALSE;
2779	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2780	Assert(pSave->fLsbFirst == GL_FALSE);
2781
2782	pSave->cSkipRows = 0;
2783	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2784	Assert(pSave->cSkipRows == 0);
2785
2786	pSave->cSkipPixels = 0;
2787	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2788	Assert(pSave->cSkipPixels == 0);
2789
2790	pSave->cSkipImages = 0;
2791	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2792	Assert(pSave->cSkipImages == 0);
2793
2794	VMSVGA3D_CLEAR_GL_ERRORS();
2795	#endif
2796
2797	/*
2798	* Setup unpack.
2799	*
2800	* Note! We use 1 as alignment here because we currently don't do any
2801	* aligning of line pitches anywhere.
2802	*/
2803	NOREF(pSurface);
2804	if (pSave->iAlignment != 1)
2805	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2806	if (pSave->cxRow != 0)
2807	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2808	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2809	if (pSave->cyImage != 0)
2810	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2811	if (pSave->fSwapBytes != 0)
2812	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2813	if (pSave->fLsbFirst != 0)
2814	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2815	if (pSave->cSkipRows != 0)
2816	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2817	if (pSave->cSkipPixels != 0)
2818	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2819	if (pSave->cSkipImages != 0)
2820	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2821	#endif
2822	}
2823
2824
2825	/**
2826	* Restores texture packing parameters.
2827	*
2828	* @param pState The VMSVGA3D state structure.
2829	* @param pContext The active context.
2830	* @param pSurface The surface.
2831	* @param pSave Where stuff was saved.
2832	*/
2833	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2834	PCVMSVGAPACKPARAMS pSave)
2835	{
2836	RT_NOREF(pState, pSurface);
2837	if (pSave->iAlignment != 1)
2838	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2839	if (pSave->cxRow != 0)
2840	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2841	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2842	if (pSave->cyImage != 0)
2843	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2844	if (pSave->fSwapBytes != 0)
2845	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2846	if (pSave->fLsbFirst != 0)
2847	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2848	if (pSave->cSkipRows != 0)
2849	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2850	if (pSave->cSkipPixels != 0)
2851	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2852	if (pSave->cSkipImages != 0)
2853	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2854	#endif
2855	}
2856
2857
2858	/**
2859	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2860	*
2861	* @returns Failure status code or @a rc.
2862	* @param pThis The shared VGA/VMSVGA instance data.
2863	* @param pThisCC The VGA/VMSVGA state for ring-3.
2864	* @param pState The VMSVGA3d state.
2865	* @param pSurface The host surface.
2866	* @param pMipLevel Mipmap level. The caller knows it already.
2867	* @param uHostFace The host face (valid).
2868	* @param uHostMipmap The host mipmap level (valid).
2869	* @param GuestPtr The guest pointer.
2870	* @param cbGuestPitch The guest pitch.
2871	* @param transfer The transfer direction.
2872	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2873	* @param pContext The context (for OpenGL).
2874	* @param rc The current rc for all boxes.
2875	* @param iBox The current box number (for Direct 3D).
2876	*/
2877	static DECLCALLBACK(int) vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVGASTATECC pThisCC, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2878	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2879	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2880	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2881	{
2882	RT_NOREF(iBox);
2883
2884	switch (pSurface->enmOGLResType)
2885	{
2886	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2887	{
2888	uint32_t cbSurfacePitch;
2889	uint8_t *pDoubleBuffer;
2890	uint64_t offHst;
2891
2892	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2893	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2894	uint32_t const u32HostZ = pBox->z;
2895	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2896	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2897
2898	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2899	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2900	uint32_t const u32GuestZ = pBox->srcz / pSurface->cyBlock;
2901	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2902	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2903
2904	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2905	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2906	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2907
2908	GLenum texImageTarget;
2909	if (pSurface->targetGL == GL_TEXTURE_3D)
2910	{
2911	texImageTarget = GL_TEXTURE_3D;
2912	}
2913	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2914	{
2915	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2916	}
2917	else
2918	{
2919	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2920	texImageTarget = GL_TEXTURE_2D;
2921	}
2922
2923	/* The buffer must be large enough to hold entire texture in the OpenGL format. */
2924	pDoubleBuffer = (uint8_t )RTMemAlloc(pSurface->cbBlockGL pMipLevel->cBlocks);
2925	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2926
2927	if (transfer == SVGA3D_READ_HOST_VRAM)
2928	{
2929	/* Read the entire texture to the double buffer. */
2930	GLint activeTexture;
2931
2932	/* Must bind texture to the current context in order to read it. */
2933	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2934	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2935
2936	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2937	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2938
2939	if (pSurface->fEmulated)
2940	{
2941	FormatConvReadTexture(pState, pContext, pSurface, uHostMipmap);
2942	}
2943
2944	/* Set row length and alignment of the input data. */
2945	VMSVGAPACKPARAMS SavedParams;
2946	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2947
2948	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2949	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2950	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2951	{
2952	pState->ext.glGetCompressedTexImage(texImageTarget, uHostMipmap, pDoubleBuffer);
2953	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2954	}
2955	else
2956	{
2957	glGetTexImage(texImageTarget, uHostMipmap, pSurface->formatGL, pSurface->typeGL, pDoubleBuffer);
2958	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2959	}
2960
2961	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
2962
2963	/* Restore the old active texture. */
2964	glBindTexture(pSurface->targetGL, activeTexture);
2965	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2966
2967	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch + u32HostZ * pMipLevel->cbSurfacePlane;
2968	cbSurfacePitch = pMipLevel->cbSurfacePitch;
2969	}
2970	else
2971	{
2972	/* The buffer will contain only the copied rectangle. */
2973	offHst = 0;
2974	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
2975	}
2976
2977	uint64_t offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch + u32GuestZ * cbGuestPitch * pMipLevel->mipmapSize.height;
2978
2979	for (uint32_t iPlane = 0; iPlane < pBox->d; ++iPlane)
2980	{
2981	AssertBreak(offHst < UINT32_MAX);
2982	AssertBreak(offGst < UINT32_MAX);
2983
2984	rc = vmsvgaR3GmrTransfer(pThis,
2985	pThisCC,
2986	transfer,
2987	pDoubleBuffer,
2988	pMipLevel->cbSurface,
2989	(uint32_t)offHst,
2990	cbSurfacePitch,
2991	GuestPtr,
2992	(uint32_t)offGst,
2993	cbGuestPitch,
2994	cBlocksX * pSurface->cbBlock,
2995	cBlocksY);
2996	AssertRC(rc);
2997
2998	offHst += pMipLevel->cbSurfacePlane;
2999	offGst += pMipLevel->mipmapSize.height * cbGuestPitch;
3000	}
3001
3002	/* Update the opengl surface data. */
3003	if (transfer == SVGA3D_WRITE_HOST_VRAM)
3004	{
3005	GLint activeTexture = 0;
3006	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3007	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3008
3009	/* Must bind texture to the current context in order to change it. */
3010	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
3011	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3012
3013	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
3014
3015	/* Set row length and alignment of the input data. */
3016	/* We do not need to set ROW_LENGTH to w here, because the image in pDoubleBuffer is tightly packed. */
3017	VMSVGAPACKPARAMS SavedParams;
3018	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
3019
3020	if (texImageTarget == GL_TEXTURE_3D)
3021	{
3022	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3023	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3024	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3025	{
3026	pState->ext.glCompressedTexSubImage3D(texImageTarget,
3027	uHostMipmap,
3028	pBox->x,
3029	pBox->y,
3030	pBox->z,
3031	pBox->w,
3032	pBox->h,
3033	pBox->d,
3034	pSurface->internalFormatGL,
3035	cbSurfacePitch * cBlocksY * pBox->d,
3036	pDoubleBuffer);
3037	}
3038	else
3039	{
3040	pState->ext.glTexSubImage3D(texImageTarget,
3041	uHostMipmap,
3042	u32HostBlockX,
3043	u32HostBlockY,
3044	pBox->z,
3045	cBlocksX,
3046	cBlocksY,
3047	pBox->d,
3048	pSurface->formatGL,
3049	pSurface->typeGL,
3050	pDoubleBuffer);
3051	}
3052	}
3053	else
3054	{
3055	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3056	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3057	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3058	{
3059	pState->ext.glCompressedTexSubImage2D(texImageTarget,
3060	uHostMipmap,
3061	pBox->x,
3062	pBox->y,
3063	pBox->w,
3064	pBox->h,
3065	pSurface->internalFormatGL,
3066	cbSurfacePitch * cBlocksY,
3067	pDoubleBuffer);
3068	}
3069	else
3070	{
3071	glTexSubImage2D(texImageTarget,
3072	uHostMipmap,
3073	u32HostBlockX,
3074	u32HostBlockY,
3075	cBlocksX,
3076	cBlocksY,
3077	pSurface->formatGL,
3078	pSurface->typeGL,
3079	pDoubleBuffer);
3080	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3081
3082	if (pSurface->fEmulated)
3083	{
3084	/* Convert the texture to the actual texture if necessary */
3085	FormatConvUpdateTexture(pState, pContext, pSurface, uHostMipmap);
3086	}
3087	}
3088	}
3089	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3090
3091	/* Restore old values. */
3092	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
3093
3094	/* Restore the old active texture. */
3095	glBindTexture(pSurface->targetGL, activeTexture);
3096	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3097	}
3098
3099	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
3100
3101	/* Free the double buffer. */
3102	RTMemFree(pDoubleBuffer);
3103	break;
3104	}
3105
3106	case VMSVGA3D_OGLRESTYPE_BUFFER:
3107	{
3108	/* Buffers are uncompressed. */
3109	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
3110
3111	/* Caller already clipped pBox and buffers are 1-dimensional. */
3112	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
3113
3114	VMSVGA3D_CLEAR_GL_ERRORS();
3115	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
3116	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
3117	{
3118	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
3119	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
3120	if (RT_LIKELY(pbData != NULL))
3121	{
3122	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
3123	GLint cbStrictBufSize;
3124	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
3125	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
3126	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
3127	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
3128	#endif
3129	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
3130	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
3131	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
3132	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
3133
3134	/* The caller already copied the data to the pMipLevel->pSurfaceData buffer, see VMSVGA3DSURFACE_NEEDS_DATA. */
3135	uint32_t const offHst = pBox->x * pSurface->cbBlock;
3136	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
3137
3138	memcpy(pbData + offHst, (uint8_t *)pMipLevel->pSurfaceData + offHst, cbWidth);
3139
3140	Log4(("Buffer updated at [0x%x;0x%x):\n%.Rhxd\n", offHst, offHst + cbWidth, cbWidth, (uint8_t )pbData + offHst));
3141
3142	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
3143	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3144	}
3145	else
3146	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
3147	}
3148	else
3149	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
3150	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
3151	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3152	break;
3153	}
3154
3155	default:
3156	AssertFailed();
3157	break;
3158	}
3159
3160	return rc;
3161	}
3162
3163	static DECLCALLBACK(int) vmsvga3dBackGenerateMipmaps(PVGASTATECC pThisCC, uint32_t sid, SVGA3dTextureFilter filter)
3164	{
3165	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3166	PVMSVGA3DSURFACE pSurface;
3167	int rc = VINF_SUCCESS;
3168	PVMSVGA3DCONTEXT pContext;
3169	uint32_t cid;
3170	GLint activeTexture = 0;
3171
3172	AssertReturn(pState, VERR_NO_MEMORY);
3173
3174	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
3175	AssertRCReturn(rc, rc);
3176
3177	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
3178	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
3179	pSurface->autogenFilter = filter;
3180
3181	LogFunc(("sid=%u filter=%d\n", sid, filter));
3182
3183	cid = SVGA3D_INVALID_ID;
3184	pContext = &pState->SharedCtx;
3185	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3186
3187	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
3188	{
3189	/* Unknown surface type; turn it into a texture. */
3190	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->f.s.surface1Flags, pSurface->format));
3191	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
3192	AssertRCReturn(rc, rc);
3193	}
3194	else
3195	{
3196	/** @todo new filter */
3197	AssertFailed();
3198	}
3199
3200	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3201	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3202
3203	/* Must bind texture to the current context in order to change it. */
3204	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
3205	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3206
3207	/* Generate the mip maps. */
3208	pState->ext.glGenerateMipmap(pSurface->targetGL);
3209	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3210
3211	/* Restore the old texture. */
3212	glBindTexture(pSurface->targetGL, activeTexture);
3213	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3214
3215	return VINF_SUCCESS;
3216	}
3217
3218
3219	#ifdef RT_OS_LINUX
3220	/**
3221	* X11 event handling thread.
3222	*
3223	* @returns VINF_SUCCESS (ignored)
3224	* @param hThreadSelf thread handle
3225	* @param pvUser pointer to pState structure
3226	*/
3227	static DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3228	{
3229	RT_NOREF(hThreadSelf);
3230	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3231	while (!pState->bTerminate)
3232	{
3233	while (XPending(pState->display) > 0)
3234	{
3235	XEvent event;
3236	XNextEvent(pState->display, &event);
3237
3238	switch (event.type)
3239	{
3240	default:
3241	break;
3242	}
3243	}
3244	/* sleep for 16ms to not burn too many cycles */
3245	RTThreadSleep(16);
3246	}
3247	return VINF_SUCCESS;
3248	}
3249	#endif // RT_OS_LINUX
3250
3251
3252	/**
3253	* Create a new 3d context
3254	*
3255	* @returns VBox status code.
3256	* @param pThisCC The VGA/VMSVGA state for ring-3.
3257	* @param cid Context id
3258	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3259	*/
3260	int vmsvga3dContextDefineOgl(PVGASTATECC pThisCC, uint32_t cid, uint32_t fFlags)
3261	{
3262	int rc;
3263	PVMSVGA3DCONTEXT pContext;
3264	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3265
3266	AssertReturn(pState, VERR_NO_MEMORY);
3267	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3268	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3269	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3270	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3271	#endif
3272
3273	Log(("vmsvga3dContextDefine id %x\n", cid));
3274
3275	if (cid == VMSVGA3D_SHARED_CTX_ID)
3276	pContext = &pState->SharedCtx;
3277	else
3278	{
3279	if (cid >= pState->cContexts)
3280	{
3281	/* Grow the array. */
3282	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3283	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3284	AssertReturn(pvNew, VERR_NO_MEMORY);
3285	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3286	while (pState->cContexts < cNew)
3287	{
3288	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3289	AssertReturn(pContext, VERR_NO_MEMORY);
3290	pContext->id = SVGA3D_INVALID_ID;
3291	pState->papContexts[pState->cContexts++] = pContext;
3292	}
3293	}
3294	/* If one already exists with this id, then destroy it now. */
3295	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3296	vmsvga3dBackContextDestroy(pThisCC, cid);
3297
3298	pContext = pState->papContexts[cid];
3299	}
3300
3301	/*
3302	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3303	*/
3304	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3305	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3306	{
3307	pSharedCtx = &pState->SharedCtx;
3308	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3309	{
3310	rc = vmsvga3dContextDefineOgl(pThisCC, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3311	AssertLogRelRCReturn(rc, rc);
3312
3313	/* Create resources which use the shared context. */
3314	vmsvga3dOnSharedContextDefine(pState);
3315	}
3316	}
3317
3318	/*
3319	* Initialize the context.
3320	*/
3321	memset(pContext, 0, sizeof(*pContext));
3322	pContext->id = cid;
3323	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3324	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3325
3326	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3327	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3328	pContext->idFramebuffer = OPENGL_INVALID_ID;
3329	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3330	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3331
3332	rc = ShaderContextCreate(&pContext->pShaderContext);
3333	AssertRCReturn(rc, rc);
3334
3335	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3336	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3337
3338	#ifdef RT_OS_WINDOWS
3339	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3340	* to present the rendered image. Rendered images from the guest will be copied to
3341	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3342	* system memory in the guest VRAM.
3343	*/
3344	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3345	AssertRCReturn(rc, rc);
3346
3347	pContext->hdc = GetDC(pContext->hwnd);
3348	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3349
3350	PIXELFORMATDESCRIPTOR pfd = {
3351	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3352	1, /* version number */
3353	PFD_DRAW_TO_WINDOW \| /* support window */
3354	PFD_SUPPORT_OPENGL, /* support OpenGL */
3355	PFD_TYPE_RGBA, /* RGBA type */
3356	24, /* 24-bit color depth */
3357	0, 0, 0, 0, 0, 0, /* color bits ignored */
3358	8, /* alpha buffer */
3359	0, /* shift bit ignored */
3360	0, /* no accumulation buffer */
3361	0, 0, 0, 0, /* accum bits ignored */
3362	16, /* set depth buffer */
3363	16, /* set stencil buffer */
3364	0, /* no auxiliary buffer */
3365	PFD_MAIN_PLANE, /* main layer */
3366	0, /* reserved */
3367	0, 0, 0 /* layer masks ignored */
3368	};
3369	int pixelFormat;
3370	BOOL ret;
3371
3372	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3373	/** @todo is this really necessary?? */
3374	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3375	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3376
3377	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3378	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3379
3380	pContext->hglrc = wglCreateContext(pContext->hdc);
3381	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3382
3383	if (pSharedCtx)
3384	{
3385	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3386	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3387	}
3388
3389	#elif defined(RT_OS_DARWIN)
3390	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3391
3392	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3393	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3394	NULL,
3395	4, 4,
3396	pShareContext, pContext->fOtherProfile);
3397
3398	#else
3399	if (pState->display == NULL)
3400	{
3401	/* get an X display and make sure we have glX 1.3 */
3402	pState->display = XOpenDisplay(0);
3403	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3404	int glxMajor, glxMinor;
3405	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3406	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3407	/* start our X event handling thread */
3408	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3409	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3410	}
3411
3412	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3413	/* Create a small 4x4 window required for GL context. */
3414	int attrib[] =
3415	{
3416	GLX_RGBA,
3417	GLX_RED_SIZE, 1,
3418	GLX_GREEN_SIZE, 1,
3419	GLX_BLUE_SIZE, 1,
3420	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3421	GLX_DOUBLEBUFFER,
3422	None
3423	};
3424	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3425	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3426	XSetWindowAttributes swa;
3427	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3428	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3429	swa.border_pixel = 0;
3430	swa.background_pixel = 0;
3431	swa.event_mask = StructureNotifyMask;
3432	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3433	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3434	0, 0, 4, 4,
3435	0, vi->depth, InputOutput,
3436	vi->visual, flags, &swa);
3437	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3438
3439	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3440
3441	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3442	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3443	XFree(vi);
3444	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3445	#endif
3446
3447	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3448
3449	/* NULL during the first PowerOn call. */
3450	if (pState->ext.glGenFramebuffers)
3451	{
3452	/* Create a framebuffer object for this context. */
3453	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3454	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3455
3456	/* Bind the object to the framebuffer target. */
3457	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3458	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3459
3460	/* Create read and draw framebuffer objects for this context. */
3461	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3462	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3463
3464	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3465	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3466
3467	}
3468	#if 0
3469	/** @todo move to shader lib!!! */
3470	/* Clear the screen */
3471	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3472
3473	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3474	glClearIndex(0);
3475	glClearDepth(1);
3476	glClearStencil(0xffff);
3477	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3478	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3479	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3480	if (pState->ext.glProvokingVertex)
3481	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3482	/** @todo move to shader lib!!! */
3483	#endif
3484	return VINF_SUCCESS;
3485	}
3486
3487	#if defined(RT_OS_LINUX)
3488	/*
3489	* HW accelerated graphics output.
3490	*/
3491
3492	/**
3493	* VMSVGA3d screen data.
3494	*
3495	* Allocated on the heap and pointed to by VMSVGASCREENOBJECT::pHwScreen.
3496	*/
3497	typedef struct VMSVGAHWSCREEN
3498	{
3499	/* OpenGL context, which is used for the screen updates. */
3500	GLXContext glxctx;
3501
3502	/* The overlay window. */
3503	Window xwindow;
3504
3505	/* The RGBA texture which hold the screen content. */
3506	GLuint idScreenTexture;
3507
3508	/* Read and draw framebuffer objects for copying a surface to the screen texture. */
3509	GLuint idReadFramebuffer;
3510	GLuint idDrawFramebuffer;
3511	} VMSVGAHWSCREEN;
3512
3513	/* Send a notification to the UI. */
3514	#if 0 /* Unused */
3515	static int vmsvga3dDrvNotifyHwScreen(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification,
3516	uint32_t idScreen, Pixmap pixmap, void *pvData, size_t cbData)
3517	{
3518	uint8_t au8Buffer[128];
3519	AssertLogRelMsgReturn(cbData <= sizeof(au8Buffer) - sizeof(VBOX3DNOTIFY),
3520	("cbData %zu", cbData),
3521	VERR_INVALID_PARAMETER);
3522
3523	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3524	p->enmNotification = enmNotification;
3525	p->iDisplay = idScreen;
3526	p->u32Reserved = 0;
3527	p->cbData = cbData + sizeof(uint64_t);
3528	/* au8Data consists of a 64 bit pixmap handle followed by notification specific data. */
3529	AssertCompile(sizeof(pixmap) <= sizeof(uint64_t));
3530	(uint64_t )&p->au8Data[0] = (uint64_t)pixmap;
3531	memcpy(&p->au8Data[sizeof(uint64_t)], pvData, cbData);
3532
3533	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3534	return rc;
3535	}
3536	#endif /* Unused */
3537
3538	static void vmsvga3dDrvNotifyHwOverlay(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification, uint32_t idScreen)
3539	{
3540	uint8_t au8Buffer[128];
3541	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3542	p->enmNotification = enmNotification;
3543	p->iDisplay = idScreen;
3544	p->u32Reserved = 0;
3545	p->cbData = sizeof(uint64_t);
3546	(uint64_t )&p->au8Data[0] = 0;
3547
3548	pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3549	}
3550
3551	/* Get X Window handle of the UI Framebuffer window. */
3552	static int vmsvga3dDrvQueryWindow(PVGASTATECC pThisCC, uint32_t idScreen, Window *pWindow)
3553	{
3554	uint8_t au8Buffer[128];
3555	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3556	p->enmNotification = VBOX3D_NOTIFY_TYPE_HW_OVERLAY_GET_ID;
3557	p->iDisplay = idScreen;
3558	p->u32Reserved = 0;
3559	p->cbData = sizeof(uint64_t);
3560	(uint64_t )&p->au8Data[0] = 0;
3561
3562	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3563	if (RT_SUCCESS(rc))
3564	{
3565	pWindow = (Window)(uint64_t *)&p->au8Data[0];
3566	}
3567	return rc;
3568	}
3569
3570	static int ctxErrorHandler(Display dpy, XErrorEvent ev)
3571	{
3572	RT_NOREF(dpy);
3573	LogRel4(("VMSVGA: XError %d\n", (int)ev->error_code));
3574	return 0;
3575	}
3576
3577	/* Create an overlay X window for the HW accelerated screen. */
3578	static int vmsvga3dHwScreenCreate(PVMSVGA3DSTATE pState, Window parentWindow, unsigned int cWidth, unsigned int cHeight, VMSVGAHWSCREEN *p)
3579	{
3580	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3581
3582	int rc = VINF_SUCCESS;
3583
3584	XWindowAttributes parentAttr;
3585	if (XGetWindowAttributes(pState->display, parentWindow, &parentAttr) == 0)
3586	return VERR_INVALID_PARAMETER;
3587
3588	int const idxParentScreen = XScreenNumberOfScreen(parentAttr.screen);
3589
3590	/*
3591	* Create a new GL context, which will be used for copying to the screen.
3592	*/
3593
3594	/* FBConfig attributes for the overlay window. */
3595	static int const aConfigAttribList[] =
3596	{
3597	GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, // Must support GLX windows
3598	GLX_DOUBLEBUFFER, False, // Double buffering had a much lower performance.
3599	GLX_RED_SIZE, 8, // True color RGB with 8 bits per channel.
3600	GLX_GREEN_SIZE, 8,
3601	GLX_BLUE_SIZE, 8,
3602	GLX_ALPHA_SIZE, 8,
3603	GLX_STENCIL_SIZE, 0, // No stencil buffer
3604	GLX_DEPTH_SIZE, 0, // No depth buffer
3605	None
3606	};
3607
3608	/* Find a suitable FB config. */
3609	int cConfigs = 0;
3610	GLXFBConfig *paConfigs = glXChooseFBConfig(pState->display, idxParentScreen, aConfigAttribList, &cConfigs);
3611	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: paConfigs %p cConfigs %d\n", (void *)paConfigs, cConfigs));
3612	if (paConfigs)
3613	{
3614	XVisualInfo *vi = NULL;
3615	int i = 0;
3616	for (; i < cConfigs; ++i)
3617	{
3618	/* Use XFree to free the data returned in the previous iteration of this loop. */
3619	if (vi)
3620	XFree(vi);
3621
3622	vi = glXGetVisualFromFBConfig(pState->display, paConfigs[i]);
3623	if (!vi)
3624	continue;
3625
3626	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: %p vid %lu screen %d depth %d r %lu g %lu b %lu clrmap %d bitsperrgb %d\n",
3627	(void *)vi->visual, vi->visualid, vi->screen, vi->depth,
3628	vi->red_mask, vi->green_mask, vi->blue_mask, vi->colormap_size, vi->bits_per_rgb));
3629
3630	/* Same screen as the parent window. */
3631	if (vi->screen != idxParentScreen)
3632	continue;
3633
3634	/* Search for 32 bits per pixel. */
3635	if (vi->depth != 32)
3636	continue;
3637
3638	/* 8 bits per color component is enough. */
3639	if (vi->bits_per_rgb != 8)
3640	continue;
3641
3642	/* Render to pixmap. */
3643	int value = 0;
3644	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_DRAWABLE_TYPE, &value);
3645	if (!(value & GLX_WINDOW_BIT))
3646	continue;
3647
3648	/* This FB config can be used. */
3649	break;
3650	}
3651
3652	if (i < cConfigs)
3653	{
3654	/* Found a suitable config with index i. */
3655
3656	/* Create an overlay window. */
3657	XSetWindowAttributes swa;
3658	RT_ZERO(swa);
3659
3660	swa.colormap = XCreateColormap(pState->display, parentWindow, vi->visual, AllocNone);
3661	AssertLogRelMsg(swa.colormap, ("XCreateColormap failed"));
3662	swa.border_pixel = 0;
3663	swa.background_pixel = 0;
3664	swa.event_mask = StructureNotifyMask;
3665	swa.override_redirect = 1;
3666	unsigned long const swaAttrs = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask \| CWOverrideRedirect;
3667	p->xwindow = XCreateWindow(pState->display, parentWindow,
3668	0, 0, cWidth, cHeight, 0, vi->depth, InputOutput,
3669	vi->visual, swaAttrs, &swa);
3670	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->xwindow %ld\n", p->xwindow));
3671	if (p->xwindow)
3672	{
3673
3674	p->glxctx = glXCreateContext(pState->display, vi, pState->SharedCtx.glxContext, GL_TRUE);
3675	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxctx %p\n", (void *)p->glxctx));
3676	if (p->glxctx)
3677	{
3678	XMapWindow(pState->display, p->xwindow);
3679	}
3680	else
3681	{
3682	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: glXCreateContext failed\n"));
3683	rc = VERR_NOT_SUPPORTED;
3684	}
3685	}
3686	else
3687	{
3688	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: XCreateWindow failed\n"));
3689	rc = VERR_NOT_SUPPORTED;
3690	}
3691
3692	XSync(pState->display, False);
3693	}
3694	else
3695	{
3696	/* A suitable config is not found. */
3697	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: no FBConfig\n"));
3698	rc = VERR_NOT_SUPPORTED;
3699	}
3700
3701	if (vi)
3702	XFree(vi);
3703
3704	/* "Use XFree to free the memory returned by glXChooseFBConfig." */
3705	XFree(paConfigs);
3706	}
3707	else
3708	{
3709	/* glXChooseFBConfig failed. */
3710	rc = VERR_NOT_SUPPORTED;
3711	}
3712
3713	XSetErrorHandler(oldHandler);
3714	return rc;
3715	}
3716
3717	/* Destroy a HW accelerated screen. */
3718	static void vmsvga3dHwScreenDestroy(PVMSVGA3DSTATE pState, VMSVGAHWSCREEN *p)
3719	{
3720	if (p)
3721	{
3722	LogRel4(("VMSVGA: vmsvga3dHwScreenDestroy: p->xwindow %ld, ctx %p\n", p->xwindow, (void *)p->glxctx));
3723	if (p->glxctx)
3724	{
3725	/* GLX context is changed here, so other code has to set the appropriate context again. */
3726	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3727
3728	glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3729
3730	/* Clean up OpenGL. */
3731	if (p->idReadFramebuffer != OPENGL_INVALID_ID)
3732	pState->ext.glDeleteFramebuffers(1, &p->idReadFramebuffer);
3733	if (p->idDrawFramebuffer != OPENGL_INVALID_ID)
3734	pState->ext.glDeleteFramebuffers(1, &p->idDrawFramebuffer);
3735	if (p->idScreenTexture != OPENGL_INVALID_ID)
3736	glDeleteTextures(1, &p->idScreenTexture);
3737
3738	glXMakeCurrent(pState->display, None, NULL);
3739
3740	glXDestroyContext(pState->display, p->glxctx);
3741	}
3742
3743	if (p->xwindow)
3744	XDestroyWindow(pState->display, p->xwindow);
3745
3746	RT_ZERO(*p);
3747	}
3748	}
3749
3750	#define GLCHECK() \
3751	do { \
3752	int glErr = glGetError(); \
3753	if (glErr != GL_NO_ERROR) LogRel4(("VMSVGA: GL error 0x%x @%d\n", glErr, __LINE__)); \
3754	} while(0)
3755
3756	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3757	{
3758	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: screen %u\n", pScreen->idScreen));
3759
3760	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3761	AssertReturn(pState, VERR_NOT_SUPPORTED);
3762
3763	if (!pThis->svga.f3DOverlayEnabled)
3764	return VERR_NOT_SUPPORTED;
3765
3766	Assert(pScreen->pHwScreen == NULL);
3767
3768	VMSVGAHWSCREEN p = (VMSVGAHWSCREEN )RTMemAllocZ(sizeof(VMSVGAHWSCREEN));
3769	AssertPtrReturn(p, VERR_NO_MEMORY);
3770
3771	/* Query the parent window ID from the UI framebuffer.
3772	* If it is there then
3773	* the device will create a texture for the screen content and an overlay window to present the screen content.
3774	* otherwise
3775	* the device will use the guest VRAM system memory for the screen content.
3776	*/
3777	Window parentWindow;
3778	int rc = vmsvga3dDrvQueryWindow(pThisCC, pScreen->idScreen, &parentWindow);
3779	if (RT_SUCCESS(rc))
3780	{
3781	/* Create the hardware accelerated screen. */
3782	rc = vmsvga3dHwScreenCreate(pState, parentWindow, pScreen->cWidth, pScreen->cHeight, p);
3783	if (RT_SUCCESS(rc))
3784	{
3785	/*
3786	* Setup the OpenGL context of the screen. The context will be used to draw on the screen.
3787	*/
3788
3789	/* GLX context is changed here, so other code has to set the appropriate context again. */
3790	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3791
3792	Bool const fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3793	if (fSuccess)
3794	{
3795	/* Set GL state. */
3796	glClearColor(0, 0, 0, 1);
3797	glEnable(GL_TEXTURE_2D);
3798	glDisable(GL_DEPTH_TEST);
3799	glDisable(GL_CULL_FACE);
3800
3801	/* The RGBA texture which hold the screen content. */
3802	glGenTextures(1, &p->idScreenTexture); GLCHECK();
3803	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3804	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); GLCHECK();
3805	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); GLCHECK();
3806	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, pScreen->cWidth, pScreen->cHeight, 0,
3807	GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); GLCHECK();
3808
3809	/* Create read and draw framebuffer objects for this screen. */
3810	pState->ext.glGenFramebuffers(1, &p->idReadFramebuffer); GLCHECK();
3811	pState->ext.glGenFramebuffers(1, &p->idDrawFramebuffer); GLCHECK();
3812
3813	/* Work in screen coordinates. */
3814	glMatrixMode(GL_MODELVIEW);
3815	glLoadIdentity();
3816	glOrtho(0, pScreen->cWidth, 0, pScreen->cHeight, -1, 1);
3817	glMatrixMode(GL_PROJECTION);
3818	glLoadIdentity();
3819
3820	/* Clear the texture. */
3821	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3822	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3823	p->idScreenTexture, 0); GLCHECK();
3824
3825	glClear(GL_COLOR_BUFFER_BIT);
3826
3827	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); GLCHECK();
3828
3829	glXMakeCurrent(pState->display, None, NULL);
3830
3831	XSync(pState->display, False);
3832
3833	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_CREATED, pScreen->idScreen);
3834	}
3835	else
3836	{
3837	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: failed to set current context\n"));
3838	rc = VERR_NOT_SUPPORTED;
3839	}
3840	}
3841	}
3842	else
3843	{
3844	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: no framebuffer\n"));
3845	}
3846
3847	if (RT_SUCCESS(rc))
3848	{
3849	LogRel(("VMSVGA: Using HW accelerated screen %u\n", pScreen->idScreen));
3850	pScreen->pHwScreen = p;
3851	}
3852	else
3853	{
3854	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: %Rrc\n", rc));
3855	vmsvga3dHwScreenDestroy(pState, p);
3856	RTMemFree(p);
3857	}
3858
3859	return rc;
3860	}
3861
3862	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3863	{
3864	LogRel4(("VMSVGA: vmsvga3dBackDestroyScreen: screen %u\n", pScreen->idScreen));
3865
3866	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3867	AssertReturn(pState, VERR_NOT_SUPPORTED);
3868
3869	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3870
3871	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3872	if (p)
3873	{
3874	pScreen->pHwScreen = NULL;
3875
3876	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_DESTROYED, pScreen->idScreen);
3877
3878	vmsvga3dHwScreenDestroy(pState, p);
3879	RTMemFree(p);
3880	}
3881
3882	XSetErrorHandler(oldHandler);
3883
3884	return VINF_SUCCESS;
3885	}
3886
3887	/* Blit a surface to the GLX pixmap. */
3888	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3889	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3890	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3891	{
3892	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3893	AssertReturn(pState, VERR_NOT_SUPPORTED);
3894
3895	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3896	AssertReturn(p, VERR_NOT_SUPPORTED);
3897
3898	PVMSVGA3DSURFACE pSurface;
3899	int rc = vmsvga3dSurfaceFromSid(pState, srcImage.sid, &pSurface);
3900	AssertRCReturn(rc, rc);
3901
3902	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
3903	{
3904	LogFunc(("src sid=%u flags=0x%x format=%d -> create texture\n", srcImage.sid, pSurface->f.s.surface1Flags, pSurface->format));
3905	rc = vmsvga3dBackCreateTexture(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID, pSurface);
3906	AssertRCReturn(rc, rc);
3907	}
3908
3909	AssertReturn(pSurface->enmOGLResType == VMSVGA3D_OGLRESTYPE_TEXTURE, VERR_NOT_SUPPORTED);
3910
3911	PVMSVGA3DMIPMAPLEVEL pMipLevel;
3912	rc = vmsvga3dMipmapLevel(pSurface, srcImage.face, srcImage.mipmap, &pMipLevel);
3913	AssertRCReturn(rc, rc);
3914
3915	/** @todo Implement. */
3916	RT_NOREF(cRects, paRects);
3917
3918	/* GLX context is changed here, so other code has to set appropriate context again. */
3919	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3920
3921	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3922
3923	Bool fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3924	if (fSuccess)
3925	{
3926	/* Activate the read and draw framebuffer objects. */
3927	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, p->idReadFramebuffer); GLCHECK();
3928	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3929
3930	/* Bind the source and destination objects to the right place. */
3931	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3932	pSurface->oglId.texture, 0); GLCHECK();
3933	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3934	p->idScreenTexture, 0); GLCHECK();
3935
3936	pState->ext.glBlitFramebuffer(srcRect.left,
3937	srcRect.top,
3938	srcRect.right,
3939	srcRect.bottom,
3940	destRect.left,
3941	destRect.top,
3942	destRect.right,
3943	destRect.bottom,
3944	GL_COLOR_BUFFER_BIT,
3945	GL_NEAREST); GLCHECK();
3946
3947	/* Reset the frame buffer association */
3948	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0); GLCHECK();
3949
3950	/* Update the overlay window. */
3951	glClear(GL_COLOR_BUFFER_BIT);
3952
3953	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3954
3955	GLint const w = pScreen->cWidth;
3956	GLint const h = pScreen->cHeight;
3957
3958	glBegin(GL_QUADS);
3959	glTexCoord2f(0.0f, 0.0f); glVertex2i(0, h);
3960	glTexCoord2f(0.0f, 1.0f); glVertex2i(0, 0);
3961	glTexCoord2f(1.0f, 1.0f); glVertex2i(w, 0);
3962	glTexCoord2f(1.0f, 0.0f); glVertex2i(w, h);
3963	glEnd(); GLCHECK();
3964
3965	glBindTexture(GL_TEXTURE_2D, 0); GLCHECK();
3966
3967	glXMakeCurrent(pState->display, None, NULL);
3968	}
3969	else
3970	{
3971	LogRel4(("VMSVGA: vmsvga3dBackSurfaceBlitToScreen: screen %u, glXMakeCurrent for pixmap failed\n", pScreen->idScreen));
3972	}
3973
3974	XSetErrorHandler(oldHandler);
3975
3976	return VINF_SUCCESS;
3977	}
3978
3979	#else /* !RT_OS_LINUX */
3980
3981	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3982	{
3983	RT_NOREF(pThis, pThisCC, pScreen);
3984	return VERR_NOT_IMPLEMENTED;
3985	}
3986
3987	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3988	{
3989	RT_NOREF(pThisCC, pScreen);
3990	return VERR_NOT_IMPLEMENTED;
3991	}
3992
3993	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3994	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3995	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3996	{
3997	RT_NOREF(pThisCC, pScreen, destRect, srcImage, srcRect, cRects, paRects);
3998	return VERR_NOT_IMPLEMENTED;
3999	}
4000	#endif
4001
4002	/**
4003	* Create a new 3d context
4004	*
4005	* @returns VBox status code.
4006	* @param pThisCC The VGA/VMSVGA state for ring-3.
4007	* @param cid Context id
4008	*/
4009	static DECLCALLBACK(int) vmsvga3dBackContextDefine(PVGASTATECC pThisCC, uint32_t cid)
4010	{
4011	return vmsvga3dContextDefineOgl(pThisCC, cid, 0/fFlags/);
4012	}
4013
4014	/**
4015	* Destroys a 3d context.
4016	*
4017	* @returns VBox status code.
4018	* @param pThisCC The VGA/VMSVGA state for ring-3.
4019	* @param pContext The context to destroy.
4020	* @param cid Context id
4021	*/
4022	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid)
4023	{
4024	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4025	AssertReturn(pState, VERR_NO_MEMORY);
4026	AssertReturn(pContext, VERR_INVALID_PARAMETER);
4027	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
4028	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
4029
4030	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4031
4032	if (pContext->id == VMSVGA3D_SHARED_CTX_ID)
4033	{
4034	/* Delete resources which use the shared context. */
4035	vmsvga3dOnSharedContextDestroy(pState);
4036	}
4037
4038	/* Destroy all leftover pixel shaders. */
4039	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
4040	{
4041	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
4042	vmsvga3dBackShaderDestroy(pThisCC, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
4043	}
4044	if (pContext->paPixelShader)
4045	RTMemFree(pContext->paPixelShader);
4046
4047	/* Destroy all leftover vertex shaders. */
4048	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
4049	{
4050	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
4051	vmsvga3dBackShaderDestroy(pThisCC, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
4052	}
4053	if (pContext->paVertexShader)
4054	RTMemFree(pContext->paVertexShader);
4055
4056	if (pContext->state.paVertexShaderConst)
4057	RTMemFree(pContext->state.paVertexShaderConst);
4058	if (pContext->state.paPixelShaderConst)
4059	RTMemFree(pContext->state.paPixelShaderConst);
4060
4061	if (pContext->pShaderContext)
4062	{
4063	int rc = ShaderContextDestroy(pContext->pShaderContext);
4064	AssertRC(rc);
4065	}
4066
4067	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
4068	{
4069	/* Unbind the object from the framebuffer target. */
4070	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
4071	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4072	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
4073	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4074
4075	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
4076	{
4077	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
4078	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4079	}
4080	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
4081	{
4082	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
4083	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4084	}
4085	}
4086
4087	vmsvga3dBackOcclusionQueryDelete(pThisCC, pContext);
4088
4089	#ifdef RT_OS_WINDOWS
4090	wglMakeCurrent(pContext->hdc, NULL);
4091	wglDeleteContext(pContext->hglrc);
4092	ReleaseDC(pContext->hwnd, pContext->hdc);
4093
4094	/* Destroy the window we've created. */
4095	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
4096	AssertRC(rc);
4097	#elif defined(RT_OS_DARWIN)
4098	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
4099	#elif defined(RT_OS_LINUX)
4100	glXMakeCurrent(pState->display, None, NULL);
4101	glXDestroyContext(pState->display, pContext->glxContext);
4102	XDestroyWindow(pState->display, pContext->window);
4103	#endif
4104
4105	memset(pContext, 0, sizeof(*pContext));
4106	pContext->id = SVGA3D_INVALID_ID;
4107
4108	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
4109	return VINF_SUCCESS;
4110	}
4111
4112	/**
4113	* Destroy an existing 3d context
4114	*
4115	* @returns VBox status code.
4116	* @param pThisCC The VGA/VMSVGA state for ring-3.
4117	* @param cid Context id
4118	*/
4119	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid)
4120	{
4121	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4122	AssertReturn(pState, VERR_WRONG_ORDER);
4123
4124	/*
4125	* Resolve the context and hand it to the common worker function.
4126	*/
4127	if ( cid < pState->cContexts
4128	&& pState->papContexts[cid]->id == cid)
4129	return vmsvga3dContextDestroyOgl(pThisCC, pState->papContexts[cid], cid);
4130
4131	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
4132	return VINF_SUCCESS;
4133	}
4134
4135	/**
4136	* Worker for vmsvga3dBackChangeMode that resizes a context.
4137	*
4138	* @param pState The VMSVGA3d state.
4139	* @param pContext The context.
4140	*/
4141	static void vmsvga3dChangeModeOneContext(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
4142	{
4143	RT_NOREF(pState, pContext);
4144	/* Do nothing. The window is not used for presenting. */
4145	}
4146
4147	/* Handle resize */
4148	static DECLCALLBACK(int) vmsvga3dBackChangeMode(PVGASTATECC pThisCC)
4149	{
4150	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4151	AssertReturn(pState, VERR_NO_MEMORY);
4152
4153	/* Resize the shared context too. */
4154	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
4155	vmsvga3dChangeModeOneContext(pState, &pState->SharedCtx);
4156
4157	/* Resize all active contexts. */
4158	for (uint32_t i = 0; i < pState->cContexts; i++)
4159	{
4160	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
4161	if (pContext->id != SVGA3D_INVALID_ID)
4162	vmsvga3dChangeModeOneContext(pState, pContext);
4163	}
4164
4165	return VINF_SUCCESS;
4166	}
4167
4168
4169	static DECLCALLBACK(int) vmsvga3dBackSetTransform(PVGASTATECC pThisCC, uint32_t cid, SVGA3dTransformType type, float matrix[16])
4170	{
4171	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4172	AssertReturn(pState, VERR_NO_MEMORY);
4173	bool fModelViewChanged = false;
4174
4175	Log(("vmsvga3dSetTransform cid=%u %s\n", cid, vmsvgaTransformToString(type)));
4176
4177	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
4178
4179	PVMSVGA3DCONTEXT pContext;
4180	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4181	AssertRCReturn(rc, rc);
4182
4183	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4184
4185	/* Save this matrix for vm state save/restore. */
4186	pContext->state.aTransformState[type].fValid = true;
4187	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
4188	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
4189
4190	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)));
4191	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)));
4192	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)));
4193	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)));
4194
4195	switch (type)
4196	{
4197	case SVGA3D_TRANSFORM_VIEW:
4198	/* View * World = Model View */
4199	glMatrixMode(GL_MODELVIEW);
4200	glLoadMatrixf(matrix);
4201	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
4202	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
4203	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4204	fModelViewChanged = true;
4205	break;
4206
4207	case SVGA3D_TRANSFORM_PROJECTION:
4208	{
4209	rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
4210	AssertRCReturn(rc, rc);
4211	break;
4212	}
4213
4214	case SVGA3D_TRANSFORM_TEXTURE0:
4215	glMatrixMode(GL_TEXTURE);
4216	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4217	glLoadMatrixf(matrix);
4218	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4219	break;
4220
4221	case SVGA3D_TRANSFORM_TEXTURE1:
4222	case SVGA3D_TRANSFORM_TEXTURE2:
4223	case SVGA3D_TRANSFORM_TEXTURE3:
4224	case SVGA3D_TRANSFORM_TEXTURE4:
4225	case SVGA3D_TRANSFORM_TEXTURE5:
4226	case SVGA3D_TRANSFORM_TEXTURE6:
4227	case SVGA3D_TRANSFORM_TEXTURE7:
4228	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
4229	return VERR_INVALID_PARAMETER;
4230
4231	case SVGA3D_TRANSFORM_WORLD:
4232	/* View * World = Model View */
4233	glMatrixMode(GL_MODELVIEW);
4234	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
4235	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
4236	else
4237	glLoadIdentity();
4238	glMultMatrixf(matrix);
4239	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4240	fModelViewChanged = true;
4241	break;
4242
4243	case SVGA3D_TRANSFORM_WORLD1:
4244	case SVGA3D_TRANSFORM_WORLD2:
4245	case SVGA3D_TRANSFORM_WORLD3:
4246	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
4247	return VERR_INVALID_PARAMETER;
4248
4249	default:
4250	Log(("vmsvga3dSetTransform: unknown type!!\n"));
4251	return VERR_INVALID_PARAMETER;
4252	}
4253
4254	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
4255	if (fModelViewChanged)
4256	{
4257	/* Reprogram the clip planes. */
4258	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
4259	{
4260	if (pContext->state.aClipPlane[j].fValid == true)
4261	vmsvga3dBackSetClipPlane(pThisCC, cid, j, pContext->state.aClipPlane[j].plane);
4262	}
4263
4264	/* Reprogram the light data. */
4265	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
4266	{
4267	if (pContext->state.aLightData[j].fValidData == true)
4268	vmsvga3dBackSetLightData(pThisCC, cid, j, &pContext->state.aLightData[j].data);
4269	}
4270	}
4271
4272	return VINF_SUCCESS;
4273	}
4274
4275	static DECLCALLBACK(int) vmsvga3dBackSetZRange(PVGASTATECC pThisCC, uint32_t cid, SVGA3dZRange zRange)
4276	{
4277	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4278	AssertReturn(pState, VERR_NO_MEMORY);
4279
4280	Log(("vmsvga3dSetZRange cid=%u min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
4281
4282	PVMSVGA3DCONTEXT pContext;
4283	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4284	AssertRCReturn(rc, rc);
4285
4286	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4287
4288	pContext->state.zRange = zRange;
4289	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
4290
4291	if (zRange.min < -1.0)
4292	zRange.min = -1.0;
4293	if (zRange.max > 1.0)
4294	zRange.max = 1.0;
4295
4296	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
4297	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4298	return VINF_SUCCESS;
4299	}
4300
4301	/**
4302	* Convert SVGA blend op value to its OpenGL equivalent
4303	*/
4304	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
4305	{
4306	switch (blendOp)
4307	{
4308	case SVGA3D_BLENDOP_ZERO:
4309	return GL_ZERO;
4310	case SVGA3D_BLENDOP_ONE:
4311	return GL_ONE;
4312	case SVGA3D_BLENDOP_SRCCOLOR:
4313	return GL_SRC_COLOR;
4314	case SVGA3D_BLENDOP_INVSRCCOLOR:
4315	return GL_ONE_MINUS_SRC_COLOR;
4316	case SVGA3D_BLENDOP_SRCALPHA:
4317	return GL_SRC_ALPHA;
4318	case SVGA3D_BLENDOP_INVSRCALPHA:
4319	return GL_ONE_MINUS_SRC_ALPHA;
4320	case SVGA3D_BLENDOP_DESTALPHA:
4321	return GL_DST_ALPHA;
4322	case SVGA3D_BLENDOP_INVDESTALPHA:
4323	return GL_ONE_MINUS_DST_ALPHA;
4324	case SVGA3D_BLENDOP_DESTCOLOR:
4325	return GL_DST_COLOR;
4326	case SVGA3D_BLENDOP_INVDESTCOLOR:
4327	return GL_ONE_MINUS_DST_COLOR;
4328	case SVGA3D_BLENDOP_SRCALPHASAT:
4329	return GL_SRC_ALPHA_SATURATE;
4330	case SVGA3D_BLENDOP_BLENDFACTOR:
4331	return GL_CONSTANT_COLOR;
4332	case SVGA3D_BLENDOP_INVBLENDFACTOR:
4333	return GL_ONE_MINUS_CONSTANT_COLOR;
4334	default:
4335	AssertFailed();
4336	return GL_ONE;
4337	}
4338	}
4339
4340	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
4341	{
4342	switch (blendEq)
4343	{
4344	case SVGA3D_BLENDEQ_ADD:
4345	return GL_FUNC_ADD;
4346	case SVGA3D_BLENDEQ_SUBTRACT:
4347	return GL_FUNC_SUBTRACT;
4348	case SVGA3D_BLENDEQ_REVSUBTRACT:
4349	return GL_FUNC_REVERSE_SUBTRACT;
4350	case SVGA3D_BLENDEQ_MINIMUM:
4351	return GL_MIN;
4352	case SVGA3D_BLENDEQ_MAXIMUM:
4353	return GL_MAX;
4354	default:
4355	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
4356	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
4357	return GL_FUNC_ADD;
4358	}
4359	}
4360
4361	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
4362	{
4363	switch (cmpFunc)
4364	{
4365	case SVGA3D_CMP_NEVER:
4366	return GL_NEVER;
4367	case SVGA3D_CMP_LESS:
4368	return GL_LESS;
4369	case SVGA3D_CMP_EQUAL:
4370	return GL_EQUAL;
4371	case SVGA3D_CMP_LESSEQUAL:
4372	return GL_LEQUAL;
4373	case SVGA3D_CMP_GREATER:
4374	return GL_GREATER;
4375	case SVGA3D_CMP_NOTEQUAL:
4376	return GL_NOTEQUAL;
4377	case SVGA3D_CMP_GREATEREQUAL:
4378	return GL_GEQUAL;
4379	case SVGA3D_CMP_ALWAYS:
4380	return GL_ALWAYS;
4381	default:
4382	Assert(cmpFunc == SVGA3D_CMP_INVALID);
4383	return GL_LESS;
4384	}
4385	}
4386
4387	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
4388	{
4389	switch (stencilOp)
4390	{
4391	case SVGA3D_STENCILOP_KEEP:
4392	return GL_KEEP;
4393	case SVGA3D_STENCILOP_ZERO:
4394	return GL_ZERO;
4395	case SVGA3D_STENCILOP_REPLACE:
4396	return GL_REPLACE;
4397	case SVGA3D_STENCILOP_INCRSAT:
4398	return GL_INCR_WRAP;
4399	case SVGA3D_STENCILOP_DECRSAT:
4400	return GL_DECR_WRAP;
4401	case SVGA3D_STENCILOP_INVERT:
4402	return GL_INVERT;
4403	case SVGA3D_STENCILOP_INCR:
4404	return GL_INCR;
4405	case SVGA3D_STENCILOP_DECR:
4406	return GL_DECR;
4407	default:
4408	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4409	return GL_KEEP;
4410	}
4411	}
4412
4413	static DECLCALLBACK(int) vmsvga3dBackSetRenderState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4414	{
4415	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4416	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4417	AssertReturn(pState, VERR_NO_MEMORY);
4418
4419	Log(("vmsvga3dSetRenderState cid=%u cRenderStates=%d\n", cid, cRenderStates));
4420
4421	PVMSVGA3DCONTEXT pContext;
4422	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4423	AssertRCReturn(rc, rc);
4424
4425	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4426
4427	for (unsigned i = 0; i < cRenderStates; i++)
4428	{
4429	GLenum enableCap = ~(GLenum)0;
4430	Log(("vmsvga3dSetRenderState: cid=%u state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4431	/* Save the render state for vm state saving. */
4432	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
4433	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4434
4435	switch (pRenderState[i].state)
4436	{
4437	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4438	enableCap = GL_DEPTH_TEST;
4439	val = pRenderState[i].uintValue;
4440	break;
4441
4442	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4443	glDepthMask(!!pRenderState[i].uintValue);
4444	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4445	break;
4446
4447	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4448	enableCap = GL_ALPHA_TEST;
4449	val = pRenderState[i].uintValue;
4450	break;
4451
4452	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4453	enableCap = GL_DITHER;
4454	val = pRenderState[i].uintValue;
4455	break;
4456
4457	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4458	enableCap = GL_FOG;
4459	val = pRenderState[i].uintValue;
4460	break;
4461
4462	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4463	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4464	break;
4465
4466	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4467	enableCap = GL_LIGHTING;
4468	val = pRenderState[i].uintValue;
4469	break;
4470
4471	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4472	/* not applicable */
4473	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4474	break;
4475
4476	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4477	enableCap = GL_POINT_SPRITE_ARB;
4478	val = pRenderState[i].uintValue;
4479	break;
4480
4481	case SVGA3D_RS_POINTSIZE: /* float */
4482	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4483	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4484	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4485	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4486	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4487
4488	glPointSize(pRenderState[i].floatValue);
4489	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4490	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4491	break;
4492
4493	case SVGA3D_RS_POINTSIZEMIN: /* float */
4494	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4495	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4496	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4497	break;
4498
4499	case SVGA3D_RS_POINTSIZEMAX: /* float */
4500	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4501	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4502	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4503	break;
4504
4505	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4506	case SVGA3D_RS_POINTSCALE_A: /* float */
4507	case SVGA3D_RS_POINTSCALE_B: /* float */
4508	case SVGA3D_RS_POINTSCALE_C: /* float */
4509	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4510	break;
4511
4512	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4513	{
4514	GLfloat color[4]; /* red, green, blue, alpha */
4515
4516	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4517
4518	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4519	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4520	break;
4521	}
4522
4523	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4524	{
4525	for (uint32_t j = 0; j < SVGA3D_NUM_CLIPPLANES; j++)
4526	{
4527	if (pRenderState[i].uintValue & RT_BIT(j))
4528	glEnable(GL_CLIP_PLANE0 + j);
4529	else
4530	glDisable(GL_CLIP_PLANE0 + j);
4531	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4532	}
4533	break;
4534	}
4535
4536	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4537	{
4538	GLfloat color[4]; /* red, green, blue, alpha */
4539
4540	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4541
4542	glFogfv(GL_FOG_COLOR, color);
4543	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4544	break;
4545	}
4546
4547	case SVGA3D_RS_FOGSTART: /* float */
4548	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4549	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4550	break;
4551
4552	case SVGA3D_RS_FOGEND: /* float */
4553	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4554	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4555	break;
4556
4557	case SVGA3D_RS_FOGDENSITY: /* float */
4558	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4559	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4560	break;
4561
4562	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4563	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4564	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4565	break;
4566
4567	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4568	{
4569	SVGA3dFogMode mode;
4570	mode.uintValue = pRenderState[i].uintValue;
4571
4572	enableCap = GL_FOG_MODE;
4573	switch (mode.function)
4574	{
4575	case SVGA3D_FOGFUNC_EXP:
4576	val = GL_EXP;
4577	break;
4578	case SVGA3D_FOGFUNC_EXP2:
4579	val = GL_EXP2;
4580	break;
4581	case SVGA3D_FOGFUNC_LINEAR:
4582	val = GL_LINEAR;
4583	break;
4584	default:
4585	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.function), VERR_INTERNAL_ERROR);
4586	break;
4587	}
4588
4589	/** @todo how to switch between vertex and pixel fog modes??? */
4590	Assert(mode.type == SVGA3D_FOGTYPE_PIXEL);
4591	#if 0
4592	/* The fog type determines the render state. */
4593	switch (mode.type)
4594	{
4595	case SVGA3D_FOGTYPE_VERTEX:
4596	renderState = D3DRS_FOGVERTEXMODE;
4597	break;
4598	case SVGA3D_FOGTYPE_PIXEL:
4599	renderState = D3DRS_FOGTABLEMODE;
4600	break;
4601	default:
4602	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.type), VERR_INTERNAL_ERROR);
4603	break;
4604	}
4605	#endif
4606
4607	/* Set the fog base to depth or range. */
4608	switch (mode.base)
4609	{
4610	case SVGA3D_FOGBASE_DEPTHBASED:
4611	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4612	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4613	break;
4614	case SVGA3D_FOGBASE_RANGEBASED:
4615	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4616	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4617	break;
4618	default:
4619	/* ignore */
4620	AssertMsgFailed(("Unexpected fog base %d\n", mode.base));
4621	break;
4622	}
4623	break;
4624	}
4625
4626	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4627	{
4628	SVGA3dFillMode mode;
4629
4630	mode.uintValue = pRenderState[i].uintValue;
4631
4632	switch (mode.mode)
4633	{
4634	case SVGA3D_FILLMODE_POINT:
4635	val = GL_POINT;
4636	break;
4637	case SVGA3D_FILLMODE_LINE:
4638	val = GL_LINE;
4639	break;
4640	case SVGA3D_FILLMODE_FILL:
4641	val = GL_FILL;
4642	break;
4643	default:
4644	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.mode), VERR_INTERNAL_ERROR);
4645	break;
4646	}
4647	/* Only front and back faces. Also recent Mesa guest drivers initialize the 'face' to zero. */
4648	ASSERT_GUEST(mode.face == SVGA3D_FACE_FRONT_BACK \|\| mode.face == SVGA3D_FACE_INVALID);
4649	glPolygonMode(GL_FRONT_AND_BACK, val);
4650	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4651	break;
4652	}
4653
4654	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4655	switch (pRenderState[i].uintValue)
4656	{
4657	case SVGA3D_SHADEMODE_FLAT:
4658	val = GL_FLAT;
4659	break;
4660
4661	case SVGA3D_SHADEMODE_SMOOTH:
4662	val = GL_SMOOTH;
4663	break;
4664
4665	default:
4666	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4667	break;
4668	}
4669
4670	glShadeModel(val);
4671	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4672	break;
4673
4674	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4675	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4676	/** @todo */
4677	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4678	/*
4679	renderState = D3DRS_LINEPATTERN;
4680	val = pRenderState[i].uintValue;
4681	*/
4682	break;
4683
4684	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4685	enableCap = GL_LINE_SMOOTH;
4686	val = pRenderState[i].uintValue;
4687	break;
4688
4689	case SVGA3D_RS_LINEWIDTH: /* float */
4690	glLineWidth(pRenderState[i].floatValue);
4691	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4692	break;
4693
4694	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4695	{
4696	/* Refresh the blending state based on the new enable setting.
4697	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4698	*/
4699	static SVGA3dRenderStateName const saRefreshState[] =
4700	{
4701	SVGA3D_RS_SRCBLEND,
4702	SVGA3D_RS_BLENDEQUATION
4703	};
4704	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4705	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4706	{
4707	renderstate[j].state = saRefreshState[j];
4708	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4709	}
4710
4711	rc = vmsvga3dBackSetRenderState(pThisCC, cid, 2, renderstate);
4712	AssertRCReturn(rc, rc);
4713
4714	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4715	continue; /* Ignore if blend is enabled */
4716	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4717	} RT_FALL_THRU();
4718
4719	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4720	enableCap = GL_BLEND;
4721	val = pRenderState[i].uintValue;
4722	break;
4723
4724	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4725	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4726	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4727	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4728	{
4729	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4730	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4731
4732	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4733	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4734	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4735	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4736	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4737	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4738	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4739	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4740
4741	switch (pRenderState[i].state)
4742	{
4743	case SVGA3D_RS_SRCBLEND:
4744	srcRGB = blendop;
4745	break;
4746	case SVGA3D_RS_DSTBLEND:
4747	dstRGB = blendop;
4748	break;
4749	case SVGA3D_RS_SRCBLENDALPHA:
4750	srcAlpha = blendop;
4751	break;
4752	case SVGA3D_RS_DSTBLENDALPHA:
4753	dstAlpha = blendop;
4754	break;
4755	default:
4756	/* not possible; shut up gcc */
4757	AssertFailed();
4758	break;
4759	}
4760
4761	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4762	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4763	else
4764	glBlendFunc(srcRGB, dstRGB);
4765	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4766	break;
4767	}
4768
4769	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4770	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4771	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4772	{
4773	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4774	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4775	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4776	}
4777	else
4778	{
4779	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4780	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4781	#else
4782	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4783	#endif
4784	}
4785	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4786	break;
4787
4788	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4789	{
4790	GLfloat red, green, blue, alpha;
4791
4792	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4793
4794	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4795	glBlendColor(red, green, blue, alpha);
4796	#else
4797	pState->ext.glBlendColor(red, green, blue, alpha);
4798	#endif
4799	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4800	break;
4801	}
4802
4803	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4804	{
4805	GLenum mode = GL_BACK; /* default for OpenGL */
4806
4807	switch (pRenderState[i].uintValue)
4808	{
4809	case SVGA3D_FACE_NONE:
4810	break;
4811	case SVGA3D_FACE_FRONT:
4812	mode = GL_FRONT;
4813	break;
4814	case SVGA3D_FACE_BACK:
4815	mode = GL_BACK;
4816	break;
4817	case SVGA3D_FACE_FRONT_BACK:
4818	mode = GL_FRONT_AND_BACK;
4819	break;
4820	default:
4821	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4822	break;
4823	}
4824	enableCap = GL_CULL_FACE;
4825	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4826	{
4827	glCullFace(mode);
4828	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4829	val = 1;
4830	}
4831	else
4832	val = 0;
4833	break;
4834	}
4835
4836	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4837	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4838	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4839	break;
4840
4841	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4842	{
4843	GLclampf ref;
4844
4845	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4846	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4847	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4848	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4849	break;
4850	}
4851
4852	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4853	{
4854	GLint func;
4855
4856	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4857	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4858	glAlphaFunc(func, pRenderState[i].floatValue);
4859	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4860	break;
4861	}
4862
4863	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4864	{
4865	/* Refresh the stencil state based on the new enable setting.
4866	* This will take existing states and set them using either glStencil or glStencil*Separate.
4867	*/
4868	static SVGA3dRenderStateName const saRefreshState[] =
4869	{
4870	SVGA3D_RS_STENCILFUNC,
4871	SVGA3D_RS_STENCILFAIL,
4872	SVGA3D_RS_CCWSTENCILFUNC,
4873	SVGA3D_RS_CCWSTENCILFAIL
4874	};
4875	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4876	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4877	{
4878	renderstate[j].state = saRefreshState[j];
4879	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4880	}
4881
4882	rc = vmsvga3dBackSetRenderState(pThisCC, cid, RT_ELEMENTS(renderstate), renderstate);
4883	AssertRCReturn(rc, rc);
4884
4885	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4886	continue; /* Ignore if stencil is enabled */
4887	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4888	} RT_FALL_THRU();
4889
4890	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4891	enableCap = GL_STENCIL_TEST;
4892	val = pRenderState[i].uintValue;
4893	break;
4894
4895	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4896	case SVGA3D_RS_STENCILREF: /* uint32_t */
4897	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4898	{
4899	GLint func, ref;
4900	GLuint mask;
4901
4902	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4903	glGetIntegerv(GL_STENCIL_FUNC, &func);
4904	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4905	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4906	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4907	glGetIntegerv(GL_STENCIL_REF, &ref);
4908	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4909
4910	/* Update the changed value. */
4911	switch (pRenderState[i].state)
4912	{
4913	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4914	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4915	break;
4916
4917	case SVGA3D_RS_STENCILREF: /* uint32_t */
4918	ref = pRenderState[i].uintValue;
4919	break;
4920
4921	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4922	mask = pRenderState[i].uintValue;
4923	break;
4924
4925	default:
4926	/* not possible; shut up gcc */
4927	AssertFailed();
4928	break;
4929	}
4930
4931	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4932	{
4933	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4934	}
4935	else
4936	{
4937	glStencilFunc(func, ref, mask);
4938	}
4939	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4940	break;
4941	}
4942
4943	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4944	glStencilMask(pRenderState[i].uintValue);
4945	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4946	break;
4947
4948	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4949	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4950	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4951	{
4952	GLint sfail, dpfail, dppass;
4953	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4954
4955	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
4956	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4957	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
4958	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4959	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
4960	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4961
4962	switch (pRenderState[i].state)
4963	{
4964	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4965	sfail = stencilop;
4966	break;
4967	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4968	dpfail = stencilop;
4969	break;
4970	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4971	dppass = stencilop;
4972	break;
4973	default:
4974	/* not possible; shut up gcc */
4975	AssertFailed();
4976	break;
4977	}
4978	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4979	{
4980	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
4981	}
4982	else
4983	{
4984	glStencilOp(sfail, dpfail, dppass);
4985	}
4986	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4987	break;
4988	}
4989
4990	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
4991	{
4992	GLint ref;
4993	GLuint mask;
4994	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4995
4996	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
4997	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4998	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4999	glGetIntegerv(GL_STENCIL_REF, &ref);
5000	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5001
5002	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
5003	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5004	break;
5005	}
5006
5007	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5008	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5009	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5010	{
5011	GLint sfail, dpfail, dppass;
5012	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
5013
5014	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
5015	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5016	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
5017	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5018	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
5019	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5020
5021	switch (pRenderState[i].state)
5022	{
5023	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5024	sfail = stencilop;
5025	break;
5026	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5027	dpfail = stencilop;
5028	break;
5029	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5030	dppass = stencilop;
5031	break;
5032	default:
5033	/* not possible; shut up gcc */
5034	AssertFailed();
5035	break;
5036	}
5037	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
5038	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5039	break;
5040	}
5041
5042	case SVGA3D_RS_ZBIAS: /* float */
5043	/** @todo unknown meaning; depth bias is not identical
5044	renderState = D3DRS_DEPTHBIAS;
5045	val = pRenderState[i].uintValue;
5046	*/
5047	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
5048	break;
5049
5050	case SVGA3D_RS_DEPTHBIAS: /* float */
5051	{
5052	GLfloat factor;
5053
5054	/** @todo not sure if the d3d & ogl definitions are identical. */
5055
5056	/* Do not change the factor part. */
5057	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
5058	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5059
5060	glPolygonOffset(factor, pRenderState[i].floatValue);
5061	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5062	break;
5063	}
5064
5065	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
5066	{
5067	GLfloat units;
5068
5069	/** @todo not sure if the d3d & ogl definitions are identical. */
5070
5071	/* Do not change the factor part. */
5072	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
5073	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5074
5075	glPolygonOffset(pRenderState[i].floatValue, units);
5076	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5077	break;
5078	}
5079
5080	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
5081	{
5082	GLboolean red, green, blue, alpha;
5083	SVGA3dColorMask mask;
5084
5085	mask.uintValue = pRenderState[i].uintValue;
5086
5087	red = mask.red;
5088	green = mask.green;
5089	blue = mask.blue;
5090	alpha = mask.alpha;
5091
5092	glColorMask(red, green, blue, alpha);
5093	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5094	break;
5095	}
5096
5097	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5098	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5099	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5100	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
5101	break;
5102
5103	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
5104	enableCap = GL_SCISSOR_TEST;
5105	val = pRenderState[i].uintValue;
5106	break;
5107
5108	#if 0
5109	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5110	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
5111	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
5112	val = pRenderState[i].uintValue;
5113	break;
5114
5115	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
5116	renderState = D3DRS_SPECULARMATERIALSOURCE;
5117	val = pRenderState[i].uintValue;
5118	break;
5119
5120	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
5121	renderState = D3DRS_AMBIENTMATERIALSOURCE;
5122	val = pRenderState[i].uintValue;
5123	break;
5124
5125	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5126	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
5127	val = pRenderState[i].uintValue;
5128	break;
5129	#endif
5130
5131	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
5132	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
5133	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
5134	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
5135	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
5136	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
5137	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
5138	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
5139	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
5140	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
5141	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
5142	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
5143	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
5144	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
5145	break;
5146
5147	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
5148	case SVGA3D_RS_TWEENFACTOR: /* float */
5149	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
5150	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
5151	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
5152	break;
5153
5154	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
5155	enableCap = GL_MULTISAMPLE;
5156	val = pRenderState[i].uintValue;
5157	break;
5158
5159	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
5160	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
5161	break;
5162
5163	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
5164	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
5165	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
5166	/*
5167	renderState = D3DRS_COORDINATETYPE;
5168	val = pRenderState[i].uintValue;
5169	*/
5170	break;
5171
5172	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
5173	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
5174	/* Invert the selected mode because of y-inversion (?) */
5175	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
5176	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5177	break;
5178
5179	case SVGA3D_RS_OUTPUTGAMMA: /* float */
5180	//AssertFailed();
5181	/*
5182	D3DRS_SRGBWRITEENABLE ??
5183	renderState = D3DRS_OUTPUTGAMMA;
5184	val = pRenderState[i].uintValue;
5185	*/
5186	break;
5187
5188	#if 0
5189
5190	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
5191	//AssertFailed();
5192	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
5193	val = pRenderState[i].uintValue;
5194	break;
5195
5196	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
5197	renderState = D3DRS_TEXTUREFACTOR;
5198	val = pRenderState[i].uintValue;
5199	break;
5200
5201	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
5202	renderState = D3DRS_LOCALVIEWER;
5203	val = pRenderState[i].uintValue;
5204	break;
5205
5206	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
5207	AssertFailed();
5208	/*
5209	renderState = D3DRS_ZVISIBLE;
5210	val = pRenderState[i].uintValue;
5211	*/
5212	break;
5213
5214	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
5215	renderState = D3DRS_CLIPPING;
5216	val = pRenderState[i].uintValue;
5217	break;
5218
5219	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
5220	glTexParameter GL_TEXTURE_WRAP_S
5221	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
5222	renderState = D3DRS_WRAP0;
5223	val = pRenderState[i].uintValue;
5224	break;
5225
5226	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
5227	glTexParameter GL_TEXTURE_WRAP_T
5228	renderState = D3DRS_WRAP1;
5229	val = pRenderState[i].uintValue;
5230	break;
5231
5232	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
5233	glTexParameter GL_TEXTURE_WRAP_R
5234	renderState = D3DRS_WRAP2;
5235	val = pRenderState[i].uintValue;
5236	break;
5237
5238
5239	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
5240	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
5241	val = pRenderState[i].uintValue;
5242	break;
5243
5244
5245	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
5246	renderState = D3DRS_BLENDOPALPHA;
5247	val = pRenderState[i].uintValue;
5248	break;
5249
5250	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
5251	AssertFailed();
5252	/*
5253	renderState = D3DRS_TRANSPARENCYANTIALIAS;
5254	val = pRenderState[i].uintValue;
5255	*/
5256	break;
5257
5258	#endif
5259	default:
5260	AssertFailed();
5261	break;
5262	}
5263
5264	if (enableCap != ~(GLenum)0)
5265	{
5266	if (val)
5267	glEnable(enableCap);
5268	else
5269	glDisable(enableCap);
5270	}
5271	}
5272
5273	return VINF_SUCCESS;
5274	}
5275
5276	static DECLCALLBACK(int) vmsvga3dBackSetRenderTarget(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
5277	{
5278	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5279
5280	AssertReturn(pState, VERR_NO_MEMORY);
5281	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
5282
5283	LogFunc(("cid=%u type=%x sid=%u\n", cid, type, target.sid));
5284
5285	PVMSVGA3DCONTEXT pContext;
5286	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5287	AssertRCReturn(rc, rc);
5288
5289	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5290
5291	/* Save for vm state save/restore. */
5292	pContext->state.aRenderTargets[type] = target.sid;
5293
5294	if (target.sid == SVGA3D_INVALID_ID)
5295	{
5296	/* Disable render target. */
5297	switch (type)
5298	{
5299	case SVGA3D_RT_DEPTH:
5300	case SVGA3D_RT_STENCIL:
5301	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
5302	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5303	break;
5304
5305	case SVGA3D_RT_COLOR0:
5306	case SVGA3D_RT_COLOR1:
5307	case SVGA3D_RT_COLOR2:
5308	case SVGA3D_RT_COLOR3:
5309	case SVGA3D_RT_COLOR4:
5310	case SVGA3D_RT_COLOR5:
5311	case SVGA3D_RT_COLOR6:
5312	case SVGA3D_RT_COLOR7:
5313	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
5314	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5315	break;
5316
5317	default:
5318	AssertFailedReturn(VERR_INVALID_PARAMETER);
5319	}
5320	return VINF_SUCCESS;
5321	}
5322
5323	PVMSVGA3DSURFACE pRenderTarget;
5324	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
5325	AssertRCReturn(rc, rc);
5326
5327	switch (type)
5328	{
5329	case SVGA3D_RT_DEPTH:
5330	case SVGA3D_RT_STENCIL:
5331	#if 1
5332	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5333	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5334	{
5335	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
5336	target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->format));
5337	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5338	AssertRCReturn(rc, rc);
5339	}
5340
5341	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5342	Assert(!pRenderTarget->fDirty);
5343
5344	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5345
5346	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
5347	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5348	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
5349	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5350	#else
5351	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
5352	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5353	{
5354	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));
5355	pContext = &pState->SharedCtx;
5356	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5357
5358	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
5359	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5360	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
5361
5362	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5363	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5364
5365	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
5366	pRenderTarget->internalFormatGL,
5367	pRenderTarget->paMipmapLevels[0].mipmapSize.width,
5368	pRenderTarget->paMipmapLevels[0].mipmapSize.height);
5369	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5370
5371	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
5372	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5373
5374	pContext = pState->papContexts[cid];
5375	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5376	}
5377
5378	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5379	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5380	Assert(!pRenderTarget->fDirty);
5381	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5382
5383	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5384
5385	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
5386	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5387	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5388	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5389	#endif
5390	break;
5391
5392	case SVGA3D_RT_COLOR0:
5393	case SVGA3D_RT_COLOR1:
5394	case SVGA3D_RT_COLOR2:
5395	case SVGA3D_RT_COLOR3:
5396	case SVGA3D_RT_COLOR4:
5397	case SVGA3D_RT_COLOR5:
5398	case SVGA3D_RT_COLOR6:
5399	case SVGA3D_RT_COLOR7:
5400	{
5401	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5402	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5403	{
5404	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));
5405	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5406	AssertRCReturn(rc, rc);
5407	}
5408
5409	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5410	Assert(!pRenderTarget->fDirty);
5411
5412	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5413
5414	GLenum textarget;
5415	if (pRenderTarget->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
5416	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5417	else
5418	textarget = GL_TEXTURE_2D;
5419	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5420	textarget, pRenderTarget->oglId.texture, target.mipmap);
5421	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5422
5423	#ifdef DEBUG
5424	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5425	if (status != GL_FRAMEBUFFER_COMPLETE)
5426	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5427	#endif
5428	/** @todo use glDrawBuffers too? */
5429	break;
5430	}
5431
5432	default:
5433	AssertFailedReturn(VERR_INVALID_PARAMETER);
5434	}
5435
5436	return VINF_SUCCESS;
5437	}
5438
5439	#if 0
5440	/**
5441	* Convert SVGA texture combiner value to its D3D equivalent
5442	*/
5443	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5444	{
5445	switch (value)
5446	{
5447	case SVGA3D_TC_DISABLE:
5448	return D3DTOP_DISABLE;
5449	case SVGA3D_TC_SELECTARG1:
5450	return D3DTOP_SELECTARG1;
5451	case SVGA3D_TC_SELECTARG2:
5452	return D3DTOP_SELECTARG2;
5453	case SVGA3D_TC_MODULATE:
5454	return D3DTOP_MODULATE;
5455	case SVGA3D_TC_ADD:
5456	return D3DTOP_ADD;
5457	case SVGA3D_TC_ADDSIGNED:
5458	return D3DTOP_ADDSIGNED;
5459	case SVGA3D_TC_SUBTRACT:
5460	return D3DTOP_SUBTRACT;
5461	case SVGA3D_TC_BLENDTEXTUREALPHA:
5462	return D3DTOP_BLENDTEXTUREALPHA;
5463	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5464	return D3DTOP_BLENDDIFFUSEALPHA;
5465	case SVGA3D_TC_BLENDCURRENTALPHA:
5466	return D3DTOP_BLENDCURRENTALPHA;
5467	case SVGA3D_TC_BLENDFACTORALPHA:
5468	return D3DTOP_BLENDFACTORALPHA;
5469	case SVGA3D_TC_MODULATE2X:
5470	return D3DTOP_MODULATE2X;
5471	case SVGA3D_TC_MODULATE4X:
5472	return D3DTOP_MODULATE4X;
5473	case SVGA3D_TC_DSDT:
5474	AssertFailed(); /** @todo ??? */
5475	return D3DTOP_DISABLE;
5476	case SVGA3D_TC_DOTPRODUCT3:
5477	return D3DTOP_DOTPRODUCT3;
5478	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5479	return D3DTOP_BLENDTEXTUREALPHAPM;
5480	case SVGA3D_TC_ADDSIGNED2X:
5481	return D3DTOP_ADDSIGNED2X;
5482	case SVGA3D_TC_ADDSMOOTH:
5483	return D3DTOP_ADDSMOOTH;
5484	case SVGA3D_TC_PREMODULATE:
5485	return D3DTOP_PREMODULATE;
5486	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5487	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5488	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5489	return D3DTOP_MODULATECOLOR_ADDALPHA;
5490	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5491	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5492	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5493	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5494	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5495	return D3DTOP_BUMPENVMAPLUMINANCE;
5496	case SVGA3D_TC_MULTIPLYADD:
5497	return D3DTOP_MULTIPLYADD;
5498	case SVGA3D_TC_LERP:
5499	return D3DTOP_LERP;
5500	default:
5501	AssertFailed();
5502	return D3DTOP_DISABLE;
5503	}
5504	}
5505
5506	/**
5507	* Convert SVGA texture arg data value to its D3D equivalent
5508	*/
5509	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5510	{
5511	switch (value)
5512	{
5513	case SVGA3D_TA_CONSTANT:
5514	return D3DTA_CONSTANT;
5515	case SVGA3D_TA_PREVIOUS:
5516	return D3DTA_CURRENT; /* current = previous */
5517	case SVGA3D_TA_DIFFUSE:
5518	return D3DTA_DIFFUSE;
5519	case SVGA3D_TA_TEXTURE:
5520	return D3DTA_TEXTURE;
5521	case SVGA3D_TA_SPECULAR:
5522	return D3DTA_SPECULAR;
5523	default:
5524	AssertFailed();
5525	return 0;
5526	}
5527	}
5528
5529	/**
5530	* Convert SVGA texture transform flag value to its D3D equivalent
5531	*/
5532	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5533	{
5534	switch (value)
5535	{
5536	case SVGA3D_TEX_TRANSFORM_OFF:
5537	return D3DTTFF_DISABLE;
5538	case SVGA3D_TEX_TRANSFORM_S:
5539	return D3DTTFF_COUNT1; /** @todo correct? */
5540	case SVGA3D_TEX_TRANSFORM_T:
5541	return D3DTTFF_COUNT2; /** @todo correct? */
5542	case SVGA3D_TEX_TRANSFORM_R:
5543	return D3DTTFF_COUNT3; /** @todo correct? */
5544	case SVGA3D_TEX_TRANSFORM_Q:
5545	return D3DTTFF_COUNT4; /** @todo correct? */
5546	case SVGA3D_TEX_PROJECTED:
5547	return D3DTTFF_PROJECTED;
5548	default:
5549	AssertFailed();
5550	return 0;
5551	}
5552	}
5553	#endif
5554
5555	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5556	{
5557	switch (value)
5558	{
5559	case SVGA3D_TEX_ADDRESS_WRAP:
5560	return GL_REPEAT;
5561	case SVGA3D_TEX_ADDRESS_MIRROR:
5562	return GL_MIRRORED_REPEAT;
5563	case SVGA3D_TEX_ADDRESS_CLAMP:
5564	return GL_CLAMP_TO_EDGE;
5565	case SVGA3D_TEX_ADDRESS_BORDER:
5566	return GL_CLAMP_TO_BORDER;
5567	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5568	AssertFailed();
5569	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5570
5571	case SVGA3D_TEX_ADDRESS_EDGE:
5572	case SVGA3D_TEX_ADDRESS_INVALID:
5573	default:
5574	AssertFailed();
5575	return GL_REPEAT; /* default */
5576	}
5577	}
5578
5579	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5580	{
5581	switch (value)
5582	{
5583	case SVGA3D_TEX_FILTER_NONE:
5584	case SVGA3D_TEX_FILTER_LINEAR:
5585	case SVGA3D_TEX_FILTER_ANISOTROPIC: /* Anisotropic filtering is controlled by SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL */
5586	return GL_LINEAR;
5587	case SVGA3D_TEX_FILTER_NEAREST:
5588	return GL_NEAREST;
5589	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5590	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5591	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5592	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5593	default:
5594	AssertFailed();
5595	return GL_LINEAR; /* default */
5596	}
5597	}
5598
5599	#if 0 /* unused */
5600	static uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5601	{
5602	/* flip the red and blue bytes */
5603	uint8_t blue = value & 0xff;
5604	uint8_t red = (value >> 16) & 0xff;
5605	return (value & 0xff00ff00) \| red \| (blue << 16);
5606	}
5607	#endif
5608
5609	static DECLCALLBACK(int) vmsvga3dBackSetTextureState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5610	{
5611	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5612	GLenum currentStage = ~(GLenum)0;
5613	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5614	AssertReturn(pState, VERR_NO_MEMORY);
5615
5616	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5617
5618	PVMSVGA3DCONTEXT pContext;
5619	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5620	AssertRCReturn(rc, rc);
5621
5622	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5623
5624	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5625	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5626
5627	for (uint32_t i = 0; i < cTextureStates; ++i)
5628	{
5629	GLenum textureType = ~(GLenum)0;
5630	#if 0
5631	GLenum samplerType = ~(GLenum)0;
5632	#endif
5633
5634	LogFunc(("cid=%u stage=%d type=%s (%x) val=%x\n",
5635	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5636
5637	/* Record the texture state for vm state saving. */
5638	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5639	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5640	{
5641	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5642	}
5643
5644	/* Activate the right texture unit for subsequent texture state changes. */
5645	if (pTextureState[i].stage != currentStage \|\| i == 0)
5646	{
5647	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5648	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5649	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5650	{
5651	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5652	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5653	currentStage = pTextureState[i].stage;
5654	}
5655	else
5656	{
5657	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5658	continue;
5659	}
5660
5661	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5662	{
5663	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5664	AssertRCReturn(rc, rc);
5665	}
5666	else
5667	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5668	}
5669
5670	switch (pTextureState[i].name)
5671	{
5672	case SVGA3D_TS_BUMPENVMAT00: /* float */
5673	case SVGA3D_TS_BUMPENVMAT01: /* float */
5674	case SVGA3D_TS_BUMPENVMAT10: /* float */
5675	case SVGA3D_TS_BUMPENVMAT11: /* float */
5676	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5677	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5678	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5679	break;
5680
5681	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5682	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5683	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5684	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5685	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5686	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5687	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5688	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5689	/** @todo not used by MesaGL */
5690	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5691	break;
5692	#if 0
5693
5694	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5695	textureType = D3DTSS_TEXCOORDINDEX;
5696	val = pTextureState[i].value;
5697	break;
5698
5699	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5700	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5701	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5702	break;
5703	#endif
5704
5705	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5706	{
5707	uint32_t const sid = pTextureState[i].value;
5708
5709	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u replacing sid=%u\n",
5710	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5711
5712	/* Only if texture actually changed. */ /// @todo needs testing.
5713	if (pContext->aSidActiveTextures[currentStage] != sid)
5714	{
5715	if (pCurrentTextureSurface)
5716	{
5717	/* Unselect the currently associated texture. */
5718	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5719	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5720
5721	if (currentStage < 8)
5722	{
5723	/* Necessary for the fixed pipeline. */
5724	glDisable(pCurrentTextureSurface->targetGL);
5725	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5726	}
5727
5728	pCurrentTextureSurface = NULL;
5729	}
5730
5731	if (sid == SVGA3D_INVALID_ID)
5732	{
5733	Assert(pCurrentTextureSurface == NULL);
5734	}
5735	else
5736	{
5737	PVMSVGA3DSURFACE pSurface;
5738	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5739	AssertRCReturn(rc, rc);
5740
5741	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u (%d,%d) replacing sid=%u\n",
5742	currentStage, sid, pSurface->paMipmapLevels[0].mipmapSize.width,
5743	pSurface->paMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5744
5745	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5746	{
5747	Log(("CreateTexture (%d,%d) levels=%d\n",
5748	pSurface->paMipmapLevels[0].mipmapSize.width, pSurface->paMipmapLevels[0].mipmapSize.height, pSurface->cLevels));
5749	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
5750	AssertRCReturn(rc, rc);
5751	}
5752
5753	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5754	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5755
5756	if (currentStage < 8)
5757	{
5758	/* Necessary for the fixed pipeline. */
5759	glEnable(pSurface->targetGL);
5760	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5761	}
5762
5763	/* Remember the currently active texture. */
5764	pCurrentTextureSurface = pSurface;
5765
5766	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5767	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5768	{
5769	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5770	{
5771	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5772
5773	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5774	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5775	vmsvga3dBackSetTextureState(pThisCC, pContext->id, 1, pTextureStateIter);
5776	}
5777	}
5778	}
5779
5780	pContext->aSidActiveTextures[currentStage] = sid;
5781	}
5782
5783	/* Finished; continue with the next one. */
5784	continue;
5785	}
5786
5787	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5788	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5789	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5790	break;
5791
5792	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5793	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5794	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5795	break;
5796
5797	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5798	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5799	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5800	break;
5801
5802	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5803	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5804	{
5805	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5806	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5807
5808	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5809	textureType = GL_TEXTURE_MIN_FILTER;
5810	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5811	{
5812	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5813	{
5814	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5815	val = GL_NEAREST_MIPMAP_LINEAR;
5816	else
5817	val = GL_NEAREST_MIPMAP_NEAREST;
5818	}
5819	else
5820	{
5821	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5822	val = GL_LINEAR_MIPMAP_LINEAR;
5823	else
5824	val = GL_LINEAR_MIPMAP_NEAREST;
5825	}
5826	}
5827	else
5828	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5829	break;
5830	}
5831
5832	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5833	textureType = GL_TEXTURE_MAG_FILTER;
5834	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5835	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5836	break;
5837
5838	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5839	{
5840	GLfloat color[4]; /* red, green, blue, alpha */
5841	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5842
5843	GLenum targetGL;
5844	if (pCurrentTextureSurface)
5845	targetGL = pCurrentTextureSurface->targetGL;
5846	else
5847	{
5848	/* No texture bound, assume 2D. */
5849	targetGL = GL_TEXTURE_2D;
5850	}
5851
5852	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5853	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5854	break;
5855	}
5856
5857	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5858	{
5859	GLenum targetGL;
5860	if (pCurrentTextureSurface)
5861	targetGL = pCurrentTextureSurface->targetGL;
5862	else
5863	{
5864	/* No texture bound, assume 2D. */
5865	targetGL = GL_TEXTURE_2D;
5866	}
5867
5868	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5869	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5870	break;
5871	}
5872
5873	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5874	textureType = GL_TEXTURE_BASE_LEVEL;
5875	val = pTextureState[i].value;
5876	break;
5877
5878	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5879	if (pState->caps.fTextureFilterAnisotropicSupported)
5880	{
5881	textureType = GL_TEXTURE_MAX_ANISOTROPY_EXT;
5882	val = RT_MIN((GLint)pTextureState[i].value, pState->caps.maxTextureAnisotropy);
5883	} /* otherwise ignore. */
5884	break;
5885
5886	#if 0
5887	case SVGA3D_TS_GAMMA: /* float */
5888	samplerType = D3DSAMP_SRGBTEXTURE;
5889	/* Boolean in D3D */
5890	if (pTextureState[i].floatValue == 1.0f)
5891	val = FALSE;
5892	else
5893	val = TRUE;
5894	break;
5895	#endif
5896	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5897	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5898	AssertFailed();
5899	break;
5900
5901	default:
5902	//AssertFailed();
5903	break;
5904	}
5905
5906	if (textureType != ~(GLenum)0)
5907	{
5908	GLenum targetGL;
5909	if (pCurrentTextureSurface)
5910	targetGL = pCurrentTextureSurface->targetGL;
5911	else
5912	{
5913	/* No texture bound, assume 2D. */
5914	targetGL = GL_TEXTURE_2D;
5915	}
5916
5917	switch (pTextureState[i].name)
5918	{
5919	case SVGA3D_TS_MINFILTER:
5920	case SVGA3D_TS_MAGFILTER:
5921	{
5922	if (pState->caps.fTextureFilterAnisotropicSupported)
5923	{
5924	uint32_t const anisotropyLevel = (SVGA3dTextureFilter)pTextureState[i].value == SVGA3D_TEX_FILTER_ANISOTROPIC
5925	? RT_MAX(1, pContext->state.aTextureStates[currentStage][SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL].value)
5926	: 1;
5927	glTexParameteri(targetGL, GL_TEXTURE_MAX_ANISOTROPY_EXT, RT_MIN((GLint)anisotropyLevel, pState->caps.maxTextureAnisotropy));
5928	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5929	}
5930	} break;
5931
5932	default: break;
5933	}
5934
5935	glTexParameteri(targetGL, textureType, val);
5936	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5937	}
5938	}
5939
5940	return VINF_SUCCESS;
5941	}
5942
5943	static DECLCALLBACK(int) vmsvga3dBackSetMaterial(PVGASTATECC pThisCC, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5944	{
5945	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5946	AssertReturn(pState, VERR_NO_MEMORY);
5947
5948	LogFunc(("cid=%u face %d\n", cid, face));
5949
5950	PVMSVGA3DCONTEXT pContext;
5951	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5952	AssertRCReturn(rc, rc);
5953
5954	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5955
5956	GLenum oglFace;
5957	switch (face)
5958	{
5959	case SVGA3D_FACE_NONE:
5960	case SVGA3D_FACE_FRONT:
5961	oglFace = GL_FRONT;
5962	break;
5963
5964	case SVGA3D_FACE_BACK:
5965	oglFace = GL_BACK;
5966	break;
5967
5968	case SVGA3D_FACE_FRONT_BACK:
5969	oglFace = GL_FRONT_AND_BACK;
5970	break;
5971
5972	default:
5973	AssertFailedReturn(VERR_INVALID_PARAMETER);
5974	}
5975
5976	/* Save for vm state save/restore. */
5977	pContext->state.aMaterial[face].fValid = true;
5978	pContext->state.aMaterial[face].material = *pMaterial;
5979	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
5980
5981	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
5982	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
5983	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
5984	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
5985	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
5986	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5987
5988	return VINF_SUCCESS;
5989	}
5990
5991	/** @todo Move into separate library as we are using logic from Wine here. */
5992	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
5993	{
5994	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5995	AssertReturn(pState, VERR_NO_MEMORY);
5996
5997	LogFunc(("vmsvga3dSetLightData cid=%u index=%d type=%d\n", cid, index, pData->type));
5998	ASSERT_GUEST_RETURN(index < SVGA3D_MAX_LIGHTS, VERR_INVALID_PARAMETER);
5999
6000	PVMSVGA3DCONTEXT pContext;
6001	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6002	AssertRCReturn(rc, rc);
6003
6004	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6005
6006	/* Store for vm state save/restore */
6007	pContext->state.aLightData[index].fValidData = true;
6008	pContext->state.aLightData[index].data = *pData;
6009
6010	if ( pData->attenuation0 < 0.0f
6011	\|\| pData->attenuation1 < 0.0f
6012	\|\| pData->attenuation2 < 0.0f)
6013	{
6014	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
6015	return VINF_SUCCESS; /* ignore; could crash the GL driver */
6016	}
6017
6018	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
6019	glMatrixMode(GL_MODELVIEW);
6020	glPushMatrix();
6021	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6022
6023	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
6024	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
6025	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
6026
6027	float QuadAttenuation;
6028	if (pData->range * pData->range >= FLT_MIN)
6029	QuadAttenuation = 1.4f / (pData->range * pData->range);
6030	else
6031	QuadAttenuation = 0.0f;
6032
6033	switch (pData->type)
6034	{
6035	case SVGA3D_LIGHTTYPE_POINT:
6036	{
6037	GLfloat position[4];
6038
6039	position[0] = pData->position[0];
6040	position[1] = pData->position[1];
6041	position[2] = pData->position[2];
6042	position[3] = 1.0f;
6043
6044	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6045	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6046
6047	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6048	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6049
6050	/* Attenuation - Are these right? guessing... */
6051	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6052	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6053
6054	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6055	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6056
6057	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6058	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6059
6060	/** @todo range */
6061	break;
6062	}
6063
6064	case SVGA3D_LIGHTTYPE_SPOT1:
6065	{
6066	GLfloat exponent;
6067	GLfloat position[4];
6068	const GLfloat pi = 4.0f * atanf(1.0f);
6069
6070	position[0] = pData->position[0];
6071	position[1] = pData->position[1];
6072	position[2] = pData->position[2];
6073	position[3] = 1.0f;
6074
6075	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6076	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6077
6078	position[0] = pData->direction[0];
6079	position[1] = pData->direction[1];
6080	position[2] = pData->direction[2];
6081	position[3] = 1.0f;
6082
6083	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
6084	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6085
6086	/*
6087	* opengl-ish and d3d-ish spot lights use too different models for the
6088	* light "intensity" as a function of the angle towards the main light direction,
6089	* so we only can approximate very roughly.
6090	* however spot lights are rather rarely used in games (if ever used at all).
6091	* furthermore if still used, probably nobody pays attention to such details.
6092	*/
6093	if (pData->falloff == 0)
6094	{
6095	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
6096	* falloff resp. exponent parameter as an exponent, so the spot light lighting
6097	* will always be 1.0 for both of them, and we don't have to care for the
6098	* rest of the rather complex calculation
6099	*/
6100	exponent = 0.0f;
6101	}
6102	else
6103	{
6104	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
6105	if (rho < 0.0001f)
6106	rho = 0.0001f;
6107	exponent = -0.3f/log(cos(rho/2));
6108	}
6109	if (exponent > 128.0f)
6110	exponent = 128.0f;
6111
6112	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
6113	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6114
6115	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
6116	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6117
6118	/* Attenuation - Are these right? guessing... */
6119	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6120	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6121
6122	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6123	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6124
6125	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6126	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6127
6128	/** @todo range */
6129	break;
6130	}
6131
6132	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
6133	{
6134	GLfloat position[4];
6135
6136	position[0] = -pData->direction[0];
6137	position[1] = -pData->direction[1];
6138	position[2] = -pData->direction[2];
6139	position[3] = 0.0f;
6140
6141	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
6142	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6143
6144	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6145	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6146
6147	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
6148	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6149	break;
6150	}
6151
6152	case SVGA3D_LIGHTTYPE_SPOT2:
6153	default:
6154	Log(("Unsupported light type!!\n"));
6155	rc = VERR_INVALID_PARAMETER;
6156	break;
6157	}
6158
6159	/* Restore the modelview matrix */
6160	glPopMatrix();
6161
6162	return rc;
6163	}
6164
6165	static DECLCALLBACK(int) vmsvga3dBackSetLightEnabled(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, uint32_t enabled)
6166	{
6167	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6168	AssertReturn(pState, VERR_NO_MEMORY);
6169
6170	LogFunc(("cid=%u %d -> %d\n", cid, index, enabled));
6171
6172	PVMSVGA3DCONTEXT pContext;
6173	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6174	AssertRCReturn(rc, rc);
6175
6176	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6177
6178	/* Store for vm state save/restore */
6179	if (index < SVGA3D_MAX_LIGHTS)
6180	pContext->state.aLightData[index].fEnabled = !!enabled;
6181	else
6182	AssertFailed();
6183
6184	if (enabled)
6185	{
6186	if (index < SVGA3D_MAX_LIGHTS)
6187	{
6188	/* Load the default settings if none have been set yet. */
6189	if (!pContext->state.aLightData[index].fValidData)
6190	vmsvga3dBackSetLightData(pThisCC, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
6191	}
6192	glEnable(GL_LIGHT0 + index);
6193	}
6194	else
6195	glDisable(GL_LIGHT0 + index);
6196
6197	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6198	return VINF_SUCCESS;
6199	}
6200
6201	static DECLCALLBACK(int) vmsvga3dBackSetViewPort(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6202	{
6203	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6204	AssertReturn(pState, VERR_NO_MEMORY);
6205
6206	Log(("vmsvga3dSetViewPort cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6207
6208	PVMSVGA3DCONTEXT pContext;
6209	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6210	AssertRCReturn(rc, rc);
6211
6212	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6213
6214	/* Save for vm state save/restore. */
6215	pContext->state.RectViewPort = *pRect;
6216	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
6217
6218	/** @todo y-inversion for partial viewport coordinates? */
6219	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
6220	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6221
6222	/* Reset the projection matrix as that relies on the viewport setting. */
6223	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6224	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION,
6225	pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6226	else
6227	{
6228	float matrix[16];
6229
6230	/* identity matrix if no matrix set. */
6231	memset(matrix, 0, sizeof(matrix));
6232	matrix[0] = 1.0;
6233	matrix[5] = 1.0;
6234	matrix[10] = 1.0;
6235	matrix[15] = 1.0;
6236	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
6237	}
6238
6239	return VINF_SUCCESS;
6240	}
6241
6242	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4])
6243	{
6244	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6245	AssertReturn(pState, VERR_NO_MEMORY);
6246	double oglPlane[4];
6247
6248	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)));
6249	AssertReturn(index < SVGA3D_NUM_CLIPPLANES, VERR_INVALID_PARAMETER);
6250
6251	PVMSVGA3DCONTEXT pContext;
6252	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6253	AssertRCReturn(rc, rc);
6254
6255	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6256
6257	/* Store for vm state save/restore. */
6258	pContext->state.aClipPlane[index].fValid = true;
6259	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
6260
6261	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
6262	oglPlane[0] = (double)plane[0];
6263	oglPlane[1] = (double)plane[1];
6264	oglPlane[2] = (double)plane[2];
6265	oglPlane[3] = (double)plane[3];
6266
6267	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
6268	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6269
6270	return VINF_SUCCESS;
6271	}
6272
6273	static DECLCALLBACK(int) vmsvga3dBackSetScissorRect(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6274	{
6275	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6276	AssertReturn(pState, VERR_NO_MEMORY);
6277
6278	Log(("vmsvga3dSetScissorRect cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6279
6280	PVMSVGA3DCONTEXT pContext;
6281	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6282	AssertRCReturn(rc, rc);
6283
6284	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6285
6286	/* Store for vm state save/restore. */
6287	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
6288	pContext->state.RectScissor = *pRect;
6289
6290	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
6291	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6292
6293	return VINF_SUCCESS;
6294	}
6295
6296	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
6297	{
6298	/* Convert byte color components to float (0-1.0) */
6299	*pAlpha = (GLfloat)(color >> 24) / 255.0;
6300	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
6301	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
6302	*pBlue = (GLfloat)(color & 0xff) / 255.0;
6303	}
6304
6305	static DECLCALLBACK(int) vmsvga3dBackCommandClear(PVGASTATECC pThisCC, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
6306	uint32_t cRects, SVGA3dRect *pRect)
6307	{
6308	GLbitfield mask = 0;
6309	GLbitfield restoreMask = 0;
6310	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6311	AssertReturn(pState, VERR_NO_MEMORY);
6312	GLboolean fDepthWriteEnabled = GL_FALSE;
6313	GLboolean afColorWriteEnabled[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
6314
6315	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));
6316
6317	PVMSVGA3DCONTEXT pContext;
6318	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6319	AssertRCReturn(rc, rc);
6320
6321	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6322
6323	if (clearFlag & SVGA3D_CLEAR_COLOR)
6324	{
6325	GLfloat red, green, blue, alpha;
6326	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
6327
6328	/* Set the color clear value. */
6329	glClearColor(red, green, blue, alpha);
6330	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6331
6332	mask \|= GL_COLOR_BUFFER_BIT;
6333
6334	/* glClear will not clear the color buffer if writing is disabled. */
6335	glGetBooleanv(GL_COLOR_WRITEMASK, afColorWriteEnabled);
6336	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6337	if ( afColorWriteEnabled[0] == GL_FALSE
6338	\|\| afColorWriteEnabled[1] == GL_FALSE
6339	\|\| afColorWriteEnabled[2] == GL_FALSE
6340	\|\| afColorWriteEnabled[3] == GL_FALSE)
6341	{
6342	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
6343	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6344
6345	restoreMask \|= GL_COLOR_BUFFER_BIT;
6346	}
6347
6348	}
6349
6350	if (clearFlag & SVGA3D_CLEAR_STENCIL)
6351	{
6352	/** @todo possibly the same problem as with glDepthMask */
6353	glClearStencil(stencil);
6354	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6355
6356	mask \|= GL_STENCIL_BUFFER_BIT;
6357	}
6358
6359	if (clearFlag & SVGA3D_CLEAR_DEPTH)
6360	{
6361	glClearDepth((GLdouble)depth);
6362	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6363
6364	mask \|= GL_DEPTH_BUFFER_BIT;
6365
6366	/* glClear will not clear the depth buffer if writing is disabled. */
6367	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
6368	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6369	if (fDepthWriteEnabled == GL_FALSE)
6370	{
6371	glDepthMask(GL_TRUE);
6372	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6373
6374	restoreMask \|= GL_DEPTH_BUFFER_BIT;
6375	}
6376	}
6377
6378	/* Save the current scissor test bit and scissor box. */
6379	glPushAttrib(GL_SCISSOR_BIT);
6380	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6381
6382	if (cRects)
6383	{
6384	glEnable(GL_SCISSOR_TEST);
6385	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6386
6387	for (uint32_t i = 0; i < cRects; ++i)
6388	{
6389	LogFunc(("rect [%d] %d,%d %dx%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h));
6390	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
6391	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6392
6393	glClear(mask);
6394	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6395	}
6396	}
6397	else
6398	{
6399	glDisable(GL_SCISSOR_TEST);
6400	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6401
6402	glClear(mask);
6403	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6404	}
6405
6406	/* Restore the old scissor test bit and box */
6407	glPopAttrib();
6408	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6409
6410	/* Restore the write states. */
6411	if (restoreMask & GL_COLOR_BUFFER_BIT)
6412	{
6413	glColorMask(afColorWriteEnabled[0],
6414	afColorWriteEnabled[1],
6415	afColorWriteEnabled[2],
6416	afColorWriteEnabled[3]);
6417	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6418	}
6419
6420	if (restoreMask & GL_DEPTH_BUFFER_BIT)
6421	{
6422	glDepthMask(fDepthWriteEnabled);
6423	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6424	}
6425
6426	return VINF_SUCCESS;
6427	}
6428
6429	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
6430	static int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized, uint32_t &cbAttrib)
6431	{
6432	normalized = GL_FALSE;
6433	switch (identity.type)
6434	{
6435	case SVGA3D_DECLTYPE_FLOAT1:
6436	size = 1;
6437	type = GL_FLOAT;
6438	cbAttrib = sizeof(float);
6439	break;
6440	case SVGA3D_DECLTYPE_FLOAT2:
6441	size = 2;
6442	type = GL_FLOAT;
6443	cbAttrib = 2 * sizeof(float);
6444	break;
6445	case SVGA3D_DECLTYPE_FLOAT3:
6446	size = 3;
6447	type = GL_FLOAT;
6448	cbAttrib = 3 * sizeof(float);
6449	break;
6450	case SVGA3D_DECLTYPE_FLOAT4:
6451	size = 4;
6452	type = GL_FLOAT;
6453	cbAttrib = 4 * sizeof(float);
6454	break;
6455
6456	case SVGA3D_DECLTYPE_D3DCOLOR:
6457	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6458	type = GL_UNSIGNED_BYTE;
6459	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6460	cbAttrib = sizeof(uint32_t);
6461	break;
6462
6463	case SVGA3D_DECLTYPE_UBYTE4N:
6464	normalized = GL_TRUE;
6465	RT_FALL_THRU();
6466	case SVGA3D_DECLTYPE_UBYTE4:
6467	size = 4;
6468	type = GL_UNSIGNED_BYTE;
6469	cbAttrib = sizeof(uint32_t);
6470	break;
6471
6472	case SVGA3D_DECLTYPE_SHORT2N:
6473	normalized = GL_TRUE;
6474	RT_FALL_THRU();
6475	case SVGA3D_DECLTYPE_SHORT2:
6476	size = 2;
6477	type = GL_SHORT;
6478	cbAttrib = 2 * sizeof(uint16_t);
6479	break;
6480
6481	case SVGA3D_DECLTYPE_SHORT4N:
6482	normalized = GL_TRUE;
6483	RT_FALL_THRU();
6484	case SVGA3D_DECLTYPE_SHORT4:
6485	size = 4;
6486	type = GL_SHORT;
6487	cbAttrib = 4 * sizeof(uint16_t);
6488	break;
6489
6490	case SVGA3D_DECLTYPE_USHORT4N:
6491	normalized = GL_TRUE;
6492	size = 4;
6493	type = GL_UNSIGNED_SHORT;
6494	cbAttrib = 4 * sizeof(uint16_t);
6495	break;
6496
6497	case SVGA3D_DECLTYPE_USHORT2N:
6498	normalized = GL_TRUE;
6499	size = 2;
6500	type = GL_UNSIGNED_SHORT;
6501	cbAttrib = 2 * sizeof(uint16_t);
6502	break;
6503
6504	case SVGA3D_DECLTYPE_UDEC3:
6505	size = 3;
6506	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6507	cbAttrib = sizeof(uint32_t);
6508	break;
6509
6510	case SVGA3D_DECLTYPE_DEC3N:
6511	normalized = true;
6512	size = 3;
6513	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6514	cbAttrib = sizeof(uint32_t);
6515	break;
6516
6517	case SVGA3D_DECLTYPE_FLOAT16_2:
6518	size = 2;
6519	type = GL_HALF_FLOAT;
6520	cbAttrib = 2 * sizeof(uint16_t);
6521	break;
6522	case SVGA3D_DECLTYPE_FLOAT16_4:
6523	size = 4;
6524	type = GL_HALF_FLOAT;
6525	cbAttrib = 4 * sizeof(uint16_t);
6526	break;
6527	default:
6528	AssertFailedReturn(VERR_INVALID_PARAMETER);
6529	}
6530
6531	//pVertexElement->Method = identity.method;
6532	//pVertexElement->Usage = identity.usage;
6533
6534	return VINF_SUCCESS;
6535	}
6536
6537	static float vmsvga3dFloat16To32(uint16_t f16)
6538	{
6539	/* From Wiki */
6540	#ifndef INFINITY
6541	static uint32_t const sBitsINFINITY = UINT32_C(0x7f800000);
6542	#define INFINITY ((float const )&sBitsINFINITY)
6543	#endif
6544	#ifndef NAN
6545	static uint32_t const sBitsNAN = UINT32_C(0x7fc00000);
6546	#define NAN ((float const )&sBitsNAN)
6547	#endif
6548
6549	uint16_t const s = (f16 >> UINT16_C(15)) & UINT16_C(0x1);
6550	uint16_t const e = (f16 >> UINT16_C(10)) & UINT16_C(0x1f);
6551	uint16_t const m = (f16 ) & UINT16_C(0x3ff);
6552
6553	float result = s ? 1.0f : -1.0f;
6554	if (e == 0)
6555	{
6556	if (m == 0)
6557	result = 0.0f; / zero, -0 */
6558	else
6559	result = (float)m / 1024.0f / 16384.0f; / subnormal numbers: sign * 2^-14 * 0.m */
6560	}
6561	else if (e == 0x1f)
6562	{
6563	if (m == 0)
6564	result = INFINITY; / +-infinity */
6565	else
6566	result = NAN; /* NAN */
6567	}
6568	else
6569	{
6570	result = powf(2.0f, (float)e - 15.0f) (1.0f + (float)m / 1024.0f); /* sign * 2^(e-15) * 1.m */
6571	}
6572
6573	return result;
6574	}
6575
6576	/* Set a vertex attribute according to VMSVGA vertex declaration. */
6577	static int vmsvga3dSetVertexAttrib(PVMSVGA3DSTATE pState, GLuint index, SVGA3dVertexArrayIdentity const pIdentity, GLvoid const pv)
6578	{
6579	switch (pIdentity->type)
6580	{
6581	case SVGA3D_DECLTYPE_FLOAT1:
6582	{
6583	/* "One-component float expanded to (float, 0, 0, 1)." */
6584	GLfloat const p = (GLfloat )pv;
6585	GLfloat const v[4] = { p[0], 0.0f, 0.0f, 1.0f };
6586	pState->ext.glVertexAttrib4fv(index, v);
6587	break;
6588	}
6589	case SVGA3D_DECLTYPE_FLOAT2:
6590	{
6591	/* "Two-component float expanded to (float, float, 0, 1)." */
6592	GLfloat const p = (GLfloat )pv;
6593	GLfloat const v[4] = { p[0], p[1], 0.0f, 1.0f };
6594	pState->ext.glVertexAttrib4fv(index, v);
6595	break;
6596	}
6597	case SVGA3D_DECLTYPE_FLOAT3:
6598	{
6599	/* "Three-component float expanded to (float, float, float, 1)." */
6600	GLfloat const p = (GLfloat )pv;
6601	GLfloat const v[4] = { p[0], p[1], p[2], 1.0f };
6602	pState->ext.glVertexAttrib4fv(index, v);
6603	break;
6604	}
6605	case SVGA3D_DECLTYPE_FLOAT4:
6606	pState->ext.glVertexAttrib4fv(index, (GLfloat const *)pv);
6607	break;
6608	case SVGA3D_DECLTYPE_D3DCOLOR:
6609	/** @todo Need to swap bytes? */
6610	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6611	break;
6612	case SVGA3D_DECLTYPE_UBYTE4:
6613	pState->ext.glVertexAttrib4ubv(index, (GLubyte const *)pv);
6614	break;
6615	case SVGA3D_DECLTYPE_SHORT2:
6616	{
6617	/* "Two-component, signed short expanded to (value, value, 0, 1)." */
6618	GLshort const p = (GLshort const )pv;
6619	GLshort const v[4] = { p[0], p[1], 0, 1 };
6620	pState->ext.glVertexAttrib4sv(index, v);
6621	break;
6622	}
6623	case SVGA3D_DECLTYPE_SHORT4:
6624	pState->ext.glVertexAttrib4sv(index, (GLshort const *)pv);
6625	break;
6626	case SVGA3D_DECLTYPE_UBYTE4N:
6627	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6628	break;
6629	case SVGA3D_DECLTYPE_SHORT2N:
6630	{
6631	/* "Normalized, two-component, signed short, expanded to (first short/32767.0, second short/32767.0, 0, 1)." */
6632	GLshort const p = (GLshort const )pv;
6633	GLshort const v[4] = { p[0], p[1], 0, 1 };
6634	pState->ext.glVertexAttrib4Nsv(index, v);
6635	break;
6636	}
6637	case SVGA3D_DECLTYPE_SHORT4N:
6638	pState->ext.glVertexAttrib4Nsv(index, (GLshort const *)pv);
6639	break;
6640	case SVGA3D_DECLTYPE_USHORT2N:
6641	{
6642	GLushort const p = (GLushort const )pv;
6643	GLushort const v[4] = { p[0], p[1], 0, 1 };
6644	pState->ext.glVertexAttrib4Nusv(index, v);
6645	break;
6646	}
6647	case SVGA3D_DECLTYPE_USHORT4N:
6648	pState->ext.glVertexAttrib4Nusv(index, (GLushort const *)pv);
6649	break;
6650	case SVGA3D_DECLTYPE_UDEC3:
6651	{
6652	/** @todo Test */
6653	/* "Three-component, unsigned, 10 10 10 format expanded to (value, value, value, 1)." */
6654	uint32_t const u32 = (uint32_t )pv;
6655	GLfloat const v[4] = { (float)(u32 & 0x3ff), (float)((u32 >> 10) & 0x3ff), (float)((u32 >> 20) & 0x3ff), 1.0f };
6656	pState->ext.glVertexAttrib4fv(index, v);
6657	break;
6658	}
6659	case SVGA3D_DECLTYPE_DEC3N:
6660	{
6661	/** @todo Test */
6662	/* "Three-component, signed, 10 10 10 format normalized and expanded to (v[0]/511.0, v[1]/511.0, v[2]/511.0, 1)." */
6663	uint32_t const u32 = (uint32_t )pv;
6664	GLfloat const v[4] = { (float)(u32 & 0x3ff) / 511.0f, (float)((u32 >> 10) & 0x3ff) / 511.0f, (float)((u32 >> 20) & 0x3ff) / 511.0f, 1.0f };
6665	pState->ext.glVertexAttrib4fv(index, v);
6666	break;
6667	}
6668	case SVGA3D_DECLTYPE_FLOAT16_2:
6669	{
6670	/** @todo Test */
6671	/* "Two-component, 16-bit, floating point expanded to (value, value, 0, 1)." */
6672	uint16_t const p = (uint16_t )pv;
6673	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]), 0.0f, 1.0f };
6674	pState->ext.glVertexAttrib4fv(index, v);
6675	break;
6676	}
6677	case SVGA3D_DECLTYPE_FLOAT16_4:
6678	{
6679	/** @todo Test */
6680	uint16_t const p = (uint16_t )pv;
6681	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]),
6682	vmsvga3dFloat16To32(p[2]), vmsvga3dFloat16To32(p[3]) };
6683	pState->ext.glVertexAttrib4fv(index, v);
6684	break;
6685	}
6686	default:
6687	AssertFailedReturn(VERR_INVALID_PARAMETER);
6688	}
6689
6690	return VINF_SUCCESS;
6691	}
6692
6693	/* Convert VMWare primitive type to its OpenGL equivalent. */
6694	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6695	static int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6696	{
6697	switch (PrimitiveType)
6698	{
6699	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6700	*pMode = GL_TRIANGLES;
6701	pcVertices = cPrimitiveCount 3;
6702	break;
6703	case SVGA3D_PRIMITIVE_POINTLIST:
6704	*pMode = GL_POINTS;
6705	*pcVertices = cPrimitiveCount;
6706	break;
6707	case SVGA3D_PRIMITIVE_LINELIST:
6708	*pMode = GL_LINES;
6709	pcVertices = cPrimitiveCount 2;
6710	break;
6711	case SVGA3D_PRIMITIVE_LINESTRIP:
6712	*pMode = GL_LINE_STRIP;
6713	*pcVertices = cPrimitiveCount + 1;
6714	break;
6715	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6716	*pMode = GL_TRIANGLE_STRIP;
6717	*pcVertices = cPrimitiveCount + 2;
6718	break;
6719	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6720	*pMode = GL_TRIANGLE_FAN;
6721	*pcVertices = cPrimitiveCount + 2;
6722	break;
6723	default:
6724	return VERR_INVALID_PARAMETER;
6725	}
6726	return VINF_SUCCESS;
6727	}
6728
6729	static int vmsvga3dResetTransformMatrices(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
6730	{
6731	int rc;
6732
6733	/* Reset the view matrix (also takes the world matrix into account). */
6734	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6735	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW,
6736	pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6737	else
6738	{
6739	float matrix[16];
6740
6741	/* identity matrix if no matrix set. */
6742	memset(matrix, 0, sizeof(matrix));
6743	matrix[0] = 1.0;
6744	matrix[5] = 1.0;
6745	matrix[10] = 1.0;
6746	matrix[15] = 1.0;
6747	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6748	}
6749
6750	/* Reset the projection matrix. */
6751	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6752	{
6753	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6754	}
6755	else
6756	{
6757	float matrix[16];
6758
6759	/* identity matrix if no matrix set. */
6760	memset(matrix, 0, sizeof(matrix));
6761	matrix[0] = 1.0;
6762	matrix[5] = 1.0;
6763	matrix[10] = 1.0;
6764	matrix[15] = 1.0;
6765	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6766	}
6767	AssertRC(rc);
6768	return rc;
6769	}
6770
6771	static int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext,
6772	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6773	SVGA3dVertexDecl *pVertexDecl,
6774	SVGA3dVertexDivisor const *paVertexDivisors)
6775	{
6776	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6777	unsigned const sidVertex = pVertexDecl[0].array.surfaceId;
6778
6779	PVMSVGA3DSURFACE pVertexSurface;
6780	int rc = vmsvga3dSurfaceFromSid(pState, sidVertex, &pVertexSurface);
6781	AssertRCReturn(rc, rc);
6782
6783	Log(("vmsvga3dDrawPrimitives: vertex surface sid=%u\n", sidVertex));
6784
6785	/* Create and/or bind the vertex buffer. */
6786	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6787	{
6788	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->paMipmapLevels[0].cbSurface));
6789	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6790	pContext = &pState->SharedCtx;
6791	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6792
6793	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6794	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6795	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6796
6797	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6798	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6799
6800	Assert(pVertexSurface->fDirty);
6801	/** @todo rethink usage dynamic/static */
6802	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->paMipmapLevels[0].cbSurface, pVertexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6803	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6804
6805	pVertexSurface->paMipmapLevels[0].fDirty = false;
6806	pVertexSurface->fDirty = false;
6807
6808	pVertexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6809
6810	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6811	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6812
6813	pContext = pSavedCtx;
6814	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6815	}
6816
6817	Assert(pVertexSurface->fDirty == false);
6818	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6819	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6820
6821	/* Setup the vertex declarations. */
6822	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6823	{
6824	GLint size;
6825	GLenum type;
6826	GLboolean normalized;
6827	uint32_t cbAttrib;
6828	GLuint index = iVertexDeclBase + iVertex;
6829
6830	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));
6831
6832	rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized, cbAttrib);
6833	AssertRCReturn(rc, rc);
6834
6835	ASSERT_GUEST_RETURN( pVertexSurface->paMipmapLevels[0].cbSurface >= pVertexDecl[iVertex].array.offset
6836	&& pVertexSurface->paMipmapLevels[0].cbSurface - pVertexDecl[iVertex].array.offset >= cbAttrib,
6837	VERR_INVALID_PARAMETER);
6838	RT_UNTRUSTED_VALIDATED_FENCE();
6839
6840	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6841	{
6842	/* Use numbered vertex arrays (or attributes) when shaders are active. */
6843	if (pVertexDecl[iVertex].array.stride)
6844	{
6845	pState->ext.glEnableVertexAttribArray(index);
6846	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6847	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6848	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6849	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6850
6851	GLuint divisor = paVertexDivisors && paVertexDivisors[index].instanceData ? 1 : 0;
6852	pState->ext.glVertexAttribDivisor(index, divisor);
6853	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6854
6855	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6856	}
6857	else
6858	{
6859	/*
6860	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6861	* - D3D (VMSVGA): "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6862	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6863	* VMSVGA uses the D3D semantics.
6864	*
6865	* Use glVertexAttrib in order to tell OpenGL to reuse the zero stride attributes for each vertex.
6866	*/
6867	pState->ext.glDisableVertexAttribArray(index);
6868	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6869
6870	const GLvoid v = (uint8_t )pVertexSurface->paMipmapLevels[0].pSurfaceData + pVertexDecl[iVertex].array.offset;
6871	vmsvga3dSetVertexAttrib(pState, index, &pVertexDecl[iVertex].identity, v);
6872	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6873	}
6874	}
6875	else
6876	{
6877	if (pVertexDecl[iVertex].array.stride == 0)
6878	{
6879	/* Zero stride means that the attribute pointer must not be increased.
6880	* See comment about stride in vmsvga3dDrawPrimitives.
6881	*/
6882	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
6883	AssertFailed();
6884	}
6885
6886	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6887	switch (pVertexDecl[iVertex].identity.usage)
6888	{
6889	case SVGA3D_DECLUSAGE_POSITIONT:
6890	case SVGA3D_DECLUSAGE_POSITION:
6891	{
6892	glEnableClientState(GL_VERTEX_ARRAY);
6893	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6894	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6895	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6896	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6897	break;
6898	}
6899	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6900	AssertFailed();
6901	break;
6902	case SVGA3D_DECLUSAGE_BLENDINDICES:
6903	AssertFailed();
6904	break;
6905	case SVGA3D_DECLUSAGE_NORMAL:
6906	glEnableClientState(GL_NORMAL_ARRAY);
6907	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6908	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6909	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6910	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6911	break;
6912	case SVGA3D_DECLUSAGE_PSIZE:
6913	AssertFailed();
6914	break;
6915	case SVGA3D_DECLUSAGE_TEXCOORD:
6916	/* Specify the affected texture unit. */
6917	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6918	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6919	#else
6920	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6921	#endif
6922	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6923	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6924	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6925	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6926	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6927	break;
6928	case SVGA3D_DECLUSAGE_TANGENT:
6929	AssertFailed();
6930	break;
6931	case SVGA3D_DECLUSAGE_BINORMAL:
6932	AssertFailed();
6933	break;
6934	case SVGA3D_DECLUSAGE_TESSFACTOR:
6935	AssertFailed();
6936	break;
6937	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6938	glEnableClientState(GL_COLOR_ARRAY);
6939	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6940	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6941	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6942	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6943	break;
6944	case SVGA3D_DECLUSAGE_FOG:
6945	glEnableClientState(GL_FOG_COORD_ARRAY);
6946	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6947	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
6948	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6949	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6950	break;
6951	case SVGA3D_DECLUSAGE_DEPTH:
6952	AssertFailed();
6953	break;
6954	case SVGA3D_DECLUSAGE_SAMPLE:
6955	AssertFailed();
6956	break;
6957	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
6958	}
6959	}
6960
6961	#ifdef LOG_ENABLED
6962	if (pVertexDecl[iVertex].array.stride == 0)
6963	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
6964	#endif
6965	}
6966
6967	return VINF_SUCCESS;
6968	}
6969
6970	static int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase,
6971	uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
6972	{
6973	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6974
6975	/* Clean up the vertex declarations. */
6976	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6977	{
6978	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
6979	{
6980	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
6981	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
6982	vmsvga3dResetTransformMatrices(pThisCC, pContext);
6983	}
6984
6985	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6986	{
6987	/* Use numbered vertex arrays when shaders are active. */
6988	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
6989	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6990	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
6991	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6992	}
6993	else
6994	{
6995	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6996	switch (pVertexDecl[iVertex].identity.usage)
6997	{
6998	case SVGA3D_DECLUSAGE_POSITION:
6999	case SVGA3D_DECLUSAGE_POSITIONT:
7000	glDisableClientState(GL_VERTEX_ARRAY);
7001	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7002	break;
7003	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
7004	break;
7005	case SVGA3D_DECLUSAGE_BLENDINDICES:
7006	break;
7007	case SVGA3D_DECLUSAGE_NORMAL:
7008	glDisableClientState(GL_NORMAL_ARRAY);
7009	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7010	break;
7011	case SVGA3D_DECLUSAGE_PSIZE:
7012	break;
7013	case SVGA3D_DECLUSAGE_TEXCOORD:
7014	/* Specify the affected texture unit. */
7015	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
7016	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7017	#else
7018	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7019	#endif
7020	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
7021	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7022	break;
7023	case SVGA3D_DECLUSAGE_TANGENT:
7024	break;
7025	case SVGA3D_DECLUSAGE_BINORMAL:
7026	break;
7027	case SVGA3D_DECLUSAGE_TESSFACTOR:
7028	break;
7029	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
7030	glDisableClientState(GL_COLOR_ARRAY);
7031	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7032	break;
7033	case SVGA3D_DECLUSAGE_FOG:
7034	glDisableClientState(GL_FOG_COORD_ARRAY);
7035	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7036	break;
7037	case SVGA3D_DECLUSAGE_DEPTH:
7038	break;
7039	case SVGA3D_DECLUSAGE_SAMPLE:
7040	break;
7041	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7042	}
7043	}
7044	}
7045	/* Unbind the vertex buffer after usage. */
7046	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7047	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7048	return VINF_SUCCESS;
7049	}
7050
7051	static DECLCALLBACK(int) vmsvga3dBackDrawPrimitives(PVGASTATECC pThisCC, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
7052	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
7053	SVGA3dVertexDivisor *pVertexDivisor)
7054	{
7055	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7056	AssertReturn(pState, VERR_INTERNAL_ERROR);
7057	uint32_t iCurrentVertex;
7058
7059	Log(("vmsvga3dDrawPrimitives cid=%u numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
7060
7061	/* Caller already check these, but it cannot hurt to check again... */
7062	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
7063	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
7064	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
7065
7066	if (!cVertexDivisor)
7067	pVertexDivisor = NULL; /* Be sure. */
7068
7069	PVMSVGA3DCONTEXT pContext;
7070	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7071	AssertRCReturn(rc, rc);
7072
7073	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7074
7075	/* Check for pretransformed vertex declarations. */
7076	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7077	{
7078	switch (pVertexDecl[iVertex].identity.usage)
7079	{
7080	case SVGA3D_DECLUSAGE_POSITIONT:
7081	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
7082	RT_FALL_THRU();
7083	case SVGA3D_DECLUSAGE_POSITION:
7084	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
7085	pContext->state.RectViewPort.h,
7086	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
7087	break;
7088	default: /* Shut up MSC. */ break;
7089	}
7090	}
7091
7092	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
7093	if (pContext->pShaderContext)
7094	{
7095	uint32_t rtHeight = 0;
7096
7097	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
7098	{
7099	PVMSVGA3DSURFACE pRenderTarget;
7100	rc = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pRenderTarget);
7101	AssertRCReturn(rc, rc);
7102
7103	rtHeight = pRenderTarget->paMipmapLevels[0].mipmapSize.height;
7104	}
7105
7106	ShaderUpdateState(pContext->pShaderContext, rtHeight);
7107	}
7108
7109	/* Try to figure out if instancing is used.
7110	* Support simple instancing case with one set of indexed data and one set per-instance data.
7111	*/
7112	uint32_t cInstances = 0;
7113	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
7114	{
7115	if (pVertexDivisor[iVertexDivisor].indexedData)
7116	{
7117	if (cInstances == 0)
7118	cInstances = pVertexDivisor[iVertexDivisor].count;
7119	else
7120	Assert(cInstances == pVertexDivisor[iVertexDivisor].count);
7121	}
7122	else if (pVertexDivisor[iVertexDivisor].instanceData)
7123	{
7124	Assert(pVertexDivisor[iVertexDivisor].count == 1);
7125	}
7126	}
7127
7128	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
7129	iCurrentVertex = 0;
7130	while (iCurrentVertex < numVertexDecls)
7131	{
7132	uint32_t sidVertex = SVGA_ID_INVALID;
7133	uint32_t iVertex;
7134
7135	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7136	{
7137	if ( sidVertex != SVGA_ID_INVALID
7138	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7139	)
7140	break;
7141	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7142	}
7143
7144	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThisCC, pContext, iCurrentVertex, iVertex - iCurrentVertex,
7145	&pVertexDecl[iCurrentVertex], pVertexDivisor);
7146	AssertRCReturn(rc, rc);
7147
7148	iCurrentVertex = iVertex;
7149	}
7150
7151	/* Now draw the primitives. */
7152	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
7153	{
7154	GLenum modeDraw;
7155	unsigned const sidIndex = pRange[iPrimitive].indexArray.surfaceId;
7156	PVMSVGA3DSURFACE pIndexSurface = NULL;
7157	unsigned cVertices;
7158
7159	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
7160	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
7161	if (RT_FAILURE(rc))
7162	{
7163	AssertRC(rc);
7164	goto internal_error;
7165	}
7166
7167	if (sidIndex != SVGA3D_INVALID_ID)
7168	{
7169	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
7170
7171	rc = vmsvga3dSurfaceFromSid(pState, sidIndex, &pIndexSurface);
7172	if (RT_FAILURE(rc))
7173	{
7174	AssertRC(rc);
7175	goto internal_error;
7176	}
7177
7178	Log(("vmsvga3dDrawPrimitives: index surface sid=%u\n", sidIndex));
7179
7180	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
7181	{
7182	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->paMipmapLevels[0].cbSurface));
7183	pContext = &pState->SharedCtx;
7184	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7185
7186	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
7187	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7188	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
7189
7190	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7191	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7192
7193	Assert(pIndexSurface->fDirty);
7194
7195	/** @todo rethink usage dynamic/static */
7196	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->paMipmapLevels[0].cbSurface, pIndexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
7197	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7198
7199	pIndexSurface->paMipmapLevels[0].fDirty = false;
7200	pIndexSurface->fDirty = false;
7201
7202	pIndexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
7203
7204	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
7205	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7206
7207	pContext = pState->papContexts[cid];
7208	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7209	}
7210	Assert(pIndexSurface->fDirty == false);
7211
7212	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7213	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7214	}
7215
7216	if (!pIndexSurface)
7217	{
7218	/* Render without an index buffer */
7219	Log(("DrawPrimitive %d cPrimitives=%d cVertices=%d index index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias, cInstances));
7220	if (cInstances == 0)
7221	{
7222	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
7223	}
7224	else
7225	{
7226	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
7227	}
7228	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7229	}
7230	else
7231	{
7232	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
7233
7234	GLenum indexType;
7235	switch (pRange[iPrimitive].indexWidth)
7236	{
7237	case 1: indexType = GL_UNSIGNED_BYTE; break;
7238	case 2: indexType = GL_UNSIGNED_SHORT; break;
7239	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
7240	RT_FALL_THROUGH();
7241	case 4: indexType = GL_UNSIGNED_INT; break;
7242	}
7243
7244	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));
7245	if (cInstances == 0)
7246	{
7247	/* Render with an index buffer */
7248	if (pRange[iPrimitive].indexBias == 0)
7249	glDrawElements(modeDraw,
7250	cVertices,
7251	indexType,
7252	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
7253	else
7254	pState->ext.glDrawElementsBaseVertex(modeDraw,
7255	cVertices,
7256	indexType,
7257	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7258	pRange[iPrimitive].indexBias); /* basevertex */
7259	}
7260	else
7261	{
7262	/* Render with an index buffer */
7263	if (pRange[iPrimitive].indexBias == 0)
7264	pState->ext.glDrawElementsInstanced(modeDraw,
7265	cVertices,
7266	indexType,
7267	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7268	cInstances);
7269	else
7270	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
7271	cVertices,
7272	indexType,
7273	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7274	cInstances,
7275	pRange[iPrimitive].indexBias); /* basevertex */
7276	}
7277	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7278
7279	/* Unbind the index buffer after usage. */
7280	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
7281	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7282	}
7283	}
7284
7285	internal_error:
7286
7287	/* Deactivate the vertex declarations. */
7288	iCurrentVertex = 0;
7289	while (iCurrentVertex < numVertexDecls)
7290	{
7291	uint32_t sidVertex = SVGA_ID_INVALID;
7292	uint32_t iVertex;
7293
7294	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7295	{
7296	if ( sidVertex != SVGA_ID_INVALID
7297	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7298	)
7299	break;
7300	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7301	}
7302
7303	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThisCC, pContext, iCurrentVertex,
7304	iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
7305	AssertRCReturn(rc, rc);
7306
7307	iCurrentVertex = iVertex;
7308	}
7309
7310	#ifdef DEBUG
7311	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
7312	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
7313	{
7314	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
7315	{
7316	PVMSVGA3DSURFACE pTexture;
7317	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
7318	AssertContinue(RT_SUCCESS(rc2));
7319
7320	GLint activeTextureUnit = 0;
7321	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
7322	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7323
7324	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
7325	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7326
7327	GLint activeTexture = 0;
7328	glGetIntegerv(pTexture->bindingGL, &activeTexture);
7329	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7330
7331	pState->ext.glActiveTexture(activeTextureUnit);
7332	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7333
7334	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
7335	("%d vs %d unit %d (active unit %d) sid=%u\n", pTexture->oglId.texture, activeTexture, i,
7336	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
7337	}
7338	}
7339	#endif
7340
7341	#if 0
7342	/* Dump render target to a bitmap. */
7343	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
7344	{
7345	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
7346	PVMSVGA3DSURFACE pSurface;
7347	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
7348	if (RT_SUCCESS(rc2))
7349	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post");
7350	# if 0
7351	/* Stage 0 texture. */
7352	if (pContext->aSidActiveTextures[0] != SVGA3D_INVALID_ID)
7353	{
7354	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->aSidActiveTextures[0]);
7355	rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[0], &pSurface);
7356	if (RT_SUCCESS(rc2))
7357	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post-tx");
7358	}
7359	# endif
7360	}
7361	#endif
7362
7363	return rc;
7364	}
7365
7366
7367	static DECLCALLBACK(int) vmsvga3dBackShaderDefine(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
7368	{
7369	PVMSVGA3DSHADER pShader;
7370	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7371	AssertReturn(pState, VERR_NO_MEMORY);
7372
7373	Log(("vmsvga3dShaderDefine cid=%u shid=%d type=%s cbData=0x%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
7374
7375	PVMSVGA3DCONTEXT pContext;
7376	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7377	AssertRCReturn(rc, rc);
7378
7379	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
7380
7381	rc = vmsvga3dShaderParse(type, cbData, pShaderData);
7382	if (RT_FAILURE(rc))
7383	{
7384	AssertRC(rc);
7385	vmsvga3dShaderLogRel("Failed to parse", type, cbData, pShaderData);
7386	return rc;
7387	}
7388
7389	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7390
7391	if (type == SVGA3D_SHADERTYPE_VS)
7392	{
7393	if (shid >= pContext->cVertexShaders)
7394	{
7395	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7396	AssertReturn(pvNew, VERR_NO_MEMORY);
7397	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
7398	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
7399	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
7400	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
7401	pContext->cVertexShaders = shid + 1;
7402	}
7403	/* If one already exists with this id, then destroy it now. */
7404	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
7405	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paVertexShader[shid].type);
7406
7407	pShader = &pContext->paVertexShader[shid];
7408	}
7409	else
7410	{
7411	Assert(type == SVGA3D_SHADERTYPE_PS);
7412	if (shid >= pContext->cPixelShaders)
7413	{
7414	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7415	AssertReturn(pvNew, VERR_NO_MEMORY);
7416	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
7417	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
7418	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
7419	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
7420	pContext->cPixelShaders = shid + 1;
7421	}
7422	/* If one already exists with this id, then destroy it now. */
7423	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
7424	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paPixelShader[shid].type);
7425
7426	pShader = &pContext->paPixelShader[shid];
7427	}
7428
7429	memset(pShader, 0, sizeof(*pShader));
7430	pShader->id = shid;
7431	pShader->cid = cid;
7432	pShader->type = type;
7433	pShader->cbData = cbData;
7434	pShader->pShaderProgram = RTMemAllocZ(cbData);
7435	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
7436	memcpy(pShader->pShaderProgram, pShaderData, cbData);
7437
7438	#ifdef DUMP_SHADER_DISASSEMBLY
7439	LPD3DXBUFFER pDisassembly;
7440	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
7441	if (hr == D3D_OK)
7442	{
7443	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
7444	pDisassembly->Release();
7445	}
7446	#endif
7447
7448	switch (type)
7449	{
7450	case SVGA3D_SHADERTYPE_VS:
7451	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pVertexShader);
7452	AssertRC(rc);
7453	break;
7454
7455	case SVGA3D_SHADERTYPE_PS:
7456	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pPixelShader);
7457	AssertRC(rc);
7458	break;
7459
7460	default:
7461	AssertFailedReturn(VERR_INVALID_PARAMETER);
7462	}
7463	if (rc != VINF_SUCCESS)
7464	{
7465	vmsvga3dShaderLogRel("Failed to create", type, cbData, pShaderData);
7466
7467	RTMemFree(pShader->pShaderProgram);
7468	memset(pShader, 0, sizeof(*pShader));
7469	pShader->id = SVGA3D_INVALID_ID;
7470	}
7471
7472	return rc;
7473	}
7474
7475	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
7476	{
7477	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7478	AssertReturn(pState, VERR_NO_MEMORY);
7479	PVMSVGA3DSHADER pShader = NULL;
7480
7481	Log(("vmsvga3dShaderDestroy cid=%u shid=%d type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
7482
7483	PVMSVGA3DCONTEXT pContext;
7484	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7485	AssertRCReturn(rc, rc);
7486
7487	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7488
7489	if (type == SVGA3D_SHADERTYPE_VS)
7490	{
7491	if ( shid < pContext->cVertexShaders
7492	&& pContext->paVertexShader[shid].id == shid)
7493	{
7494	pShader = &pContext->paVertexShader[shid];
7495	if (pContext->state.shidVertex == shid)
7496	{
7497	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7498	AssertRC(rc);
7499	}
7500
7501	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7502	AssertRC(rc);
7503	}
7504	}
7505	else
7506	{
7507	Assert(type == SVGA3D_SHADERTYPE_PS);
7508	if ( shid < pContext->cPixelShaders
7509	&& pContext->paPixelShader[shid].id == shid)
7510	{
7511	pShader = &pContext->paPixelShader[shid];
7512	if (pContext->state.shidPixel == shid)
7513	{
7514	ShaderSetPixelShader(pContext->pShaderContext, NULL);
7515	AssertRC(rc);
7516	}
7517
7518	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7519	AssertRC(rc);
7520	}
7521	}
7522
7523	if (pShader)
7524	{
7525	if (pShader->pShaderProgram)
7526	RTMemFree(pShader->pShaderProgram);
7527	memset(pShader, 0, sizeof(*pShader));
7528	pShader->id = SVGA3D_INVALID_ID;
7529	}
7530	else
7531	AssertFailedReturn(VERR_INVALID_PARAMETER);
7532
7533	return VINF_SUCCESS;
7534	}
7535
7536	static DECLCALLBACK(int) vmsvga3dBackShaderSet(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
7537	{
7538	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7539	AssertReturn(pState, VERR_NO_MEMORY);
7540	int rc;
7541
7542	Log(("vmsvga3dShaderSet cid=%u type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
7543
7544	if (!pContext)
7545	{
7546	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7547	AssertRCReturn(rc, rc);
7548	}
7549
7550	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7551
7552	if (type == SVGA3D_SHADERTYPE_VS)
7553	{
7554	/* Save for vm state save/restore. */
7555	pContext->state.shidVertex = shid;
7556	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
7557
7558	if ( shid < pContext->cVertexShaders
7559	&& pContext->paVertexShader[shid].id == shid)
7560	{
7561	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
7562	Assert(type == pShader->type);
7563
7564	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7565	AssertRCReturn(rc, rc);
7566	}
7567	else
7568	if (shid == SVGA_ID_INVALID)
7569	{
7570	/* Unselect shader. */
7571	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7572	AssertRCReturn(rc, rc);
7573	}
7574	else
7575	AssertFailedReturn(VERR_INVALID_PARAMETER);
7576	}
7577	else
7578	{
7579	/* Save for vm state save/restore. */
7580	pContext->state.shidPixel = shid;
7581	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
7582
7583	Assert(type == SVGA3D_SHADERTYPE_PS);
7584	if ( shid < pContext->cPixelShaders
7585	&& pContext->paPixelShader[shid].id == shid)
7586	{
7587	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
7588	Assert(type == pShader->type);
7589
7590	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7591	AssertRCReturn(rc, rc);
7592	}
7593	else
7594	if (shid == SVGA_ID_INVALID)
7595	{
7596	/* Unselect shader. */
7597	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
7598	AssertRCReturn(rc, rc);
7599	}
7600	else
7601	AssertFailedReturn(VERR_INVALID_PARAMETER);
7602	}
7603
7604	return VINF_SUCCESS;
7605	}
7606
7607	static DECLCALLBACK(int) vmsvga3dBackShaderSetConst(PVGASTATECC pThisCC, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
7608	{
7609	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7610	AssertReturn(pState, VERR_NO_MEMORY);
7611
7612	Log(("vmsvga3dShaderSetConst cid=%u reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
7613
7614	PVMSVGA3DCONTEXT pContext;
7615	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7616	AssertRCReturn(rc, rc);
7617
7618	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7619
7620	for (uint32_t i = 0; i < cRegisters; i++)
7621	{
7622	#ifdef LOG_ENABLED
7623	switch (ctype)
7624	{
7625	case SVGA3D_CONST_TYPE_FLOAT:
7626	{
7627	float pValuesF = (float )pValues;
7628	Log(("ConstantF %d: value=" FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR "\n",
7629	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])));
7630	break;
7631	}
7632
7633	case SVGA3D_CONST_TYPE_INT:
7634	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7635	break;
7636
7637	case SVGA3D_CONST_TYPE_BOOL:
7638	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7639	break;
7640
7641	default:
7642	AssertFailedReturn(VERR_INVALID_PARAMETER);
7643	}
7644	#endif
7645	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
7646	}
7647
7648	switch (type)
7649	{
7650	case SVGA3D_SHADERTYPE_VS:
7651	switch (ctype)
7652	{
7653	case SVGA3D_CONST_TYPE_FLOAT:
7654	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7655	break;
7656
7657	case SVGA3D_CONST_TYPE_INT:
7658	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7659	break;
7660
7661	case SVGA3D_CONST_TYPE_BOOL:
7662	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7663	break;
7664
7665	default:
7666	AssertFailedReturn(VERR_INVALID_PARAMETER);
7667	}
7668	AssertRCReturn(rc, rc);
7669	break;
7670
7671	case SVGA3D_SHADERTYPE_PS:
7672	switch (ctype)
7673	{
7674	case SVGA3D_CONST_TYPE_FLOAT:
7675	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7676	break;
7677
7678	case SVGA3D_CONST_TYPE_INT:
7679	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7680	break;
7681
7682	case SVGA3D_CONST_TYPE_BOOL:
7683	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7684	break;
7685
7686	default:
7687	AssertFailedReturn(VERR_INVALID_PARAMETER);
7688	}
7689	AssertRCReturn(rc, rc);
7690	break;
7691
7692	default:
7693	AssertFailedReturn(VERR_INVALID_PARAMETER);
7694	}
7695
7696	return VINF_SUCCESS;
7697	}
7698
7699	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryCreate(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7700	{
7701	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7702	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7703	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7704
7705	GLuint idQuery = 0;
7706	pState->ext.glGenQueries(1, &idQuery);
7707	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7708	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7709	pContext->occlusion.idQuery = idQuery;
7710	return VINF_SUCCESS;
7711	}
7712
7713	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7714	{
7715	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7716	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7717	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7718
7719	if (pContext->occlusion.idQuery)
7720	{
7721	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7722	}
7723	return VINF_SUCCESS;
7724	}
7725
7726	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryBegin(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7727	{
7728	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7729	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7730	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7731
7732	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7733	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7734	return VINF_SUCCESS;
7735	}
7736
7737	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryEnd(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7738	{
7739	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7740	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7741	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7742
7743	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7744	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7745	return VINF_SUCCESS;
7746	}
7747
7748	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryGetData(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7749	{
7750	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7751	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7752	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7753
7754	GLuint pixels = 0;
7755	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7756	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7757
7758	*pu32Pixels = (uint32_t)pixels;
7759	return VINF_SUCCESS;
7760	}
7761
7762	/**
7763	* Worker for vmsvga3dUpdateHeapBuffersForSurfaces.
7764	*
7765	* This will allocate heap buffers if necessary, thus increasing the memory
7766	* usage of the process.
7767	*
7768	* @todo Would be interesting to share this code with the saved state code.
7769	*
7770	* @returns VBox status code.
7771	* @param pThisCC The VGA/VMSVGA context.
7772	* @param pSurface The surface to refresh the heap buffers for.
7773	*/
7774	static DECLCALLBACK(int) vmsvga3dBackSurfaceUpdateHeapBuffers(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
7775	{
7776	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7777	AssertReturn(pState, VERR_INVALID_STATE);
7778
7779	/*
7780	* Currently we've got trouble retreving bit for DEPTHSTENCIL
7781	* surfaces both for OpenGL and D3D, so skip these here (don't
7782	* wast memory on them).
7783	*/
7784	uint32_t const fSwitchFlags = pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK;
7785	if ( fSwitchFlags != SVGA3D_SURFACE_HINT_DEPTHSTENCIL
7786	&& fSwitchFlags != (SVGA3D_SURFACE_HINT_DEPTHSTENCIL \| SVGA3D_SURFACE_HINT_TEXTURE))
7787	{
7788	/*
7789	* Change OpenGL context to the one the surface is associated with.
7790	*/
7791	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
7792	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7793
7794	/*
7795	* Work thru each mipmap level for each face.
7796	*/
7797	for (uint32_t iFace = 0; iFace < pSurface->cFaces; iFace++)
7798	{
7799	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[iFace * pSurface->cLevels];
7800	for (uint32_t i = 0; i < pSurface->cLevels; i++, pMipmapLevel++)
7801	{
7802	if (VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
7803	{
7804	Assert(pMipmapLevel->cbSurface);
7805	Assert(pMipmapLevel->cbSurface == pMipmapLevel->cbSurfacePlane * pMipmapLevel->mipmapSize.depth);
7806
7807	/*
7808	* Make sure we've got surface memory buffer.
7809	*/
7810	uint8_t pbDst = (uint8_t )pMipmapLevel->pSurfaceData;
7811	if (!pbDst)
7812	{
7813	pMipmapLevel->pSurfaceData = pbDst = (uint8_t *)RTMemAllocZ(pMipmapLevel->cbSurface);
7814	AssertReturn(pbDst, VERR_NO_MEMORY);
7815	}
7816
7817	/*
7818	* OpenGL specifics.
7819	*/
7820	switch (pSurface->enmOGLResType)
7821	{
7822	case VMSVGA3D_OGLRESTYPE_TEXTURE:
7823	{
7824	GLint activeTexture;
7825	glGetIntegerv(GL_TEXTURE_BINDING_2D, &activeTexture);
7826	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7827
7828	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
7829	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7830
7831	/* Set row length and alignment of the output data. */
7832	VMSVGAPACKPARAMS SavedParams;
7833	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
7834
7835	glGetTexImage(GL_TEXTURE_2D,
7836	i,
7837	pSurface->formatGL,
7838	pSurface->typeGL,
7839	pbDst);
7840	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7841
7842	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
7843
7844	/* Restore the old active texture. */
7845	glBindTexture(GL_TEXTURE_2D, activeTexture);
7846	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7847	break;
7848	}
7849
7850	case VMSVGA3D_OGLRESTYPE_BUFFER:
7851	{
7852	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
7853	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7854
7855	void *pvSrc = pState->ext.glMapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
7856	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7857	if (RT_VALID_PTR(pvSrc))
7858	memcpy(pbDst, pvSrc, pMipmapLevel->cbSurface);
7859	else
7860	AssertPtr(pvSrc);
7861
7862	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
7863	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7864
7865	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7866	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7867	break;
7868	}
7869
7870	default:
7871	AssertMsgFailed(("%#x\n", fSwitchFlags));
7872	}
7873	}
7874	/* else: There is no data in hardware yet, so whatever we got is already current. */
7875	}
7876	}
7877	}
7878
7879	return VINF_SUCCESS;
7880	}
7881
7882	static DECLCALLBACK(int) vmsvga3dBackQueryInterface(PVGASTATECC pThisCC, char const pszInterfaceName, void pvInterfaceFuncs, size_t cbInterfaceFuncs)
7883	{
7884	RT_NOREF(pThisCC);
7885
7886	int rc = VINF_SUCCESS;
7887	if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_3D) == 0)
7888	{
7889	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCS3D))
7890	{
7891	if (pvInterfaceFuncs)
7892	{
7893	VMSVGA3DBACKENDFUNCS3D p = (VMSVGA3DBACKENDFUNCS3D )pvInterfaceFuncs;
7894	p->pfnInit = vmsvga3dBackInit;
7895	p->pfnPowerOn = vmsvga3dBackPowerOn;
7896	p->pfnTerminate = vmsvga3dBackTerminate;
7897	p->pfnReset = vmsvga3dBackReset;
7898	p->pfnQueryCaps = vmsvga3dBackQueryCaps;
7899	p->pfnChangeMode = vmsvga3dBackChangeMode;
7900	p->pfnCreateTexture = vmsvga3dBackCreateTexture;
7901	p->pfnSurfaceDestroy = vmsvga3dBackSurfaceDestroy;
7902	p->pfnSurfaceInvalidateImage = vmsvga3dBackSurfaceInvalidateImage;
7903	p->pfnSurfaceCopy = vmsvga3dBackSurfaceCopy;
7904	p->pfnSurfaceDMACopyBox = vmsvga3dBackSurfaceDMACopyBox;
7905	p->pfnSurfaceStretchBlt = vmsvga3dBackSurfaceStretchBlt;
7906	p->pfnUpdateHostScreenViewport = vmsvga3dBackUpdateHostScreenViewport;
7907	p->pfnDefineScreen = vmsvga3dBackDefineScreen;
7908	p->pfnDestroyScreen = vmsvga3dBackDestroyScreen;
7909	p->pfnSurfaceBlitToScreen = vmsvga3dBackSurfaceBlitToScreen;
7910	p->pfnSurfaceUpdateHeapBuffers = vmsvga3dBackSurfaceUpdateHeapBuffers;
7911	}
7912	}
7913	else
7914	{
7915	AssertFailed();
7916	rc = VERR_INVALID_PARAMETER;
7917	}
7918	}
7919	else if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_VGPU9) == 0)
7920	{
7921	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCSVGPU9))
7922	{
7923	if (pvInterfaceFuncs)
7924	{
7925	VMSVGA3DBACKENDFUNCSVGPU9 p = (VMSVGA3DBACKENDFUNCSVGPU9 )pvInterfaceFuncs;
7926	p->pfnContextDefine = vmsvga3dBackContextDefine;
7927	p->pfnContextDestroy = vmsvga3dBackContextDestroy;
7928	p->pfnSetTransform = vmsvga3dBackSetTransform;
7929	p->pfnSetZRange = vmsvga3dBackSetZRange;
7930	p->pfnSetRenderState = vmsvga3dBackSetRenderState;
7931	p->pfnSetRenderTarget = vmsvga3dBackSetRenderTarget;
7932	p->pfnSetTextureState = vmsvga3dBackSetTextureState;
7933	p->pfnSetMaterial = vmsvga3dBackSetMaterial;
7934	p->pfnSetLightData = vmsvga3dBackSetLightData;
7935	p->pfnSetLightEnabled = vmsvga3dBackSetLightEnabled;
7936	p->pfnSetViewPort = vmsvga3dBackSetViewPort;
7937	p->pfnSetClipPlane = vmsvga3dBackSetClipPlane;
7938	p->pfnCommandClear = vmsvga3dBackCommandClear;
7939	p->pfnDrawPrimitives = vmsvga3dBackDrawPrimitives;
7940	p->pfnSetScissorRect = vmsvga3dBackSetScissorRect;
7941	p->pfnGenerateMipmaps = vmsvga3dBackGenerateMipmaps;
7942	p->pfnShaderDefine = vmsvga3dBackShaderDefine;
7943	p->pfnShaderDestroy = vmsvga3dBackShaderDestroy;
7944	p->pfnShaderSet = vmsvga3dBackShaderSet;
7945	p->pfnShaderSetConst = vmsvga3dBackShaderSetConst;
7946	p->pfnOcclusionQueryCreate = vmsvga3dBackOcclusionQueryCreate;
7947	p->pfnOcclusionQueryDelete = vmsvga3dBackOcclusionQueryDelete;
7948	p->pfnOcclusionQueryBegin = vmsvga3dBackOcclusionQueryBegin;
7949	p->pfnOcclusionQueryEnd = vmsvga3dBackOcclusionQueryEnd;
7950	p->pfnOcclusionQueryGetData = vmsvga3dBackOcclusionQueryGetData;
7951	}
7952	}
7953	else
7954	{
7955	AssertFailed();
7956	rc = VERR_INVALID_PARAMETER;
7957	}
7958	}
7959	else
7960	rc = VERR_NOT_IMPLEMENTED;
7961	return rc;
7962	}
7963
7964
7965	extern VMSVGA3DBACKENDDESC const g_BackendLegacy =
7966	{
7967	"LEGACY",
7968	vmsvga3dBackQueryInterface
7969	};

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

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