DevVGA-SVGA3d-ogl.cpp@ 94377

Last change on this file since 94377 was 94063, checked in by vboxsync, 3 years ago
Devices/Graphics: shader resource and render target views should be set before a Draw call; resource view cleanup: bugref:9830
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 309.6 KB

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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 94063 2022-03-02 15:41:38Z vboxsync $ */
2	/** @file
3	* DevVMWare - VMWare SVGA device
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	/* Enable to disassemble defined shaders. (Windows host only) */
23	#if defined(RT_OS_WINDOWS) && defined(DEBUG) && 0 /* Disabled as we don't have the DirectX SDK avaible atm. */
24	# define DUMP_SHADER_DISASSEMBLY
25	#endif
26	#ifdef DEBUG_bird
27	//# define RTMEM_WRAP_TO_EF_APIS
28	#endif
29	#define LOG_GROUP LOG_GROUP_DEV_VMSVGA
30	#define GL_SILENCE_DEPRECATION /* shut up deprecated warnings on darwin (10.15 sdk) */
31	#include <VBox/vmm/pdmdev.h>
32	#include <VBox/version.h>
33	#include <VBox/err.h>
34	#include <VBox/log.h>
35	#include <VBox/vmm/pgm.h>
36	#include <VBox/AssertGuest.h>
37
38	#include <iprt/assert.h>
39	#include <iprt/semaphore.h>
40	#include <iprt/uuid.h>
41	#include <iprt/mem.h>
42
43	#include <VBoxVideo.h> /* required by DevVGA.h */
44	#include <VBoxVideo3D.h>
45
46	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
47	#include "DevVGA.h"
48
49	#include "DevVGA-SVGA.h"
50	#include "DevVGA-SVGA3d.h"
51	#include "DevVGA-SVGA3d-internal.h"
52
53	#ifdef DUMP_SHADER_DISASSEMBLY
54	# include <d3dx9shader.h>
55	#endif
56
57	#include <stdlib.h>
58	#include <math.h>
59	#include <float.h> /* FLT_MIN */
60
61
62	/*********************************************************************************************************************************
63	* Defined Constants And Macros *
64	*********************************************************************************************************************************/
65	#ifndef VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE
66	# define VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE 1.0
67	#endif
68
69	#ifdef VMSVGA3D_DYNAMIC_LOAD
70	# define OGLGETPROCADDRESS glLdrGetProcAddress
71	#else
72	#ifdef RT_OS_WINDOWS
73	# define OGLGETPROCADDRESS MyWinGetProcAddress
74	DECLINLINE(PROC) MyWinGetProcAddress(const char *pszSymbol)
75	{
76	/* Khronos: [on failure] "some implementations will return other values. 1, 2, and 3 are used, as well as -1". */
77	PROC p = wglGetProcAddress(pszSymbol);
78	if (RT_VALID_PTR(p))
79	return p;
80	return 0;
81	}
82	#elif defined(RT_OS_DARWIN)
83	# include <dlfcn.h>
84	# define OGLGETPROCADDRESS MyNSGLGetProcAddress
85	/** Resolves an OpenGL symbol. */
86	static void MyNSGLGetProcAddress(const char pszSymbol)
87	{
88	/* Another copy in shaderapi.c. */
89	static void *s_pvImage = NULL;
90	if (s_pvImage == NULL)
91	s_pvImage = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
92	return s_pvImage ? dlsym(s_pvImage, pszSymbol) : NULL;
93	}
94
95	#else
96	# define OGLGETPROCADDRESS(x) glXGetProcAddress((const GLubyte *)x)
97	#endif
98	#endif
99
100	/* Invert y-coordinate for OpenGL's bottom left origin. */
101	#define D3D_TO_OGL_Y_COORD(ptrSurface, y_coordinate) (ptrSurface->paMipmapLevels[0].mipmapSize.height - (y_coordinate))
102	#define D3D_TO_OGL_Y_COORD_MIPLEVEL(ptrMipLevel, y_coordinate) (ptrMipLevel->size.height - (y_coordinate))
103
104	/**
105	* Macro for doing something and then checking for errors during initialization.
106	* Uses AssertLogRelMsg.
107	*/
108	#define VMSVGA3D_INIT_CHECKED(a_Expr) \
109	do \
110	{ \
111	a_Expr; \
112	GLenum iGlError = glGetError(); \
113	AssertLogRelMsg(iGlError == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x\n", #a_Expr, iGlError)); \
114	} while (0)
115
116	/**
117	* Macro for doing something and then checking for errors during initialization,
118	* doing the same in the other context when enabled.
119	*
120	* This will try both profiles in dual profile builds. Caller must be in the
121	* default context.
122	*
123	* Uses AssertLogRelMsg to indicate trouble.
124	*/
125	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
126	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) \
127	do \
128	{ \
129	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
130	a_Expr; \
131	GLenum iGlError = glGetError(); \
132	if (iGlError != GL_NO_ERROR) \
133	{ \
134	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pOtherCtx); \
135	for (uint32_t i = 0; i < 64; i++) if (glGetError() == GL_NO_ERROR) break; Assert(glGetError() == GL_NO_ERROR); \
136	a_Expr; \
137	GLenum iGlError2 = glGetError(); \
138	AssertLogRelMsg(iGlError2 == GL_NO_ERROR, ("VMSVGA3d: %s -> %#x / %#x\n", #a_Expr, iGlError, iGlError2)); \
139	VMSVGA3D_SET_CURRENT_CONTEXT(a_pState, a_pContext); \
140	} \
141	} while (0)
142	#else
143	# define VMSVGA3D_INIT_CHECKED_BOTH(a_pState, a_pContext, a_pOtherCtx, a_Expr) VMSVGA3D_INIT_CHECKED(a_Expr)
144	#endif
145
146
147	/*********************************************************************************************************************************
148	* Global Variables *
149	*********************************************************************************************************************************/
150	/* Define the default light parameters as specified by MSDN. */
151	/** @todo move out; fetched from Wine */
152	const SVGA3dLightData vmsvga3d_default_light =
153	{
154	SVGA3D_LIGHTTYPE_DIRECTIONAL, /* type */
155	false, /* inWorldSpace */
156	{ 1.0f, 1.0f, 1.0f, 0.0f }, /* diffuse r,g,b,a */
157	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* specular r,g,b,a */
158	{ 0.0f, 0.0f, 0.0f, 0.0f }, /* ambient r,g,b,a, */
159	{ 0.0f, 0.0f, 0.0f }, /* position x,y,z */
160	{ 0.0f, 0.0f, 1.0f }, /* direction x,y,z */
161	0.0f, /* range */
162	0.0f, /* falloff */
163	0.0f, 0.0f, 0.0f, /* attenuation 0,1,2 */
164	0.0f, /* theta */
165	0.0f /* phi */
166	};
167
168
169	/*********************************************************************************************************************************
170	* Internal Functions *
171	*********************************************************************************************************************************/
172	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid);
173	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid);
174	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha);
175	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData);
176	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4]);
177	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type);
178	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext);
179	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext, PVMSVGA3DSURFACE pSurface);
180
181	/* Generated by VBoxDef2LazyLoad from the VBoxSVGA3D.def and VBoxSVGA3DObjC.def files. */
182	extern "C" int ExplicitlyLoadVBoxSVGA3D(bool fResolveAllImports, PRTERRINFO pErrInfo);
183
184
185	/**
186	* Checks if the given OpenGL extension is supported.
187	*
188	* @returns true if supported, false if not.
189	* @param pState The VMSVGA3d state.
190	* @param rsMinGLVersion The OpenGL version that introduced this feature
191	* into the core.
192	* @param pszWantedExtension The name of the OpenGL extension we want padded
193	* with one space at each end.
194	* @remarks Init time only.
195	*/
196	static bool vmsvga3dCheckGLExtension(PVMSVGA3DSTATE pState, float rsMinGLVersion, const char *pszWantedExtension)
197	{
198	RT_NOREF(rsMinGLVersion);
199	/* check padding. */
200	Assert(pszWantedExtension[0] == ' ');
201	Assert(pszWantedExtension[1] != ' ');
202	Assert(strchr(&pszWantedExtension[1], ' ') + 1 == strchr(pszWantedExtension, '\0'));
203
204	/* Look it up. */
205	bool fRet = false;
206	if (strstr(pState->pszExtensions, pszWantedExtension))
207	fRet = true;
208
209	/* Temporarily. Later start if (rsMinGLVersion != 0.0 && fActualGLVersion >= rsMinGLVersion) return true; */
210	#ifdef RT_OS_DARWIN
211	AssertMsg( rsMinGLVersion == 0.0
212	\|\| fRet == (pState->rsGLVersion >= rsMinGLVersion)
213	\|\| VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE == 2.1,
214	("%s actual:%d min:%d fRet=%d\n",
215	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
216	#else
217	AssertMsg(rsMinGLVersion == 0.0 \|\| fRet == (pState->rsGLVersion >= rsMinGLVersion),
218	("%s actual:%d min:%d fRet=%d\n",
219	pszWantedExtension, (int)(pState->rsGLVersion * 10), (int)(rsMinGLVersion * 10), fRet));
220	#endif
221	return fRet;
222	}
223
224
225	/**
226	* Outputs GL_EXTENSIONS list to the release log.
227	*/
228	static void vmsvga3dLogRelExtensions(const char pszPrefix, const char pszExtensions)
229	{
230	/* OpenGL 3.0 interface (glGetString(GL_EXTENSIONS) return NULL). */
231	bool fBuffered = RTLogRelSetBuffering(true);
232
233	/*
234	* Determin the column widths first.
235	*/
236	size_t acchWidths[4] = { 1, 1, 1, 1 };
237	uint32_t i;
238	const char *psz = pszExtensions;
239	for (i = 0; ; i++)
240	{
241	while (*psz == ' ')
242	psz++;
243	if (!*psz)
244	break;
245
246	const char *pszEnd = strchr(psz, ' ');
247	AssertBreak(pszEnd);
248	size_t cch = pszEnd - psz;
249
250	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
251	if (acchWidths[iColumn] < cch)
252	acchWidths[iColumn] = cch;
253
254	psz = pszEnd;
255	}
256
257	/*
258	* Output it.
259	*/
260	LogRel(("VMSVGA3d: %sOpenGL extensions (%d):", pszPrefix, i));
261	psz = pszExtensions;
262	for (i = 0; ; i++)
263	{
264	while (*psz == ' ')
265	psz++;
266	if (!*psz)
267	break;
268
269	const char *pszEnd = strchr(psz, ' ');
270	AssertBreak(pszEnd);
271	size_t cch = pszEnd - psz;
272
273	uint32_t iColumn = i % RT_ELEMENTS(acchWidths);
274	if (iColumn == 0)
275	LogRel(("\nVMSVGA3d: %-.s", acchWidths[iColumn], cch, psz));
276	else if (iColumn != RT_ELEMENTS(acchWidths) - 1)
277	LogRel((" %-.s", acchWidths[iColumn], cch, psz));
278	else
279	LogRel((" %.*s", cch, psz));
280
281	psz = pszEnd;
282	}
283
284	RTLogRelSetBuffering(fBuffered);
285	LogRel(("\n"));
286	}
287
288	/**
289	* Gathers the GL_EXTENSIONS list, storing it as a space padded list at
290	* @a ppszExtensions.
291	*
292	* @returns VINF_SUCCESS or VERR_NO_STR_MEMORY
293	* @param ppszExtensions Pointer to the string pointer. Free with RTStrFree.
294	* @param fGLProfileVersion The OpenGL profile version.
295	*/
296	static int vmsvga3dGatherExtensions(char **ppszExtensions, float fGLProfileVersion)
297	{
298	int rc;
299	*ppszExtensions = NULL;
300
301	/*
302	* Try the old glGetString interface first.
303	*/
304	const char pszExtensions = (const char )glGetString(GL_EXTENSIONS);
305	if (pszExtensions)
306	{
307	rc = RTStrAAppendExN(ppszExtensions, 3, " ", (size_t)1, pszExtensions, RTSTR_MAX, " ", (size_t)1);
308	AssertLogRelRCReturn(rc, rc);
309	}
310	else
311	{
312	/*
313	* The new interface where each extension string is retrieved separately.
314	* Note! Cannot use VMSVGA3D_INIT_CHECKED_GL_GET_INTEGER_VALUE here because
315	* the above GL_EXTENSIONS error lingers on darwin. sucks.
316	*/
317	#ifndef GL_NUM_EXTENSIONS
318	# define GL_NUM_EXTENSIONS 0x821D
319	#endif
320	GLint cExtensions = 1024;
321	glGetIntegerv(GL_NUM_EXTENSIONS, &cExtensions);
322	Assert(cExtensions != 1024);
323
324	PFNGLGETSTRINGIPROC pfnGlGetStringi = (PFNGLGETSTRINGIPROC)OGLGETPROCADDRESS("glGetStringi");
325	AssertLogRelReturn(pfnGlGetStringi, VERR_NOT_SUPPORTED);
326
327	rc = RTStrAAppend(ppszExtensions, " ");
328	for (GLint i = 0; RT_SUCCESS(rc) && i < cExtensions; i++)
329	{
330	const char pszExt = (const char )pfnGlGetStringi(GL_EXTENSIONS, i);
331	if (pszExt)
332	rc = RTStrAAppendExN(ppszExtensions, 2, pfnGlGetStringi(GL_EXTENSIONS, i), RTSTR_MAX, " ", (size_t)1);
333	}
334	AssertRCReturn(rc, rc);
335	}
336
337	#if 1
338	/*
339	* Add extensions promoted into the core OpenGL profile.
340	*/
341	static const struct
342	{
343	float fGLVersion;
344	const char *pszzExtensions;
345	} s_aPromotedExtensions[] =
346	{
347	{
348	1.1f,
349	" GL_EXT_vertex_array \0"
350	" GL_EXT_polygon_offset \0"
351	" GL_EXT_blend_logic_op \0"
352	" GL_EXT_texture \0"
353	" GL_EXT_copy_texture \0"
354	" GL_EXT_subtexture \0"
355	" GL_EXT_texture_object \0"
356	" GL_ARB_framebuffer_object \0"
357	" GL_ARB_map_buffer_range \0"
358	" GL_ARB_vertex_array_object \0"
359	"\0"
360	},
361	{
362	1.2f,
363	" EXT_texture3D \0"
364	" EXT_bgra \0"
365	" EXT_packed_pixels \0"
366	" EXT_rescale_normal \0"
367	" EXT_separate_specular_color \0"
368	" SGIS_texture_edge_clamp \0"
369	" SGIS_texture_lod \0"
370	" EXT_draw_range_elements \0"
371	"\0"
372	},
373	{
374	1.3f,
375	" GL_ARB_texture_compression \0"
376	" GL_ARB_texture_cube_map \0"
377	" GL_ARB_multisample \0"
378	" GL_ARB_multitexture \0"
379	" GL_ARB_texture_env_add \0"
380	" GL_ARB_texture_env_combine \0"
381	" GL_ARB_texture_env_dot3 \0"
382	" GL_ARB_texture_border_clamp \0"
383	" GL_ARB_transpose_matrix \0"
384	"\0"
385	},
386	{
387	1.5f,
388	" GL_SGIS_generate_mipmap \0"
389	/" GL_NV_blend_equare \0"/
390	" GL_ARB_depth_texture \0"
391	" GL_ARB_shadow \0"
392	" GL_EXT_fog_coord \0"
393	" GL_EXT_multi_draw_arrays \0"
394	" GL_ARB_point_parameters \0"
395	" GL_EXT_secondary_color \0"
396	" GL_EXT_blend_func_separate \0"
397	" GL_EXT_stencil_wrap \0"
398	" GL_ARB_texture_env_crossbar \0"
399	" GL_EXT_texture_lod_bias \0"
400	" GL_ARB_texture_mirrored_repeat \0"
401	" GL_ARB_window_pos \0"
402	"\0"
403	},
404	{
405	1.6f,
406	" GL_ARB_vertex_buffer_object \0"
407	" GL_ARB_occlusion_query \0"
408	" GL_EXT_shadow_funcs \0"
409	},
410	{
411	2.0f,
412	" GL_ARB_shader_objects \0" /??/
413	" GL_ARB_vertex_shader \0" /??/
414	" GL_ARB_fragment_shader \0" /??/
415	" GL_ARB_shading_language_100 \0" /??/
416	" GL_ARB_draw_buffers \0"
417	" GL_ARB_texture_non_power_of_two \0"
418	" GL_ARB_point_sprite \0"
419	" GL_ATI_separate_stencil \0"
420	" GL_EXT_stencil_two_side \0"
421	"\0"
422	},
423	{
424	2.1f,
425	" GL_ARB_pixel_buffer_object \0"
426	" GL_EXT_texture_sRGB \0"
427	"\0"
428	},
429	{
430	3.0f,
431	" GL_ARB_framebuffer_object \0"
432	" GL_ARB_map_buffer_range \0"
433	" GL_ARB_vertex_array_object \0"
434	"\0"
435	},
436	{
437	3.1f,
438	" GL_ARB_copy_buffer \0"
439	" GL_ARB_uniform_buffer_object \0"
440	"\0"
441	},
442	{
443	3.2f,
444	" GL_ARB_vertex_array_bgra \0"
445	" GL_ARB_draw_elements_base_vertex \0"
446	" GL_ARB_fragment_coord_conventions \0"
447	" GL_ARB_provoking_vertex \0"
448	" GL_ARB_seamless_cube_map \0"
449	" GL_ARB_texture_multisample \0"
450	" GL_ARB_depth_clamp \0"
451	" GL_ARB_sync \0"
452	" GL_ARB_geometry_shader4 \0" /??/
453	"\0"
454	},
455	{
456	3.3f,
457	" GL_ARB_blend_func_extended \0"
458	" GL_ARB_sampler_objects \0"
459	" GL_ARB_explicit_attrib_location \0"
460	" GL_ARB_occlusion_query2 \0"
461	" GL_ARB_shader_bit_encoding \0"
462	" GL_ARB_texture_rgb10_a2ui \0"
463	" GL_ARB_texture_swizzle \0"
464	" GL_ARB_timer_query \0"
465	" GL_ARB_vertex_type_2_10_10_10_rev \0"
466	"\0"
467	},
468	{
469	4.0f,
470	" GL_ARB_texture_query_lod \0"
471	" GL_ARB_draw_indirect \0"
472	" GL_ARB_gpu_shader5 \0"
473	" GL_ARB_gpu_shader_fp64 \0"
474	" GL_ARB_shader_subroutine \0"
475	" GL_ARB_tessellation_shader \0"
476	" GL_ARB_texture_buffer_object_rgb32 \0"
477	" GL_ARB_texture_cube_map_array \0"
478	" GL_ARB_texture_gather \0"
479	" GL_ARB_transform_feedback2 \0"
480	" GL_ARB_transform_feedback3 \0"
481	"\0"
482	},
483	{
484	4.1f,
485	" GL_ARB_ES2_compatibility \0"
486	" GL_ARB_get_program_binary \0"
487	" GL_ARB_separate_shader_objects \0"
488	" GL_ARB_shader_precision \0"
489	" GL_ARB_vertex_attrib_64bit \0"
490	" GL_ARB_viewport_array \0"
491	"\0"
492	}
493	};
494
495	uint32_t cPromoted = 0;
496	for (uint32_t i = 0; i < RT_ELEMENTS(s_aPromotedExtensions) && s_aPromotedExtensions[i].fGLVersion <= fGLProfileVersion; i++)
497	{
498	const char *pszExt = s_aPromotedExtensions[i].pszzExtensions;
499	while (*pszExt)
500	{
501	# ifdef VBOX_STRICT
502	size_t cchExt = strlen(pszExt);
503	Assert(cchExt > 3);
504	Assert(pszExt[0] == ' ');
505	Assert(pszExt[1] != ' ');
506	Assert(pszExt[cchExt - 2] != ' ');
507	Assert(pszExt[cchExt - 1] == ' ');
508	# endif
509
510	if (strstr(*ppszExtensions, pszExt) == NULL)
511	{
512	if (cPromoted++ == 0)
513	{
514	rc = RTStrAAppend(ppszExtensions, " <promoted-extensions:> <promoted-extensions:> <promoted-extensions:> ");
515	AssertRCReturn(rc, rc);
516	}
517
518	rc = RTStrAAppend(ppszExtensions, pszExt);
519	AssertRCReturn(rc, rc);
520	}
521
522	pszExt = strchr(pszExt, '\0') + 1;
523	}
524	}
525	#endif
526
527	return VINF_SUCCESS;
528	}
529
530	/** Check whether this is an Intel GL driver.
531	*
532	* @returns true if this seems to be some Intel graphics.
533	*/
534	static bool vmsvga3dIsVendorIntel(void)
535	{
536	return RTStrNICmp((char *)glGetString(GL_VENDOR), "Intel", 5) == 0;
537	}
538
539	/**
540	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnSwitchInitProfile}
541	*/
542	static DECLCALLBACK(void) vmsvga3dShaderIfSwitchInitProfile(PVBOXVMSVGASHADERIF pThis, bool fOtherProfile)
543	{
544	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
545	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
546	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[fOtherProfile ? 2 : 1]);
547	#else
548	NOREF(pThis);
549	NOREF(fOtherProfile);
550	#endif
551	}
552
553
554	/**
555	* @interface_method_impl{VBOXVMSVGASHADERIF,pfnGetNextExtension}
556	*/
557	static DECLCALLBACK(bool) vmsvga3dShaderIfGetNextExtension(PVBOXVMSVGASHADERIF pThis, void **ppvEnumCtx,
558	char *pszBuf, size_t cbBuf, bool fOtherProfile)
559	{
560	PVMSVGA3DSTATE pState = RT_FROM_MEMBER(pThis, VMSVGA3DSTATE, ShaderIf);
561	const char pszCur = ppvEnumCtx ? (const char )ppvEnumCtx
562	: fOtherProfile ? pState->pszOtherExtensions : pState->pszExtensions;
563	while (*pszCur == ' ')
564	pszCur++;
565	if (!*pszCur)
566	return false;
567
568	const char *pszEnd = strchr(pszCur, ' ');
569	AssertReturn(pszEnd, false);
570	size_t cch = pszEnd - pszCur;
571	if (cch < cbBuf)
572	{
573	memcpy(pszBuf, pszCur, cch);
574	pszBuf[cch] = '\0';
575	}
576	else if (cbBuf > 0)
577	{
578	memcpy(pszBuf, "<overflow>", RT_MIN(sizeof("<overflow>"), cbBuf));
579	pszBuf[cbBuf - 1] = '\0';
580	}
581
582	ppvEnumCtx = (void )pszEnd;
583	return true;
584	}
585
586
587	/**
588	* Initializes the VMSVGA3D state during VGA device construction.
589	*
590	* Failure are generally not fatal, 3D support will just be disabled.
591	*
592	* @returns VBox status code.
593	* @param pDevIns The device instance.
594	* @param pThis The shared VGA/VMSVGA state where svga.p3dState will be
595	* modified.
596	* @param pThisCC The VGA/VMSVGA state for ring-3.
597	*/
598	static DECLCALLBACK(int) vmsvga3dBackInit(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
599	{
600	int rc;
601	RT_NOREF(pDevIns, pThis);
602
603	AssertCompile(GL_TRUE == 1);
604	AssertCompile(GL_FALSE == 0);
605
606	#ifdef VMSVGA3D_DYNAMIC_LOAD
607	rc = glLdrInit(pDevIns);
608	if (RT_FAILURE(rc))
609	{
610	LogRel(("VMSVGA3d: Error loading OpenGL library and resolving necessary functions: %Rrc\n", rc));
611	return rc;
612	}
613	#endif
614
615	/*
616	* Load and resolve imports from the external shared libraries.
617	*/
618	RTERRINFOSTATIC ErrInfo;
619	rc = ExplicitlyLoadVBoxSVGA3D(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
620	if (RT_FAILURE(rc))
621	{
622	LogRel(("VMSVGA3d: Error loading VBoxSVGA3D and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
623	return rc;
624	}
625	#ifdef RT_OS_DARWIN
626	rc = ExplicitlyLoadVBoxSVGA3DObjC(true /fResolveAllImports/, RTErrInfoInitStatic(&ErrInfo));
627	if (RT_FAILURE(rc))
628	{
629	LogRel(("VMSVGA3d: Error loading VBoxSVGA3DObjC and resolving necessary functions: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg));
630	return rc;
631	}
632	#endif
633
634	/*
635	* Allocate the state.
636	*/
637	pThisCC->svga.p3dState = (PVMSVGA3DSTATE)RTMemAllocZ(sizeof(VMSVGA3DSTATE));
638	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
639
640	#ifdef RT_OS_WINDOWS
641	/* Create event semaphore and async IO thread. */
642	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
643	rc = RTSemEventCreate(&pState->WndRequestSem);
644	if (RT_SUCCESS(rc))
645	{
646	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dWindowThread, pState->WndRequestSem, 0, RTTHREADTYPE_GUI, 0,
647	"VMSVGA3DWND");
648	if (RT_SUCCESS(rc))
649	return VINF_SUCCESS;
650
651	/* bail out. */
652	LogRel(("VMSVGA3d: RTThreadCreate failed: %Rrc\n", rc));
653	RTSemEventDestroy(pState->WndRequestSem);
654	}
655	else
656	LogRel(("VMSVGA3d: RTSemEventCreate failed: %Rrc\n", rc));
657	RTMemFree(pThisCC->svga.p3dState);
658	pThisCC->svga.p3dState = NULL;
659	return rc;
660	#else
661	return VINF_SUCCESS;
662	#endif
663	}
664
665	static int vmsvga3dLoadGLFunctions(PVMSVGA3DSTATE pState)
666	{
667	/* A strict approach to get a proc address as recommended by Khronos:
668	* - "If the function is a core OpenGL function, then we need to check the OpenGL version".
669	* - "If the function is an extension, we need to check to see if the extension is supported."
670	*/
671
672	/* Get a function address, return VERR_NOT_IMPLEMENTED on failure. */
673	#define GLGETPROC_(ProcType, ProcName, NameSuffix) do { \
674	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
675	AssertLogRelMsgReturn(pState->ext.ProcName, (#ProcName NameSuffix " missing"), VERR_NOT_IMPLEMENTED); \
676	} while(0)
677
678	/* Get an optional function address. LogRel on failure. */
679	#define GLGETPROCOPT_(ProcType, ProcName, NameSuffix) do { \
680	pState->ext.ProcName = (ProcType)OGLGETPROCADDRESS(#ProcName NameSuffix); \
681	if (!pState->ext.ProcName) \
682	{ \
683	LogRel(("VMSVGA3d: missing optional %s\n", #ProcName NameSuffix)); \
684	AssertFailed(); \
685	} \
686	} while(0)
687
688	/* OpenGL 2.0 or earlier core. Do not bother with extensions. */
689	GLGETPROC_(PFNGLGENQUERIESPROC , glGenQueries, "");
690	GLGETPROC_(PFNGLDELETEQUERIESPROC , glDeleteQueries, "");
691	GLGETPROC_(PFNGLBEGINQUERYPROC , glBeginQuery, "");
692	GLGETPROC_(PFNGLENDQUERYPROC , glEndQuery, "");
693	GLGETPROC_(PFNGLGETQUERYOBJECTUIVPROC , glGetQueryObjectuiv, "");
694	GLGETPROC_(PFNGLTEXIMAGE3DPROC , glTexImage3D, "");
695	GLGETPROC_(PFNGLTEXSUBIMAGE3DPROC , glTexSubImage3D, "");
696	GLGETPROC_(PFNGLGETCOMPRESSEDTEXIMAGEPROC , glGetCompressedTexImage, "");
697	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE2DPROC , glCompressedTexImage2D, "");
698	GLGETPROC_(PFNGLCOMPRESSEDTEXIMAGE3DPROC , glCompressedTexImage3D, "");
699	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC , glCompressedTexSubImage2D, "");
700	GLGETPROC_(PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC , glCompressedTexSubImage3D, "");
701	GLGETPROC_(PFNGLPOINTPARAMETERFPROC , glPointParameterf, "");
702	GLGETPROC_(PFNGLBLENDEQUATIONSEPARATEPROC , glBlendEquationSeparate, "");
703	GLGETPROC_(PFNGLBLENDFUNCSEPARATEPROC , glBlendFuncSeparate, "");
704	GLGETPROC_(PFNGLSTENCILOPSEPARATEPROC , glStencilOpSeparate, "");
705	GLGETPROC_(PFNGLSTENCILFUNCSEPARATEPROC , glStencilFuncSeparate, "");
706	GLGETPROC_(PFNGLBINDBUFFERPROC , glBindBuffer, "");
707	GLGETPROC_(PFNGLDELETEBUFFERSPROC , glDeleteBuffers, "");
708	GLGETPROC_(PFNGLGENBUFFERSPROC , glGenBuffers, "");
709	GLGETPROC_(PFNGLBUFFERDATAPROC , glBufferData, "");
710	GLGETPROC_(PFNGLMAPBUFFERPROC , glMapBuffer, "");
711	GLGETPROC_(PFNGLUNMAPBUFFERPROC , glUnmapBuffer, "");
712	GLGETPROC_(PFNGLENABLEVERTEXATTRIBARRAYPROC , glEnableVertexAttribArray, "");
713	GLGETPROC_(PFNGLDISABLEVERTEXATTRIBARRAYPROC , glDisableVertexAttribArray, "");
714	GLGETPROC_(PFNGLVERTEXATTRIBPOINTERPROC , glVertexAttribPointer, "");
715	GLGETPROC_(PFNGLACTIVETEXTUREPROC , glActiveTexture, "");
716	/* glGetProgramivARB determines implementation limits for the program
717	* target (GL_FRAGMENT_PROGRAM_ARB, GL_VERTEX_PROGRAM_ARB).
718	* It differs from glGetProgramiv, which returns a parameter from a program object.
719	*/
720	GLGETPROC_(PFNGLGETPROGRAMIVARBPROC , glGetProgramivARB, "");
721	GLGETPROC_(PFNGLFOGCOORDPOINTERPROC , glFogCoordPointer, "");
722	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x102
723	GLGETPROC_(PFNGLBLENDCOLORPROC , glBlendColor, "");
724	GLGETPROC_(PFNGLBLENDEQUATIONPROC , glBlendEquation, "");
725	#endif
726	#if VBOX_VMSVGA3D_GL_HACK_LEVEL < 0x103
727	GLGETPROC_(PFNGLCLIENTACTIVETEXTUREPROC , glClientActiveTexture, "");
728	#endif
729	GLGETPROC_(PFNGLDRAWBUFFERSPROC , glDrawBuffers, "");
730	GLGETPROC_(PFNGLCREATESHADERPROC , glCreateShader, "");
731	GLGETPROC_(PFNGLSHADERSOURCEPROC , glShaderSource, "");
732	GLGETPROC_(PFNGLCOMPILESHADERPROC , glCompileShader, "");
733	GLGETPROC_(PFNGLGETSHADERIVPROC , glGetShaderiv, "");
734	GLGETPROC_(PFNGLGETSHADERINFOLOGPROC , glGetShaderInfoLog, "");
735	GLGETPROC_(PFNGLCREATEPROGRAMPROC , glCreateProgram, "");
736	GLGETPROC_(PFNGLATTACHSHADERPROC , glAttachShader, "");
737	GLGETPROC_(PFNGLLINKPROGRAMPROC , glLinkProgram, "");
738	GLGETPROC_(PFNGLGETPROGRAMIVPROC , glGetProgramiv, "");
739	GLGETPROC_(PFNGLGETPROGRAMINFOLOGPROC , glGetProgramInfoLog, "");
740	GLGETPROC_(PFNGLUSEPROGRAMPROC , glUseProgram, "");
741	GLGETPROC_(PFNGLGETUNIFORMLOCATIONPROC , glGetUniformLocation, "");
742	GLGETPROC_(PFNGLUNIFORM1IPROC , glUniform1i, "");
743	GLGETPROC_(PFNGLUNIFORM4FVPROC , glUniform4fv, "");
744	GLGETPROC_(PFNGLDETACHSHADERPROC , glDetachShader, "");
745	GLGETPROC_(PFNGLDELETESHADERPROC , glDeleteShader, "");
746	GLGETPROC_(PFNGLDELETEPROGRAMPROC , glDeleteProgram, "");
747
748	GLGETPROC_(PFNGLVERTEXATTRIB4FVPROC , glVertexAttrib4fv, "");
749	GLGETPROC_(PFNGLVERTEXATTRIB4UBVPROC , glVertexAttrib4ubv, "");
750	GLGETPROC_(PFNGLVERTEXATTRIB4NUBVPROC , glVertexAttrib4Nubv, "");
751	GLGETPROC_(PFNGLVERTEXATTRIB4SVPROC , glVertexAttrib4sv, "");
752	GLGETPROC_(PFNGLVERTEXATTRIB4NSVPROC , glVertexAttrib4Nsv, "");
753	GLGETPROC_(PFNGLVERTEXATTRIB4NUSVPROC , glVertexAttrib4Nusv, "");
754
755	/* OpenGL 3.0 core, GL_ARB_instanced_arrays. Same functions names in the ARB and core specs. */
756	if ( pState->rsGLVersion >= 3.0f
757	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_framebuffer_object "))
758	{
759	GLGETPROC_(PFNGLISRENDERBUFFERPROC , glIsRenderbuffer, "");
760	GLGETPROC_(PFNGLBINDRENDERBUFFERPROC , glBindRenderbuffer, "");
761	GLGETPROC_(PFNGLDELETERENDERBUFFERSPROC , glDeleteRenderbuffers, "");
762	GLGETPROC_(PFNGLGENRENDERBUFFERSPROC , glGenRenderbuffers, "");
763	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEPROC , glRenderbufferStorage, "");
764	GLGETPROC_(PFNGLGETRENDERBUFFERPARAMETERIVPROC , glGetRenderbufferParameteriv, "");
765	GLGETPROC_(PFNGLISFRAMEBUFFERPROC , glIsFramebuffer, "");
766	GLGETPROC_(PFNGLBINDFRAMEBUFFERPROC , glBindFramebuffer, "");
767	GLGETPROC_(PFNGLDELETEFRAMEBUFFERSPROC , glDeleteFramebuffers, "");
768	GLGETPROC_(PFNGLGENFRAMEBUFFERSPROC , glGenFramebuffers, "");
769	GLGETPROC_(PFNGLCHECKFRAMEBUFFERSTATUSPROC , glCheckFramebufferStatus, "");
770	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE1DPROC , glFramebufferTexture1D, "");
771	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE2DPROC , glFramebufferTexture2D, "");
772	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURE3DPROC , glFramebufferTexture3D, "");
773	GLGETPROC_(PFNGLFRAMEBUFFERRENDERBUFFERPROC , glFramebufferRenderbuffer, "");
774	GLGETPROC_(PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC , glGetFramebufferAttachmentParameteriv, "");
775	GLGETPROC_(PFNGLGENERATEMIPMAPPROC , glGenerateMipmap, "");
776	GLGETPROC_(PFNGLBLITFRAMEBUFFERPROC , glBlitFramebuffer, "");
777	GLGETPROC_(PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC , glRenderbufferStorageMultisample, "");
778	GLGETPROC_(PFNGLFRAMEBUFFERTEXTURELAYERPROC , glFramebufferTextureLayer, "");
779	}
780
781	/* OpenGL 3.1 core, GL_ARB_draw_instanced, GL_EXT_draw_instanced. */
782	if (pState->rsGLVersion >= 3.1f)
783	{
784	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "");
785	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "");
786	}
787	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_instanced "))
788	{
789	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "ARB");
790	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "ARB");
791	}
792	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_draw_instanced "))
793	{
794	GLGETPROC_(PFNGLDRAWARRAYSINSTANCEDPROC , glDrawArraysInstanced, "EXT");
795	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDPROC , glDrawElementsInstanced, "EXT");
796	}
797
798	/* OpenGL 3.2 core, GL_ARB_draw_elements_base_vertex. Same functions names in the ARB and core specs. */
799	if ( pState->rsGLVersion >= 3.2f
800	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_draw_elements_base_vertex "))
801	{
802	GLGETPROC_(PFNGLDRAWELEMENTSBASEVERTEXPROC , glDrawElementsBaseVertex, "");
803	GLGETPROC_(PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC , glDrawElementsInstancedBaseVertex, "");
804	}
805
806	/* Optional. OpenGL 3.2 core, GL_ARB_provoking_vertex. Same functions names in the ARB and core specs. */
807	if ( pState->rsGLVersion >= 3.2f
808	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_provoking_vertex "))
809	{
810	GLGETPROCOPT_(PFNGLPROVOKINGVERTEXPROC , glProvokingVertex, "");
811	}
812
813	/* OpenGL 3.3 core, GL_ARB_instanced_arrays. */
814	if (pState->rsGLVersion >= 3.3f)
815	{
816	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORPROC , glVertexAttribDivisor, "");
817	}
818	else if (vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_instanced_arrays "))
819	{
820	GLGETPROC_(PFNGLVERTEXATTRIBDIVISORARBPROC , glVertexAttribDivisor, "ARB");
821	}
822
823	#undef GLGETPROCOPT_
824	#undef GLGETPROC_
825
826	return VINF_SUCCESS;
827	}
828
829
830	DECLINLINE(GLenum) vmsvga3dCubemapFaceFromIndex(uint32_t iFace)
831	{
832	GLint Face;
833	switch (iFace)
834	{
835	case 0: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; break;
836	case 1: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; break;
837	case 2: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; break;
838	case 3: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; break;
839	case 4: Face = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; break;
840	default:
841	case 5: Face = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; break;
842	}
843	return Face;
844	}
845
846
847	/* We must delay window creation until the PowerOn phase. Init is too early and will cause failures. */
848	static DECLCALLBACK(int) vmsvga3dBackPowerOn(PPDMDEVINS pDevIns, PVGASTATE pThis, PVGASTATECC pThisCC)
849	{
850	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
851	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
852	PVMSVGA3DCONTEXT pContext;
853	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
854	PVMSVGA3DCONTEXT pOtherCtx;
855	#endif
856	int rc;
857	RT_NOREF(pDevIns, pThis);
858
859	if (pState->rsGLVersion != 0.0)
860	return VINF_SUCCESS; /* already initialized (load state) */
861
862	/*
863	* OpenGL function calls aren't possible without a valid current context, so create a fake one here.
864	*/
865	rc = vmsvga3dContextDefineOgl(pThisCC, 1, VMSVGA3D_DEF_CTX_F_INIT);
866	AssertRCReturn(rc, rc);
867
868	pContext = pState->papContexts[1];
869	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
870
871	#ifdef VMSVGA3D_DYNAMIC_LOAD
872	/* Context is set and it is possible now to resolve extension functions. */
873	rc = glLdrGetExtFunctions(pDevIns);
874	if (RT_FAILURE(rc))
875	{
876	LogRel(("VMSVGA3d: Error resolving extension functions: %Rrc\n", rc));
877	return rc;
878	}
879	#endif
880
881	LogRel(("VMSVGA3d: OpenGL version: %s\n"
882	"VMSVGA3d: OpenGL Vendor: %s\n"
883	"VMSVGA3d: OpenGL Renderer: %s\n"
884	"VMSVGA3d: OpenGL shader language version: %s\n",
885	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
886	glGetString(GL_SHADING_LANGUAGE_VERSION)));
887
888	rc = vmsvga3dGatherExtensions(&pState->pszExtensions, VBOX_VMSVGA3D_DEFAULT_OGL_PROFILE);
889	AssertRCReturn(rc, rc);
890	vmsvga3dLogRelExtensions("", pState->pszExtensions);
891
892	pState->rsGLVersion = atof((const char *)glGetString(GL_VERSION));
893
894
895	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
896	/*
897	* Get the extension list for the alternative profile so we can better
898	* figure out the shader model and stuff.
899	*/
900	rc = vmsvga3dContextDefineOgl(pThisCC, 2, VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
901	AssertLogRelRCReturn(rc, rc);
902	pContext = pState->papContexts[1]; /* Array may have been reallocated. */
903
904	pOtherCtx = pState->papContexts[2];
905	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
906
907	LogRel(("VMSVGA3d: Alternative OpenGL version: %s\n"
908	"VMSVGA3d: Alternative OpenGL Vendor: %s\n"
909	"VMSVGA3d: Alternative OpenGL Renderer: %s\n"
910	"VMSVGA3d: Alternative OpenGL shader language version: %s\n",
911	glGetString(GL_VERSION), glGetString(GL_VENDOR), glGetString(GL_RENDERER),
912	glGetString(GL_SHADING_LANGUAGE_VERSION)));
913
914	rc = vmsvga3dGatherExtensions(&pState->pszOtherExtensions, VBOX_VMSVGA3D_OTHER_OGL_PROFILE);
915	AssertRCReturn(rc, rc);
916	vmsvga3dLogRelExtensions("Alternative ", pState->pszOtherExtensions);
917
918	pState->rsOtherGLVersion = atof((const char *)glGetString(GL_VERSION));
919
920	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
921	#else
922	pState->pszOtherExtensions = (char *)"";
923	pState->rsOtherGLVersion = pState->rsGLVersion;
924	#endif
925
926	/*
927	* Resolve GL function pointers and store them in pState->ext.
928	*/
929	rc = vmsvga3dLoadGLFunctions(pState);
930	if (RT_FAILURE(rc))
931	{
932	LogRel(("VMSVGA3d: missing required OpenGL function or extension; aborting\n"));
933	return rc;
934	}
935
936	/*
937	* Initialize the capabilities with sensible defaults.
938	*/
939	pState->caps.maxActiveLights = 1;
940	pState->caps.maxTextures = 1;
941	pState->caps.maxClipDistances = 4;
942	pState->caps.maxColorAttachments = 1;
943	pState->caps.maxRectangleTextureSize = 2048;
944	pState->caps.maxTextureAnisotropy = 1;
945	pState->caps.maxVertexShaderInstructions = 1024;
946	pState->caps.maxFragmentShaderInstructions = 1024;
947	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_NONE;
948	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_NONE;
949	pState->caps.flPointSize[0] = 1;
950	pState->caps.flPointSize[1] = 1;
951
952	/*
953	* Query capabilities
954	*/
955	pState->caps.fS3TCSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_compression_s3tc ");
956	pState->caps.fTextureFilterAnisotropicSupported = vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_texture_filter_anisotropic ");
957
958	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_LIGHTS, &pState->caps.maxActiveLights));
959	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &pState->caps.maxTextures));
960	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
961	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
962	VMSVGA3D_INIT_CHECKED_BOTH(pState, pOtherCtx, pContext, glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
963	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
964	#else
965	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_CLIP_DISTANCES, &pState->caps.maxClipDistances));
966	#endif
967	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &pState->caps.maxColorAttachments));
968	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE, &pState->caps.maxRectangleTextureSize));
969	if (pState->caps.fTextureFilterAnisotropicSupported)
970	VMSVGA3D_INIT_CHECKED(glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &pState->caps.maxTextureAnisotropy));
971	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx, glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, pState->caps.flPointSize));
972
973	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
974	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
975	&pState->caps.maxFragmentShaderTemps));
976	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
977	pState->ext.glGetProgramivARB(GL_FRAGMENT_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
978	&pState->caps.maxFragmentShaderInstructions));
979	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
980	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB,
981	&pState->caps.maxVertexShaderTemps));
982	VMSVGA3D_INIT_CHECKED_BOTH(pState, pContext, pOtherCtx,
983	pState->ext.glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB,
984	&pState->caps.maxVertexShaderInstructions));
985
986	/* http://http://www.opengl.org/wiki/Detecting_the_Shader_Model
987	* ARB Assembly Language
988	* These are done through testing the presence of extensions. You should test them in this order:
989	* GL_NV_gpu_program4: SM 4.0 or better.
990	* GL_NV_vertex_program3: SM 3.0 or better.
991	* GL_ARB_fragment_program: SM 2.0 or better.
992	* ATI does not support higher than SM 2.0 functionality in assembly shaders.
993	*
994	*/
995	/** @todo distinguish between vertex and pixel shaders??? */
996	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE /* The alternative profile has a higher number here (ati/darwin). */
997	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pOtherCtx);
998	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
999	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
1000	#else
1001	const char pszShadingLanguageVersion = (const char )glGetString(GL_SHADING_LANGUAGE_VERSION);
1002	#endif
1003	float v = pszShadingLanguageVersion ? atof(pszShadingLanguageVersion) : 0.0f;
1004	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_gpu_program4 ")
1005	\|\| strstr(pState->pszOtherExtensions, " GL_NV_gpu_program4 "))
1006	{
1007	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_40;
1008	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_40;
1009	}
1010	else
1011	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_NV_vertex_program3 ")
1012	\|\| strstr(pState->pszOtherExtensions, " GL_NV_vertex_program3 ")
1013	\|\| vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_shader_texture_lod ") /* Wine claims this suggests SM 3.0 support */
1014	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_shader_texture_lod ")
1015	)
1016	{
1017	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_30;
1018	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_30;
1019	}
1020	else
1021	if ( vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_fragment_program ")
1022	\|\| strstr(pState->pszOtherExtensions, " GL_ARB_fragment_program "))
1023	{
1024	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_20;
1025	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_20;
1026	}
1027	else
1028	{
1029	LogRel(("VMSVGA3D: WARNING: unknown support for assembly shaders!!\n"));
1030	pState->caps.vertexShaderVersion = SVGA3DVSVERSION_11;
1031	pState->caps.fragmentShaderVersion = SVGA3DPSVERSION_11;
1032	}
1033
1034	/* Now check the shading language version, in case it indicates a higher supported version. */
1035	if (v >= 3.30f)
1036	{
1037	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_40);
1038	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_40);
1039	}
1040	else
1041	if (v >= 1.20f)
1042	{
1043	pState->caps.vertexShaderVersion = RT_MAX(pState->caps.vertexShaderVersion, SVGA3DVSVERSION_20);
1044	pState->caps.fragmentShaderVersion = RT_MAX(pState->caps.fragmentShaderVersion, SVGA3DPSVERSION_20);
1045	}
1046
1047	if ( !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_ARB_vertex_array_bgra ")
1048	&& !vmsvga3dCheckGLExtension(pState, 0.0f, " GL_EXT_vertex_array_bgra "))
1049	{
1050	LogRel(("VMSVGA3D: WARNING: Missing required extension GL_ARB_vertex_array_bgra (d3dcolor)!!!\n"));
1051	}
1052
1053	/*
1054	* Tweak capabilities.
1055	*/
1056	/* Intel Windows drivers return 31, while the guest expects 32 at least. */
1057	if ( pState->caps.maxVertexShaderTemps < 32
1058	&& vmsvga3dIsVendorIntel())
1059	pState->caps.maxVertexShaderTemps = 32;
1060
1061	#if 0
1062	SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND = 11,
1063	SVGA3D_DEVCAP_QUERY_TYPES = 15,
1064	SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING = 16,
1065	SVGA3D_DEVCAP_MAX_POINT_SIZE = 17,
1066	SVGA3D_DEVCAP_MAX_SHADER_TEXTURES = 18,
1067	SVGA3D_DEVCAP_MAX_VOLUME_EXTENT = 21,
1068	SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT = 22,
1069	SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO = 23,
1070	SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY = 24,
1071	SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT = 25,
1072	SVGA3D_DEVCAP_MAX_VERTEX_INDEX = 26,
1073	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS = 28,
1074	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS = 29,
1075	SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS = 30,
1076	SVGA3D_DEVCAP_TEXTURE_OPS = 31,
1077	SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8 = 32,
1078	SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8 = 33,
1079	SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10 = 34,
1080	SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5 = 35,
1081	SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5 = 36,
1082	SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4 = 37,
1083	SVGA3D_DEVCAP_SURFACEFMT_R5G6B5 = 38,
1084	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16 = 39,
1085	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8 = 40,
1086	SVGA3D_DEVCAP_SURFACEFMT_ALPHA8 = 41,
1087	SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8 = 42,
1088	SVGA3D_DEVCAP_SURFACEFMT_Z_D16 = 43,
1089	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8 = 44,
1090	SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8 = 45,
1091	SVGA3D_DEVCAP_SURFACEFMT_DXT1 = 46,
1092	SVGA3D_DEVCAP_SURFACEFMT_DXT2 = 47,
1093	SVGA3D_DEVCAP_SURFACEFMT_DXT3 = 48,
1094	SVGA3D_DEVCAP_SURFACEFMT_DXT4 = 49,
1095	SVGA3D_DEVCAP_SURFACEFMT_DXT5 = 50,
1096	SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8 = 51,
1097	SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10 = 52,
1098	SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8 = 53,
1099	SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8 = 54,
1100	SVGA3D_DEVCAP_SURFACEFMT_CxV8U8 = 55,
1101	SVGA3D_DEVCAP_SURFACEFMT_R_S10E5 = 56,
1102	SVGA3D_DEVCAP_SURFACEFMT_R_S23E8 = 57,
1103	SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5 = 58,
1104	SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8 = 59,
1105	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5 = 60,
1106	SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8 = 61,
1107	SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES = 63,
1108	SVGA3D_DEVCAP_SURFACEFMT_V16U16 = 65,
1109	SVGA3D_DEVCAP_SURFACEFMT_G16R16 = 66,
1110	SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16 = 67,
1111	SVGA3D_DEVCAP_SURFACEFMT_UYVY = 68,
1112	SVGA3D_DEVCAP_SURFACEFMT_YUY2 = 69,
1113	SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES = 70,
1114	SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES = 71,
1115	SVGA3D_DEVCAP_ALPHATOCOVERAGE = 72,
1116	SVGA3D_DEVCAP_SUPERSAMPLE = 73,
1117	SVGA3D_DEVCAP_AUTOGENMIPMAPS = 74,
1118	SVGA3D_DEVCAP_SURFACEFMT_NV12 = 75,
1119	SVGA3D_DEVCAP_SURFACEFMT_AYUV = 76,
1120	SVGA3D_DEVCAP_SURFACEFMT_Z_DF16 = 79,
1121	SVGA3D_DEVCAP_SURFACEFMT_Z_DF24 = 80,
1122	SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT = 81,
1123	SVGA3D_DEVCAP_SURFACEFMT_ATI1 = 82,
1124	SVGA3D_DEVCAP_SURFACEFMT_ATI2 = 83,
1125	#endif
1126
1127	LogRel(("VMSVGA3d: Capabilities:\n"));
1128	LogRel(("VMSVGA3d: maxActiveLights=%-2d maxTextures=%-2d\n",
1129	pState->caps.maxActiveLights, pState->caps.maxTextures));
1130	LogRel(("VMSVGA3d: maxClipDistances=%-2d maxColorAttachments=%-2d maxClipDistances=%d\n",
1131	pState->caps.maxClipDistances, pState->caps.maxColorAttachments, pState->caps.maxClipDistances));
1132	LogRel(("VMSVGA3d: maxColorAttachments=%-2d maxTextureAnisotropy=%-2d maxRectangleTextureSize=%d\n",
1133	pState->caps.maxColorAttachments, pState->caps.maxTextureAnisotropy, pState->caps.maxRectangleTextureSize));
1134	LogRel(("VMSVGA3d: maxVertexShaderTemps=%-2d maxVertexShaderInstructions=%d maxFragmentShaderInstructions=%d\n",
1135	pState->caps.maxVertexShaderTemps, pState->caps.maxVertexShaderInstructions, pState->caps.maxFragmentShaderInstructions));
1136	LogRel(("VMSVGA3d: maxFragmentShaderTemps=%d flPointSize={%d.%02u, %d.%02u}\n",
1137	pState->caps.maxFragmentShaderTemps,
1138	(int)pState->caps.flPointSize[0], (int)(pState->caps.flPointSize[0] * 100) % 100,
1139	(int)pState->caps.flPointSize[1], (int)(pState->caps.flPointSize[1] * 100) % 100));
1140	LogRel(("VMSVGA3d: fragmentShaderVersion=%-2d vertexShaderVersion=%-2d\n",
1141	pState->caps.fragmentShaderVersion, pState->caps.vertexShaderVersion));
1142	LogRel(("VMSVGA3d: fS3TCSupported=%-2d fTextureFilterAnisotropicSupported=%d\n",
1143	pState->caps.fS3TCSupported, pState->caps.fTextureFilterAnisotropicSupported));
1144
1145
1146	/* Initialize the shader library. */
1147	pState->ShaderIf.pfnSwitchInitProfile = vmsvga3dShaderIfSwitchInitProfile;
1148	pState->ShaderIf.pfnGetNextExtension = vmsvga3dShaderIfGetNextExtension;
1149	rc = ShaderInitLib(&pState->ShaderIf);
1150	AssertRC(rc);
1151
1152	/* Cleanup */
1153	rc = vmsvga3dBackContextDestroy(pThisCC, 1);
1154	AssertRC(rc);
1155	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1156	rc = vmsvga3dBackContextDestroy(pThisCC, 2);
1157	AssertRC(rc);
1158	#endif
1159
1160	if ( pState->rsGLVersion < 3.0
1161	&& pState->rsOtherGLVersion < 3.0 /* darwin: legacy profile hack */)
1162	{
1163	LogRel(("VMSVGA3d: unsupported OpenGL version; minimum is 3.0\n"));
1164	return VERR_NOT_IMPLEMENTED;
1165	}
1166
1167	return VINF_SUCCESS;
1168	}
1169
1170	static DECLCALLBACK(int) vmsvga3dBackReset(PVGASTATECC pThisCC)
1171	{
1172	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1173	AssertReturn(pThisCC->svga.p3dState, VERR_NO_MEMORY);
1174
1175	/* Destroy all leftover surfaces. */
1176	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1177	{
1178	if (pState->papSurfaces[i]->id != SVGA3D_INVALID_ID)
1179	vmsvga3dSurfaceDestroy(pThisCC, pState->papSurfaces[i]->id);
1180	}
1181
1182	/* Destroy all leftover contexts. */
1183	for (uint32_t i = 0; i < pState->cContexts; i++)
1184	{
1185	if (pState->papContexts[i]->id != SVGA3D_INVALID_ID)
1186	vmsvga3dBackContextDestroy(pThisCC, pState->papContexts[i]->id);
1187	}
1188
1189	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1190	vmsvga3dContextDestroyOgl(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID);
1191
1192	return VINF_SUCCESS;
1193	}
1194
1195	static DECLCALLBACK(int) vmsvga3dBackTerminate(PVGASTATECC pThisCC)
1196	{
1197	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1198	AssertReturn(pState, VERR_WRONG_ORDER);
1199	int rc;
1200
1201	rc = vmsvga3dBackReset(pThisCC);
1202	AssertRCReturn(rc, rc);
1203
1204	/* Terminate the shader library. */
1205	rc = ShaderDestroyLib();
1206	AssertRC(rc);
1207
1208	#ifdef RT_OS_WINDOWS
1209	/* Terminate the window creation thread. */
1210	rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_EXIT, 0, 0);
1211	AssertRCReturn(rc, rc);
1212
1213	RTSemEventDestroy(pState->WndRequestSem);
1214	#elif defined(RT_OS_DARWIN)
1215
1216	#elif defined(RT_OS_LINUX)
1217	/* signal to the thread that it is supposed to exit */
1218	pState->bTerminate = true;
1219	/* wait for it to terminate */
1220	rc = RTThreadWait(pState->pWindowThread, 10000, NULL);
1221	AssertRC(rc);
1222	XCloseDisplay(pState->display);
1223	#endif
1224
1225	RTStrFree(pState->pszExtensions);
1226	pState->pszExtensions = NULL;
1227	#ifdef VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE
1228	RTStrFree(pState->pszOtherExtensions);
1229	#endif
1230	pState->pszOtherExtensions = NULL;
1231
1232	return VINF_SUCCESS;
1233	}
1234
1235
1236	static DECLCALLBACK(void) vmsvga3dBackUpdateHostScreenViewport(PVGASTATECC pThisCC, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1237	{
1238	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1239	* redraw it. */
1240
1241	#ifdef RT_OS_DARWIN
1242	RT_NOREF(pOldViewport);
1243	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1244	if ( pState
1245	&& idScreen == 0
1246	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1247	{
1248	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1249	}
1250	#else
1251	RT_NOREF(pThisCC, idScreen, pOldViewport);
1252	#endif
1253	}
1254
1255
1256	/**
1257	* Worker for vmsvga3dBackQueryCaps that figures out supported operations for a
1258	* given surface format capability.
1259	*
1260	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1261	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1262	*
1263	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1264	* of implicit guest expectations:
1265	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1266	*/
1267	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1268	{
1269	uint32_t result = 0;
1270
1271	/** @todo missing:
1272	*
1273	* SVGA3DFORMAT_OP_PIXELSIZE
1274	*/
1275
1276	switch (idx3dCaps)
1277	{
1278	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1279	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1280	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1281	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1282	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1283	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1284	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1285	break;
1286
1287	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1288	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1289	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1290	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1291	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1292	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1293	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1294	break;
1295	}
1296
1297	/** @todo check hardware caps! */
1298	switch (idx3dCaps)
1299	{
1300	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1301	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1302	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1303	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1304	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1305	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1306	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1307	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1308	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1309	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1310	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1311	result \|= SVGA3DFORMAT_OP_TEXTURE
1312	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1313	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1314	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1315	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1316	\| SVGA3DFORMAT_OP_CUBETEXTURE
1317	\| SVGA3DFORMAT_OP_SRGBREAD
1318	\| SVGA3DFORMAT_OP_SRGBWRITE;
1319	break;
1320
1321	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1322	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1323	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1324	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1325	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1326	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1327	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1328	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1329	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1330	break;
1331
1332	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1333	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1334	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1335	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1336	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1337	result \|= SVGA3DFORMAT_OP_TEXTURE
1338	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1339	\| SVGA3DFORMAT_OP_CUBETEXTURE
1340	\| SVGA3DFORMAT_OP_SRGBREAD;
1341	break;
1342
1343	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1344	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1345	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1346	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1347	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1348	break;
1349
1350	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1351	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1352	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1353	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1354	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1355	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1356	result \|= SVGA3DFORMAT_OP_TEXTURE
1357	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1358	\| SVGA3DFORMAT_OP_CUBETEXTURE
1359	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1360	break;
1361
1362	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1363	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1364	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1365	result \|= SVGA3DFORMAT_OP_TEXTURE
1366	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1367	\| SVGA3DFORMAT_OP_CUBETEXTURE
1368	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1369	break;
1370
1371	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1372	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1373	result \|= SVGA3DFORMAT_OP_OFFSCREENPLAIN
1374	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1375	\| SVGA3DFORMAT_OP_TEXTURE;
1376	break;
1377
1378	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1379	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1380	break;
1381	}
1382	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1383
1384	return result;
1385	}
1386
1387	#if 0 /* unused */
1388	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1389	{
1390	RT_NOREF(pState3D, idx3dCaps);
1391
1392	/** @todo test this somehow */
1393	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1394
1395	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1396	return result;
1397	}
1398	#endif
1399
1400
1401	static DECLCALLBACK(int) vmsvga3dBackQueryCaps(PVGASTATECC pThisCC, SVGA3dDevCapIndex idx3dCaps, uint32_t *pu32Val)
1402	{
1403	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1404	AssertReturn(pState, VERR_NO_MEMORY);
1405	int rc = VINF_SUCCESS;
1406
1407	*pu32Val = 0;
1408
1409	/*
1410	* The capabilities access by current (2015-03-01) linux sources (gallium,
1411	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1412	* aren't access.
1413	*/
1414
1415	switch (idx3dCaps)
1416	{
1417	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1418	case SVGA3D_DEVCAP_3D:
1419	pu32Val = 1; / boolean? */
1420	break;
1421
1422	case SVGA3D_DEVCAP_MAX_LIGHTS:
1423	*pu32Val = pState->caps.maxActiveLights;
1424	break;
1425
1426	case SVGA3D_DEVCAP_MAX_TEXTURES:
1427	*pu32Val = pState->caps.maxTextures;
1428	break;
1429
1430	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1431	*pu32Val = pState->caps.maxClipDistances;
1432	break;
1433
1434	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1435	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1436	*pu32Val = pState->caps.vertexShaderVersion;
1437	break;
1438
1439	case SVGA3D_DEVCAP_VERTEX_SHADER:
1440	/* boolean? */
1441	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1442	break;
1443
1444	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1445	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1446	*pu32Val = pState->caps.fragmentShaderVersion;
1447	break;
1448
1449	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1450	/* boolean? */
1451	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1452	break;
1453
1454	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1455	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1456	/* Must be obsolete by now; surface format caps specify the same thing. */
1457	rc = VERR_INVALID_PARAMETER;
1458	break;
1459
1460	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1461	break;
1462
1463	/*
1464	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1465	* return TRUE. Even on physical hardware that does not support
1466	* these formats natively, the SVGA3D device will provide an emulation
1467	* which should be invisible to the guest OS.
1468	*/
1469	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1470	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1471	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1472	*pu32Val = 1;
1473	break;
1474
1475	case SVGA3D_DEVCAP_QUERY_TYPES:
1476	break;
1477
1478	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1479	break;
1480
1481	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1482	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1483	AssertCompile(sizeof(uint32_t) == sizeof(float));
1484	(float )pu32Val = pState->caps.flPointSize[1];
1485	break;
1486
1487	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1488	/** @todo ?? */
1489	rc = VERR_INVALID_PARAMETER;
1490	break;
1491
1492	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1493	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1494	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1495	*pu32Val = pState->caps.maxRectangleTextureSize;
1496	break;
1497
1498	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1499	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1500	//*pu32Val = pCaps->MaxVolumeExtent;
1501	*pu32Val = 256;
1502	break;
1503
1504	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1505	pu32Val = 32768; / hardcoded in Wine */
1506	break;
1507
1508	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1509	//*pu32Val = pCaps->MaxTextureAspectRatio;
1510	break;
1511
1512	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1513	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1514	*pu32Val = pState->caps.maxTextureAnisotropy;
1515	break;
1516
1517	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1518	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1519	pu32Val = 0xFFFFF; / hardcoded in Wine */
1520	break;
1521
1522	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1523	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1524	*pu32Val = pState->caps.maxVertexShaderInstructions;
1525	break;
1526
1527	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1528	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1529	break;
1530
1531	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1532	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1533	*pu32Val = pState->caps.maxVertexShaderTemps;
1534	break;
1535
1536	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1537	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1538	*pu32Val = pState->caps.maxFragmentShaderTemps;
1539	break;
1540
1541	case SVGA3D_DEVCAP_TEXTURE_OPS:
1542	break;
1543
1544	case SVGA3D_DEVCAP_DEAD4: /* SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES */
1545	break;
1546
1547	case SVGA3D_DEVCAP_DEAD5: /* SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES */
1548	break;
1549
1550	case SVGA3D_DEVCAP_DEAD7: /* SVGA3D_DEVCAP_ALPHATOCOVERAGE */
1551	break;
1552
1553	case SVGA3D_DEVCAP_DEAD6: /* SVGA3D_DEVCAP_SUPERSAMPLE */
1554	break;
1555
1556	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1557	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1558	break;
1559
1560	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1561	break;
1562
1563	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1564	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1565	*pu32Val = pState->caps.maxColorAttachments;
1566	break;
1567
1568	/*
1569	* This is the maximum number of SVGA context IDs that the guest
1570	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1571	*/
1572	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1573	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1574	break;
1575
1576	/*
1577	* This is the maximum number of SVGA surface IDs that the guest
1578	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1579	*/
1580	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1581	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1582	break;
1583
1584	#if 0 /* Appeared more recently, not yet implemented. */
1585	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1586	case SVGA3D_DEVCAP_LINE_AA:
1587	break;
1588	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1589	case SVGA3D_DEVCAP_LINE_STIPPLE:
1590	break;
1591	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1592	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1593	break;
1594	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1595	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1596	break;
1597	#endif
1598
1599	/*
1600	* Supported surface formats.
1601	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1602	*/
1603	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1604	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1605	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1606	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1607	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1608	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1609	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1610	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1611	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1612	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1613	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1614	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1615	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1616	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1617	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1618	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1619	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1620	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1621	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1622	break;
1623
1624	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1625	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1626	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1627	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1628	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1629	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1630	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1631	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1632	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1633	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1634	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1635	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1636	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1637	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1638	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1639	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1640	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1641	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1642	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1643	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1644	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1645	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1646	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1647	break;
1648
1649	/* Linux: Not referenced in current sources. */
1650	case SVGA3D_DEVCAP_SURFACEFMT_ATI1:
1651	case SVGA3D_DEVCAP_SURFACEFMT_ATI2:
1652	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1653	rc = VERR_INVALID_PARAMETER;
1654	*pu32Val = 0;
1655	break;
1656
1657	default:
1658	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1659	rc = VERR_INVALID_PARAMETER;
1660	break;
1661	}
1662
1663	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1664	return rc;
1665	}
1666
1667	/**
1668	* Convert SVGA format value to its OpenGL equivalent
1669	*
1670	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1671	* help from wined3dformat_from_d3dformat().
1672	*/
1673	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1674	{
1675	#if 0
1676	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1677	#else
1678	#define AssertTestFmt(f) do {} while(0)
1679	#endif
1680	/* Init cbBlockGL for non-emulated formats. */
1681	pSurface->cbBlockGL = pSurface->cbBlock;
1682
1683	switch (format)
1684	{
1685	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1686	pSurface->internalFormatGL = GL_RGB8;
1687	pSurface->formatGL = GL_BGRA;
1688	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1689	break;
1690	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1691	pSurface->internalFormatGL = GL_RGBA8;
1692	pSurface->formatGL = GL_BGRA;
1693	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1694	break;
1695	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1696	pSurface->internalFormatGL = GL_RGB5;
1697	pSurface->formatGL = GL_RGB;
1698	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1699	AssertTestFmt(SVGA3D_R5G6B5);
1700	break;
1701	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1702	pSurface->internalFormatGL = GL_RGB5;
1703	pSurface->formatGL = GL_BGRA;
1704	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1705	AssertTestFmt(SVGA3D_X1R5G5B5);
1706	break;
1707	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1708	pSurface->internalFormatGL = GL_RGB5_A1;
1709	pSurface->formatGL = GL_BGRA;
1710	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1711	AssertTestFmt(SVGA3D_A1R5G5B5);
1712	break;
1713	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1714	pSurface->internalFormatGL = GL_RGBA4;
1715	pSurface->formatGL = GL_BGRA;
1716	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1717	AssertTestFmt(SVGA3D_A4R4G4B4);
1718	break;
1719
1720	case SVGA3D_R8G8B8A8_UNORM:
1721	pSurface->internalFormatGL = GL_RGBA8;
1722	pSurface->formatGL = GL_RGBA;
1723	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1724	break;
1725
1726	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1727	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1728	pSurface->formatGL = GL_DEPTH_COMPONENT;
1729	pSurface->typeGL = GL_UNSIGNED_INT;
1730	break;
1731	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1732	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1733	pSurface->formatGL = GL_DEPTH_COMPONENT;
1734	pSurface->typeGL = GL_UNSIGNED_SHORT;
1735	AssertTestFmt(SVGA3D_Z_D16);
1736	break;
1737	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1738	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1739	pSurface->formatGL = GL_DEPTH_STENCIL;
1740	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1741	break;
1742	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1743	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1744	pSurface->formatGL = GL_DEPTH_STENCIL;
1745	pSurface->typeGL = GL_UNSIGNED_SHORT;
1746	/** @todo Wine sources hints at no hw support for this, so test this one! */
1747	AssertTestFmt(SVGA3D_Z_D15S1);
1748	break;
1749	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1750	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1751	pSurface->formatGL = GL_DEPTH_COMPONENT;
1752	pSurface->typeGL = GL_UNSIGNED_INT;
1753	AssertTestFmt(SVGA3D_Z_D24X8);
1754	break;
1755
1756	/* Advanced D3D9 depth formats. */
1757	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1758	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1759	pSurface->formatGL = GL_DEPTH_COMPONENT;
1760	pSurface->typeGL = GL_HALF_FLOAT;
1761	break;
1762
1763	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1764	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1765	pSurface->formatGL = GL_DEPTH_COMPONENT;
1766	pSurface->typeGL = GL_FLOAT; /* ??? */
1767	break;
1768
1769	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1770	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1771	pSurface->formatGL = GL_DEPTH_STENCIL;
1772	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1773	break;
1774
1775	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1776	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1777	pSurface->formatGL = GL_RGBA; /* not used */
1778	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1779	break;
1780
1781	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1782	/* "DXT2 and DXT3 are the same from an API perspective." */
1783	RT_FALL_THRU();
1784	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1785	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1786	pSurface->formatGL = GL_RGBA; /* not used */
1787	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1788	break;
1789
1790	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1791	/* "DXT4 and DXT5 are the same from an API perspective." */
1792	RT_FALL_THRU();
1793	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1794	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1795	pSurface->formatGL = GL_RGBA; /* not used */
1796	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1797	break;
1798
1799	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1800	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1801	pSurface->formatGL = GL_LUMINANCE;
1802	pSurface->typeGL = GL_UNSIGNED_BYTE;
1803	break;
1804
1805	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1806	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1807	pSurface->formatGL = GL_LUMINANCE;
1808	pSurface->typeGL = GL_UNSIGNED_SHORT;
1809	break;
1810
1811	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1812	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1813	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1814	pSurface->typeGL = GL_UNSIGNED_BYTE;
1815	break;
1816
1817	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1818	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1819	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1820	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1821	break;
1822
1823	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1824	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1825	pSurface->formatGL = GL_ALPHA;
1826	pSurface->typeGL = GL_UNSIGNED_BYTE;
1827	break;
1828
1829	#if 0
1830
1831	/* Bump-map formats */
1832	case SVGA3D_BUMPU8V8:
1833	return D3DFMT_V8U8;
1834	case SVGA3D_BUMPL6V5U5:
1835	return D3DFMT_L6V5U5;
1836	case SVGA3D_BUMPX8L8V8U8:
1837	return D3DFMT_X8L8V8U8;
1838	case SVGA3D_FORMAT_DEAD1:
1839	/* No corresponding D3D9 equivalent. */
1840	AssertFailedReturn(D3DFMT_UNKNOWN);
1841	/* signed bump-map formats */
1842	case SVGA3D_V8U8:
1843	return D3DFMT_V8U8;
1844	case SVGA3D_Q8W8V8U8:
1845	return D3DFMT_Q8W8V8U8;
1846	case SVGA3D_CxV8U8:
1847	return D3DFMT_CxV8U8;
1848	/* mixed bump-map formats */
1849	case SVGA3D_X8L8V8U8:
1850	return D3DFMT_X8L8V8U8;
1851	case SVGA3D_A2W10V10U10:
1852	return D3DFMT_A2W10V10U10;
1853	#endif
1854
1855	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1856	pSurface->internalFormatGL = GL_RGBA16F;
1857	pSurface->formatGL = GL_RGBA;
1858	#if 0 /* bird: wine uses half float, sounds correct to me... */
1859	pSurface->typeGL = GL_FLOAT;
1860	#else
1861	pSurface->typeGL = GL_HALF_FLOAT;
1862	AssertTestFmt(SVGA3D_ARGB_S10E5);
1863	#endif
1864	break;
1865
1866	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1867	pSurface->internalFormatGL = GL_RGBA32F;
1868	pSurface->formatGL = GL_RGBA;
1869	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1870	break;
1871
1872	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1873	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1874	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1875	pSurface->formatGL = GL_RGBA;
1876	#else
1877	pSurface->formatGL = GL_BGRA;
1878	#endif
1879	pSurface->typeGL = GL_UNSIGNED_INT;
1880	AssertTestFmt(SVGA3D_A2R10G10B10);
1881	break;
1882
1883
1884	/* Single- and dual-component floating point formats */
1885	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1886	pSurface->internalFormatGL = GL_R16F;
1887	pSurface->formatGL = GL_RED;
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_R_S10E5);
1893	#endif
1894	break;
1895	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1896	pSurface->internalFormatGL = GL_R32F;
1897	pSurface->formatGL = GL_RED;
1898	pSurface->typeGL = GL_FLOAT;
1899	break;
1900	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1901	pSurface->internalFormatGL = GL_RG16F;
1902	pSurface->formatGL = GL_RG;
1903	#if 0 /* bird: wine uses half float, sounds correct to me... */
1904	pSurface->typeGL = GL_FLOAT;
1905	#else
1906	pSurface->typeGL = GL_HALF_FLOAT;
1907	AssertTestFmt(SVGA3D_RG_S10E5);
1908	#endif
1909	break;
1910	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1911	pSurface->internalFormatGL = GL_RG32F;
1912	pSurface->formatGL = GL_RG;
1913	pSurface->typeGL = GL_FLOAT;
1914	break;
1915
1916	/*
1917	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1918	* the most efficient format to use when creating new surfaces
1919	* expressly for index or vertex data.
1920	*/
1921	case SVGA3D_BUFFER:
1922	pSurface->internalFormatGL = -1;
1923	pSurface->formatGL = -1;
1924	pSurface->typeGL = -1;
1925	break;
1926
1927	#if 0
1928	return D3DFMT_UNKNOWN;
1929
1930	case SVGA3D_V16U16:
1931	return D3DFMT_V16U16;
1932	#endif
1933
1934	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1935	pSurface->internalFormatGL = GL_RG16;
1936	pSurface->formatGL = GL_RG;
1937	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1938	pSurface->typeGL = GL_UNSIGNED_INT;
1939	#else
1940	pSurface->typeGL = GL_UNSIGNED_SHORT;
1941	AssertTestFmt(SVGA3D_G16R16);
1942	#endif
1943	break;
1944
1945	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1946	pSurface->internalFormatGL = GL_RGBA16;
1947	pSurface->formatGL = GL_RGBA;
1948	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1949	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1950	#else
1951	pSurface->typeGL = GL_UNSIGNED_SHORT;
1952	AssertTestFmt(SVGA3D_A16B16G16R16);
1953	#endif
1954	break;
1955
1956	case SVGA3D_R8G8B8A8_SNORM:
1957	pSurface->internalFormatGL = GL_RGB8;
1958	pSurface->formatGL = GL_BGRA;
1959	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1960	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
1961	break;
1962	case SVGA3D_R16G16_UNORM:
1963	pSurface->internalFormatGL = GL_RG16;
1964	pSurface->formatGL = GL_RG;
1965	pSurface->typeGL = GL_UNSIGNED_SHORT;
1966	AssertTestFmt(SVGA3D_R16G16_UNORM);
1967	break;
1968
1969	/* Packed Video formats */
1970	case SVGA3D_UYVY:
1971	case SVGA3D_YUY2:
1972	/* Use a BRGA texture to hold the data and convert it to an actual BGRA. */
1973	pSurface->fEmulated = true;
1974	pSurface->internalFormatGL = GL_RGBA8;
1975	pSurface->formatGL = GL_BGRA;
1976	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1977	pSurface->cbBlockGL = 4 * pSurface->cxBlock * pSurface->cyBlock;
1978	break;
1979
1980	#if 0
1981	/* Planar video formats */
1982	case SVGA3D_NV12:
1983	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
1984
1985	/* Video format with alpha */
1986	case SVGA3D_FORMAT_DEAD2: /* Old SVGA3D_AYUV */
1987
1988	case SVGA3D_ATI1:
1989	case SVGA3D_ATI2:
1990	/* Unknown; only in DX10 & 11 */
1991	break;
1992	#endif
1993	default:
1994	AssertMsgFailed(("Unsupported format %d\n", format));
1995	break;
1996	}
1997	#undef AssertTestFmt
1998	}
1999
2000
2001	#if 0
2002	/**
2003	* Convert SVGA multi sample count value to its D3D equivalent
2004	*/
2005	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
2006	{
2007	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
2008	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
2009
2010	if (multisampleCount > 16)
2011	return D3DMULTISAMPLE_NONE;
2012
2013	/** @todo exact same mapping as d3d? */
2014	return (D3DMULTISAMPLE_TYPE)multisampleCount;
2015	}
2016	#endif
2017
2018	/**
2019	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
2020	*
2021	* @param pThisCC The device state.
2022	* @param pSurface The surface being destroyed.
2023	*/
2024	static DECLCALLBACK(void) vmsvga3dBackSurfaceDestroy(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
2025	{
2026	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2027	AssertReturnVoid(pState);
2028
2029	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2030	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2031
2032	switch (pSurface->enmOGLResType)
2033	{
2034	case VMSVGA3D_OGLRESTYPE_BUFFER:
2035	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
2036	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
2037	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2038	break;
2039
2040	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2041	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
2042	glDeleteTextures(1, &pSurface->oglId.texture);
2043	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2044	if (pSurface->fEmulated)
2045	{
2046	if (pSurface->idEmulated)
2047	{
2048	glDeleteTextures(1, &pSurface->idEmulated);
2049	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2050	}
2051	}
2052	else
2053	{
2054	Assert(!pSurface->idEmulated);
2055	}
2056	break;
2057
2058	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
2059	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
2060	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
2061	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2062	break;
2063
2064	default:
2065	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
2066	("hint=%#x, type=%d\n",
2067	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
2068	break;
2069	}
2070	}
2071
2072
2073	static DECLCALLBACK(void) vmsvga3dBackSurfaceInvalidateImage(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface, uint32_t uFace, uint32_t uMipmap)
2074	{
2075	RT_NOREF(pThisCC, pSurface, uFace, uMipmap);
2076	}
2077
2078
2079	static DECLCALLBACK(int) vmsvga3dBackSurfaceCopy(PVGASTATECC pThisCC, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src,
2080	uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
2081	{
2082	int rc;
2083
2084	LogFunc(("Copy %d boxes from sid=%u face=%u mipmap=%u to sid=%u face=%u mipmap=%u\n",
2085	cCopyBoxes, src.sid, src.face, src.mipmap, dest.sid, dest.face, dest.mipmap));
2086
2087	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2088	AssertReturn(pState, VERR_INVALID_STATE);
2089
2090	PVMSVGA3DSURFACE pSurfaceSrc;
2091	rc = vmsvga3dSurfaceFromSid(pState, src.sid, &pSurfaceSrc);
2092	AssertRCReturn(rc, rc);
2093
2094	PVMSVGA3DSURFACE pSurfaceDst;
2095	rc = vmsvga3dSurfaceFromSid(pState, dest.sid, &pSurfaceDst);
2096	AssertRCReturn(rc, rc);
2097
2098	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceSrc))
2099	{
2100	/* The source surface is still in memory. */
2101	PVMSVGA3DMIPMAPLEVEL pMipmapLevelSrc;
2102	rc = vmsvga3dMipmapLevel(pSurfaceSrc, src.face, src.mipmap, &pMipmapLevelSrc);
2103	AssertRCReturn(rc, rc);
2104
2105	PVMSVGA3DMIPMAPLEVEL pMipmapLevelDst;
2106	rc = vmsvga3dMipmapLevel(pSurfaceDst, dest.face, dest.mipmap, &pMipmapLevelDst);
2107	AssertRCReturn(rc, rc);
2108
2109	/* The copy operation is performed on the shared context. */
2110	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2111	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2112
2113	/* Use glTexSubImage to upload the data to the destination texture.
2114	* The latter must be an OpenGL texture.
2115	*/
2116	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceDst))
2117	{
2118	LogFunc(("dest sid=%u type=0x%x format=%d -> create texture\n", dest.sid, pSurfaceDst->surfaceFlags, pSurfaceDst->format));
2119	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, pContext->id, pSurfaceDst);
2120	AssertRCReturn(rc, rc);
2121	}
2122
2123	GLenum target;
2124	if (pSurfaceDst->targetGL == GL_TEXTURE_CUBE_MAP)
2125	target = vmsvga3dCubemapFaceFromIndex(dest.face);
2126	else
2127	{
2128	AssertMsg(pSurfaceDst->targetGL == GL_TEXTURE_2D, ("Test %#x\n", pSurfaceDst->targetGL));
2129	target = pSurfaceDst->targetGL;
2130	}
2131
2132	/* Save the unpacking parameters and set what we need here. */
2133	VMSVGAPACKPARAMS SavedParams;
2134	vmsvga3dOglSetUnpackParams(pState, pContext,
2135	pMipmapLevelSrc->mipmapSize.width,
2136	target == GL_TEXTURE_3D ? pMipmapLevelSrc->mipmapSize.height : 0,
2137	&SavedParams);
2138
2139	glBindTexture(pSurfaceDst->targetGL, pSurfaceDst->oglId.texture);
2140	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2141
2142	for (uint32_t i = 0; i < cCopyBoxes; ++i)
2143	{
2144	SVGA3dCopyBox clipBox = pBox[i];
2145	vmsvgaR3ClipCopyBox(&pMipmapLevelSrc->mipmapSize, &pMipmapLevelDst->mipmapSize, &clipBox);
2146	if ( !clipBox.w
2147	\|\| !clipBox.h
2148	\|\| !clipBox.d)
2149	{
2150	LogFunc(("Skipped empty box.\n"));
2151	continue;
2152	}
2153
2154	LogFunc(("copy box %d,%d,%d %dx%d to %d,%d,%d\n",
2155	clipBox.srcx, clipBox.srcy, clipBox.srcz, clipBox.w, clipBox.h, clipBox.x, clipBox.y, clipBox.z));
2156
2157	uint32_t const u32BlockX = clipBox.srcx / pSurfaceSrc->cxBlock;
2158	uint32_t const u32BlockY = clipBox.srcy / pSurfaceSrc->cyBlock;
2159	uint32_t const u32BlockZ = clipBox.srcz;
2160	Assert(u32BlockX * pSurfaceSrc->cxBlock == clipBox.srcx);
2161	Assert(u32BlockY * pSurfaceSrc->cyBlock == clipBox.srcy);
2162
2163	uint8_t const pSrcBits = (uint8_t )pMipmapLevelSrc->pSurfaceData
2164	+ pMipmapLevelSrc->cbSurfacePlane * u32BlockZ
2165	+ pMipmapLevelSrc->cbSurfacePitch * u32BlockY
2166	+ pSurfaceSrc->cbBlock * u32BlockX;
2167
2168	if (target == GL_TEXTURE_3D)
2169	{
2170	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2171	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2172	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2173	{
2174	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2175	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2176	uint32_t const imageSize = cBlocksX * cBlocksY * clipBox.d * pSurfaceSrc->cbBlock;
2177	pState->ext.glCompressedTexSubImage3D(target, dest.mipmap,
2178	clipBox.x, clipBox.y, clipBox.z,
2179	clipBox.w, clipBox.h, clipBox.d,
2180	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2181	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2182	}
2183	else
2184	{
2185	pState->ext.glTexSubImage3D(target, dest.mipmap,
2186	clipBox.x, clipBox.y, clipBox.z,
2187	clipBox.w, clipBox.h, clipBox.d,
2188	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2189	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2190	}
2191	}
2192	else
2193	{
2194	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2195	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2196	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2197	{
2198	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2199	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2200	uint32_t const imageSize = cBlocksX * cBlocksY * pSurfaceSrc->cbBlock;
2201	pState->ext.glCompressedTexSubImage2D(target, dest.mipmap,
2202	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2203	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2204	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2205	}
2206	else
2207	{
2208	glTexSubImage2D(target, dest.mipmap,
2209	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2210	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2211	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2212	}
2213	}
2214	}
2215
2216	glBindTexture(pSurfaceDst->targetGL, 0);
2217	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2218
2219	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2220
2221	return VINF_SUCCESS;
2222	}
2223
2224	PVGASTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVGASTATE);
2225	for (uint32_t i = 0; i < cCopyBoxes; i++)
2226	{
2227	SVGA3dBox destBox, srcBox;
2228
2229	srcBox.x = pBox[i].srcx;
2230	srcBox.y = pBox[i].srcy;
2231	srcBox.z = pBox[i].srcz;
2232	srcBox.w = pBox[i].w;
2233	srcBox.h = pBox[i].h;
2234	srcBox.d = pBox[i].d;
2235
2236	destBox.x = pBox[i].x;
2237	destBox.y = pBox[i].y;
2238	destBox.z = pBox[i].z;
2239	destBox.w = pBox[i].w;
2240	destBox.h = pBox[i].h;
2241	destBox.d = pBox[i].d;
2242
2243	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2244	rc = vmsvga3dSurfaceStretchBlt(pThis, pThisCC, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2245	AssertRCReturn(rc, rc);
2246	}
2247	return VINF_SUCCESS;
2248	}
2249
2250
2251	/**
2252	* Saves texture unpacking parameters and loads the specified ones.
2253	*
2254	* @param pState The VMSVGA3D state structure.
2255	* @param pContext The active context.
2256	* @param cxRow The number of pixels in a row. 0 for the entire width.
2257	* @param cyImage The height of the image in pixels. 0 for the entire height.
2258	* @param pSave Where to save stuff.
2259	*/
2260	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, GLint cxRow, GLint cyImage,
2261	PVMSVGAPACKPARAMS pSave)
2262	{
2263	RT_NOREF(pState);
2264
2265	/*
2266	* Save (ignore errors, setting the defaults we want and avoids restore).
2267	*/
2268	pSave->iAlignment = 1;
2269	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2270	pSave->cxRow = 0;
2271	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2272	pSave->cyImage = 0;
2273	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage), pState, pContext);
2274
2275	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2276	pSave->fSwapBytes = GL_FALSE;
2277	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2278	Assert(pSave->fSwapBytes == GL_FALSE);
2279
2280	pSave->fLsbFirst = GL_FALSE;
2281	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2282	Assert(pSave->fLsbFirst == GL_FALSE);
2283
2284	pSave->cSkipRows = 0;
2285	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2286	Assert(pSave->cSkipRows == 0);
2287
2288	pSave->cSkipPixels = 0;
2289	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2290	Assert(pSave->cSkipPixels == 0);
2291
2292	pSave->cSkipImages = 0;
2293	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2294	Assert(pSave->cSkipImages == 0);
2295
2296	VMSVGA3D_CLEAR_GL_ERRORS();
2297	#endif
2298
2299	/*
2300	* Setup unpack.
2301	*
2302	* Note! We use 1 as alignment here because we currently don't do any
2303	* aligning of line pitches anywhere.
2304	*/
2305	pSave->fChanged = 0;
2306	if (pSave->iAlignment != 1)
2307	{
2308	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2309	pSave->fChanged \|= VMSVGAPACKPARAMS_ALIGNMENT;
2310	}
2311	if (pSave->cxRow != cxRow)
2312	{
2313	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, cxRow), pState, pContext);
2314	pSave->fChanged \|= VMSVGAPACKPARAMS_ROW_LENGTH;
2315	}
2316	if (pSave->cyImage != cyImage)
2317	{
2318	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, cyImage), pState, pContext);
2319	pSave->fChanged \|= VMSVGAPACKPARAMS_IMAGE_HEIGHT;
2320	}
2321	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2322	if (pSave->fSwapBytes != 0)
2323	{
2324	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2325	pSave->fChanged \|= VMSVGAPACKPARAMS_SWAP_BYTES;
2326	}
2327	if (pSave->fLsbFirst != 0)
2328	{
2329	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2330	pSave->fChanged \|= VMSVGAPACKPARAMS_LSB_FIRST;
2331	}
2332	if (pSave->cSkipRows != 0)
2333	{
2334	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2335	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_ROWS;
2336	}
2337	if (pSave->cSkipPixels != 0)
2338	{
2339	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2340	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_PIXELS;
2341	}
2342	if (pSave->cSkipImages != 0)
2343	{
2344	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2345	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_IMAGES;
2346	}
2347	#endif
2348	}
2349
2350
2351	/**
2352	* Restores texture unpacking parameters.
2353	*
2354	* @param pState The VMSVGA3D state structure.
2355	* @param pContext The active context.
2356	* @param pSave Where stuff was saved.
2357	*/
2358	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext,
2359	PCVMSVGAPACKPARAMS pSave)
2360	{
2361	RT_NOREF(pState);
2362
2363	if (pSave->fChanged & VMSVGAPACKPARAMS_ALIGNMENT)
2364	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2365	if (pSave->fChanged & VMSVGAPACKPARAMS_ROW_LENGTH)
2366	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2367	if (pSave->fChanged & VMSVGAPACKPARAMS_IMAGE_HEIGHT)
2368	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2369	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2370	if (pSave->fChanged & VMSVGAPACKPARAMS_SWAP_BYTES)
2371	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2372	if (pSave->fChanged & VMSVGAPACKPARAMS_LSB_FIRST)
2373	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2374	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_ROWS)
2375	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2376	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_PIXELS)
2377	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2378	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_IMAGES)
2379	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2380	#endif
2381	}
2382
2383	/**
2384	* Create D3D/OpenGL texture object for the specified surface.
2385	*
2386	* Surfaces are created when needed.
2387	*
2388	* @param pThisCC The device context.
2389	* @param pContext The context.
2390	* @param idAssociatedContext Probably the same as pContext->id.
2391	* @param pSurface The surface to create the texture for.
2392	*/
2393	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2394	PVMSVGA3DSURFACE pSurface)
2395	{
2396	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2397
2398	RT_NOREF(idAssociatedContext);
2399
2400	LogFunc(("sid=%u\n", pSurface->id));
2401
2402	uint32_t const numMipLevels = pSurface->cLevels;
2403
2404	/* Fugure out what kind of texture we are creating. */
2405	GLenum binding;
2406	GLenum target;
2407	if (pSurface->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
2408	{
2409	Assert(pSurface->cFaces == 6);
2410
2411	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2412	target = GL_TEXTURE_CUBE_MAP;
2413	}
2414	else
2415	{
2416	if (pSurface->paMipmapLevels[0].mipmapSize.depth > 1)
2417	{
2418	binding = GL_TEXTURE_BINDING_3D;
2419	target = GL_TEXTURE_3D;
2420	}
2421	else
2422	{
2423	Assert(pSurface->cFaces == 1);
2424
2425	binding = GL_TEXTURE_BINDING_2D;
2426	target = GL_TEXTURE_2D;
2427	}
2428	}
2429
2430	/* All textures are created in the SharedCtx. */
2431	uint32_t idPrevCtx = pState->idActiveContext;
2432	pContext = &pState->SharedCtx;
2433	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2434
2435	glGenTextures(1, &pSurface->oglId.texture);
2436	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2437	if (pSurface->fEmulated)
2438	{
2439	glGenTextures(1, &pSurface->idEmulated);
2440	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2441	}
2442	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2443
2444	GLint activeTexture = 0;
2445	glGetIntegerv(binding, &activeTexture);
2446	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2447
2448	/* Must bind texture to the current context in order to change it. */
2449	glBindTexture(target, pSurface->oglId.texture);
2450	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2451
2452	/* Set the unpacking parameters. */
2453	VMSVGAPACKPARAMS SavedParams;
2454	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2455
2456	/** @todo Set the mip map generation filter settings. */
2457
2458	/* Set the mipmap base and max level parameters. */
2459	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2460	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2461	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->cLevels - 1);
2462	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2463
2464	if (pSurface->fDirty)
2465	LogFunc(("sync dirty texture\n"));
2466
2467	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2468	if (target == GL_TEXTURE_3D)
2469	{
2470	for (uint32_t i = 0; i < numMipLevels; ++i)
2471	{
2472	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2473	* exposing random host memory to the guest and helps a with the fedora 21 surface
2474	* corruption issues (launchpad, background, search field, login).
2475	*/
2476	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2477
2478	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2479	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2480
2481	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2482	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2483	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2484	{
2485	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2486	i,
2487	pSurface->internalFormatGL,
2488	pMipLevel->mipmapSize.width,
2489	pMipLevel->mipmapSize.height,
2490	pMipLevel->mipmapSize.depth,
2491	0,
2492	pMipLevel->cbSurface,
2493	pMipLevel->pSurfaceData);
2494	}
2495	else
2496	{
2497	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2498	i,
2499	pSurface->internalFormatGL,
2500	pMipLevel->mipmapSize.width,
2501	pMipLevel->mipmapSize.height,
2502	pMipLevel->mipmapSize.depth,
2503	0, /* border */
2504	pSurface->formatGL,
2505	pSurface->typeGL,
2506	pMipLevel->pSurfaceData);
2507	}
2508	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2509
2510	pMipLevel->fDirty = false;
2511	}
2512	}
2513	else if (target == GL_TEXTURE_CUBE_MAP)
2514	{
2515	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2516	{
2517	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2518
2519	for (uint32_t i = 0; i < numMipLevels; ++i)
2520	{
2521	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[iFace * numMipLevels + i];
2522	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2523	Assert(pMipLevel->mipmapSize.depth == 1);
2524
2525	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2526	iFace, i, pMipLevel->fDirty));
2527
2528	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2529	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2530	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2531	{
2532	pState->ext.glCompressedTexImage2D(Face,
2533	i,
2534	pSurface->internalFormatGL,
2535	pMipLevel->mipmapSize.width,
2536	pMipLevel->mipmapSize.height,
2537	0,
2538	pMipLevel->cbSurface,
2539	pMipLevel->pSurfaceData);
2540	}
2541	else
2542	{
2543	glTexImage2D(Face,
2544	i,
2545	pSurface->internalFormatGL,
2546	pMipLevel->mipmapSize.width,
2547	pMipLevel->mipmapSize.height,
2548	0,
2549	pSurface->formatGL,
2550	pSurface->typeGL,
2551	pMipLevel->pSurfaceData);
2552	}
2553	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2554
2555	pMipLevel->fDirty = false;
2556	}
2557	}
2558	}
2559	else if (target == GL_TEXTURE_2D)
2560	{
2561	for (uint32_t i = 0; i < numMipLevels; ++i)
2562	{
2563	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2564	* exposing random host memory to the guest and helps a with the fedora 21 surface
2565	* corruption issues (launchpad, background, search field, login).
2566	*/
2567	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2568	Assert(pMipLevel->mipmapSize.depth == 1);
2569
2570	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2571	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2572
2573	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2574	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2575	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2576	{
2577	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2578	i,
2579	pSurface->internalFormatGL,
2580	pMipLevel->mipmapSize.width,
2581	pMipLevel->mipmapSize.height,
2582	0,
2583	pMipLevel->cbSurface,
2584	pMipLevel->pSurfaceData);
2585	}
2586	else
2587	{
2588	glTexImage2D(GL_TEXTURE_2D,
2589	i,
2590	pSurface->internalFormatGL,
2591	pMipLevel->mipmapSize.width,
2592	pMipLevel->mipmapSize.height,
2593	0,
2594	pSurface->formatGL,
2595	pSurface->typeGL,
2596	NULL);
2597	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2598
2599	if (pSurface->fEmulated)
2600	{
2601	/* Bind the emulated texture and init it. */
2602	glBindTexture(GL_TEXTURE_2D, pSurface->idEmulated);
2603	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2604
2605	glTexImage2D(GL_TEXTURE_2D,
2606	i,
2607	pSurface->internalFormatGL,
2608	pMipLevel->mipmapSize.width,
2609	pMipLevel->mipmapSize.height,
2610	0,
2611	pSurface->formatGL,
2612	pSurface->typeGL,
2613	NULL);
2614	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2615	}
2616
2617	/* Fetch texture data: either to the actual or to the emulated texture.
2618	* The pSurfaceData buffer may be smaller than the entire texture
2619	* for emulated formats, in which case only part of the texture is synched.
2620	*/
2621	uint32_t cBlocksX = pMipLevel->mipmapSize.width / pSurface->cxBlock;
2622	uint32_t cBlocksY = pMipLevel->mipmapSize.height / pSurface->cyBlock;
2623	glTexSubImage2D(GL_TEXTURE_2D,
2624	i,
2625	0,
2626	0,
2627	cBlocksX,
2628	cBlocksY,
2629	pSurface->formatGL,
2630	pSurface->typeGL,
2631	pMipLevel->pSurfaceData);
2632	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2633
2634	if (pSurface->fEmulated)
2635	{
2636	/* Update the actual texture using the format converter. */
2637	FormatConvUpdateTexture(pState, pContext, pSurface, i);
2638
2639	/* Rebind the actual texture. */
2640	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
2641	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2642	}
2643	}
2644	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2645
2646	pMipLevel->fDirty = false;
2647	}
2648	}
2649
2650	pSurface->fDirty = false;
2651
2652	/* Restore unpacking parameters. */
2653	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2654
2655	/* Restore the old active texture. */
2656	glBindTexture(target, activeTexture);
2657	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2658
2659	pSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2660	pSurface->targetGL = target;
2661	pSurface->bindingGL = binding;
2662
2663	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2664	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2665	return VINF_SUCCESS;
2666	}
2667
2668
2669	/**
2670	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2671	*
2672	* @returns VBox status code.
2673	* @param pThis The VGA device instance.
2674	* @param pState The VMSVGA3d state.
2675	* @param pDstSurface The destination host surface.
2676	* @param uDstFace The destination face (valid).
2677	* @param uDstMipmap The destination mipmap level (valid).
2678	* @param pDstBox The destination box.
2679	* @param pSrcSurface The source host surface.
2680	* @param uSrcFace The destination face (valid).
2681	* @param uSrcMipmap The source mimap level (valid).
2682	* @param pSrcBox The source box.
2683	* @param enmMode The strecht blt mode .
2684	* @param pContext The VMSVGA3d context (already current for OGL).
2685	*/
2686	static DECLCALLBACK(int) vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2687	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2688	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2689	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2690	{
2691	RT_NOREF(pThis);
2692
2693	AssertReturn( RT_BOOL(pSrcSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2694	== RT_BOOL(pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2695
2696	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2697	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2698	if (pDstSurface->surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2699	{
2700	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2701	glAttachment = GL_DEPTH_ATTACHMENT;
2702	glMask = GL_DEPTH_BUFFER_BIT;
2703	}
2704
2705	/* Activate the read and draw framebuffer objects. */
2706	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2707	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2708	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2709	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2710
2711	/* Bind the source and destination objects to the right place. */
2712	GLenum textarget;
2713	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2714	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2715	else
2716	{
2717	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2718	textarget = GL_TEXTURE_2D;
2719	}
2720	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2721	pSrcSurface->oglId.texture, uSrcMipmap);
2722	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2723
2724	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2725	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2726	else
2727	{
2728	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2729	textarget = GL_TEXTURE_2D;
2730	}
2731	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2732	pDstSurface->oglId.texture, uDstMipmap);
2733	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2734
2735	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2736	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2737	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2738	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2739	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2740
2741	pState->ext.glBlitFramebuffer(pSrcBox->x,
2742	pSrcBox->y,
2743	pSrcBox->x + pSrcBox->w, /* exclusive. */
2744	pSrcBox->y + pSrcBox->h,
2745	pDstBox->x,
2746	pDstBox->y,
2747	pDstBox->x + pDstBox->w, /* exclusive. */
2748	pDstBox->y + pDstBox->h,
2749	glMask,
2750	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2751	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2752
2753	/* Reset the frame buffer association */
2754	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2755	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2756
2757	return VINF_SUCCESS;
2758	}
2759
2760	/**
2761	* Save texture packing parameters and loads those appropriate for the given
2762	* surface.
2763	*
2764	* @param pState The VMSVGA3D state structure.
2765	* @param pContext The active context.
2766	* @param pSurface The surface.
2767	* @param pSave Where to save stuff.
2768	*/
2769	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2770	PVMSVGAPACKPARAMS pSave)
2771	{
2772	RT_NOREF(pState);
2773	/*
2774	* Save (ignore errors, setting the defaults we want and avoids restore).
2775	*/
2776	pSave->iAlignment = 1;
2777	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2778	pSave->cxRow = 0;
2779	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2780
2781	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2782	pSave->cyImage = 0;
2783	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2784	Assert(pSave->cyImage == 0);
2785
2786	pSave->fSwapBytes = GL_FALSE;
2787	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2788	Assert(pSave->fSwapBytes == GL_FALSE);
2789
2790	pSave->fLsbFirst = GL_FALSE;
2791	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2792	Assert(pSave->fLsbFirst == GL_FALSE);
2793
2794	pSave->cSkipRows = 0;
2795	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2796	Assert(pSave->cSkipRows == 0);
2797
2798	pSave->cSkipPixels = 0;
2799	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2800	Assert(pSave->cSkipPixels == 0);
2801
2802	pSave->cSkipImages = 0;
2803	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2804	Assert(pSave->cSkipImages == 0);
2805
2806	VMSVGA3D_CLEAR_GL_ERRORS();
2807	#endif
2808
2809	/*
2810	* Setup unpack.
2811	*
2812	* Note! We use 1 as alignment here because we currently don't do any
2813	* aligning of line pitches anywhere.
2814	*/
2815	NOREF(pSurface);
2816	if (pSave->iAlignment != 1)
2817	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2818	if (pSave->cxRow != 0)
2819	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2820	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2821	if (pSave->cyImage != 0)
2822	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2823	if (pSave->fSwapBytes != 0)
2824	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2825	if (pSave->fLsbFirst != 0)
2826	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2827	if (pSave->cSkipRows != 0)
2828	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2829	if (pSave->cSkipPixels != 0)
2830	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2831	if (pSave->cSkipImages != 0)
2832	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2833	#endif
2834	}
2835
2836
2837	/**
2838	* Restores texture packing parameters.
2839	*
2840	* @param pState The VMSVGA3D state structure.
2841	* @param pContext The active context.
2842	* @param pSurface The surface.
2843	* @param pSave Where stuff was saved.
2844	*/
2845	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2846	PCVMSVGAPACKPARAMS pSave)
2847	{
2848	RT_NOREF(pState, pSurface);
2849	if (pSave->iAlignment != 1)
2850	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2851	if (pSave->cxRow != 0)
2852	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2853	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2854	if (pSave->cyImage != 0)
2855	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2856	if (pSave->fSwapBytes != 0)
2857	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2858	if (pSave->fLsbFirst != 0)
2859	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2860	if (pSave->cSkipRows != 0)
2861	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2862	if (pSave->cSkipPixels != 0)
2863	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2864	if (pSave->cSkipImages != 0)
2865	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2866	#endif
2867	}
2868
2869
2870	/**
2871	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2872	*
2873	* @returns Failure status code or @a rc.
2874	* @param pThis The shared VGA/VMSVGA instance data.
2875	* @param pThisCC The VGA/VMSVGA state for ring-3.
2876	* @param pState The VMSVGA3d state.
2877	* @param pSurface The host surface.
2878	* @param pMipLevel Mipmap level. The caller knows it already.
2879	* @param uHostFace The host face (valid).
2880	* @param uHostMipmap The host mipmap level (valid).
2881	* @param GuestPtr The guest pointer.
2882	* @param cbGuestPitch The guest pitch.
2883	* @param transfer The transfer direction.
2884	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2885	* @param pContext The context (for OpenGL).
2886	* @param rc The current rc for all boxes.
2887	* @param iBox The current box number (for Direct 3D).
2888	*/
2889	static DECLCALLBACK(int) vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVGASTATECC pThisCC, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2890	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2891	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2892	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2893	{
2894	RT_NOREF(iBox);
2895
2896	switch (pSurface->enmOGLResType)
2897	{
2898	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2899	{
2900	uint32_t cbSurfacePitch;
2901	uint8_t *pDoubleBuffer;
2902	uint64_t offHst;
2903
2904	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2905	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2906	uint32_t const u32HostZ = pBox->z;
2907	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2908	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2909
2910	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2911	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2912	uint32_t const u32GuestZ = pBox->srcz / pSurface->cyBlock;
2913	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2914	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2915
2916	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2917	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2918	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2919
2920	GLenum texImageTarget;
2921	if (pSurface->targetGL == GL_TEXTURE_3D)
2922	{
2923	texImageTarget = GL_TEXTURE_3D;
2924	}
2925	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2926	{
2927	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2928	}
2929	else
2930	{
2931	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2932	texImageTarget = GL_TEXTURE_2D;
2933	}
2934
2935	/* The buffer must be large enough to hold entire texture in the OpenGL format. */
2936	pDoubleBuffer = (uint8_t )RTMemAlloc(pSurface->cbBlockGL pMipLevel->cBlocks);
2937	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2938
2939	if (transfer == SVGA3D_READ_HOST_VRAM)
2940	{
2941	/* Read the entire texture to the double buffer. */
2942	GLint activeTexture;
2943
2944	/* Must bind texture to the current context in order to read it. */
2945	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2946	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2947
2948	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2949	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2950
2951	if (pSurface->fEmulated)
2952	{
2953	FormatConvReadTexture(pState, pContext, pSurface, uHostMipmap);
2954	}
2955
2956	/* Set row length and alignment of the input data. */
2957	VMSVGAPACKPARAMS SavedParams;
2958	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2959
2960	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2961	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2962	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2963	{
2964	pState->ext.glGetCompressedTexImage(texImageTarget, uHostMipmap, pDoubleBuffer);
2965	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2966	}
2967	else
2968	{
2969	glGetTexImage(texImageTarget, uHostMipmap, pSurface->formatGL, pSurface->typeGL, pDoubleBuffer);
2970	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2971	}
2972
2973	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
2974
2975	/* Restore the old active texture. */
2976	glBindTexture(pSurface->targetGL, activeTexture);
2977	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2978
2979	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch + u32HostZ * pMipLevel->cbSurfacePlane;
2980	cbSurfacePitch = pMipLevel->cbSurfacePitch;
2981	}
2982	else
2983	{
2984	/* The buffer will contain only the copied rectangle. */
2985	offHst = 0;
2986	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
2987	}
2988
2989	uint64_t offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch + u32GuestZ * cbGuestPitch * pMipLevel->mipmapSize.height;
2990
2991	for (uint32_t iPlane = 0; iPlane < pBox->d; ++iPlane)
2992	{
2993	AssertBreak(offHst < UINT32_MAX);
2994	AssertBreak(offGst < UINT32_MAX);
2995
2996	rc = vmsvgaR3GmrTransfer(pThis,
2997	pThisCC,
2998	transfer,
2999	pDoubleBuffer,
3000	pMipLevel->cbSurface,
3001	(uint32_t)offHst,
3002	cbSurfacePitch,
3003	GuestPtr,
3004	(uint32_t)offGst,
3005	cbGuestPitch,
3006	cBlocksX * pSurface->cbBlock,
3007	cBlocksY);
3008	AssertRC(rc);
3009
3010	offHst += pMipLevel->cbSurfacePlane;
3011	offGst += pMipLevel->mipmapSize.height * cbGuestPitch;
3012	}
3013
3014	/* Update the opengl surface data. */
3015	if (transfer == SVGA3D_WRITE_HOST_VRAM)
3016	{
3017	GLint activeTexture = 0;
3018	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3019	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3020
3021	/* Must bind texture to the current context in order to change it. */
3022	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
3023	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3024
3025	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
3026
3027	/* Set row length and alignment of the input data. */
3028	/* We do not need to set ROW_LENGTH to w here, because the image in pDoubleBuffer is tightly packed. */
3029	VMSVGAPACKPARAMS SavedParams;
3030	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
3031
3032	if (texImageTarget == GL_TEXTURE_3D)
3033	{
3034	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3035	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3036	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3037	{
3038	pState->ext.glCompressedTexSubImage3D(texImageTarget,
3039	uHostMipmap,
3040	pBox->x,
3041	pBox->y,
3042	pBox->z,
3043	pBox->w,
3044	pBox->h,
3045	pBox->d,
3046	pSurface->internalFormatGL,
3047	cbSurfacePitch * cBlocksY * pBox->d,
3048	pDoubleBuffer);
3049	}
3050	else
3051	{
3052	pState->ext.glTexSubImage3D(texImageTarget,
3053	uHostMipmap,
3054	u32HostBlockX,
3055	u32HostBlockY,
3056	pBox->z,
3057	cBlocksX,
3058	cBlocksY,
3059	pBox->d,
3060	pSurface->formatGL,
3061	pSurface->typeGL,
3062	pDoubleBuffer);
3063	}
3064	}
3065	else
3066	{
3067	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3068	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3069	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3070	{
3071	pState->ext.glCompressedTexSubImage2D(texImageTarget,
3072	uHostMipmap,
3073	pBox->x,
3074	pBox->y,
3075	pBox->w,
3076	pBox->h,
3077	pSurface->internalFormatGL,
3078	cbSurfacePitch * cBlocksY,
3079	pDoubleBuffer);
3080	}
3081	else
3082	{
3083	glTexSubImage2D(texImageTarget,
3084	uHostMipmap,
3085	u32HostBlockX,
3086	u32HostBlockY,
3087	cBlocksX,
3088	cBlocksY,
3089	pSurface->formatGL,
3090	pSurface->typeGL,
3091	pDoubleBuffer);
3092	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3093
3094	if (pSurface->fEmulated)
3095	{
3096	/* Convert the texture to the actual texture if necessary */
3097	FormatConvUpdateTexture(pState, pContext, pSurface, uHostMipmap);
3098	}
3099	}
3100	}
3101	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3102
3103	/* Restore old values. */
3104	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
3105
3106	/* Restore the old active texture. */
3107	glBindTexture(pSurface->targetGL, activeTexture);
3108	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3109	}
3110
3111	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
3112
3113	/* Free the double buffer. */
3114	RTMemFree(pDoubleBuffer);
3115	break;
3116	}
3117
3118	case VMSVGA3D_OGLRESTYPE_BUFFER:
3119	{
3120	/* Buffers are uncompressed. */
3121	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
3122
3123	/* Caller already clipped pBox and buffers are 1-dimensional. */
3124	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
3125
3126	VMSVGA3D_CLEAR_GL_ERRORS();
3127	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
3128	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
3129	{
3130	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
3131	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
3132	if (RT_LIKELY(pbData != NULL))
3133	{
3134	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
3135	GLint cbStrictBufSize;
3136	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
3137	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
3138	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
3139	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
3140	#endif
3141	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
3142	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
3143	(pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
3144	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
3145
3146	/* The caller already copied the data to the pMipLevel->pSurfaceData buffer, see VMSVGA3DSURFACE_NEEDS_DATA. */
3147	uint32_t const offHst = pBox->x * pSurface->cbBlock;
3148	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
3149
3150	memcpy(pbData + offHst, (uint8_t *)pMipLevel->pSurfaceData + offHst, cbWidth);
3151
3152	Log4(("Buffer updated at [0x%x;0x%x):\n%.Rhxd\n", offHst, offHst + cbWidth, cbWidth, (uint8_t )pbData + offHst));
3153
3154	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
3155	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3156	}
3157	else
3158	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
3159	}
3160	else
3161	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
3162	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
3163	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3164	break;
3165	}
3166
3167	default:
3168	AssertFailed();
3169	break;
3170	}
3171
3172	return rc;
3173	}
3174
3175	static DECLCALLBACK(int) vmsvga3dBackGenerateMipmaps(PVGASTATECC pThisCC, uint32_t sid, SVGA3dTextureFilter filter)
3176	{
3177	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3178	PVMSVGA3DSURFACE pSurface;
3179	int rc = VINF_SUCCESS;
3180	PVMSVGA3DCONTEXT pContext;
3181	uint32_t cid;
3182	GLint activeTexture = 0;
3183
3184	AssertReturn(pState, VERR_NO_MEMORY);
3185
3186	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
3187	AssertRCReturn(rc, rc);
3188
3189	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
3190	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
3191	pSurface->autogenFilter = filter;
3192
3193	LogFunc(("sid=%u filter=%d\n", sid, filter));
3194
3195	cid = SVGA3D_INVALID_ID;
3196	pContext = &pState->SharedCtx;
3197	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3198
3199	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
3200	{
3201	/* Unknown surface type; turn it into a texture. */
3202	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->surfaceFlags, pSurface->format));
3203	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
3204	AssertRCReturn(rc, rc);
3205	}
3206	else
3207	{
3208	/** @todo new filter */
3209	AssertFailed();
3210	}
3211
3212	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3213	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3214
3215	/* Must bind texture to the current context in order to change it. */
3216	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
3217	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3218
3219	/* Generate the mip maps. */
3220	pState->ext.glGenerateMipmap(pSurface->targetGL);
3221	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3222
3223	/* Restore the old texture. */
3224	glBindTexture(pSurface->targetGL, activeTexture);
3225	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3226
3227	return VINF_SUCCESS;
3228	}
3229
3230
3231	#ifdef RT_OS_LINUX
3232	/**
3233	* X11 event handling thread.
3234	*
3235	* @returns VINF_SUCCESS (ignored)
3236	* @param hThreadSelf thread handle
3237	* @param pvUser pointer to pState structure
3238	*/
3239	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3240	{
3241	RT_NOREF(hThreadSelf);
3242	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3243	while (!pState->bTerminate)
3244	{
3245	while (XPending(pState->display) > 0)
3246	{
3247	XEvent event;
3248	XNextEvent(pState->display, &event);
3249
3250	switch (event.type)
3251	{
3252	default:
3253	break;
3254	}
3255	}
3256	/* sleep for 16ms to not burn too many cycles */
3257	RTThreadSleep(16);
3258	}
3259	return VINF_SUCCESS;
3260	}
3261	#endif // RT_OS_LINUX
3262
3263
3264	/**
3265	* Create a new 3d context
3266	*
3267	* @returns VBox status code.
3268	* @param pThisCC The VGA/VMSVGA state for ring-3.
3269	* @param cid Context id
3270	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3271	*/
3272	int vmsvga3dContextDefineOgl(PVGASTATECC pThisCC, uint32_t cid, uint32_t fFlags)
3273	{
3274	int rc;
3275	PVMSVGA3DCONTEXT pContext;
3276	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3277
3278	AssertReturn(pState, VERR_NO_MEMORY);
3279	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3280	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3281	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3282	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3283	#endif
3284
3285	Log(("vmsvga3dContextDefine id %x\n", cid));
3286
3287	if (cid == VMSVGA3D_SHARED_CTX_ID)
3288	pContext = &pState->SharedCtx;
3289	else
3290	{
3291	if (cid >= pState->cContexts)
3292	{
3293	/* Grow the array. */
3294	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3295	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3296	AssertReturn(pvNew, VERR_NO_MEMORY);
3297	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3298	while (pState->cContexts < cNew)
3299	{
3300	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3301	AssertReturn(pContext, VERR_NO_MEMORY);
3302	pContext->id = SVGA3D_INVALID_ID;
3303	pState->papContexts[pState->cContexts++] = pContext;
3304	}
3305	}
3306	/* If one already exists with this id, then destroy it now. */
3307	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3308	vmsvga3dBackContextDestroy(pThisCC, cid);
3309
3310	pContext = pState->papContexts[cid];
3311	}
3312
3313	/*
3314	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3315	*/
3316	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3317	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3318	{
3319	pSharedCtx = &pState->SharedCtx;
3320	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3321	{
3322	rc = vmsvga3dContextDefineOgl(pThisCC, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3323	AssertLogRelRCReturn(rc, rc);
3324
3325	/* Create resources which use the shared context. */
3326	vmsvga3dOnSharedContextDefine(pState);
3327	}
3328	}
3329
3330	/*
3331	* Initialize the context.
3332	*/
3333	memset(pContext, 0, sizeof(*pContext));
3334	pContext->id = cid;
3335	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3336	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3337
3338	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3339	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3340	pContext->idFramebuffer = OPENGL_INVALID_ID;
3341	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3342	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3343
3344	rc = ShaderContextCreate(&pContext->pShaderContext);
3345	AssertRCReturn(rc, rc);
3346
3347	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3348	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3349
3350	#ifdef RT_OS_WINDOWS
3351	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3352	* to present the rendered image. Rendered images from the guest will be copied to
3353	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3354	* system memory in the guest VRAM.
3355	*/
3356	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3357	AssertRCReturn(rc, rc);
3358
3359	pContext->hdc = GetDC(pContext->hwnd);
3360	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3361
3362	PIXELFORMATDESCRIPTOR pfd = {
3363	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3364	1, /* version number */
3365	PFD_DRAW_TO_WINDOW \| /* support window */
3366	PFD_SUPPORT_OPENGL, /* support OpenGL */
3367	PFD_TYPE_RGBA, /* RGBA type */
3368	24, /* 24-bit color depth */
3369	0, 0, 0, 0, 0, 0, /* color bits ignored */
3370	8, /* alpha buffer */
3371	0, /* shift bit ignored */
3372	0, /* no accumulation buffer */
3373	0, 0, 0, 0, /* accum bits ignored */
3374	16, /* set depth buffer */
3375	16, /* set stencil buffer */
3376	0, /* no auxiliary buffer */
3377	PFD_MAIN_PLANE, /* main layer */
3378	0, /* reserved */
3379	0, 0, 0 /* layer masks ignored */
3380	};
3381	int pixelFormat;
3382	BOOL ret;
3383
3384	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3385	/** @todo is this really necessary?? */
3386	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3387	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3388
3389	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3390	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3391
3392	pContext->hglrc = wglCreateContext(pContext->hdc);
3393	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3394
3395	if (pSharedCtx)
3396	{
3397	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3398	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3399	}
3400
3401	#elif defined(RT_OS_DARWIN)
3402	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3403
3404	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3405	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3406	NULL,
3407	4, 4,
3408	pShareContext, pContext->fOtherProfile);
3409
3410	#else
3411	if (pState->display == NULL)
3412	{
3413	/* get an X display and make sure we have glX 1.3 */
3414	pState->display = XOpenDisplay(0);
3415	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3416	int glxMajor, glxMinor;
3417	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3418	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3419	/* start our X event handling thread */
3420	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3421	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3422	}
3423
3424	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3425	/* Create a small 4x4 window required for GL context. */
3426	int attrib[] =
3427	{
3428	GLX_RGBA,
3429	GLX_RED_SIZE, 1,
3430	GLX_GREEN_SIZE, 1,
3431	GLX_BLUE_SIZE, 1,
3432	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3433	GLX_DOUBLEBUFFER,
3434	None
3435	};
3436	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3437	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3438	XSetWindowAttributes swa;
3439	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3440	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3441	swa.border_pixel = 0;
3442	swa.background_pixel = 0;
3443	swa.event_mask = StructureNotifyMask;
3444	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3445	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3446	0, 0, 4, 4,
3447	0, vi->depth, InputOutput,
3448	vi->visual, flags, &swa);
3449	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3450
3451	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3452
3453	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3454	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3455	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3456	#endif
3457
3458	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3459
3460	/* NULL during the first PowerOn call. */
3461	if (pState->ext.glGenFramebuffers)
3462	{
3463	/* Create a framebuffer object for this context. */
3464	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3465	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3466
3467	/* Bind the object to the framebuffer target. */
3468	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3469	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3470
3471	/* Create read and draw framebuffer objects for this context. */
3472	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3473	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3474
3475	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3476	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3477
3478	}
3479	#if 0
3480	/** @todo move to shader lib!!! */
3481	/* Clear the screen */
3482	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3483
3484	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3485	glClearIndex(0);
3486	glClearDepth(1);
3487	glClearStencil(0xffff);
3488	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3489	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3490	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3491	if (pState->ext.glProvokingVertex)
3492	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3493	/** @todo move to shader lib!!! */
3494	#endif
3495	return VINF_SUCCESS;
3496	}
3497
3498	#if defined(RT_OS_LINUX)
3499	/*
3500	* HW accelerated graphics output.
3501	*/
3502
3503	/**
3504	* VMSVGA3d screen data.
3505	*
3506	* Allocated on the heap and pointed to by VMSVGASCREENOBJECT::pHwScreen.
3507	*/
3508	typedef struct VMSVGAHWSCREEN
3509	{
3510	/* OpenGL context, which is used for the screen updates. */
3511	GLXContext glxctx;
3512
3513	/* The overlay window. */
3514	Window xwindow;
3515
3516	/* The RGBA texture which hold the screen content. */
3517	GLuint idScreenTexture;
3518
3519	/* Read and draw framebuffer objects for copying a surface to the screen texture. */
3520	GLuint idReadFramebuffer;
3521	GLuint idDrawFramebuffer;
3522	} VMSVGAHWSCREEN;
3523
3524	/* Send a notification to the UI. */
3525	#if 0 /* Unused */
3526	static int vmsvga3dDrvNotifyHwScreen(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification,
3527	uint32_t idScreen, Pixmap pixmap, void *pvData, size_t cbData)
3528	{
3529	uint8_t au8Buffer[128];
3530	AssertLogRelMsgReturn(cbData <= sizeof(au8Buffer) - sizeof(VBOX3DNOTIFY),
3531	("cbData %zu", cbData),
3532	VERR_INVALID_PARAMETER);
3533
3534	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3535	p->enmNotification = enmNotification;
3536	p->iDisplay = idScreen;
3537	p->u32Reserved = 0;
3538	p->cbData = cbData + sizeof(uint64_t);
3539	/* au8Data consists of a 64 bit pixmap handle followed by notification specific data. */
3540	AssertCompile(sizeof(pixmap) <= sizeof(uint64_t));
3541	(uint64_t )&p->au8Data[0] = (uint64_t)pixmap;
3542	memcpy(&p->au8Data[sizeof(uint64_t)], pvData, cbData);
3543
3544	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3545	return rc;
3546	}
3547	#endif /* Unused */
3548
3549	static void vmsvga3dDrvNotifyHwOverlay(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification, uint32_t idScreen)
3550	{
3551	uint8_t au8Buffer[128];
3552	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3553	p->enmNotification = enmNotification;
3554	p->iDisplay = idScreen;
3555	p->u32Reserved = 0;
3556	p->cbData = sizeof(uint64_t);
3557	(uint64_t )&p->au8Data[0] = 0;
3558
3559	pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3560	}
3561
3562	/* Get X Window handle of the UI Framebuffer window. */
3563	static int vmsvga3dDrvQueryWindow(PVGASTATECC pThisCC, uint32_t idScreen, Window *pWindow)
3564	{
3565	uint8_t au8Buffer[128];
3566	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3567	p->enmNotification = VBOX3D_NOTIFY_TYPE_HW_OVERLAY_GET_ID;
3568	p->iDisplay = idScreen;
3569	p->u32Reserved = 0;
3570	p->cbData = sizeof(uint64_t);
3571	(uint64_t )&p->au8Data[0] = 0;
3572
3573	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3574	if (RT_SUCCESS(rc))
3575	{
3576	pWindow = (Window)(uint64_t *)&p->au8Data[0];
3577	}
3578	return rc;
3579	}
3580
3581	static int ctxErrorHandler(Display dpy, XErrorEvent ev)
3582	{
3583	RT_NOREF(dpy);
3584	LogRel4(("VMSVGA: XError %d\n", (int)ev->error_code));
3585	return 0;
3586	}
3587
3588	/* Create an overlay X window for the HW accelerated screen. */
3589	static int vmsvga3dHwScreenCreate(PVMSVGA3DSTATE pState, Window parentWindow, unsigned int cWidth, unsigned int cHeight, VMSVGAHWSCREEN *p)
3590	{
3591	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3592
3593	int rc = VINF_SUCCESS;
3594
3595	XWindowAttributes parentAttr;
3596	if (XGetWindowAttributes(pState->display, parentWindow, &parentAttr) == 0)
3597	return VERR_INVALID_PARAMETER;
3598
3599	int const idxParentScreen = XScreenNumberOfScreen(parentAttr.screen);
3600
3601	/*
3602	* Create a new GL context, which will be used for copying to the screen.
3603	*/
3604
3605	/* FBConfig attributes for the overlay window. */
3606	static int const aConfigAttribList[] =
3607	{
3608	GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, // Must support GLX windows
3609	GLX_DOUBLEBUFFER, False, // Double buffering had a much lower performance.
3610	GLX_RED_SIZE, 8, // True color RGB with 8 bits per channel.
3611	GLX_GREEN_SIZE, 8,
3612	GLX_BLUE_SIZE, 8,
3613	GLX_ALPHA_SIZE, 8,
3614	GLX_STENCIL_SIZE, 0, // No stencil buffer
3615	GLX_DEPTH_SIZE, 0, // No depth buffer
3616	None
3617	};
3618
3619	/* Find a suitable FB config. */
3620	int cConfigs = 0;
3621	GLXFBConfig *paConfigs = glXChooseFBConfig(pState->display, idxParentScreen, aConfigAttribList, &cConfigs);
3622	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: paConfigs %p cConfigs %d\n", (void *)paConfigs, cConfigs));
3623	if (paConfigs)
3624	{
3625	XVisualInfo *vi = NULL;
3626	int i = 0;
3627	for (; i < cConfigs; ++i)
3628	{
3629	/* Use XFree to free the data returned in the previous iteration of this loop. */
3630	if (vi)
3631	XFree(vi);
3632
3633	vi = glXGetVisualFromFBConfig(pState->display, paConfigs[i]);
3634	if (!vi)
3635	continue;
3636
3637	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: %p vid %lu screen %d depth %d r %lu g %lu b %lu clrmap %d bitsperrgb %d\n",
3638	(void *)vi->visual, vi->visualid, vi->screen, vi->depth,
3639	vi->red_mask, vi->green_mask, vi->blue_mask, vi->colormap_size, vi->bits_per_rgb));
3640
3641	/* Same screen as the parent window. */
3642	if (vi->screen != idxParentScreen)
3643	continue;
3644
3645	/* Search for 32 bits per pixel. */
3646	if (vi->depth != 32)
3647	continue;
3648
3649	/* 8 bits per color component is enough. */
3650	if (vi->bits_per_rgb != 8)
3651	continue;
3652
3653	/* Render to pixmap. */
3654	int value = 0;
3655	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_DRAWABLE_TYPE, &value);
3656	if (!(value & GLX_WINDOW_BIT))
3657	continue;
3658
3659	/* This FB config can be used. */
3660	break;
3661	}
3662
3663	if (i < cConfigs)
3664	{
3665	/* Found a suitable config with index i. */
3666
3667	/* Create an overlay window. */
3668	XSetWindowAttributes swa;
3669	RT_ZERO(swa);
3670
3671	swa.colormap = XCreateColormap(pState->display, parentWindow, vi->visual, AllocNone);
3672	AssertLogRelMsg(swa.colormap, ("XCreateColormap failed"));
3673	swa.border_pixel = 0;
3674	swa.background_pixel = 0;
3675	swa.event_mask = StructureNotifyMask;
3676	swa.override_redirect = 1;
3677	unsigned long const swaAttrs = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask \| CWOverrideRedirect;
3678	p->xwindow = XCreateWindow(pState->display, parentWindow,
3679	0, 0, cWidth, cHeight, 0, vi->depth, InputOutput,
3680	vi->visual, swaAttrs, &swa);
3681	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->xwindow %ld\n", p->xwindow));
3682	if (p->xwindow)
3683	{
3684
3685	p->glxctx = glXCreateContext(pState->display, vi, pState->SharedCtx.glxContext, GL_TRUE);
3686	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxctx %p\n", (void *)p->glxctx));
3687	if (p->glxctx)
3688	{
3689	XMapWindow(pState->display, p->xwindow);
3690	}
3691	else
3692	{
3693	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: glXCreateContext failed\n"));
3694	rc = VERR_NOT_SUPPORTED;
3695	}
3696	}
3697	else
3698	{
3699	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: XCreateWindow failed\n"));
3700	rc = VERR_NOT_SUPPORTED;
3701	}
3702
3703	XSync(pState->display, False);
3704	}
3705	else
3706	{
3707	/* A suitable config is not found. */
3708	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: no FBConfig\n"));
3709	rc = VERR_NOT_SUPPORTED;
3710	}
3711
3712	if (vi)
3713	XFree(vi);
3714
3715	/* "Use XFree to free the memory returned by glXChooseFBConfig." */
3716	XFree(paConfigs);
3717	}
3718	else
3719	{
3720	/* glXChooseFBConfig failed. */
3721	rc = VERR_NOT_SUPPORTED;
3722	}
3723
3724	XSetErrorHandler(oldHandler);
3725	return rc;
3726	}
3727
3728	/* Destroy a HW accelerated screen. */
3729	static void vmsvga3dHwScreenDestroy(PVMSVGA3DSTATE pState, VMSVGAHWSCREEN *p)
3730	{
3731	if (p)
3732	{
3733	LogRel4(("VMSVGA: vmsvga3dHwScreenDestroy: p->xwindow %ld, ctx %p\n", p->xwindow, (void *)p->glxctx));
3734	if (p->glxctx)
3735	{
3736	/* GLX context is changed here, so other code has to set the appropriate context again. */
3737	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3738
3739	glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3740
3741	/* Clean up OpenGL. */
3742	if (p->idReadFramebuffer != OPENGL_INVALID_ID)
3743	pState->ext.glDeleteFramebuffers(1, &p->idReadFramebuffer);
3744	if (p->idDrawFramebuffer != OPENGL_INVALID_ID)
3745	pState->ext.glDeleteFramebuffers(1, &p->idDrawFramebuffer);
3746	if (p->idScreenTexture != OPENGL_INVALID_ID)
3747	glDeleteTextures(1, &p->idScreenTexture);
3748
3749	glXMakeCurrent(pState->display, None, NULL);
3750
3751	glXDestroyContext(pState->display, p->glxctx);
3752	}
3753
3754	if (p->xwindow)
3755	XDestroyWindow(pState->display, p->xwindow);
3756
3757	RT_ZERO(*p);
3758	}
3759	}
3760
3761	#define GLCHECK() \
3762	do { \
3763	int glErr = glGetError(); \
3764	if (glErr != GL_NO_ERROR) LogRel4(("VMSVGA: GL error 0x%x @%d\n", glErr, __LINE__)); \
3765	} while(0)
3766
3767	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3768	{
3769	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: screen %u\n", pScreen->idScreen));
3770
3771	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3772	AssertReturn(pState, VERR_NOT_SUPPORTED);
3773
3774	if (!pThis->svga.f3DOverlayEnabled)
3775	return VERR_NOT_SUPPORTED;
3776
3777	Assert(pScreen->pHwScreen == NULL);
3778
3779	VMSVGAHWSCREEN p = (VMSVGAHWSCREEN )RTMemAllocZ(sizeof(VMSVGAHWSCREEN));
3780	AssertPtrReturn(p, VERR_NO_MEMORY);
3781
3782	/* Query the parent window ID from the UI framebuffer.
3783	* If it is there then
3784	* the device will create a texture for the screen content and an overlay window to present the screen content.
3785	* otherwise
3786	* the device will use the guest VRAM system memory for the screen content.
3787	*/
3788	Window parentWindow;
3789	int rc = vmsvga3dDrvQueryWindow(pThisCC, pScreen->idScreen, &parentWindow);
3790	if (RT_SUCCESS(rc))
3791	{
3792	/* Create the hardware accelerated screen. */
3793	rc = vmsvga3dHwScreenCreate(pState, parentWindow, pScreen->cWidth, pScreen->cHeight, p);
3794	if (RT_SUCCESS(rc))
3795	{
3796	/*
3797	* Setup the OpenGL context of the screen. The context will be used to draw on the screen.
3798	*/
3799
3800	/* GLX context is changed here, so other code has to set the appropriate context again. */
3801	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3802
3803	Bool const fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3804	if (fSuccess)
3805	{
3806	/* Set GL state. */
3807	glClearColor(0, 0, 0, 1);
3808	glEnable(GL_TEXTURE_2D);
3809	glDisable(GL_DEPTH_TEST);
3810	glDisable(GL_CULL_FACE);
3811
3812	/* The RGBA texture which hold the screen content. */
3813	glGenTextures(1, &p->idScreenTexture); GLCHECK();
3814	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3815	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); GLCHECK();
3816	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); GLCHECK();
3817	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, pScreen->cWidth, pScreen->cHeight, 0,
3818	GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); GLCHECK();
3819
3820	/* Create read and draw framebuffer objects for this screen. */
3821	pState->ext.glGenFramebuffers(1, &p->idReadFramebuffer); GLCHECK();
3822	pState->ext.glGenFramebuffers(1, &p->idDrawFramebuffer); GLCHECK();
3823
3824	/* Work in screen coordinates. */
3825	glMatrixMode(GL_MODELVIEW);
3826	glLoadIdentity();
3827	glOrtho(0, pScreen->cWidth, 0, pScreen->cHeight, -1, 1);
3828	glMatrixMode(GL_PROJECTION);
3829	glLoadIdentity();
3830
3831	/* Clear the texture. */
3832	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3833	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3834	p->idScreenTexture, 0); GLCHECK();
3835
3836	glClear(GL_COLOR_BUFFER_BIT);
3837
3838	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); GLCHECK();
3839
3840	glXMakeCurrent(pState->display, None, NULL);
3841
3842	XSync(pState->display, False);
3843
3844	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_CREATED, pScreen->idScreen);
3845	}
3846	else
3847	{
3848	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: failed to set current context\n"));
3849	rc = VERR_NOT_SUPPORTED;
3850	}
3851	}
3852	}
3853	else
3854	{
3855	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: no framebuffer\n"));
3856	}
3857
3858	if (RT_SUCCESS(rc))
3859	{
3860	LogRel(("VMSVGA: Using HW accelerated screen %u\n", pScreen->idScreen));
3861	pScreen->pHwScreen = p;
3862	}
3863	else
3864	{
3865	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: %Rrc\n", rc));
3866	vmsvga3dHwScreenDestroy(pState, p);
3867	RTMemFree(p);
3868	}
3869
3870	return rc;
3871	}
3872
3873	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3874	{
3875	LogRel4(("VMSVGA: vmsvga3dBackDestroyScreen: screen %u\n", pScreen->idScreen));
3876
3877	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3878	AssertReturn(pState, VERR_NOT_SUPPORTED);
3879
3880	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3881
3882	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3883	if (p)
3884	{
3885	pScreen->pHwScreen = NULL;
3886
3887	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_DESTROYED, pScreen->idScreen);
3888
3889	vmsvga3dHwScreenDestroy(pState, p);
3890	RTMemFree(p);
3891	}
3892
3893	XSetErrorHandler(oldHandler);
3894
3895	return VINF_SUCCESS;
3896	}
3897
3898	/* Blit a surface to the GLX pixmap. */
3899	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3900	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3901	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3902	{
3903	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3904	AssertReturn(pState, VERR_NOT_SUPPORTED);
3905
3906	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3907	AssertReturn(p, VERR_NOT_SUPPORTED);
3908
3909	PVMSVGA3DSURFACE pSurface;
3910	int rc = vmsvga3dSurfaceFromSid(pState, srcImage.sid, &pSurface);
3911	AssertRCReturn(rc, rc);
3912
3913	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
3914	{
3915	LogFunc(("src sid=%u flags=0x%x format=%d -> create texture\n", srcImage.sid, pSurface->surfaceFlags, pSurface->format));
3916	rc = vmsvga3dBackCreateTexture(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID, pSurface);
3917	AssertRCReturn(rc, rc);
3918	}
3919
3920	AssertReturn(pSurface->enmOGLResType == VMSVGA3D_OGLRESTYPE_TEXTURE, VERR_NOT_SUPPORTED);
3921
3922	PVMSVGA3DMIPMAPLEVEL pMipLevel;
3923	rc = vmsvga3dMipmapLevel(pSurface, srcImage.face, srcImage.mipmap, &pMipLevel);
3924	AssertRCReturn(rc, rc);
3925
3926	/** @todo Implement. */
3927	RT_NOREF(cRects, paRects);
3928
3929	/* GLX context is changed here, so other code has to set appropriate context again. */
3930	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3931
3932	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3933
3934	Bool fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3935	if (fSuccess)
3936	{
3937	/* Activate the read and draw framebuffer objects. */
3938	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, p->idReadFramebuffer); GLCHECK();
3939	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3940
3941	/* Bind the source and destination objects to the right place. */
3942	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3943	pSurface->oglId.texture, 0); GLCHECK();
3944	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3945	p->idScreenTexture, 0); GLCHECK();
3946
3947	pState->ext.glBlitFramebuffer(srcRect.left,
3948	srcRect.top,
3949	srcRect.right,
3950	srcRect.bottom,
3951	destRect.left,
3952	destRect.top,
3953	destRect.right,
3954	destRect.bottom,
3955	GL_COLOR_BUFFER_BIT,
3956	GL_NEAREST); GLCHECK();
3957
3958	/* Reset the frame buffer association */
3959	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0); GLCHECK();
3960
3961	/* Update the overlay window. */
3962	glClear(GL_COLOR_BUFFER_BIT);
3963
3964	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3965
3966	GLint const w = pScreen->cWidth;
3967	GLint const h = pScreen->cHeight;
3968
3969	glBegin(GL_QUADS);
3970	glTexCoord2f(0.0f, 0.0f); glVertex2i(0, h);
3971	glTexCoord2f(0.0f, 1.0f); glVertex2i(0, 0);
3972	glTexCoord2f(1.0f, 1.0f); glVertex2i(w, 0);
3973	glTexCoord2f(1.0f, 0.0f); glVertex2i(w, h);
3974	glEnd(); GLCHECK();
3975
3976	glBindTexture(GL_TEXTURE_2D, 0); GLCHECK();
3977
3978	glXMakeCurrent(pState->display, None, NULL);
3979	}
3980	else
3981	{
3982	LogRel4(("VMSVGA: vmsvga3dBackSurfaceBlitToScreen: screen %u, glXMakeCurrent for pixmap failed\n", pScreen->idScreen));
3983	}
3984
3985	XSetErrorHandler(oldHandler);
3986
3987	return VINF_SUCCESS;
3988	}
3989
3990	#else /* !RT_OS_LINUX */
3991
3992	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3993	{
3994	RT_NOREF(pThis, pThisCC, pScreen);
3995	return VERR_NOT_IMPLEMENTED;
3996	}
3997
3998	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3999	{
4000	RT_NOREF(pThisCC, pScreen);
4001	return VERR_NOT_IMPLEMENTED;
4002	}
4003
4004	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
4005	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
4006	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
4007	{
4008	RT_NOREF(pThisCC, pScreen, destRect, srcImage, srcRect, cRects, paRects);
4009	return VERR_NOT_IMPLEMENTED;
4010	}
4011	#endif
4012
4013	/**
4014	* Create a new 3d context
4015	*
4016	* @returns VBox status code.
4017	* @param pThisCC The VGA/VMSVGA state for ring-3.
4018	* @param cid Context id
4019	*/
4020	static DECLCALLBACK(int) vmsvga3dBackContextDefine(PVGASTATECC pThisCC, uint32_t cid)
4021	{
4022	return vmsvga3dContextDefineOgl(pThisCC, cid, 0/fFlags/);
4023	}
4024
4025	/**
4026	* Destroys a 3d context.
4027	*
4028	* @returns VBox status code.
4029	* @param pThisCC The VGA/VMSVGA state for ring-3.
4030	* @param pContext The context to destroy.
4031	* @param cid Context id
4032	*/
4033	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid)
4034	{
4035	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4036	AssertReturn(pState, VERR_NO_MEMORY);
4037	AssertReturn(pContext, VERR_INVALID_PARAMETER);
4038	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
4039	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
4040
4041	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4042
4043	if (pContext->id == VMSVGA3D_SHARED_CTX_ID)
4044	{
4045	/* Delete resources which use the shared context. */
4046	vmsvga3dOnSharedContextDestroy(pState);
4047	}
4048
4049	/* Destroy all leftover pixel shaders. */
4050	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
4051	{
4052	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
4053	vmsvga3dBackShaderDestroy(pThisCC, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
4054	}
4055	if (pContext->paPixelShader)
4056	RTMemFree(pContext->paPixelShader);
4057
4058	/* Destroy all leftover vertex shaders. */
4059	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
4060	{
4061	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
4062	vmsvga3dBackShaderDestroy(pThisCC, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
4063	}
4064	if (pContext->paVertexShader)
4065	RTMemFree(pContext->paVertexShader);
4066
4067	if (pContext->state.paVertexShaderConst)
4068	RTMemFree(pContext->state.paVertexShaderConst);
4069	if (pContext->state.paPixelShaderConst)
4070	RTMemFree(pContext->state.paPixelShaderConst);
4071
4072	if (pContext->pShaderContext)
4073	{
4074	int rc = ShaderContextDestroy(pContext->pShaderContext);
4075	AssertRC(rc);
4076	}
4077
4078	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
4079	{
4080	/* Unbind the object from the framebuffer target. */
4081	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
4082	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4083	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
4084	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4085
4086	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
4087	{
4088	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
4089	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4090	}
4091	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
4092	{
4093	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
4094	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4095	}
4096	}
4097
4098	vmsvga3dBackOcclusionQueryDelete(pThisCC, pContext);
4099
4100	#ifdef RT_OS_WINDOWS
4101	wglMakeCurrent(pContext->hdc, NULL);
4102	wglDeleteContext(pContext->hglrc);
4103	ReleaseDC(pContext->hwnd, pContext->hdc);
4104
4105	/* Destroy the window we've created. */
4106	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
4107	AssertRC(rc);
4108	#elif defined(RT_OS_DARWIN)
4109	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
4110	#elif defined(RT_OS_LINUX)
4111	glXMakeCurrent(pState->display, None, NULL);
4112	glXDestroyContext(pState->display, pContext->glxContext);
4113	XDestroyWindow(pState->display, pContext->window);
4114	#endif
4115
4116	memset(pContext, 0, sizeof(*pContext));
4117	pContext->id = SVGA3D_INVALID_ID;
4118
4119	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
4120	return VINF_SUCCESS;
4121	}
4122
4123	/**
4124	* Destroy an existing 3d context
4125	*
4126	* @returns VBox status code.
4127	* @param pThisCC The VGA/VMSVGA state for ring-3.
4128	* @param cid Context id
4129	*/
4130	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid)
4131	{
4132	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4133	AssertReturn(pState, VERR_WRONG_ORDER);
4134
4135	/*
4136	* Resolve the context and hand it to the common worker function.
4137	*/
4138	if ( cid < pState->cContexts
4139	&& pState->papContexts[cid]->id == cid)
4140	return vmsvga3dContextDestroyOgl(pThisCC, pState->papContexts[cid], cid);
4141
4142	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
4143	return VINF_SUCCESS;
4144	}
4145
4146	/**
4147	* Worker for vmsvga3dBackChangeMode that resizes a context.
4148	*
4149	* @param pState The VMSVGA3d state.
4150	* @param pContext The context.
4151	*/
4152	static void vmsvga3dChangeModeOneContext(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
4153	{
4154	RT_NOREF(pState, pContext);
4155	/* Do nothing. The window is not used for presenting. */
4156	}
4157
4158	/* Handle resize */
4159	static DECLCALLBACK(int) vmsvga3dBackChangeMode(PVGASTATECC pThisCC)
4160	{
4161	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4162	AssertReturn(pState, VERR_NO_MEMORY);
4163
4164	/* Resize the shared context too. */
4165	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
4166	vmsvga3dChangeModeOneContext(pState, &pState->SharedCtx);
4167
4168	/* Resize all active contexts. */
4169	for (uint32_t i = 0; i < pState->cContexts; i++)
4170	{
4171	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
4172	if (pContext->id != SVGA3D_INVALID_ID)
4173	vmsvga3dChangeModeOneContext(pState, pContext);
4174	}
4175
4176	return VINF_SUCCESS;
4177	}
4178
4179
4180	static DECLCALLBACK(int) vmsvga3dBackSetTransform(PVGASTATECC pThisCC, uint32_t cid, SVGA3dTransformType type, float matrix[16])
4181	{
4182	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4183	AssertReturn(pState, VERR_NO_MEMORY);
4184	bool fModelViewChanged = false;
4185
4186	Log(("vmsvga3dSetTransform cid=%u %s\n", cid, vmsvgaTransformToString(type)));
4187
4188	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
4189
4190	PVMSVGA3DCONTEXT pContext;
4191	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4192	AssertRCReturn(rc, rc);
4193
4194	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4195
4196	/* Save this matrix for vm state save/restore. */
4197	pContext->state.aTransformState[type].fValid = true;
4198	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
4199	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
4200
4201	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)));
4202	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)));
4203	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)));
4204	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)));
4205
4206	switch (type)
4207	{
4208	case SVGA3D_TRANSFORM_VIEW:
4209	/* View * World = Model View */
4210	glMatrixMode(GL_MODELVIEW);
4211	glLoadMatrixf(matrix);
4212	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
4213	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
4214	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4215	fModelViewChanged = true;
4216	break;
4217
4218	case SVGA3D_TRANSFORM_PROJECTION:
4219	{
4220	rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
4221	AssertRCReturn(rc, rc);
4222	break;
4223	}
4224
4225	case SVGA3D_TRANSFORM_TEXTURE0:
4226	glMatrixMode(GL_TEXTURE);
4227	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4228	glLoadMatrixf(matrix);
4229	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4230	break;
4231
4232	case SVGA3D_TRANSFORM_TEXTURE1:
4233	case SVGA3D_TRANSFORM_TEXTURE2:
4234	case SVGA3D_TRANSFORM_TEXTURE3:
4235	case SVGA3D_TRANSFORM_TEXTURE4:
4236	case SVGA3D_TRANSFORM_TEXTURE5:
4237	case SVGA3D_TRANSFORM_TEXTURE6:
4238	case SVGA3D_TRANSFORM_TEXTURE7:
4239	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
4240	return VERR_INVALID_PARAMETER;
4241
4242	case SVGA3D_TRANSFORM_WORLD:
4243	/* View * World = Model View */
4244	glMatrixMode(GL_MODELVIEW);
4245	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
4246	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
4247	else
4248	glLoadIdentity();
4249	glMultMatrixf(matrix);
4250	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4251	fModelViewChanged = true;
4252	break;
4253
4254	case SVGA3D_TRANSFORM_WORLD1:
4255	case SVGA3D_TRANSFORM_WORLD2:
4256	case SVGA3D_TRANSFORM_WORLD3:
4257	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
4258	return VERR_INVALID_PARAMETER;
4259
4260	default:
4261	Log(("vmsvga3dSetTransform: unknown type!!\n"));
4262	return VERR_INVALID_PARAMETER;
4263	}
4264
4265	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
4266	if (fModelViewChanged)
4267	{
4268	/* Reprogram the clip planes. */
4269	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
4270	{
4271	if (pContext->state.aClipPlane[j].fValid == true)
4272	vmsvga3dBackSetClipPlane(pThisCC, cid, j, pContext->state.aClipPlane[j].plane);
4273	}
4274
4275	/* Reprogram the light data. */
4276	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
4277	{
4278	if (pContext->state.aLightData[j].fValidData == true)
4279	vmsvga3dBackSetLightData(pThisCC, cid, j, &pContext->state.aLightData[j].data);
4280	}
4281	}
4282
4283	return VINF_SUCCESS;
4284	}
4285
4286	static DECLCALLBACK(int) vmsvga3dBackSetZRange(PVGASTATECC pThisCC, uint32_t cid, SVGA3dZRange zRange)
4287	{
4288	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4289	AssertReturn(pState, VERR_NO_MEMORY);
4290
4291	Log(("vmsvga3dSetZRange cid=%u min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
4292
4293	PVMSVGA3DCONTEXT pContext;
4294	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4295	AssertRCReturn(rc, rc);
4296
4297	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4298
4299	pContext->state.zRange = zRange;
4300	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
4301
4302	if (zRange.min < -1.0)
4303	zRange.min = -1.0;
4304	if (zRange.max > 1.0)
4305	zRange.max = 1.0;
4306
4307	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
4308	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4309	return VINF_SUCCESS;
4310	}
4311
4312	/**
4313	* Convert SVGA blend op value to its OpenGL equivalent
4314	*/
4315	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
4316	{
4317	switch (blendOp)
4318	{
4319	case SVGA3D_BLENDOP_ZERO:
4320	return GL_ZERO;
4321	case SVGA3D_BLENDOP_ONE:
4322	return GL_ONE;
4323	case SVGA3D_BLENDOP_SRCCOLOR:
4324	return GL_SRC_COLOR;
4325	case SVGA3D_BLENDOP_INVSRCCOLOR:
4326	return GL_ONE_MINUS_SRC_COLOR;
4327	case SVGA3D_BLENDOP_SRCALPHA:
4328	return GL_SRC_ALPHA;
4329	case SVGA3D_BLENDOP_INVSRCALPHA:
4330	return GL_ONE_MINUS_SRC_ALPHA;
4331	case SVGA3D_BLENDOP_DESTALPHA:
4332	return GL_DST_ALPHA;
4333	case SVGA3D_BLENDOP_INVDESTALPHA:
4334	return GL_ONE_MINUS_DST_ALPHA;
4335	case SVGA3D_BLENDOP_DESTCOLOR:
4336	return GL_DST_COLOR;
4337	case SVGA3D_BLENDOP_INVDESTCOLOR:
4338	return GL_ONE_MINUS_DST_COLOR;
4339	case SVGA3D_BLENDOP_SRCALPHASAT:
4340	return GL_SRC_ALPHA_SATURATE;
4341	case SVGA3D_BLENDOP_BLENDFACTOR:
4342	return GL_CONSTANT_COLOR;
4343	case SVGA3D_BLENDOP_INVBLENDFACTOR:
4344	return GL_ONE_MINUS_CONSTANT_COLOR;
4345	default:
4346	AssertFailed();
4347	return GL_ONE;
4348	}
4349	}
4350
4351	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
4352	{
4353	switch (blendEq)
4354	{
4355	case SVGA3D_BLENDEQ_ADD:
4356	return GL_FUNC_ADD;
4357	case SVGA3D_BLENDEQ_SUBTRACT:
4358	return GL_FUNC_SUBTRACT;
4359	case SVGA3D_BLENDEQ_REVSUBTRACT:
4360	return GL_FUNC_REVERSE_SUBTRACT;
4361	case SVGA3D_BLENDEQ_MINIMUM:
4362	return GL_MIN;
4363	case SVGA3D_BLENDEQ_MAXIMUM:
4364	return GL_MAX;
4365	default:
4366	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
4367	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
4368	return GL_FUNC_ADD;
4369	}
4370	}
4371
4372	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
4373	{
4374	switch (cmpFunc)
4375	{
4376	case SVGA3D_CMP_NEVER:
4377	return GL_NEVER;
4378	case SVGA3D_CMP_LESS:
4379	return GL_LESS;
4380	case SVGA3D_CMP_EQUAL:
4381	return GL_EQUAL;
4382	case SVGA3D_CMP_LESSEQUAL:
4383	return GL_LEQUAL;
4384	case SVGA3D_CMP_GREATER:
4385	return GL_GREATER;
4386	case SVGA3D_CMP_NOTEQUAL:
4387	return GL_NOTEQUAL;
4388	case SVGA3D_CMP_GREATEREQUAL:
4389	return GL_GEQUAL;
4390	case SVGA3D_CMP_ALWAYS:
4391	return GL_ALWAYS;
4392	default:
4393	Assert(cmpFunc == SVGA3D_CMP_INVALID);
4394	return GL_LESS;
4395	}
4396	}
4397
4398	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
4399	{
4400	switch (stencilOp)
4401	{
4402	case SVGA3D_STENCILOP_KEEP:
4403	return GL_KEEP;
4404	case SVGA3D_STENCILOP_ZERO:
4405	return GL_ZERO;
4406	case SVGA3D_STENCILOP_REPLACE:
4407	return GL_REPLACE;
4408	case SVGA3D_STENCILOP_INCRSAT:
4409	return GL_INCR_WRAP;
4410	case SVGA3D_STENCILOP_DECRSAT:
4411	return GL_DECR_WRAP;
4412	case SVGA3D_STENCILOP_INVERT:
4413	return GL_INVERT;
4414	case SVGA3D_STENCILOP_INCR:
4415	return GL_INCR;
4416	case SVGA3D_STENCILOP_DECR:
4417	return GL_DECR;
4418	default:
4419	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4420	return GL_KEEP;
4421	}
4422	}
4423
4424	static DECLCALLBACK(int) vmsvga3dBackSetRenderState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4425	{
4426	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4427	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4428	AssertReturn(pState, VERR_NO_MEMORY);
4429
4430	Log(("vmsvga3dSetRenderState cid=%u cRenderStates=%d\n", cid, cRenderStates));
4431
4432	PVMSVGA3DCONTEXT pContext;
4433	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4434	AssertRCReturn(rc, rc);
4435
4436	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4437
4438	for (unsigned i = 0; i < cRenderStates; i++)
4439	{
4440	GLenum enableCap = ~(GLenum)0;
4441	Log(("vmsvga3dSetRenderState: cid=%u state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4442	/* Save the render state for vm state saving. */
4443	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
4444	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4445
4446	switch (pRenderState[i].state)
4447	{
4448	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4449	enableCap = GL_DEPTH_TEST;
4450	val = pRenderState[i].uintValue;
4451	break;
4452
4453	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4454	glDepthMask(!!pRenderState[i].uintValue);
4455	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4456	break;
4457
4458	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4459	enableCap = GL_ALPHA_TEST;
4460	val = pRenderState[i].uintValue;
4461	break;
4462
4463	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4464	enableCap = GL_DITHER;
4465	val = pRenderState[i].uintValue;
4466	break;
4467
4468	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4469	enableCap = GL_FOG;
4470	val = pRenderState[i].uintValue;
4471	break;
4472
4473	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4474	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4475	break;
4476
4477	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4478	enableCap = GL_LIGHTING;
4479	val = pRenderState[i].uintValue;
4480	break;
4481
4482	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4483	/* not applicable */
4484	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4485	break;
4486
4487	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4488	enableCap = GL_POINT_SPRITE_ARB;
4489	val = pRenderState[i].uintValue;
4490	break;
4491
4492	case SVGA3D_RS_POINTSIZE: /* float */
4493	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4494	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4495	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4496	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4497	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4498
4499	glPointSize(pRenderState[i].floatValue);
4500	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4501	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4502	break;
4503
4504	case SVGA3D_RS_POINTSIZEMIN: /* float */
4505	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4506	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4507	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4508	break;
4509
4510	case SVGA3D_RS_POINTSIZEMAX: /* float */
4511	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4512	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4513	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4514	break;
4515
4516	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4517	case SVGA3D_RS_POINTSCALE_A: /* float */
4518	case SVGA3D_RS_POINTSCALE_B: /* float */
4519	case SVGA3D_RS_POINTSCALE_C: /* float */
4520	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4521	break;
4522
4523	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4524	{
4525	GLfloat color[4]; /* red, green, blue, alpha */
4526
4527	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4528
4529	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4530	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4531	break;
4532	}
4533
4534	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4535	{
4536	for (uint32_t j = 0; j < SVGA3D_NUM_CLIPPLANES; j++)
4537	{
4538	if (pRenderState[i].uintValue & RT_BIT(j))
4539	glEnable(GL_CLIP_PLANE0 + j);
4540	else
4541	glDisable(GL_CLIP_PLANE0 + j);
4542	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4543	}
4544	break;
4545	}
4546
4547	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4548	{
4549	GLfloat color[4]; /* red, green, blue, alpha */
4550
4551	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4552
4553	glFogfv(GL_FOG_COLOR, color);
4554	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4555	break;
4556	}
4557
4558	case SVGA3D_RS_FOGSTART: /* float */
4559	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4560	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4561	break;
4562
4563	case SVGA3D_RS_FOGEND: /* float */
4564	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4565	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4566	break;
4567
4568	case SVGA3D_RS_FOGDENSITY: /* float */
4569	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4570	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4571	break;
4572
4573	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4574	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4575	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4576	break;
4577
4578	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4579	{
4580	SVGA3dFogMode mode;
4581	mode.uintValue = pRenderState[i].uintValue;
4582
4583	enableCap = GL_FOG_MODE;
4584	switch (mode.function)
4585	{
4586	case SVGA3D_FOGFUNC_EXP:
4587	val = GL_EXP;
4588	break;
4589	case SVGA3D_FOGFUNC_EXP2:
4590	val = GL_EXP2;
4591	break;
4592	case SVGA3D_FOGFUNC_LINEAR:
4593	val = GL_LINEAR;
4594	break;
4595	default:
4596	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.function), VERR_INTERNAL_ERROR);
4597	break;
4598	}
4599
4600	/** @todo how to switch between vertex and pixel fog modes??? */
4601	Assert(mode.type == SVGA3D_FOGTYPE_PIXEL);
4602	#if 0
4603	/* The fog type determines the render state. */
4604	switch (mode.type)
4605	{
4606	case SVGA3D_FOGTYPE_VERTEX:
4607	renderState = D3DRS_FOGVERTEXMODE;
4608	break;
4609	case SVGA3D_FOGTYPE_PIXEL:
4610	renderState = D3DRS_FOGTABLEMODE;
4611	break;
4612	default:
4613	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.type), VERR_INTERNAL_ERROR);
4614	break;
4615	}
4616	#endif
4617
4618	/* Set the fog base to depth or range. */
4619	switch (mode.base)
4620	{
4621	case SVGA3D_FOGBASE_DEPTHBASED:
4622	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4623	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4624	break;
4625	case SVGA3D_FOGBASE_RANGEBASED:
4626	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4627	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4628	break;
4629	default:
4630	/* ignore */
4631	AssertMsgFailed(("Unexpected fog base %d\n", mode.base));
4632	break;
4633	}
4634	break;
4635	}
4636
4637	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4638	{
4639	SVGA3dFillMode mode;
4640
4641	mode.uintValue = pRenderState[i].uintValue;
4642
4643	switch (mode.mode)
4644	{
4645	case SVGA3D_FILLMODE_POINT:
4646	val = GL_POINT;
4647	break;
4648	case SVGA3D_FILLMODE_LINE:
4649	val = GL_LINE;
4650	break;
4651	case SVGA3D_FILLMODE_FILL:
4652	val = GL_FILL;
4653	break;
4654	default:
4655	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.mode), VERR_INTERNAL_ERROR);
4656	break;
4657	}
4658	/* Only front and back faces. Also recent Mesa guest drivers initialize the 'face' to zero. */
4659	ASSERT_GUEST(mode.face == SVGA3D_FACE_FRONT_BACK \|\| mode.face == SVGA3D_FACE_INVALID);
4660	glPolygonMode(GL_FRONT_AND_BACK, val);
4661	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4662	break;
4663	}
4664
4665	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4666	switch (pRenderState[i].uintValue)
4667	{
4668	case SVGA3D_SHADEMODE_FLAT:
4669	val = GL_FLAT;
4670	break;
4671
4672	case SVGA3D_SHADEMODE_SMOOTH:
4673	val = GL_SMOOTH;
4674	break;
4675
4676	default:
4677	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4678	break;
4679	}
4680
4681	glShadeModel(val);
4682	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4683	break;
4684
4685	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4686	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4687	/** @todo */
4688	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4689	/*
4690	renderState = D3DRS_LINEPATTERN;
4691	val = pRenderState[i].uintValue;
4692	*/
4693	break;
4694
4695	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4696	enableCap = GL_LINE_SMOOTH;
4697	val = pRenderState[i].uintValue;
4698	break;
4699
4700	case SVGA3D_RS_LINEWIDTH: /* float */
4701	glLineWidth(pRenderState[i].floatValue);
4702	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4703	break;
4704
4705	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4706	{
4707	/* Refresh the blending state based on the new enable setting.
4708	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4709	*/
4710	static SVGA3dRenderStateName const saRefreshState[] =
4711	{
4712	SVGA3D_RS_SRCBLEND,
4713	SVGA3D_RS_BLENDEQUATION
4714	};
4715	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4716	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4717	{
4718	renderstate[j].state = saRefreshState[j];
4719	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4720	}
4721
4722	rc = vmsvga3dBackSetRenderState(pThisCC, cid, 2, renderstate);
4723	AssertRCReturn(rc, rc);
4724
4725	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4726	continue; /* Ignore if blend is enabled */
4727	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4728	} RT_FALL_THRU();
4729
4730	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4731	enableCap = GL_BLEND;
4732	val = pRenderState[i].uintValue;
4733	break;
4734
4735	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4736	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4737	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4738	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4739	{
4740	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4741	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4742
4743	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4744	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4745	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4746	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4747	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4748	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4749	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4750	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4751
4752	switch (pRenderState[i].state)
4753	{
4754	case SVGA3D_RS_SRCBLEND:
4755	srcRGB = blendop;
4756	break;
4757	case SVGA3D_RS_DSTBLEND:
4758	dstRGB = blendop;
4759	break;
4760	case SVGA3D_RS_SRCBLENDALPHA:
4761	srcAlpha = blendop;
4762	break;
4763	case SVGA3D_RS_DSTBLENDALPHA:
4764	dstAlpha = blendop;
4765	break;
4766	default:
4767	/* not possible; shut up gcc */
4768	AssertFailed();
4769	break;
4770	}
4771
4772	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4773	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4774	else
4775	glBlendFunc(srcRGB, dstRGB);
4776	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4777	break;
4778	}
4779
4780	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4781	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4782	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4783	{
4784	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4785	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4786	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4787	}
4788	else
4789	{
4790	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4791	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4792	#else
4793	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4794	#endif
4795	}
4796	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4797	break;
4798
4799	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4800	{
4801	GLfloat red, green, blue, alpha;
4802
4803	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4804
4805	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4806	glBlendColor(red, green, blue, alpha);
4807	#else
4808	pState->ext.glBlendColor(red, green, blue, alpha);
4809	#endif
4810	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4811	break;
4812	}
4813
4814	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4815	{
4816	GLenum mode = GL_BACK; /* default for OpenGL */
4817
4818	switch (pRenderState[i].uintValue)
4819	{
4820	case SVGA3D_FACE_NONE:
4821	break;
4822	case SVGA3D_FACE_FRONT:
4823	mode = GL_FRONT;
4824	break;
4825	case SVGA3D_FACE_BACK:
4826	mode = GL_BACK;
4827	break;
4828	case SVGA3D_FACE_FRONT_BACK:
4829	mode = GL_FRONT_AND_BACK;
4830	break;
4831	default:
4832	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4833	break;
4834	}
4835	enableCap = GL_CULL_FACE;
4836	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4837	{
4838	glCullFace(mode);
4839	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4840	val = 1;
4841	}
4842	else
4843	val = 0;
4844	break;
4845	}
4846
4847	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4848	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4849	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4850	break;
4851
4852	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4853	{
4854	GLclampf ref;
4855
4856	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4857	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4858	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4859	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4860	break;
4861	}
4862
4863	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4864	{
4865	GLint func;
4866
4867	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4868	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4869	glAlphaFunc(func, pRenderState[i].floatValue);
4870	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4871	break;
4872	}
4873
4874	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4875	{
4876	/* Refresh the stencil state based on the new enable setting.
4877	* This will take existing states and set them using either glStencil or glStencil*Separate.
4878	*/
4879	static SVGA3dRenderStateName const saRefreshState[] =
4880	{
4881	SVGA3D_RS_STENCILFUNC,
4882	SVGA3D_RS_STENCILFAIL,
4883	SVGA3D_RS_CCWSTENCILFUNC,
4884	SVGA3D_RS_CCWSTENCILFAIL
4885	};
4886	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4887	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4888	{
4889	renderstate[j].state = saRefreshState[j];
4890	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4891	}
4892
4893	rc = vmsvga3dBackSetRenderState(pThisCC, cid, RT_ELEMENTS(renderstate), renderstate);
4894	AssertRCReturn(rc, rc);
4895
4896	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4897	continue; /* Ignore if stencil is enabled */
4898	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4899	} RT_FALL_THRU();
4900
4901	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4902	enableCap = GL_STENCIL_TEST;
4903	val = pRenderState[i].uintValue;
4904	break;
4905
4906	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4907	case SVGA3D_RS_STENCILREF: /* uint32_t */
4908	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4909	{
4910	GLint func, ref;
4911	GLuint mask;
4912
4913	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4914	glGetIntegerv(GL_STENCIL_FUNC, &func);
4915	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4916	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4917	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4918	glGetIntegerv(GL_STENCIL_REF, &ref);
4919	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4920
4921	/* Update the changed value. */
4922	switch (pRenderState[i].state)
4923	{
4924	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4925	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4926	break;
4927
4928	case SVGA3D_RS_STENCILREF: /* uint32_t */
4929	ref = pRenderState[i].uintValue;
4930	break;
4931
4932	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4933	mask = pRenderState[i].uintValue;
4934	break;
4935
4936	default:
4937	/* not possible; shut up gcc */
4938	AssertFailed();
4939	break;
4940	}
4941
4942	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4943	{
4944	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4945	}
4946	else
4947	{
4948	glStencilFunc(func, ref, mask);
4949	}
4950	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4951	break;
4952	}
4953
4954	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4955	glStencilMask(pRenderState[i].uintValue);
4956	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4957	break;
4958
4959	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4960	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4961	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4962	{
4963	GLint sfail, dpfail, dppass;
4964	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4965
4966	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
4967	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4968	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
4969	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4970	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
4971	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4972
4973	switch (pRenderState[i].state)
4974	{
4975	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4976	sfail = stencilop;
4977	break;
4978	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4979	dpfail = stencilop;
4980	break;
4981	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4982	dppass = stencilop;
4983	break;
4984	default:
4985	/* not possible; shut up gcc */
4986	AssertFailed();
4987	break;
4988	}
4989	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4990	{
4991	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
4992	}
4993	else
4994	{
4995	glStencilOp(sfail, dpfail, dppass);
4996	}
4997	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4998	break;
4999	}
5000
5001	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
5002	{
5003	GLint ref;
5004	GLuint mask;
5005	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
5006
5007	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
5008	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
5009	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5010	glGetIntegerv(GL_STENCIL_REF, &ref);
5011	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5012
5013	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
5014	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5015	break;
5016	}
5017
5018	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5019	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5020	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5021	{
5022	GLint sfail, dpfail, dppass;
5023	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
5024
5025	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
5026	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5027	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
5028	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5029	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
5030	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5031
5032	switch (pRenderState[i].state)
5033	{
5034	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5035	sfail = stencilop;
5036	break;
5037	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5038	dpfail = stencilop;
5039	break;
5040	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5041	dppass = stencilop;
5042	break;
5043	default:
5044	/* not possible; shut up gcc */
5045	AssertFailed();
5046	break;
5047	}
5048	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
5049	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5050	break;
5051	}
5052
5053	case SVGA3D_RS_ZBIAS: /* float */
5054	/** @todo unknown meaning; depth bias is not identical
5055	renderState = D3DRS_DEPTHBIAS;
5056	val = pRenderState[i].uintValue;
5057	*/
5058	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
5059	break;
5060
5061	case SVGA3D_RS_DEPTHBIAS: /* float */
5062	{
5063	GLfloat factor;
5064
5065	/** @todo not sure if the d3d & ogl definitions are identical. */
5066
5067	/* Do not change the factor part. */
5068	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
5069	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5070
5071	glPolygonOffset(factor, pRenderState[i].floatValue);
5072	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5073	break;
5074	}
5075
5076	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
5077	{
5078	GLfloat units;
5079
5080	/** @todo not sure if the d3d & ogl definitions are identical. */
5081
5082	/* Do not change the factor part. */
5083	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
5084	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5085
5086	glPolygonOffset(pRenderState[i].floatValue, units);
5087	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5088	break;
5089	}
5090
5091	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
5092	{
5093	GLboolean red, green, blue, alpha;
5094	SVGA3dColorMask mask;
5095
5096	mask.uintValue = pRenderState[i].uintValue;
5097
5098	red = mask.red;
5099	green = mask.green;
5100	blue = mask.blue;
5101	alpha = mask.alpha;
5102
5103	glColorMask(red, green, blue, alpha);
5104	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5105	break;
5106	}
5107
5108	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5109	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5110	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5111	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
5112	break;
5113
5114	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
5115	enableCap = GL_SCISSOR_TEST;
5116	val = pRenderState[i].uintValue;
5117	break;
5118
5119	#if 0
5120	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5121	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
5122	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
5123	val = pRenderState[i].uintValue;
5124	break;
5125
5126	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
5127	renderState = D3DRS_SPECULARMATERIALSOURCE;
5128	val = pRenderState[i].uintValue;
5129	break;
5130
5131	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
5132	renderState = D3DRS_AMBIENTMATERIALSOURCE;
5133	val = pRenderState[i].uintValue;
5134	break;
5135
5136	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5137	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
5138	val = pRenderState[i].uintValue;
5139	break;
5140	#endif
5141
5142	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
5143	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
5144	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
5145	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
5146	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
5147	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
5148	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
5149	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
5150	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
5151	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
5152	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
5153	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
5154	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
5155	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
5156	break;
5157
5158	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
5159	case SVGA3D_RS_TWEENFACTOR: /* float */
5160	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
5161	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
5162	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
5163	break;
5164
5165	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
5166	enableCap = GL_MULTISAMPLE;
5167	val = pRenderState[i].uintValue;
5168	break;
5169
5170	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
5171	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
5172	break;
5173
5174	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
5175	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
5176	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
5177	/*
5178	renderState = D3DRS_COORDINATETYPE;
5179	val = pRenderState[i].uintValue;
5180	*/
5181	break;
5182
5183	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
5184	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
5185	/* Invert the selected mode because of y-inversion (?) */
5186	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
5187	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5188	break;
5189
5190	case SVGA3D_RS_OUTPUTGAMMA: /* float */
5191	//AssertFailed();
5192	/*
5193	D3DRS_SRGBWRITEENABLE ??
5194	renderState = D3DRS_OUTPUTGAMMA;
5195	val = pRenderState[i].uintValue;
5196	*/
5197	break;
5198
5199	#if 0
5200
5201	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
5202	//AssertFailed();
5203	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
5204	val = pRenderState[i].uintValue;
5205	break;
5206
5207	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
5208	renderState = D3DRS_TEXTUREFACTOR;
5209	val = pRenderState[i].uintValue;
5210	break;
5211
5212	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
5213	renderState = D3DRS_LOCALVIEWER;
5214	val = pRenderState[i].uintValue;
5215	break;
5216
5217	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
5218	AssertFailed();
5219	/*
5220	renderState = D3DRS_ZVISIBLE;
5221	val = pRenderState[i].uintValue;
5222	*/
5223	break;
5224
5225	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
5226	renderState = D3DRS_CLIPPING;
5227	val = pRenderState[i].uintValue;
5228	break;
5229
5230	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
5231	glTexParameter GL_TEXTURE_WRAP_S
5232	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
5233	renderState = D3DRS_WRAP0;
5234	val = pRenderState[i].uintValue;
5235	break;
5236
5237	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
5238	glTexParameter GL_TEXTURE_WRAP_T
5239	renderState = D3DRS_WRAP1;
5240	val = pRenderState[i].uintValue;
5241	break;
5242
5243	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
5244	glTexParameter GL_TEXTURE_WRAP_R
5245	renderState = D3DRS_WRAP2;
5246	val = pRenderState[i].uintValue;
5247	break;
5248
5249
5250	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
5251	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
5252	val = pRenderState[i].uintValue;
5253	break;
5254
5255
5256	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
5257	renderState = D3DRS_BLENDOPALPHA;
5258	val = pRenderState[i].uintValue;
5259	break;
5260
5261	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
5262	AssertFailed();
5263	/*
5264	renderState = D3DRS_TRANSPARENCYANTIALIAS;
5265	val = pRenderState[i].uintValue;
5266	*/
5267	break;
5268
5269	#endif
5270	default:
5271	AssertFailed();
5272	break;
5273	}
5274
5275	if (enableCap != ~(GLenum)0)
5276	{
5277	if (val)
5278	glEnable(enableCap);
5279	else
5280	glDisable(enableCap);
5281	}
5282	}
5283
5284	return VINF_SUCCESS;
5285	}
5286
5287	static DECLCALLBACK(int) vmsvga3dBackSetRenderTarget(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
5288	{
5289	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5290
5291	AssertReturn(pState, VERR_NO_MEMORY);
5292	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
5293
5294	LogFunc(("cid=%u type=%x sid=%u\n", cid, type, target.sid));
5295
5296	PVMSVGA3DCONTEXT pContext;
5297	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5298	AssertRCReturn(rc, rc);
5299
5300	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5301
5302	/* Save for vm state save/restore. */
5303	pContext->state.aRenderTargets[type] = target.sid;
5304
5305	if (target.sid == SVGA3D_INVALID_ID)
5306	{
5307	/* Disable render target. */
5308	switch (type)
5309	{
5310	case SVGA3D_RT_DEPTH:
5311	case SVGA3D_RT_STENCIL:
5312	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
5313	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5314	break;
5315
5316	case SVGA3D_RT_COLOR0:
5317	case SVGA3D_RT_COLOR1:
5318	case SVGA3D_RT_COLOR2:
5319	case SVGA3D_RT_COLOR3:
5320	case SVGA3D_RT_COLOR4:
5321	case SVGA3D_RT_COLOR5:
5322	case SVGA3D_RT_COLOR6:
5323	case SVGA3D_RT_COLOR7:
5324	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
5325	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5326	break;
5327
5328	default:
5329	AssertFailedReturn(VERR_INVALID_PARAMETER);
5330	}
5331	return VINF_SUCCESS;
5332	}
5333
5334	PVMSVGA3DSURFACE pRenderTarget;
5335	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
5336	AssertRCReturn(rc, rc);
5337
5338	switch (type)
5339	{
5340	case SVGA3D_RT_DEPTH:
5341	case SVGA3D_RT_STENCIL:
5342	#if 1
5343	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5344	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5345	{
5346	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
5347	target.sid, pRenderTarget->surfaceFlags, pRenderTarget->format));
5348	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5349	AssertRCReturn(rc, rc);
5350	}
5351
5352	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5353	Assert(!pRenderTarget->fDirty);
5354
5355	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5356
5357	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
5358	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5359	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
5360	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5361	#else
5362	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
5363	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5364	{
5365	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->surfaceFlags, pRenderTarget->internalFormatGL));
5366	pContext = &pState->SharedCtx;
5367	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5368
5369	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
5370	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5371	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
5372
5373	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5374	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5375
5376	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
5377	pRenderTarget->internalFormatGL,
5378	pRenderTarget->paMipmapLevels[0].mipmapSize.width,
5379	pRenderTarget->paMipmapLevels[0].mipmapSize.height);
5380	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5381
5382	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
5383	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5384
5385	pContext = pState->papContexts[cid];
5386	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5387	}
5388
5389	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5390	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5391	Assert(!pRenderTarget->fDirty);
5392	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5393
5394	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5395
5396	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
5397	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5398	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5399	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5400	#endif
5401	break;
5402
5403	case SVGA3D_RT_COLOR0:
5404	case SVGA3D_RT_COLOR1:
5405	case SVGA3D_RT_COLOR2:
5406	case SVGA3D_RT_COLOR3:
5407	case SVGA3D_RT_COLOR4:
5408	case SVGA3D_RT_COLOR5:
5409	case SVGA3D_RT_COLOR6:
5410	case SVGA3D_RT_COLOR7:
5411	{
5412	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5413	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5414	{
5415	Log(("vmsvga3dSetRenderTarget: create texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n", target.sid, pRenderTarget->surfaceFlags, pRenderTarget->format));
5416	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5417	AssertRCReturn(rc, rc);
5418	}
5419
5420	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5421	Assert(!pRenderTarget->fDirty);
5422
5423	pRenderTarget->surfaceFlags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5424
5425	GLenum textarget;
5426	if (pRenderTarget->surfaceFlags & SVGA3D_SURFACE_CUBEMAP)
5427	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5428	else
5429	textarget = GL_TEXTURE_2D;
5430	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5431	textarget, pRenderTarget->oglId.texture, target.mipmap);
5432	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5433
5434	#ifdef DEBUG
5435	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5436	if (status != GL_FRAMEBUFFER_COMPLETE)
5437	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5438	#endif
5439	/** @todo use glDrawBuffers too? */
5440	break;
5441	}
5442
5443	default:
5444	AssertFailedReturn(VERR_INVALID_PARAMETER);
5445	}
5446
5447	return VINF_SUCCESS;
5448	}
5449
5450	#if 0
5451	/**
5452	* Convert SVGA texture combiner value to its D3D equivalent
5453	*/
5454	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5455	{
5456	switch (value)
5457	{
5458	case SVGA3D_TC_DISABLE:
5459	return D3DTOP_DISABLE;
5460	case SVGA3D_TC_SELECTARG1:
5461	return D3DTOP_SELECTARG1;
5462	case SVGA3D_TC_SELECTARG2:
5463	return D3DTOP_SELECTARG2;
5464	case SVGA3D_TC_MODULATE:
5465	return D3DTOP_MODULATE;
5466	case SVGA3D_TC_ADD:
5467	return D3DTOP_ADD;
5468	case SVGA3D_TC_ADDSIGNED:
5469	return D3DTOP_ADDSIGNED;
5470	case SVGA3D_TC_SUBTRACT:
5471	return D3DTOP_SUBTRACT;
5472	case SVGA3D_TC_BLENDTEXTUREALPHA:
5473	return D3DTOP_BLENDTEXTUREALPHA;
5474	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5475	return D3DTOP_BLENDDIFFUSEALPHA;
5476	case SVGA3D_TC_BLENDCURRENTALPHA:
5477	return D3DTOP_BLENDCURRENTALPHA;
5478	case SVGA3D_TC_BLENDFACTORALPHA:
5479	return D3DTOP_BLENDFACTORALPHA;
5480	case SVGA3D_TC_MODULATE2X:
5481	return D3DTOP_MODULATE2X;
5482	case SVGA3D_TC_MODULATE4X:
5483	return D3DTOP_MODULATE4X;
5484	case SVGA3D_TC_DSDT:
5485	AssertFailed(); /** @todo ??? */
5486	return D3DTOP_DISABLE;
5487	case SVGA3D_TC_DOTPRODUCT3:
5488	return D3DTOP_DOTPRODUCT3;
5489	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5490	return D3DTOP_BLENDTEXTUREALPHAPM;
5491	case SVGA3D_TC_ADDSIGNED2X:
5492	return D3DTOP_ADDSIGNED2X;
5493	case SVGA3D_TC_ADDSMOOTH:
5494	return D3DTOP_ADDSMOOTH;
5495	case SVGA3D_TC_PREMODULATE:
5496	return D3DTOP_PREMODULATE;
5497	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5498	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5499	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5500	return D3DTOP_MODULATECOLOR_ADDALPHA;
5501	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5502	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5503	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5504	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5505	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5506	return D3DTOP_BUMPENVMAPLUMINANCE;
5507	case SVGA3D_TC_MULTIPLYADD:
5508	return D3DTOP_MULTIPLYADD;
5509	case SVGA3D_TC_LERP:
5510	return D3DTOP_LERP;
5511	default:
5512	AssertFailed();
5513	return D3DTOP_DISABLE;
5514	}
5515	}
5516
5517	/**
5518	* Convert SVGA texture arg data value to its D3D equivalent
5519	*/
5520	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5521	{
5522	switch (value)
5523	{
5524	case SVGA3D_TA_CONSTANT:
5525	return D3DTA_CONSTANT;
5526	case SVGA3D_TA_PREVIOUS:
5527	return D3DTA_CURRENT; /* current = previous */
5528	case SVGA3D_TA_DIFFUSE:
5529	return D3DTA_DIFFUSE;
5530	case SVGA3D_TA_TEXTURE:
5531	return D3DTA_TEXTURE;
5532	case SVGA3D_TA_SPECULAR:
5533	return D3DTA_SPECULAR;
5534	default:
5535	AssertFailed();
5536	return 0;
5537	}
5538	}
5539
5540	/**
5541	* Convert SVGA texture transform flag value to its D3D equivalent
5542	*/
5543	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5544	{
5545	switch (value)
5546	{
5547	case SVGA3D_TEX_TRANSFORM_OFF:
5548	return D3DTTFF_DISABLE;
5549	case SVGA3D_TEX_TRANSFORM_S:
5550	return D3DTTFF_COUNT1; /** @todo correct? */
5551	case SVGA3D_TEX_TRANSFORM_T:
5552	return D3DTTFF_COUNT2; /** @todo correct? */
5553	case SVGA3D_TEX_TRANSFORM_R:
5554	return D3DTTFF_COUNT3; /** @todo correct? */
5555	case SVGA3D_TEX_TRANSFORM_Q:
5556	return D3DTTFF_COUNT4; /** @todo correct? */
5557	case SVGA3D_TEX_PROJECTED:
5558	return D3DTTFF_PROJECTED;
5559	default:
5560	AssertFailed();
5561	return 0;
5562	}
5563	}
5564	#endif
5565
5566	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5567	{
5568	switch (value)
5569	{
5570	case SVGA3D_TEX_ADDRESS_WRAP:
5571	return GL_REPEAT;
5572	case SVGA3D_TEX_ADDRESS_MIRROR:
5573	return GL_MIRRORED_REPEAT;
5574	case SVGA3D_TEX_ADDRESS_CLAMP:
5575	return GL_CLAMP_TO_EDGE;
5576	case SVGA3D_TEX_ADDRESS_BORDER:
5577	return GL_CLAMP_TO_BORDER;
5578	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5579	AssertFailed();
5580	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5581
5582	case SVGA3D_TEX_ADDRESS_EDGE:
5583	case SVGA3D_TEX_ADDRESS_INVALID:
5584	default:
5585	AssertFailed();
5586	return GL_REPEAT; /* default */
5587	}
5588	}
5589
5590	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5591	{
5592	switch (value)
5593	{
5594	case SVGA3D_TEX_FILTER_NONE:
5595	case SVGA3D_TEX_FILTER_LINEAR:
5596	case SVGA3D_TEX_FILTER_ANISOTROPIC: /* Anisotropic filtering is controlled by SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL */
5597	return GL_LINEAR;
5598	case SVGA3D_TEX_FILTER_NEAREST:
5599	return GL_NEAREST;
5600	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5601	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5602	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5603	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5604	default:
5605	AssertFailed();
5606	return GL_LINEAR; /* default */
5607	}
5608	}
5609
5610	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5611	{
5612	/* flip the red and blue bytes */
5613	uint8_t blue = value & 0xff;
5614	uint8_t red = (value >> 16) & 0xff;
5615	return (value & 0xff00ff00) \| red \| (blue << 16);
5616	}
5617
5618	static DECLCALLBACK(int) vmsvga3dBackSetTextureState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5619	{
5620	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5621	GLenum currentStage = ~(GLenum)0;
5622	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5623	AssertReturn(pState, VERR_NO_MEMORY);
5624
5625	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5626
5627	PVMSVGA3DCONTEXT pContext;
5628	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5629	AssertRCReturn(rc, rc);
5630
5631	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5632
5633	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5634	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5635
5636	for (uint32_t i = 0; i < cTextureStates; ++i)
5637	{
5638	GLenum textureType = ~(GLenum)0;
5639	#if 0
5640	GLenum samplerType = ~(GLenum)0;
5641	#endif
5642
5643	LogFunc(("cid=%u stage=%d type=%s (%x) val=%x\n",
5644	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5645
5646	/* Record the texture state for vm state saving. */
5647	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5648	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5649	{
5650	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5651	}
5652
5653	/* Activate the right texture unit for subsequent texture state changes. */
5654	if (pTextureState[i].stage != currentStage \|\| i == 0)
5655	{
5656	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5657	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5658	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5659	{
5660	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5661	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5662	currentStage = pTextureState[i].stage;
5663	}
5664	else
5665	{
5666	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5667	continue;
5668	}
5669
5670	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5671	{
5672	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5673	AssertRCReturn(rc, rc);
5674	}
5675	else
5676	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5677	}
5678
5679	switch (pTextureState[i].name)
5680	{
5681	case SVGA3D_TS_BUMPENVMAT00: /* float */
5682	case SVGA3D_TS_BUMPENVMAT01: /* float */
5683	case SVGA3D_TS_BUMPENVMAT10: /* float */
5684	case SVGA3D_TS_BUMPENVMAT11: /* float */
5685	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5686	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5687	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5688	break;
5689
5690	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5691	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5692	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5693	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5694	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5695	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5696	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5697	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5698	/** @todo not used by MesaGL */
5699	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5700	break;
5701	#if 0
5702
5703	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5704	textureType = D3DTSS_TEXCOORDINDEX;
5705	val = pTextureState[i].value;
5706	break;
5707
5708	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5709	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5710	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5711	break;
5712	#endif
5713
5714	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5715	{
5716	uint32_t const sid = pTextureState[i].value;
5717
5718	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u replacing sid=%u\n",
5719	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5720
5721	/* Only if texture actually changed. */ /// @todo needs testing.
5722	if (pContext->aSidActiveTextures[currentStage] != sid)
5723	{
5724	if (pCurrentTextureSurface)
5725	{
5726	/* Unselect the currently associated texture. */
5727	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5728	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5729
5730	if (currentStage < 8)
5731	{
5732	/* Necessary for the fixed pipeline. */
5733	glDisable(pCurrentTextureSurface->targetGL);
5734	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5735	}
5736
5737	pCurrentTextureSurface = NULL;
5738	}
5739
5740	if (sid == SVGA3D_INVALID_ID)
5741	{
5742	Assert(pCurrentTextureSurface == NULL);
5743	}
5744	else
5745	{
5746	PVMSVGA3DSURFACE pSurface;
5747	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5748	AssertRCReturn(rc, rc);
5749
5750	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u (%d,%d) replacing sid=%u\n",
5751	currentStage, sid, pSurface->paMipmapLevels[0].mipmapSize.width,
5752	pSurface->paMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5753
5754	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5755	{
5756	Log(("CreateTexture (%d,%d) levels=%d\n",
5757	pSurface->paMipmapLevels[0].mipmapSize.width, pSurface->paMipmapLevels[0].mipmapSize.height, pSurface->cLevels));
5758	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
5759	AssertRCReturn(rc, rc);
5760	}
5761
5762	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5763	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5764
5765	if (currentStage < 8)
5766	{
5767	/* Necessary for the fixed pipeline. */
5768	glEnable(pSurface->targetGL);
5769	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5770	}
5771
5772	/* Remember the currently active texture. */
5773	pCurrentTextureSurface = pSurface;
5774
5775	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5776	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5777	{
5778	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5779	{
5780	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5781
5782	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5783	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5784	vmsvga3dBackSetTextureState(pThisCC, pContext->id, 1, pTextureStateIter);
5785	}
5786	}
5787	}
5788
5789	pContext->aSidActiveTextures[currentStage] = sid;
5790	}
5791
5792	/* Finished; continue with the next one. */
5793	continue;
5794	}
5795
5796	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5797	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5798	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5799	break;
5800
5801	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5802	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5803	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5804	break;
5805
5806	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5807	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5808	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5809	break;
5810
5811	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5812	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5813	{
5814	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5815	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5816
5817	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5818	textureType = GL_TEXTURE_MIN_FILTER;
5819	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5820	{
5821	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5822	{
5823	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5824	val = GL_NEAREST_MIPMAP_LINEAR;
5825	else
5826	val = GL_NEAREST_MIPMAP_NEAREST;
5827	}
5828	else
5829	{
5830	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5831	val = GL_LINEAR_MIPMAP_LINEAR;
5832	else
5833	val = GL_LINEAR_MIPMAP_NEAREST;
5834	}
5835	}
5836	else
5837	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5838	break;
5839	}
5840
5841	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5842	textureType = GL_TEXTURE_MAG_FILTER;
5843	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5844	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5845	break;
5846
5847	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5848	{
5849	GLfloat color[4]; /* red, green, blue, alpha */
5850	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5851
5852	GLenum targetGL;
5853	if (pCurrentTextureSurface)
5854	targetGL = pCurrentTextureSurface->targetGL;
5855	else
5856	{
5857	/* No texture bound, assume 2D. */
5858	targetGL = GL_TEXTURE_2D;
5859	}
5860
5861	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5862	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5863	break;
5864	}
5865
5866	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5867	{
5868	GLenum targetGL;
5869	if (pCurrentTextureSurface)
5870	targetGL = pCurrentTextureSurface->targetGL;
5871	else
5872	{
5873	/* No texture bound, assume 2D. */
5874	targetGL = GL_TEXTURE_2D;
5875	}
5876
5877	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5878	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5879	break;
5880	}
5881
5882	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5883	textureType = GL_TEXTURE_BASE_LEVEL;
5884	val = pTextureState[i].value;
5885	break;
5886
5887	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5888	if (pState->caps.fTextureFilterAnisotropicSupported)
5889	{
5890	textureType = GL_TEXTURE_MAX_ANISOTROPY_EXT;
5891	val = RT_MIN((GLint)pTextureState[i].value, pState->caps.maxTextureAnisotropy);
5892	} /* otherwise ignore. */
5893	break;
5894
5895	#if 0
5896	case SVGA3D_TS_GAMMA: /* float */
5897	samplerType = D3DSAMP_SRGBTEXTURE;
5898	/* Boolean in D3D */
5899	if (pTextureState[i].floatValue == 1.0f)
5900	val = FALSE;
5901	else
5902	val = TRUE;
5903	break;
5904	#endif
5905	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5906	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5907	AssertFailed();
5908	break;
5909
5910	default:
5911	//AssertFailed();
5912	break;
5913	}
5914
5915	if (textureType != ~(GLenum)0)
5916	{
5917	GLenum targetGL;
5918	if (pCurrentTextureSurface)
5919	targetGL = pCurrentTextureSurface->targetGL;
5920	else
5921	{
5922	/* No texture bound, assume 2D. */
5923	targetGL = GL_TEXTURE_2D;
5924	}
5925
5926	switch (pTextureState[i].name)
5927	{
5928	case SVGA3D_TS_MINFILTER:
5929	case SVGA3D_TS_MAGFILTER:
5930	{
5931	if (pState->caps.fTextureFilterAnisotropicSupported)
5932	{
5933	uint32_t const anisotropyLevel = (SVGA3dTextureFilter)pTextureState[i].value == SVGA3D_TEX_FILTER_ANISOTROPIC
5934	? RT_MAX(1, pContext->state.aTextureStates[currentStage][SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL].value)
5935	: 1;
5936	glTexParameteri(targetGL, GL_TEXTURE_MAX_ANISOTROPY_EXT, RT_MIN((GLint)anisotropyLevel, pState->caps.maxTextureAnisotropy));
5937	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5938	}
5939	} break;
5940
5941	default: break;
5942	}
5943
5944	glTexParameteri(targetGL, textureType, val);
5945	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5946	}
5947	}
5948
5949	return VINF_SUCCESS;
5950	}
5951
5952	static DECLCALLBACK(int) vmsvga3dBackSetMaterial(PVGASTATECC pThisCC, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5953	{
5954	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5955	AssertReturn(pState, VERR_NO_MEMORY);
5956
5957	LogFunc(("cid=%u face %d\n", cid, face));
5958
5959	PVMSVGA3DCONTEXT pContext;
5960	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5961	AssertRCReturn(rc, rc);
5962
5963	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5964
5965	GLenum oglFace;
5966	switch (face)
5967	{
5968	case SVGA3D_FACE_NONE:
5969	case SVGA3D_FACE_FRONT:
5970	oglFace = GL_FRONT;
5971	break;
5972
5973	case SVGA3D_FACE_BACK:
5974	oglFace = GL_BACK;
5975	break;
5976
5977	case SVGA3D_FACE_FRONT_BACK:
5978	oglFace = GL_FRONT_AND_BACK;
5979	break;
5980
5981	default:
5982	AssertFailedReturn(VERR_INVALID_PARAMETER);
5983	}
5984
5985	/* Save for vm state save/restore. */
5986	pContext->state.aMaterial[face].fValid = true;
5987	pContext->state.aMaterial[face].material = *pMaterial;
5988	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
5989
5990	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
5991	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
5992	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
5993	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
5994	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
5995	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5996
5997	return VINF_SUCCESS;
5998	}
5999
6000	/** @todo Move into separate library as we are using logic from Wine here. */
6001	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
6002	{
6003	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6004	AssertReturn(pState, VERR_NO_MEMORY);
6005
6006	LogFunc(("vmsvga3dSetLightData cid=%u index=%d type=%d\n", cid, index, pData->type));
6007	ASSERT_GUEST_RETURN(index < SVGA3D_MAX_LIGHTS, VERR_INVALID_PARAMETER);
6008
6009	PVMSVGA3DCONTEXT pContext;
6010	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6011	AssertRCReturn(rc, rc);
6012
6013	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6014
6015	/* Store for vm state save/restore */
6016	pContext->state.aLightData[index].fValidData = true;
6017	pContext->state.aLightData[index].data = *pData;
6018
6019	if ( pData->attenuation0 < 0.0f
6020	\|\| pData->attenuation1 < 0.0f
6021	\|\| pData->attenuation2 < 0.0f)
6022	{
6023	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
6024	return VINF_SUCCESS; /* ignore; could crash the GL driver */
6025	}
6026
6027	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
6028	glMatrixMode(GL_MODELVIEW);
6029	glPushMatrix();
6030	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6031
6032	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
6033	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
6034	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
6035
6036	float QuadAttenuation;
6037	if (pData->range * pData->range >= FLT_MIN)
6038	QuadAttenuation = 1.4f / (pData->range * pData->range);
6039	else
6040	QuadAttenuation = 0.0f;
6041
6042	switch (pData->type)
6043	{
6044	case SVGA3D_LIGHTTYPE_POINT:
6045	{
6046	GLfloat position[4];
6047
6048	position[0] = pData->position[0];
6049	position[1] = pData->position[1];
6050	position[2] = pData->position[2];
6051	position[3] = 1.0f;
6052
6053	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6054	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6055
6056	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6057	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6058
6059	/* Attenuation - Are these right? guessing... */
6060	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6061	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6062
6063	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6064	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6065
6066	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6067	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6068
6069	/** @todo range */
6070	break;
6071	}
6072
6073	case SVGA3D_LIGHTTYPE_SPOT1:
6074	{
6075	GLfloat exponent;
6076	GLfloat position[4];
6077	const GLfloat pi = 4.0f * atanf(1.0f);
6078
6079	position[0] = pData->position[0];
6080	position[1] = pData->position[1];
6081	position[2] = pData->position[2];
6082	position[3] = 1.0f;
6083
6084	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6085	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6086
6087	position[0] = pData->direction[0];
6088	position[1] = pData->direction[1];
6089	position[2] = pData->direction[2];
6090	position[3] = 1.0f;
6091
6092	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
6093	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6094
6095	/*
6096	* opengl-ish and d3d-ish spot lights use too different models for the
6097	* light "intensity" as a function of the angle towards the main light direction,
6098	* so we only can approximate very roughly.
6099	* however spot lights are rather rarely used in games (if ever used at all).
6100	* furthermore if still used, probably nobody pays attention to such details.
6101	*/
6102	if (pData->falloff == 0)
6103	{
6104	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
6105	* falloff resp. exponent parameter as an exponent, so the spot light lighting
6106	* will always be 1.0 for both of them, and we don't have to care for the
6107	* rest of the rather complex calculation
6108	*/
6109	exponent = 0.0f;
6110	}
6111	else
6112	{
6113	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
6114	if (rho < 0.0001f)
6115	rho = 0.0001f;
6116	exponent = -0.3f/log(cos(rho/2));
6117	}
6118	if (exponent > 128.0f)
6119	exponent = 128.0f;
6120
6121	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
6122	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6123
6124	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
6125	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6126
6127	/* Attenuation - Are these right? guessing... */
6128	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6129	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6130
6131	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6132	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6133
6134	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6135	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6136
6137	/** @todo range */
6138	break;
6139	}
6140
6141	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
6142	{
6143	GLfloat position[4];
6144
6145	position[0] = -pData->direction[0];
6146	position[1] = -pData->direction[1];
6147	position[2] = -pData->direction[2];
6148	position[3] = 0.0f;
6149
6150	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
6151	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6152
6153	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6154	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6155
6156	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
6157	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6158	break;
6159	}
6160
6161	case SVGA3D_LIGHTTYPE_SPOT2:
6162	default:
6163	Log(("Unsupported light type!!\n"));
6164	rc = VERR_INVALID_PARAMETER;
6165	break;
6166	}
6167
6168	/* Restore the modelview matrix */
6169	glPopMatrix();
6170
6171	return rc;
6172	}
6173
6174	static DECLCALLBACK(int) vmsvga3dBackSetLightEnabled(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, uint32_t enabled)
6175	{
6176	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6177	AssertReturn(pState, VERR_NO_MEMORY);
6178
6179	LogFunc(("cid=%u %d -> %d\n", cid, index, enabled));
6180
6181	PVMSVGA3DCONTEXT pContext;
6182	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6183	AssertRCReturn(rc, rc);
6184
6185	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6186
6187	/* Store for vm state save/restore */
6188	if (index < SVGA3D_MAX_LIGHTS)
6189	pContext->state.aLightData[index].fEnabled = !!enabled;
6190	else
6191	AssertFailed();
6192
6193	if (enabled)
6194	{
6195	if (index < SVGA3D_MAX_LIGHTS)
6196	{
6197	/* Load the default settings if none have been set yet. */
6198	if (!pContext->state.aLightData[index].fValidData)
6199	vmsvga3dBackSetLightData(pThisCC, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
6200	}
6201	glEnable(GL_LIGHT0 + index);
6202	}
6203	else
6204	glDisable(GL_LIGHT0 + index);
6205
6206	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6207	return VINF_SUCCESS;
6208	}
6209
6210	static DECLCALLBACK(int) vmsvga3dBackSetViewPort(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6211	{
6212	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6213	AssertReturn(pState, VERR_NO_MEMORY);
6214
6215	Log(("vmsvga3dSetViewPort cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6216
6217	PVMSVGA3DCONTEXT pContext;
6218	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6219	AssertRCReturn(rc, rc);
6220
6221	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6222
6223	/* Save for vm state save/restore. */
6224	pContext->state.RectViewPort = *pRect;
6225	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
6226
6227	/** @todo y-inversion for partial viewport coordinates? */
6228	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
6229	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6230
6231	/* Reset the projection matrix as that relies on the viewport setting. */
6232	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6233	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION,
6234	pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6235	else
6236	{
6237	float matrix[16];
6238
6239	/* identity matrix if no matrix set. */
6240	memset(matrix, 0, sizeof(matrix));
6241	matrix[0] = 1.0;
6242	matrix[5] = 1.0;
6243	matrix[10] = 1.0;
6244	matrix[15] = 1.0;
6245	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
6246	}
6247
6248	return VINF_SUCCESS;
6249	}
6250
6251	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4])
6252	{
6253	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6254	AssertReturn(pState, VERR_NO_MEMORY);
6255	double oglPlane[4];
6256
6257	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)));
6258	AssertReturn(index < SVGA3D_NUM_CLIPPLANES, VERR_INVALID_PARAMETER);
6259
6260	PVMSVGA3DCONTEXT pContext;
6261	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6262	AssertRCReturn(rc, rc);
6263
6264	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6265
6266	/* Store for vm state save/restore. */
6267	pContext->state.aClipPlane[index].fValid = true;
6268	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
6269
6270	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
6271	oglPlane[0] = (double)plane[0];
6272	oglPlane[1] = (double)plane[1];
6273	oglPlane[2] = (double)plane[2];
6274	oglPlane[3] = (double)plane[3];
6275
6276	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
6277	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6278
6279	return VINF_SUCCESS;
6280	}
6281
6282	static DECLCALLBACK(int) vmsvga3dBackSetScissorRect(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6283	{
6284	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6285	AssertReturn(pState, VERR_NO_MEMORY);
6286
6287	Log(("vmsvga3dSetScissorRect cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6288
6289	PVMSVGA3DCONTEXT pContext;
6290	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6291	AssertRCReturn(rc, rc);
6292
6293	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6294
6295	/* Store for vm state save/restore. */
6296	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
6297	pContext->state.RectScissor = *pRect;
6298
6299	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
6300	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6301
6302	return VINF_SUCCESS;
6303	}
6304
6305	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
6306	{
6307	/* Convert byte color components to float (0-1.0) */
6308	*pAlpha = (GLfloat)(color >> 24) / 255.0;
6309	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
6310	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
6311	*pBlue = (GLfloat)(color & 0xff) / 255.0;
6312	}
6313
6314	static DECLCALLBACK(int) vmsvga3dBackCommandClear(PVGASTATECC pThisCC, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
6315	uint32_t cRects, SVGA3dRect *pRect)
6316	{
6317	GLbitfield mask = 0;
6318	GLbitfield restoreMask = 0;
6319	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6320	AssertReturn(pState, VERR_NO_MEMORY);
6321	GLboolean fDepthWriteEnabled = GL_FALSE;
6322	GLboolean afColorWriteEnabled[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
6323
6324	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));
6325
6326	PVMSVGA3DCONTEXT pContext;
6327	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6328	AssertRCReturn(rc, rc);
6329
6330	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6331
6332	if (clearFlag & SVGA3D_CLEAR_COLOR)
6333	{
6334	GLfloat red, green, blue, alpha;
6335	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
6336
6337	/* Set the color clear value. */
6338	glClearColor(red, green, blue, alpha);
6339	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6340
6341	mask \|= GL_COLOR_BUFFER_BIT;
6342
6343	/* glClear will not clear the color buffer if writing is disabled. */
6344	glGetBooleanv(GL_COLOR_WRITEMASK, afColorWriteEnabled);
6345	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6346	if ( afColorWriteEnabled[0] == GL_FALSE
6347	\|\| afColorWriteEnabled[1] == GL_FALSE
6348	\|\| afColorWriteEnabled[2] == GL_FALSE
6349	\|\| afColorWriteEnabled[3] == GL_FALSE)
6350	{
6351	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
6352	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6353
6354	restoreMask \|= GL_COLOR_BUFFER_BIT;
6355	}
6356
6357	}
6358
6359	if (clearFlag & SVGA3D_CLEAR_STENCIL)
6360	{
6361	/** @todo possibly the same problem as with glDepthMask */
6362	glClearStencil(stencil);
6363	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6364
6365	mask \|= GL_STENCIL_BUFFER_BIT;
6366	}
6367
6368	if (clearFlag & SVGA3D_CLEAR_DEPTH)
6369	{
6370	glClearDepth((GLdouble)depth);
6371	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6372
6373	mask \|= GL_DEPTH_BUFFER_BIT;
6374
6375	/* glClear will not clear the depth buffer if writing is disabled. */
6376	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
6377	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6378	if (fDepthWriteEnabled == GL_FALSE)
6379	{
6380	glDepthMask(GL_TRUE);
6381	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6382
6383	restoreMask \|= GL_DEPTH_BUFFER_BIT;
6384	}
6385	}
6386
6387	/* Save the current scissor test bit and scissor box. */
6388	glPushAttrib(GL_SCISSOR_BIT);
6389	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6390
6391	if (cRects)
6392	{
6393	glEnable(GL_SCISSOR_TEST);
6394	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6395
6396	for (uint32_t i = 0; i < cRects; ++i)
6397	{
6398	LogFunc(("rect [%d] %d,%d %dx%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h));
6399	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
6400	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6401
6402	glClear(mask);
6403	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6404	}
6405	}
6406	else
6407	{
6408	glDisable(GL_SCISSOR_TEST);
6409	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6410
6411	glClear(mask);
6412	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6413	}
6414
6415	/* Restore the old scissor test bit and box */
6416	glPopAttrib();
6417	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6418
6419	/* Restore the write states. */
6420	if (restoreMask & GL_COLOR_BUFFER_BIT)
6421	{
6422	glColorMask(afColorWriteEnabled[0],
6423	afColorWriteEnabled[1],
6424	afColorWriteEnabled[2],
6425	afColorWriteEnabled[3]);
6426	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6427	}
6428
6429	if (restoreMask & GL_DEPTH_BUFFER_BIT)
6430	{
6431	glDepthMask(fDepthWriteEnabled);
6432	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6433	}
6434
6435	return VINF_SUCCESS;
6436	}
6437
6438	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
6439	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized, uint32_t &cbAttrib)
6440	{
6441	normalized = GL_FALSE;
6442	switch (identity.type)
6443	{
6444	case SVGA3D_DECLTYPE_FLOAT1:
6445	size = 1;
6446	type = GL_FLOAT;
6447	cbAttrib = sizeof(float);
6448	break;
6449	case SVGA3D_DECLTYPE_FLOAT2:
6450	size = 2;
6451	type = GL_FLOAT;
6452	cbAttrib = 2 * sizeof(float);
6453	break;
6454	case SVGA3D_DECLTYPE_FLOAT3:
6455	size = 3;
6456	type = GL_FLOAT;
6457	cbAttrib = 3 * sizeof(float);
6458	break;
6459	case SVGA3D_DECLTYPE_FLOAT4:
6460	size = 4;
6461	type = GL_FLOAT;
6462	cbAttrib = 4 * sizeof(float);
6463	break;
6464
6465	case SVGA3D_DECLTYPE_D3DCOLOR:
6466	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6467	type = GL_UNSIGNED_BYTE;
6468	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6469	cbAttrib = sizeof(uint32_t);
6470	break;
6471
6472	case SVGA3D_DECLTYPE_UBYTE4N:
6473	normalized = GL_TRUE;
6474	RT_FALL_THRU();
6475	case SVGA3D_DECLTYPE_UBYTE4:
6476	size = 4;
6477	type = GL_UNSIGNED_BYTE;
6478	cbAttrib = sizeof(uint32_t);
6479	break;
6480
6481	case SVGA3D_DECLTYPE_SHORT2N:
6482	normalized = GL_TRUE;
6483	RT_FALL_THRU();
6484	case SVGA3D_DECLTYPE_SHORT2:
6485	size = 2;
6486	type = GL_SHORT;
6487	cbAttrib = 2 * sizeof(uint16_t);
6488	break;
6489
6490	case SVGA3D_DECLTYPE_SHORT4N:
6491	normalized = GL_TRUE;
6492	RT_FALL_THRU();
6493	case SVGA3D_DECLTYPE_SHORT4:
6494	size = 4;
6495	type = GL_SHORT;
6496	cbAttrib = 4 * sizeof(uint16_t);
6497	break;
6498
6499	case SVGA3D_DECLTYPE_USHORT4N:
6500	normalized = GL_TRUE;
6501	size = 4;
6502	type = GL_UNSIGNED_SHORT;
6503	cbAttrib = 4 * sizeof(uint16_t);
6504	break;
6505
6506	case SVGA3D_DECLTYPE_USHORT2N:
6507	normalized = GL_TRUE;
6508	size = 2;
6509	type = GL_UNSIGNED_SHORT;
6510	cbAttrib = 2 * sizeof(uint16_t);
6511	break;
6512
6513	case SVGA3D_DECLTYPE_UDEC3:
6514	size = 3;
6515	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6516	cbAttrib = sizeof(uint32_t);
6517	break;
6518
6519	case SVGA3D_DECLTYPE_DEC3N:
6520	normalized = true;
6521	size = 3;
6522	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6523	cbAttrib = sizeof(uint32_t);
6524	break;
6525
6526	case SVGA3D_DECLTYPE_FLOAT16_2:
6527	size = 2;
6528	type = GL_HALF_FLOAT;
6529	cbAttrib = 2 * sizeof(uint16_t);
6530	break;
6531	case SVGA3D_DECLTYPE_FLOAT16_4:
6532	size = 4;
6533	type = GL_HALF_FLOAT;
6534	cbAttrib = 4 * sizeof(uint16_t);
6535	break;
6536	default:
6537	AssertFailedReturn(VERR_INVALID_PARAMETER);
6538	}
6539
6540	//pVertexElement->Method = identity.method;
6541	//pVertexElement->Usage = identity.usage;
6542
6543	return VINF_SUCCESS;
6544	}
6545
6546	static float vmsvga3dFloat16To32(uint16_t f16)
6547	{
6548	/* From Wiki */
6549	#ifndef INFINITY
6550	static uint32_t const sBitsINFINITY = UINT32_C(0x7f800000);
6551	#define INFINITY ((float const )&sBitsINFINITY)
6552	#endif
6553	#ifndef NAN
6554	static uint32_t const sBitsNAN = UINT32_C(0x7fc00000);
6555	#define NAN ((float const )&sBitsNAN)
6556	#endif
6557
6558	uint16_t const s = (f16 >> UINT16_C(15)) & UINT16_C(0x1);
6559	uint16_t const e = (f16 >> UINT16_C(10)) & UINT16_C(0x1f);
6560	uint16_t const m = (f16 ) & UINT16_C(0x3ff);
6561
6562	float result = s ? 1.0f : -1.0f;
6563	if (e == 0)
6564	{
6565	if (m == 0)
6566	result = 0.0f; / zero, -0 */
6567	else
6568	result = (float)m / 1024.0f / 16384.0f; / subnormal numbers: sign * 2^-14 * 0.m */
6569	}
6570	else if (e == 0x1f)
6571	{
6572	if (m == 0)
6573	result = INFINITY; / +-infinity */
6574	else
6575	result = NAN; /* NAN */
6576	}
6577	else
6578	{
6579	result = powf(2.0f, (float)e - 15.0f) (1.0f + (float)m / 1024.0f); /* sign * 2^(e-15) * 1.m */
6580	}
6581
6582	return result;
6583	}
6584
6585	/* Set a vertex attribute according to VMSVGA vertex declaration. */
6586	static int vmsvga3dSetVertexAttrib(PVMSVGA3DSTATE pState, GLuint index, SVGA3dVertexArrayIdentity const pIdentity, GLvoid const pv)
6587	{
6588	switch (pIdentity->type)
6589	{
6590	case SVGA3D_DECLTYPE_FLOAT1:
6591	{
6592	/* "One-component float expanded to (float, 0, 0, 1)." */
6593	GLfloat const p = (GLfloat )pv;
6594	GLfloat const v[4] = { p[0], 0.0f, 0.0f, 1.0f };
6595	pState->ext.glVertexAttrib4fv(index, v);
6596	break;
6597	}
6598	case SVGA3D_DECLTYPE_FLOAT2:
6599	{
6600	/* "Two-component float expanded to (float, float, 0, 1)." */
6601	GLfloat const p = (GLfloat )pv;
6602	GLfloat const v[4] = { p[0], p[1], 0.0f, 1.0f };
6603	pState->ext.glVertexAttrib4fv(index, v);
6604	break;
6605	}
6606	case SVGA3D_DECLTYPE_FLOAT3:
6607	{
6608	/* "Three-component float expanded to (float, float, float, 1)." */
6609	GLfloat const p = (GLfloat )pv;
6610	GLfloat const v[4] = { p[0], p[1], p[2], 1.0f };
6611	pState->ext.glVertexAttrib4fv(index, v);
6612	break;
6613	}
6614	case SVGA3D_DECLTYPE_FLOAT4:
6615	pState->ext.glVertexAttrib4fv(index, (GLfloat const *)pv);
6616	break;
6617	case SVGA3D_DECLTYPE_D3DCOLOR:
6618	/** @todo Need to swap bytes? */
6619	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6620	break;
6621	case SVGA3D_DECLTYPE_UBYTE4:
6622	pState->ext.glVertexAttrib4ubv(index, (GLubyte const *)pv);
6623	break;
6624	case SVGA3D_DECLTYPE_SHORT2:
6625	{
6626	/* "Two-component, signed short expanded to (value, value, 0, 1)." */
6627	GLshort const p = (GLshort const )pv;
6628	GLshort const v[4] = { p[0], p[1], 0, 1 };
6629	pState->ext.glVertexAttrib4sv(index, v);
6630	break;
6631	}
6632	case SVGA3D_DECLTYPE_SHORT4:
6633	pState->ext.glVertexAttrib4sv(index, (GLshort const *)pv);
6634	break;
6635	case SVGA3D_DECLTYPE_UBYTE4N:
6636	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6637	break;
6638	case SVGA3D_DECLTYPE_SHORT2N:
6639	{
6640	/* "Normalized, two-component, signed short, expanded to (first short/32767.0, second short/32767.0, 0, 1)." */
6641	GLshort const p = (GLshort const )pv;
6642	GLshort const v[4] = { p[0], p[1], 0, 1 };
6643	pState->ext.glVertexAttrib4Nsv(index, v);
6644	break;
6645	}
6646	case SVGA3D_DECLTYPE_SHORT4N:
6647	pState->ext.glVertexAttrib4Nsv(index, (GLshort const *)pv);
6648	break;
6649	case SVGA3D_DECLTYPE_USHORT2N:
6650	{
6651	GLushort const p = (GLushort const )pv;
6652	GLushort const v[4] = { p[0], p[1], 0, 1 };
6653	pState->ext.glVertexAttrib4Nusv(index, v);
6654	break;
6655	}
6656	case SVGA3D_DECLTYPE_USHORT4N:
6657	pState->ext.glVertexAttrib4Nusv(index, (GLushort const *)pv);
6658	break;
6659	case SVGA3D_DECLTYPE_UDEC3:
6660	{
6661	/** @todo Test */
6662	/* "Three-component, unsigned, 10 10 10 format expanded to (value, value, value, 1)." */
6663	uint32_t const u32 = (uint32_t )pv;
6664	GLfloat const v[4] = { (float)(u32 & 0x3ff), (float)((u32 >> 10) & 0x3ff), (float)((u32 >> 20) & 0x3ff), 1.0f };
6665	pState->ext.glVertexAttrib4fv(index, v);
6666	break;
6667	}
6668	case SVGA3D_DECLTYPE_DEC3N:
6669	{
6670	/** @todo Test */
6671	/* "Three-component, signed, 10 10 10 format normalized and expanded to (v[0]/511.0, v[1]/511.0, v[2]/511.0, 1)." */
6672	uint32_t const u32 = (uint32_t )pv;
6673	GLfloat const v[4] = { (u32 & 0x3ff) / 511.0f, ((u32 >> 10) & 0x3ff) / 511.0f, ((u32 >> 20) & 0x3ff) / 511.0f, 1.0f };
6674	pState->ext.glVertexAttrib4fv(index, v);
6675	break;
6676	}
6677	case SVGA3D_DECLTYPE_FLOAT16_2:
6678	{
6679	/** @todo Test */
6680	/* "Two-component, 16-bit, floating point expanded to (value, value, 0, 1)." */
6681	uint16_t const p = (uint16_t )pv;
6682	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]), 0.0f, 1.0f };
6683	pState->ext.glVertexAttrib4fv(index, v);
6684	break;
6685	}
6686	case SVGA3D_DECLTYPE_FLOAT16_4:
6687	{
6688	/** @todo Test */
6689	uint16_t const p = (uint16_t )pv;
6690	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]),
6691	vmsvga3dFloat16To32(p[2]), vmsvga3dFloat16To32(p[3]) };
6692	pState->ext.glVertexAttrib4fv(index, v);
6693	break;
6694	}
6695	default:
6696	AssertFailedReturn(VERR_INVALID_PARAMETER);
6697	}
6698
6699	return VINF_SUCCESS;
6700	}
6701
6702	/* Convert VMWare primitive type to its OpenGL equivalent. */
6703	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6704	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6705	{
6706	switch (PrimitiveType)
6707	{
6708	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6709	*pMode = GL_TRIANGLES;
6710	pcVertices = cPrimitiveCount 3;
6711	break;
6712	case SVGA3D_PRIMITIVE_POINTLIST:
6713	*pMode = GL_POINTS;
6714	*pcVertices = cPrimitiveCount;
6715	break;
6716	case SVGA3D_PRIMITIVE_LINELIST:
6717	*pMode = GL_LINES;
6718	pcVertices = cPrimitiveCount 2;
6719	break;
6720	case SVGA3D_PRIMITIVE_LINESTRIP:
6721	*pMode = GL_LINE_STRIP;
6722	*pcVertices = cPrimitiveCount + 1;
6723	break;
6724	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6725	*pMode = GL_TRIANGLE_STRIP;
6726	*pcVertices = cPrimitiveCount + 2;
6727	break;
6728	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6729	*pMode = GL_TRIANGLE_FAN;
6730	*pcVertices = cPrimitiveCount + 2;
6731	break;
6732	default:
6733	return VERR_INVALID_PARAMETER;
6734	}
6735	return VINF_SUCCESS;
6736	}
6737
6738	static int vmsvga3dResetTransformMatrices(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
6739	{
6740	int rc;
6741
6742	/* Reset the view matrix (also takes the world matrix into account). */
6743	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6744	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW,
6745	pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6746	else
6747	{
6748	float matrix[16];
6749
6750	/* identity matrix if no matrix set. */
6751	memset(matrix, 0, sizeof(matrix));
6752	matrix[0] = 1.0;
6753	matrix[5] = 1.0;
6754	matrix[10] = 1.0;
6755	matrix[15] = 1.0;
6756	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6757	}
6758
6759	/* Reset the projection matrix. */
6760	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6761	{
6762	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6763	}
6764	else
6765	{
6766	float matrix[16];
6767
6768	/* identity matrix if no matrix set. */
6769	memset(matrix, 0, sizeof(matrix));
6770	matrix[0] = 1.0;
6771	matrix[5] = 1.0;
6772	matrix[10] = 1.0;
6773	matrix[15] = 1.0;
6774	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6775	}
6776	AssertRC(rc);
6777	return rc;
6778	}
6779
6780	static int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext,
6781	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6782	SVGA3dVertexDecl *pVertexDecl,
6783	SVGA3dVertexDivisor const *paVertexDivisors)
6784	{
6785	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6786	unsigned const sidVertex = pVertexDecl[0].array.surfaceId;
6787
6788	PVMSVGA3DSURFACE pVertexSurface;
6789	int rc = vmsvga3dSurfaceFromSid(pState, sidVertex, &pVertexSurface);
6790	AssertRCReturn(rc, rc);
6791
6792	Log(("vmsvga3dDrawPrimitives: vertex surface sid=%u\n", sidVertex));
6793
6794	/* Create and/or bind the vertex buffer. */
6795	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6796	{
6797	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->paMipmapLevels[0].cbSurface));
6798	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6799	pContext = &pState->SharedCtx;
6800	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6801
6802	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6803	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6804	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6805
6806	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6807	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6808
6809	Assert(pVertexSurface->fDirty);
6810	/** @todo rethink usage dynamic/static */
6811	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->paMipmapLevels[0].cbSurface, pVertexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6812	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6813
6814	pVertexSurface->paMipmapLevels[0].fDirty = false;
6815	pVertexSurface->fDirty = false;
6816
6817	pVertexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6818
6819	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6820	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6821
6822	pContext = pSavedCtx;
6823	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6824	}
6825
6826	Assert(pVertexSurface->fDirty == false);
6827	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6828	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6829
6830	/* Setup the vertex declarations. */
6831	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6832	{
6833	GLint size;
6834	GLenum type;
6835	GLboolean normalized;
6836	uint32_t cbAttrib;
6837	GLuint index = iVertexDeclBase + iVertex;
6838
6839	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));
6840
6841	rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized, cbAttrib);
6842	AssertRCReturn(rc, rc);
6843
6844	ASSERT_GUEST_RETURN( pVertexSurface->paMipmapLevels[0].cbSurface >= pVertexDecl[iVertex].array.offset
6845	&& pVertexSurface->paMipmapLevels[0].cbSurface - pVertexDecl[iVertex].array.offset >= cbAttrib,
6846	VERR_INVALID_PARAMETER);
6847	RT_UNTRUSTED_VALIDATED_FENCE();
6848
6849	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6850	{
6851	/* Use numbered vertex arrays (or attributes) when shaders are active. */
6852	if (pVertexDecl[iVertex].array.stride)
6853	{
6854	pState->ext.glEnableVertexAttribArray(index);
6855	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6856	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6857	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6858	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6859
6860	GLuint divisor = paVertexDivisors && paVertexDivisors[index].instanceData ? 1 : 0;
6861	pState->ext.glVertexAttribDivisor(index, divisor);
6862	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6863
6864	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6865	}
6866	else
6867	{
6868	/*
6869	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6870	* - D3D (VMSVGA): "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6871	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6872	* VMSVGA uses the D3D semantics.
6873	*
6874	* Use glVertexAttrib in order to tell OpenGL to reuse the zero stride attributes for each vertex.
6875	*/
6876	pState->ext.glDisableVertexAttribArray(index);
6877	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6878
6879	const GLvoid v = (uint8_t )pVertexSurface->paMipmapLevels[0].pSurfaceData + pVertexDecl[iVertex].array.offset;
6880	vmsvga3dSetVertexAttrib(pState, index, &pVertexDecl[iVertex].identity, v);
6881	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6882	}
6883	}
6884	else
6885	{
6886	if (pVertexDecl[iVertex].array.stride == 0)
6887	{
6888	/* Zero stride means that the attribute pointer must not be increased.
6889	* See comment about stride in vmsvga3dDrawPrimitives.
6890	*/
6891	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
6892	AssertFailed();
6893	}
6894
6895	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6896	switch (pVertexDecl[iVertex].identity.usage)
6897	{
6898	case SVGA3D_DECLUSAGE_POSITIONT:
6899	case SVGA3D_DECLUSAGE_POSITION:
6900	{
6901	glEnableClientState(GL_VERTEX_ARRAY);
6902	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6903	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6904	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6905	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6906	break;
6907	}
6908	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6909	AssertFailed();
6910	break;
6911	case SVGA3D_DECLUSAGE_BLENDINDICES:
6912	AssertFailed();
6913	break;
6914	case SVGA3D_DECLUSAGE_NORMAL:
6915	glEnableClientState(GL_NORMAL_ARRAY);
6916	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6917	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6918	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6919	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6920	break;
6921	case SVGA3D_DECLUSAGE_PSIZE:
6922	AssertFailed();
6923	break;
6924	case SVGA3D_DECLUSAGE_TEXCOORD:
6925	/* Specify the affected texture unit. */
6926	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6927	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6928	#else
6929	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6930	#endif
6931	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6932	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6933	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6934	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6935	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6936	break;
6937	case SVGA3D_DECLUSAGE_TANGENT:
6938	AssertFailed();
6939	break;
6940	case SVGA3D_DECLUSAGE_BINORMAL:
6941	AssertFailed();
6942	break;
6943	case SVGA3D_DECLUSAGE_TESSFACTOR:
6944	AssertFailed();
6945	break;
6946	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6947	glEnableClientState(GL_COLOR_ARRAY);
6948	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6949	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6950	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6951	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6952	break;
6953	case SVGA3D_DECLUSAGE_FOG:
6954	glEnableClientState(GL_FOG_COORD_ARRAY);
6955	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6956	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
6957	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6958	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6959	break;
6960	case SVGA3D_DECLUSAGE_DEPTH:
6961	AssertFailed();
6962	break;
6963	case SVGA3D_DECLUSAGE_SAMPLE:
6964	AssertFailed();
6965	break;
6966	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
6967	}
6968	}
6969
6970	#ifdef LOG_ENABLED
6971	if (pVertexDecl[iVertex].array.stride == 0)
6972	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
6973	#endif
6974	}
6975
6976	return VINF_SUCCESS;
6977	}
6978
6979	static int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase,
6980	uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
6981	{
6982	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6983
6984	/* Clean up the vertex declarations. */
6985	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6986	{
6987	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
6988	{
6989	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
6990	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
6991	vmsvga3dResetTransformMatrices(pThisCC, pContext);
6992	}
6993
6994	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6995	{
6996	/* Use numbered vertex arrays when shaders are active. */
6997	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
6998	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6999	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
7000	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7001	}
7002	else
7003	{
7004	/* Use the predefined selection of vertex streams for the fixed pipeline. */
7005	switch (pVertexDecl[iVertex].identity.usage)
7006	{
7007	case SVGA3D_DECLUSAGE_POSITION:
7008	case SVGA3D_DECLUSAGE_POSITIONT:
7009	glDisableClientState(GL_VERTEX_ARRAY);
7010	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7011	break;
7012	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
7013	break;
7014	case SVGA3D_DECLUSAGE_BLENDINDICES:
7015	break;
7016	case SVGA3D_DECLUSAGE_NORMAL:
7017	glDisableClientState(GL_NORMAL_ARRAY);
7018	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7019	break;
7020	case SVGA3D_DECLUSAGE_PSIZE:
7021	break;
7022	case SVGA3D_DECLUSAGE_TEXCOORD:
7023	/* Specify the affected texture unit. */
7024	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
7025	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7026	#else
7027	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7028	#endif
7029	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
7030	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7031	break;
7032	case SVGA3D_DECLUSAGE_TANGENT:
7033	break;
7034	case SVGA3D_DECLUSAGE_BINORMAL:
7035	break;
7036	case SVGA3D_DECLUSAGE_TESSFACTOR:
7037	break;
7038	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
7039	glDisableClientState(GL_COLOR_ARRAY);
7040	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7041	break;
7042	case SVGA3D_DECLUSAGE_FOG:
7043	glDisableClientState(GL_FOG_COORD_ARRAY);
7044	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7045	break;
7046	case SVGA3D_DECLUSAGE_DEPTH:
7047	break;
7048	case SVGA3D_DECLUSAGE_SAMPLE:
7049	break;
7050	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7051	}
7052	}
7053	}
7054	/* Unbind the vertex buffer after usage. */
7055	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7056	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7057	return VINF_SUCCESS;
7058	}
7059
7060	static DECLCALLBACK(int) vmsvga3dBackDrawPrimitives(PVGASTATECC pThisCC, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
7061	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
7062	SVGA3dVertexDivisor *pVertexDivisor)
7063	{
7064	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7065	AssertReturn(pState, VERR_INTERNAL_ERROR);
7066	uint32_t iCurrentVertex;
7067
7068	Log(("vmsvga3dDrawPrimitives cid=%u numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
7069
7070	/* Caller already check these, but it cannot hurt to check again... */
7071	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
7072	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
7073	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
7074
7075	if (!cVertexDivisor)
7076	pVertexDivisor = NULL; /* Be sure. */
7077
7078	PVMSVGA3DCONTEXT pContext;
7079	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7080	AssertRCReturn(rc, rc);
7081
7082	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7083
7084	/* Check for pretransformed vertex declarations. */
7085	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7086	{
7087	switch (pVertexDecl[iVertex].identity.usage)
7088	{
7089	case SVGA3D_DECLUSAGE_POSITIONT:
7090	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
7091	RT_FALL_THRU();
7092	case SVGA3D_DECLUSAGE_POSITION:
7093	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
7094	pContext->state.RectViewPort.h,
7095	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
7096	break;
7097	default: /* Shut up MSC. */ break;
7098	}
7099	}
7100
7101	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
7102	if (pContext->pShaderContext)
7103	{
7104	uint32_t rtHeight = 0;
7105
7106	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
7107	{
7108	PVMSVGA3DSURFACE pRenderTarget;
7109	rc = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pRenderTarget);
7110	AssertRCReturn(rc, rc);
7111
7112	rtHeight = pRenderTarget->paMipmapLevels[0].mipmapSize.height;
7113	}
7114
7115	ShaderUpdateState(pContext->pShaderContext, rtHeight);
7116	}
7117
7118	/* Try to figure out if instancing is used.
7119	* Support simple instancing case with one set of indexed data and one set per-instance data.
7120	*/
7121	uint32_t cInstances = 0;
7122	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
7123	{
7124	if (pVertexDivisor[iVertexDivisor].indexedData)
7125	{
7126	if (cInstances == 0)
7127	cInstances = pVertexDivisor[iVertexDivisor].count;
7128	else
7129	Assert(cInstances == pVertexDivisor[iVertexDivisor].count);
7130	}
7131	else if (pVertexDivisor[iVertexDivisor].instanceData)
7132	{
7133	Assert(pVertexDivisor[iVertexDivisor].count == 1);
7134	}
7135	}
7136
7137	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
7138	iCurrentVertex = 0;
7139	while (iCurrentVertex < numVertexDecls)
7140	{
7141	uint32_t sidVertex = SVGA_ID_INVALID;
7142	uint32_t iVertex;
7143
7144	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7145	{
7146	if ( sidVertex != SVGA_ID_INVALID
7147	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7148	)
7149	break;
7150	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7151	}
7152
7153	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThisCC, pContext, iCurrentVertex, iVertex - iCurrentVertex,
7154	&pVertexDecl[iCurrentVertex], pVertexDivisor);
7155	AssertRCReturn(rc, rc);
7156
7157	iCurrentVertex = iVertex;
7158	}
7159
7160	/* Now draw the primitives. */
7161	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
7162	{
7163	GLenum modeDraw;
7164	unsigned const sidIndex = pRange[iPrimitive].indexArray.surfaceId;
7165	PVMSVGA3DSURFACE pIndexSurface = NULL;
7166	unsigned cVertices;
7167
7168	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
7169	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
7170	if (RT_FAILURE(rc))
7171	{
7172	AssertRC(rc);
7173	goto internal_error;
7174	}
7175
7176	if (sidIndex != SVGA3D_INVALID_ID)
7177	{
7178	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
7179
7180	rc = vmsvga3dSurfaceFromSid(pState, sidIndex, &pIndexSurface);
7181	if (RT_FAILURE(rc))
7182	{
7183	AssertRC(rc);
7184	goto internal_error;
7185	}
7186
7187	Log(("vmsvga3dDrawPrimitives: index surface sid=%u\n", sidIndex));
7188
7189	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
7190	{
7191	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->paMipmapLevels[0].cbSurface));
7192	pContext = &pState->SharedCtx;
7193	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7194
7195	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
7196	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7197	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
7198
7199	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7200	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7201
7202	Assert(pIndexSurface->fDirty);
7203
7204	/** @todo rethink usage dynamic/static */
7205	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->paMipmapLevels[0].cbSurface, pIndexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
7206	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7207
7208	pIndexSurface->paMipmapLevels[0].fDirty = false;
7209	pIndexSurface->fDirty = false;
7210
7211	pIndexSurface->surfaceFlags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
7212
7213	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
7214	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7215
7216	pContext = pState->papContexts[cid];
7217	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7218	}
7219	Assert(pIndexSurface->fDirty == false);
7220
7221	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7222	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7223	}
7224
7225	if (!pIndexSurface)
7226	{
7227	/* Render without an index buffer */
7228	Log(("DrawPrimitive %d cPrimitives=%d cVertices=%d index index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias, cInstances));
7229	if (cInstances == 0)
7230	{
7231	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
7232	}
7233	else
7234	{
7235	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
7236	}
7237	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7238	}
7239	else
7240	{
7241	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
7242
7243	GLenum indexType;
7244	switch (pRange[iPrimitive].indexWidth)
7245	{
7246	case 1: indexType = GL_UNSIGNED_BYTE; break;
7247	case 2: indexType = GL_UNSIGNED_SHORT; break;
7248	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
7249	RT_FALL_THROUGH();
7250	case 4: indexType = GL_UNSIGNED_INT; break;
7251	}
7252
7253	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));
7254	if (cInstances == 0)
7255	{
7256	/* Render with an index buffer */
7257	if (pRange[iPrimitive].indexBias == 0)
7258	glDrawElements(modeDraw,
7259	cVertices,
7260	indexType,
7261	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
7262	else
7263	pState->ext.glDrawElementsBaseVertex(modeDraw,
7264	cVertices,
7265	indexType,
7266	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7267	pRange[iPrimitive].indexBias); /* basevertex */
7268	}
7269	else
7270	{
7271	/* Render with an index buffer */
7272	if (pRange[iPrimitive].indexBias == 0)
7273	pState->ext.glDrawElementsInstanced(modeDraw,
7274	cVertices,
7275	indexType,
7276	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7277	cInstances);
7278	else
7279	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
7280	cVertices,
7281	indexType,
7282	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7283	cInstances,
7284	pRange[iPrimitive].indexBias); /* basevertex */
7285	}
7286	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7287
7288	/* Unbind the index buffer after usage. */
7289	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
7290	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7291	}
7292	}
7293
7294	internal_error:
7295
7296	/* Deactivate the vertex declarations. */
7297	iCurrentVertex = 0;
7298	while (iCurrentVertex < numVertexDecls)
7299	{
7300	uint32_t sidVertex = SVGA_ID_INVALID;
7301	uint32_t iVertex;
7302
7303	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7304	{
7305	if ( sidVertex != SVGA_ID_INVALID
7306	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7307	)
7308	break;
7309	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7310	}
7311
7312	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThisCC, pContext, iCurrentVertex,
7313	iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
7314	AssertRCReturn(rc, rc);
7315
7316	iCurrentVertex = iVertex;
7317	}
7318
7319	#ifdef DEBUG
7320	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
7321	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
7322	{
7323	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
7324	{
7325	PVMSVGA3DSURFACE pTexture;
7326	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
7327	AssertContinue(RT_SUCCESS(rc2));
7328
7329	GLint activeTextureUnit = 0;
7330	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
7331	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7332
7333	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
7334	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7335
7336	GLint activeTexture = 0;
7337	glGetIntegerv(pTexture->bindingGL, &activeTexture);
7338	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7339
7340	pState->ext.glActiveTexture(activeTextureUnit);
7341	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7342
7343	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
7344	("%d vs %d unit %d (active unit %d) sid=%u\n", pTexture->oglId.texture, activeTexture, i,
7345	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
7346	}
7347	}
7348	#endif
7349
7350	#if 0
7351	/* Dump render target to a bitmap. */
7352	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
7353	{
7354	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
7355	PVMSVGA3DSURFACE pSurface;
7356	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
7357	if (RT_SUCCESS(rc2))
7358	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post");
7359	# if 0
7360	/* Stage 0 texture. */
7361	if (pContext->aSidActiveTextures[0] != SVGA3D_INVALID_ID)
7362	{
7363	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->aSidActiveTextures[0]);
7364	rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[0], &pSurface);
7365	if (RT_SUCCESS(rc2))
7366	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post-tx");
7367	}
7368	# endif
7369	}
7370	#endif
7371
7372	return rc;
7373	}
7374
7375
7376	static DECLCALLBACK(int) vmsvga3dBackShaderDefine(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
7377	{
7378	PVMSVGA3DSHADER pShader;
7379	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7380	AssertReturn(pState, VERR_NO_MEMORY);
7381
7382	Log(("vmsvga3dShaderDefine cid=%u shid=%d type=%s cbData=0x%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
7383
7384	PVMSVGA3DCONTEXT pContext;
7385	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7386	AssertRCReturn(rc, rc);
7387
7388	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
7389
7390	rc = vmsvga3dShaderParse(type, cbData, pShaderData);
7391	if (RT_FAILURE(rc))
7392	{
7393	AssertRC(rc);
7394	vmsvga3dShaderLogRel("Failed to parse", type, cbData, pShaderData);
7395	return rc;
7396	}
7397
7398	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7399
7400	if (type == SVGA3D_SHADERTYPE_VS)
7401	{
7402	if (shid >= pContext->cVertexShaders)
7403	{
7404	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7405	AssertReturn(pvNew, VERR_NO_MEMORY);
7406	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
7407	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
7408	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
7409	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
7410	pContext->cVertexShaders = shid + 1;
7411	}
7412	/* If one already exists with this id, then destroy it now. */
7413	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
7414	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paVertexShader[shid].type);
7415
7416	pShader = &pContext->paVertexShader[shid];
7417	}
7418	else
7419	{
7420	Assert(type == SVGA3D_SHADERTYPE_PS);
7421	if (shid >= pContext->cPixelShaders)
7422	{
7423	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7424	AssertReturn(pvNew, VERR_NO_MEMORY);
7425	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
7426	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
7427	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
7428	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
7429	pContext->cPixelShaders = shid + 1;
7430	}
7431	/* If one already exists with this id, then destroy it now. */
7432	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
7433	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paPixelShader[shid].type);
7434
7435	pShader = &pContext->paPixelShader[shid];
7436	}
7437
7438	memset(pShader, 0, sizeof(*pShader));
7439	pShader->id = shid;
7440	pShader->cid = cid;
7441	pShader->type = type;
7442	pShader->cbData = cbData;
7443	pShader->pShaderProgram = RTMemAllocZ(cbData);
7444	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
7445	memcpy(pShader->pShaderProgram, pShaderData, cbData);
7446
7447	#ifdef DUMP_SHADER_DISASSEMBLY
7448	LPD3DXBUFFER pDisassembly;
7449	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
7450	if (hr == D3D_OK)
7451	{
7452	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
7453	pDisassembly->Release();
7454	}
7455	#endif
7456
7457	switch (type)
7458	{
7459	case SVGA3D_SHADERTYPE_VS:
7460	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pVertexShader);
7461	AssertRC(rc);
7462	break;
7463
7464	case SVGA3D_SHADERTYPE_PS:
7465	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pPixelShader);
7466	AssertRC(rc);
7467	break;
7468
7469	default:
7470	AssertFailedReturn(VERR_INVALID_PARAMETER);
7471	}
7472	if (rc != VINF_SUCCESS)
7473	{
7474	vmsvga3dShaderLogRel("Failed to create", type, cbData, pShaderData);
7475
7476	RTMemFree(pShader->pShaderProgram);
7477	memset(pShader, 0, sizeof(*pShader));
7478	pShader->id = SVGA3D_INVALID_ID;
7479	}
7480
7481	return rc;
7482	}
7483
7484	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
7485	{
7486	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7487	AssertReturn(pState, VERR_NO_MEMORY);
7488	PVMSVGA3DSHADER pShader = NULL;
7489
7490	Log(("vmsvga3dShaderDestroy cid=%u shid=%d type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
7491
7492	PVMSVGA3DCONTEXT pContext;
7493	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7494	AssertRCReturn(rc, rc);
7495
7496	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7497
7498	if (type == SVGA3D_SHADERTYPE_VS)
7499	{
7500	if ( shid < pContext->cVertexShaders
7501	&& pContext->paVertexShader[shid].id == shid)
7502	{
7503	pShader = &pContext->paVertexShader[shid];
7504	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7505	AssertRC(rc);
7506	}
7507	}
7508	else
7509	{
7510	Assert(type == SVGA3D_SHADERTYPE_PS);
7511	if ( shid < pContext->cPixelShaders
7512	&& pContext->paPixelShader[shid].id == shid)
7513	{
7514	pShader = &pContext->paPixelShader[shid];
7515	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7516	AssertRC(rc);
7517	}
7518	}
7519
7520	if (pShader)
7521	{
7522	if (pShader->pShaderProgram)
7523	RTMemFree(pShader->pShaderProgram);
7524	memset(pShader, 0, sizeof(*pShader));
7525	pShader->id = SVGA3D_INVALID_ID;
7526	}
7527	else
7528	AssertFailedReturn(VERR_INVALID_PARAMETER);
7529
7530	return VINF_SUCCESS;
7531	}
7532
7533	static DECLCALLBACK(int) vmsvga3dBackShaderSet(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
7534	{
7535	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7536	AssertReturn(pState, VERR_NO_MEMORY);
7537	int rc;
7538
7539	Log(("vmsvga3dShaderSet cid=%u type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
7540
7541	if (!pContext)
7542	{
7543	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7544	AssertRCReturn(rc, rc);
7545	}
7546
7547	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7548
7549	if (type == SVGA3D_SHADERTYPE_VS)
7550	{
7551	/* Save for vm state save/restore. */
7552	pContext->state.shidVertex = shid;
7553	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
7554
7555	if ( shid < pContext->cVertexShaders
7556	&& pContext->paVertexShader[shid].id == shid)
7557	{
7558	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
7559	Assert(type == pShader->type);
7560
7561	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7562	AssertRCReturn(rc, rc);
7563	}
7564	else
7565	if (shid == SVGA_ID_INVALID)
7566	{
7567	/* Unselect shader. */
7568	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7569	AssertRCReturn(rc, rc);
7570	}
7571	else
7572	AssertFailedReturn(VERR_INVALID_PARAMETER);
7573	}
7574	else
7575	{
7576	/* Save for vm state save/restore. */
7577	pContext->state.shidPixel = shid;
7578	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
7579
7580	Assert(type == SVGA3D_SHADERTYPE_PS);
7581	if ( shid < pContext->cPixelShaders
7582	&& pContext->paPixelShader[shid].id == shid)
7583	{
7584	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
7585	Assert(type == pShader->type);
7586
7587	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7588	AssertRCReturn(rc, rc);
7589	}
7590	else
7591	if (shid == SVGA_ID_INVALID)
7592	{
7593	/* Unselect shader. */
7594	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
7595	AssertRCReturn(rc, rc);
7596	}
7597	else
7598	AssertFailedReturn(VERR_INVALID_PARAMETER);
7599	}
7600
7601	return VINF_SUCCESS;
7602	}
7603
7604	static DECLCALLBACK(int) vmsvga3dBackShaderSetConst(PVGASTATECC pThisCC, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
7605	{
7606	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7607	AssertReturn(pState, VERR_NO_MEMORY);
7608
7609	Log(("vmsvga3dShaderSetConst cid=%u reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
7610
7611	PVMSVGA3DCONTEXT pContext;
7612	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7613	AssertRCReturn(rc, rc);
7614
7615	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7616
7617	for (uint32_t i = 0; i < cRegisters; i++)
7618	{
7619	#ifdef LOG_ENABLED
7620	switch (ctype)
7621	{
7622	case SVGA3D_CONST_TYPE_FLOAT:
7623	{
7624	float pValuesF = (float )pValues;
7625	Log(("ConstantF %d: value=" FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR "\n",
7626	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])));
7627	break;
7628	}
7629
7630	case SVGA3D_CONST_TYPE_INT:
7631	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7632	break;
7633
7634	case SVGA3D_CONST_TYPE_BOOL:
7635	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7636	break;
7637
7638	default:
7639	AssertFailedReturn(VERR_INVALID_PARAMETER);
7640	}
7641	#endif
7642	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
7643	}
7644
7645	switch (type)
7646	{
7647	case SVGA3D_SHADERTYPE_VS:
7648	switch (ctype)
7649	{
7650	case SVGA3D_CONST_TYPE_FLOAT:
7651	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7652	break;
7653
7654	case SVGA3D_CONST_TYPE_INT:
7655	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7656	break;
7657
7658	case SVGA3D_CONST_TYPE_BOOL:
7659	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7660	break;
7661
7662	default:
7663	AssertFailedReturn(VERR_INVALID_PARAMETER);
7664	}
7665	AssertRCReturn(rc, rc);
7666	break;
7667
7668	case SVGA3D_SHADERTYPE_PS:
7669	switch (ctype)
7670	{
7671	case SVGA3D_CONST_TYPE_FLOAT:
7672	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7673	break;
7674
7675	case SVGA3D_CONST_TYPE_INT:
7676	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7677	break;
7678
7679	case SVGA3D_CONST_TYPE_BOOL:
7680	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7681	break;
7682
7683	default:
7684	AssertFailedReturn(VERR_INVALID_PARAMETER);
7685	}
7686	AssertRCReturn(rc, rc);
7687	break;
7688
7689	default:
7690	AssertFailedReturn(VERR_INVALID_PARAMETER);
7691	}
7692
7693	return VINF_SUCCESS;
7694	}
7695
7696	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryCreate(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7697	{
7698	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7699	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7700	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7701
7702	GLuint idQuery = 0;
7703	pState->ext.glGenQueries(1, &idQuery);
7704	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7705	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7706	pContext->occlusion.idQuery = idQuery;
7707	return VINF_SUCCESS;
7708	}
7709
7710	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7711	{
7712	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7713	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7714	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7715
7716	if (pContext->occlusion.idQuery)
7717	{
7718	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7719	}
7720	return VINF_SUCCESS;
7721	}
7722
7723	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryBegin(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7724	{
7725	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7726	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7727	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7728
7729	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7730	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7731	return VINF_SUCCESS;
7732	}
7733
7734	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryEnd(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7735	{
7736	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7737	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7738	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7739
7740	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7741	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7742	return VINF_SUCCESS;
7743	}
7744
7745	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryGetData(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7746	{
7747	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7748	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7749	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7750
7751	GLuint pixels = 0;
7752	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7753	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7754
7755	*pu32Pixels = (uint32_t)pixels;
7756	return VINF_SUCCESS;
7757	}
7758
7759	/**
7760	* Worker for vmsvga3dUpdateHeapBuffersForSurfaces.
7761	*
7762	* This will allocate heap buffers if necessary, thus increasing the memory
7763	* usage of the process.
7764	*
7765	* @todo Would be interesting to share this code with the saved state code.
7766	*
7767	* @returns VBox status code.
7768	* @param pThisCC The VGA/VMSVGA context.
7769	* @param pSurface The surface to refresh the heap buffers for.
7770	*/
7771	static DECLCALLBACK(int) vmsvga3dBackSurfaceUpdateHeapBuffers(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
7772	{
7773	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7774	AssertReturn(pState, VERR_INVALID_STATE);
7775
7776	/*
7777	* Currently we've got trouble retreving bit for DEPTHSTENCIL
7778	* surfaces both for OpenGL and D3D, so skip these here (don't
7779	* wast memory on them).
7780	*/
7781	uint32_t const fSwitchFlags = pSurface->surfaceFlags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK;
7782	if ( fSwitchFlags != SVGA3D_SURFACE_HINT_DEPTHSTENCIL
7783	&& fSwitchFlags != (SVGA3D_SURFACE_HINT_DEPTHSTENCIL \| SVGA3D_SURFACE_HINT_TEXTURE))
7784	{
7785	/*
7786	* Change OpenGL context to the one the surface is associated with.
7787	*/
7788	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
7789	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7790
7791	/*
7792	* Work thru each mipmap level for each face.
7793	*/
7794	for (uint32_t iFace = 0; iFace < pSurface->cFaces; iFace++)
7795	{
7796	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[iFace * pSurface->cLevels];
7797	for (uint32_t i = 0; i < pSurface->cLevels; i++, pMipmapLevel++)
7798	{
7799	if (VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
7800	{
7801	Assert(pMipmapLevel->cbSurface);
7802	Assert(pMipmapLevel->cbSurface == pMipmapLevel->cbSurfacePlane * pMipmapLevel->mipmapSize.depth);
7803
7804	/*
7805	* Make sure we've got surface memory buffer.
7806	*/
7807	uint8_t pbDst = (uint8_t )pMipmapLevel->pSurfaceData;
7808	if (!pbDst)
7809	{
7810	pMipmapLevel->pSurfaceData = pbDst = (uint8_t *)RTMemAllocZ(pMipmapLevel->cbSurface);
7811	AssertReturn(pbDst, VERR_NO_MEMORY);
7812	}
7813
7814	/*
7815	* OpenGL specifics.
7816	*/
7817	switch (pSurface->enmOGLResType)
7818	{
7819	case VMSVGA3D_OGLRESTYPE_TEXTURE:
7820	{
7821	GLint activeTexture;
7822	glGetIntegerv(GL_TEXTURE_BINDING_2D, &activeTexture);
7823	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7824
7825	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
7826	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7827
7828	/* Set row length and alignment of the output data. */
7829	VMSVGAPACKPARAMS SavedParams;
7830	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
7831
7832	glGetTexImage(GL_TEXTURE_2D,
7833	i,
7834	pSurface->formatGL,
7835	pSurface->typeGL,
7836	pbDst);
7837	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7838
7839	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
7840
7841	/* Restore the old active texture. */
7842	glBindTexture(GL_TEXTURE_2D, activeTexture);
7843	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7844	break;
7845	}
7846
7847	case VMSVGA3D_OGLRESTYPE_BUFFER:
7848	{
7849	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
7850	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7851
7852	void *pvSrc = pState->ext.glMapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
7853	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7854	if (RT_VALID_PTR(pvSrc))
7855	memcpy(pbDst, pvSrc, pMipmapLevel->cbSurface);
7856	else
7857	AssertPtr(pvSrc);
7858
7859	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
7860	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7861
7862	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7863	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7864	break;
7865	}
7866
7867	default:
7868	AssertMsgFailed(("%#x\n", fSwitchFlags));
7869	}
7870	}
7871	/* else: There is no data in hardware yet, so whatever we got is already current. */
7872	}
7873	}
7874	}
7875
7876	return VINF_SUCCESS;
7877	}
7878
7879	static DECLCALLBACK(int) vmsvga3dBackQueryInterface(PVGASTATECC pThisCC, char const pszInterfaceName, void pvInterfaceFuncs, size_t cbInterfaceFuncs)
7880	{
7881	RT_NOREF(pThisCC);
7882
7883	int rc = VINF_SUCCESS;
7884	if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_3D) == 0)
7885	{
7886	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCS3D))
7887	{
7888	if (pvInterfaceFuncs)
7889	{
7890	VMSVGA3DBACKENDFUNCS3D p = (VMSVGA3DBACKENDFUNCS3D )pvInterfaceFuncs;
7891	p->pfnInit = vmsvga3dBackInit;
7892	p->pfnPowerOn = vmsvga3dBackPowerOn;
7893	p->pfnTerminate = vmsvga3dBackTerminate;
7894	p->pfnReset = vmsvga3dBackReset;
7895	p->pfnQueryCaps = vmsvga3dBackQueryCaps;
7896	p->pfnChangeMode = vmsvga3dBackChangeMode;
7897	p->pfnCreateTexture = vmsvga3dBackCreateTexture;
7898	p->pfnSurfaceDestroy = vmsvga3dBackSurfaceDestroy;
7899	p->pfnSurfaceInvalidateImage = vmsvga3dBackSurfaceInvalidateImage;
7900	p->pfnSurfaceCopy = vmsvga3dBackSurfaceCopy;
7901	p->pfnSurfaceDMACopyBox = vmsvga3dBackSurfaceDMACopyBox;
7902	p->pfnSurfaceStretchBlt = vmsvga3dBackSurfaceStretchBlt;
7903	p->pfnUpdateHostScreenViewport = vmsvga3dBackUpdateHostScreenViewport;
7904	p->pfnDefineScreen = vmsvga3dBackDefineScreen;
7905	p->pfnDestroyScreen = vmsvga3dBackDestroyScreen;
7906	p->pfnSurfaceBlitToScreen = vmsvga3dBackSurfaceBlitToScreen;
7907	p->pfnSurfaceUpdateHeapBuffers = vmsvga3dBackSurfaceUpdateHeapBuffers;
7908	}
7909	}
7910	else
7911	{
7912	AssertFailed();
7913	rc = VERR_INVALID_PARAMETER;
7914	}
7915	}
7916	else if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_VGPU9) == 0)
7917	{
7918	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCSVGPU9))
7919	{
7920	if (pvInterfaceFuncs)
7921	{
7922	VMSVGA3DBACKENDFUNCSVGPU9 p = (VMSVGA3DBACKENDFUNCSVGPU9 )pvInterfaceFuncs;
7923	p->pfnContextDefine = vmsvga3dBackContextDefine;
7924	p->pfnContextDestroy = vmsvga3dBackContextDestroy;
7925	p->pfnSetTransform = vmsvga3dBackSetTransform;
7926	p->pfnSetZRange = vmsvga3dBackSetZRange;
7927	p->pfnSetRenderState = vmsvga3dBackSetRenderState;
7928	p->pfnSetRenderTarget = vmsvga3dBackSetRenderTarget;
7929	p->pfnSetTextureState = vmsvga3dBackSetTextureState;
7930	p->pfnSetMaterial = vmsvga3dBackSetMaterial;
7931	p->pfnSetLightData = vmsvga3dBackSetLightData;
7932	p->pfnSetLightEnabled = vmsvga3dBackSetLightEnabled;
7933	p->pfnSetViewPort = vmsvga3dBackSetViewPort;
7934	p->pfnSetClipPlane = vmsvga3dBackSetClipPlane;
7935	p->pfnCommandClear = vmsvga3dBackCommandClear;
7936	p->pfnDrawPrimitives = vmsvga3dBackDrawPrimitives;
7937	p->pfnSetScissorRect = vmsvga3dBackSetScissorRect;
7938	p->pfnGenerateMipmaps = vmsvga3dBackGenerateMipmaps;
7939	p->pfnShaderDefine = vmsvga3dBackShaderDefine;
7940	p->pfnShaderDestroy = vmsvga3dBackShaderDestroy;
7941	p->pfnShaderSet = vmsvga3dBackShaderSet;
7942	p->pfnShaderSetConst = vmsvga3dBackShaderSetConst;
7943	p->pfnOcclusionQueryCreate = vmsvga3dBackOcclusionQueryCreate;
7944	p->pfnOcclusionQueryDelete = vmsvga3dBackOcclusionQueryDelete;
7945	p->pfnOcclusionQueryBegin = vmsvga3dBackOcclusionQueryBegin;
7946	p->pfnOcclusionQueryEnd = vmsvga3dBackOcclusionQueryEnd;
7947	p->pfnOcclusionQueryGetData = vmsvga3dBackOcclusionQueryGetData;
7948	}
7949	}
7950	else
7951	{
7952	AssertFailed();
7953	rc = VERR_INVALID_PARAMETER;
7954	}
7955	}
7956	else
7957	rc = VERR_NOT_IMPLEMENTED;
7958	return rc;
7959	}
7960
7961
7962	extern VMSVGA3DBACKENDDESC const g_BackendLegacy =
7963	{
7964	"LEGACY",
7965	vmsvga3dBackQueryInterface
7966	};

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 94377

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