DevVGA-SVGA3d-ogl.cpp@ 95288

Last change on this file since 95288 was 95232, checked in by vboxsync, 2 years ago
Devices/Graphics: track constant, vertex, index buffers; clear resource view entriee when surface is deleted (doxygen fix). bugref:9830
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1	/* $Id: DevVGA-SVGA3d-ogl.cpp 95232 2022-06-08 15:34:49Z 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	/* Free all leftover surface states. */
1233	for (uint32_t i = 0; i < pState->cSurfaces; i++)
1234	{
1235	AssertPtr(pState->papSurfaces[i]);
1236	RTMemFree(pState->papSurfaces[i]);
1237	pState->papSurfaces[i] = NULL;
1238	}
1239
1240	/* Destroy all leftover contexts. */
1241	for (uint32_t i = 0; i < pState->cContexts; i++)
1242	{
1243	AssertPtr(pState->papContexts[i]);
1244	RTMemFree(pState->papContexts[i]);
1245	pState->papContexts[i] = NULL;
1246	}
1247
1248	if (pState->papSurfaces)
1249	{
1250	RTMemFree(pState->papSurfaces);
1251	pState->papSurfaces = NULL;
1252	}
1253
1254	if (pState->papContexts)
1255	{
1256	RTMemFree(pState->papContexts);
1257	pState->papContexts = NULL;
1258	}
1259
1260	pThisCC->svga.p3dState = NULL;
1261	RTMemFree(pState);
1262	return VINF_SUCCESS;
1263	}
1264
1265
1266	static DECLCALLBACK(void) vmsvga3dBackUpdateHostScreenViewport(PVGASTATECC pThisCC, uint32_t idScreen, VMSVGAVIEWPORT const *pOldViewport)
1267	{
1268	/** @todo Move the visible framebuffer content here, don't wait for the guest to
1269	* redraw it. */
1270
1271	#ifdef RT_OS_DARWIN
1272	RT_NOREF(pOldViewport);
1273	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1274	if ( pState
1275	&& idScreen == 0
1276	&& pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
1277	{
1278	vmsvga3dCocoaViewUpdateViewport(pState->SharedCtx.cocoaView);
1279	}
1280	#else
1281	RT_NOREF(pThisCC, idScreen, pOldViewport);
1282	#endif
1283	}
1284
1285
1286	/**
1287	* Worker for vmsvga3dBackQueryCaps that figures out supported operations for a
1288	* given surface format capability.
1289	*
1290	* @returns Supported/indented operations (SVGA3DFORMAT_OP_XXX).
1291	* @param idx3dCaps The SVGA3D_CAPS_XXX value of the surface format.
1292	*
1293	* @remarks See fromat_cap_table in svga_format.c (mesa/gallium) for a reference
1294	* of implicit guest expectations:
1295	* http://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/svga/svga_format.c
1296	*/
1297	static uint32_t vmsvga3dGetSurfaceFormatSupport(uint32_t idx3dCaps)
1298	{
1299	uint32_t result = 0;
1300
1301	/** @todo missing:
1302	*
1303	* SVGA3DFORMAT_OP_PIXELSIZE
1304	*/
1305
1306	switch (idx3dCaps)
1307	{
1308	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1309	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1310	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1311	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1312	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1313	\| SVGA3DFORMAT_OP_DISPLAYMODE /* Should not be set for alpha formats. */
1314	\| SVGA3DFORMAT_OP_3DACCELERATION; /* implies OP_DISPLAYMODE */
1315	break;
1316
1317	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1318	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1319	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1320	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1321	result \|= SVGA3DFORMAT_OP_MEMBEROFGROUP_ARGB
1322	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1323	\| SVGA3DFORMAT_OP_SAME_FORMAT_UP_TO_ALPHA_RENDERTARGET;
1324	break;
1325	}
1326
1327	/** @todo check hardware caps! */
1328	switch (idx3dCaps)
1329	{
1330	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1331	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1332	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1333	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1334	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1335	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1336	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1337	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1338	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1339	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1340	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1341	result \|= SVGA3DFORMAT_OP_TEXTURE
1342	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET
1343	\| SVGA3DFORMAT_OP_OFFSCREENPLAIN
1344	\| SVGA3DFORMAT_OP_SAME_FORMAT_RENDERTARGET
1345	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1346	\| SVGA3DFORMAT_OP_CUBETEXTURE
1347	\| SVGA3DFORMAT_OP_SRGBREAD
1348	\| SVGA3DFORMAT_OP_SRGBWRITE;
1349	break;
1350
1351	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1352	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1353	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1354	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1355	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1356	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1357	result \|= SVGA3DFORMAT_OP_ZSTENCIL
1358	\| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH
1359	\| SVGA3DFORMAT_OP_TEXTURE /* Necessary for Ubuntu Unity */;
1360	break;
1361
1362	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1363	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1364	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1365	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1366	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1367	result \|= SVGA3DFORMAT_OP_TEXTURE
1368	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1369	\| SVGA3DFORMAT_OP_CUBETEXTURE
1370	\| SVGA3DFORMAT_OP_SRGBREAD;
1371	break;
1372
1373	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1374	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1375	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1376	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1377	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1378	break;
1379
1380	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1381	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1382	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1383	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1384	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1385	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1386	result \|= SVGA3DFORMAT_OP_TEXTURE
1387	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1388	\| SVGA3DFORMAT_OP_CUBETEXTURE
1389	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1390	break;
1391
1392	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1393	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1394	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1395	result \|= SVGA3DFORMAT_OP_TEXTURE
1396	\| SVGA3DFORMAT_OP_VOLUMETEXTURE
1397	\| SVGA3DFORMAT_OP_CUBETEXTURE
1398	\| SVGA3DFORMAT_OP_OFFSCREEN_RENDERTARGET;
1399	break;
1400
1401	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1402	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1403	result \|= SVGA3DFORMAT_OP_OFFSCREENPLAIN
1404	\| SVGA3DFORMAT_OP_CONVERT_TO_ARGB
1405	\| SVGA3DFORMAT_OP_TEXTURE;
1406	break;
1407
1408	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1409	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1410	break;
1411	}
1412	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1413
1414	return result;
1415	}
1416
1417	#if 0 /* unused */
1418	static uint32_t vmsvga3dGetDepthFormatSupport(PVMSVGA3DSTATE pState3D, uint32_t idx3dCaps)
1419	{
1420	RT_NOREF(pState3D, idx3dCaps);
1421
1422	/** @todo test this somehow */
1423	uint32_t result = SVGA3DFORMAT_OP_ZSTENCIL \| SVGA3DFORMAT_OP_ZSTENCIL_WITH_ARBITRARY_COLOR_DEPTH;
1424
1425	Log(("CAPS: %s =\n%s\n", vmsvga3dGetCapString(idx3dCaps), vmsvga3dGet3dFormatString(result)));
1426	return result;
1427	}
1428	#endif
1429
1430
1431	static DECLCALLBACK(int) vmsvga3dBackQueryCaps(PVGASTATECC pThisCC, SVGA3dDevCapIndex idx3dCaps, uint32_t *pu32Val)
1432	{
1433	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
1434	AssertReturn(pState, VERR_NO_MEMORY);
1435	int rc = VINF_SUCCESS;
1436
1437	*pu32Val = 0;
1438
1439	/*
1440	* The capabilities access by current (2015-03-01) linux sources (gallium,
1441	* vmwgfx, xorg-video-vmware) are annotated, caps without xref annotations
1442	* aren't access.
1443	*/
1444
1445	switch (idx3dCaps)
1446	{
1447	/* Linux: vmwgfx_fifo.c in kmod; only used with SVGA_CAP_GBOBJECTS. */
1448	case SVGA3D_DEVCAP_3D:
1449	pu32Val = 1; / boolean? */
1450	break;
1451
1452	case SVGA3D_DEVCAP_MAX_LIGHTS:
1453	*pu32Val = pState->caps.maxActiveLights;
1454	break;
1455
1456	case SVGA3D_DEVCAP_MAX_TEXTURES:
1457	*pu32Val = pState->caps.maxTextures;
1458	break;
1459
1460	case SVGA3D_DEVCAP_MAX_CLIP_PLANES:
1461	*pu32Val = pState->caps.maxClipDistances;
1462	break;
1463
1464	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1465	case SVGA3D_DEVCAP_VERTEX_SHADER_VERSION:
1466	*pu32Val = pState->caps.vertexShaderVersion;
1467	break;
1468
1469	case SVGA3D_DEVCAP_VERTEX_SHADER:
1470	/* boolean? */
1471	*pu32Val = (pState->caps.vertexShaderVersion != SVGA3DVSVERSION_NONE);
1472	break;
1473
1474	/* Linux: svga_screen.c in gallium; 3.0 or later required. */
1475	case SVGA3D_DEVCAP_FRAGMENT_SHADER_VERSION:
1476	*pu32Val = pState->caps.fragmentShaderVersion;
1477	break;
1478
1479	case SVGA3D_DEVCAP_FRAGMENT_SHADER:
1480	/* boolean? */
1481	*pu32Val = (pState->caps.fragmentShaderVersion != SVGA3DPSVERSION_NONE);
1482	break;
1483
1484	case SVGA3D_DEVCAP_S23E8_TEXTURES:
1485	case SVGA3D_DEVCAP_S10E5_TEXTURES:
1486	/* Must be obsolete by now; surface format caps specify the same thing. */
1487	rc = VERR_INVALID_PARAMETER;
1488	break;
1489
1490	case SVGA3D_DEVCAP_MAX_FIXED_VERTEXBLEND:
1491	break;
1492
1493	/*
1494	* 2. The BUFFER_FORMAT capabilities are deprecated, and they always
1495	* return TRUE. Even on physical hardware that does not support
1496	* these formats natively, the SVGA3D device will provide an emulation
1497	* which should be invisible to the guest OS.
1498	*/
1499	case SVGA3D_DEVCAP_D16_BUFFER_FORMAT:
1500	case SVGA3D_DEVCAP_D24S8_BUFFER_FORMAT:
1501	case SVGA3D_DEVCAP_D24X8_BUFFER_FORMAT:
1502	*pu32Val = 1;
1503	break;
1504
1505	case SVGA3D_DEVCAP_QUERY_TYPES:
1506	break;
1507
1508	case SVGA3D_DEVCAP_TEXTURE_GRADIENT_SAMPLING:
1509	break;
1510
1511	/* Linux: svga_screen.c in gallium; capped at 80.0, default 1.0. */
1512	case SVGA3D_DEVCAP_MAX_POINT_SIZE:
1513	AssertCompile(sizeof(uint32_t) == sizeof(float));
1514	(float )pu32Val = pState->caps.flPointSize[1];
1515	break;
1516
1517	case SVGA3D_DEVCAP_MAX_SHADER_TEXTURES:
1518	/** @todo ?? */
1519	rc = VERR_INVALID_PARAMETER;
1520	break;
1521
1522	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_2D_LEVELS); have default if missing. */
1523	case SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH:
1524	case SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT:
1525	*pu32Val = pState->caps.maxRectangleTextureSize;
1526	break;
1527
1528	/* Linux: svga_screen.c in gallium (for PIPE_CAP_MAX_TEXTURE_3D_LEVELS); have default if missing. */
1529	case SVGA3D_DEVCAP_MAX_VOLUME_EXTENT:
1530	//*pu32Val = pCaps->MaxVolumeExtent;
1531	*pu32Val = 256;
1532	break;
1533
1534	case SVGA3D_DEVCAP_MAX_TEXTURE_REPEAT:
1535	pu32Val = 32768; / hardcoded in Wine */
1536	break;
1537
1538	case SVGA3D_DEVCAP_MAX_TEXTURE_ASPECT_RATIO:
1539	//*pu32Val = pCaps->MaxTextureAspectRatio;
1540	break;
1541
1542	/* Linux: svga_screen.c in gallium (for PIPE_CAPF_MAX_TEXTURE_ANISOTROPY); defaults to 4.0. */
1543	case SVGA3D_DEVCAP_MAX_TEXTURE_ANISOTROPY:
1544	*pu32Val = pState->caps.maxTextureAnisotropy;
1545	break;
1546
1547	case SVGA3D_DEVCAP_MAX_PRIMITIVE_COUNT:
1548	case SVGA3D_DEVCAP_MAX_VERTEX_INDEX:
1549	pu32Val = 0xFFFFF; / hardcoded in Wine */
1550	break;
1551
1552	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_INSTRUCTIONS); defaults to 512. */
1553	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_INSTRUCTIONS:
1554	*pu32Val = pState->caps.maxVertexShaderInstructions;
1555	break;
1556
1557	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_INSTRUCTIONS:
1558	*pu32Val = pState->caps.maxFragmentShaderInstructions;
1559	break;
1560
1561	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_VERTEX/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1562	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEMPS:
1563	*pu32Val = pState->caps.maxVertexShaderTemps;
1564	break;
1565
1566	/* Linux: svga_screen.c in gallium (for PIPE_SHADER_FRAGMENT/PIPE_SHADER_CAP_MAX_TEMPS); defaults to 32. */
1567	case SVGA3D_DEVCAP_MAX_FRAGMENT_SHADER_TEMPS:
1568	*pu32Val = pState->caps.maxFragmentShaderTemps;
1569	break;
1570
1571	case SVGA3D_DEVCAP_TEXTURE_OPS:
1572	break;
1573
1574	case SVGA3D_DEVCAP_DEAD4: /* SVGA3D_DEVCAP_MULTISAMPLE_NONMASKABLESAMPLES */
1575	break;
1576
1577	case SVGA3D_DEVCAP_DEAD5: /* SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES */
1578	break;
1579
1580	case SVGA3D_DEVCAP_DEAD7: /* SVGA3D_DEVCAP_ALPHATOCOVERAGE */
1581	break;
1582
1583	case SVGA3D_DEVCAP_DEAD6: /* SVGA3D_DEVCAP_SUPERSAMPLE */
1584	break;
1585
1586	case SVGA3D_DEVCAP_AUTOGENMIPMAPS:
1587	//*pu32Val = !!(pCaps->Caps2 & D3DCAPS2_CANAUTOGENMIPMAP);
1588	break;
1589
1590	case SVGA3D_DEVCAP_MAX_VERTEX_SHADER_TEXTURES:
1591	break;
1592
1593	case SVGA3D_DEVCAP_MAX_RENDER_TARGETS: /** @todo same thing? */
1594	case SVGA3D_DEVCAP_MAX_SIMULTANEOUS_RENDER_TARGETS:
1595	*pu32Val = pState->caps.maxColorAttachments;
1596	break;
1597
1598	/*
1599	* This is the maximum number of SVGA context IDs that the guest
1600	* can define using SVGA_3D_CMD_CONTEXT_DEFINE.
1601	*/
1602	case SVGA3D_DEVCAP_MAX_CONTEXT_IDS:
1603	*pu32Val = SVGA3D_MAX_CONTEXT_IDS;
1604	break;
1605
1606	/*
1607	* This is the maximum number of SVGA surface IDs that the guest
1608	* can define using SVGA_3D_CMD_SURFACE_DEFINE*.
1609	*/
1610	case SVGA3D_DEVCAP_MAX_SURFACE_IDS:
1611	*pu32Val = SVGA3D_MAX_SURFACE_IDS;
1612	break;
1613
1614	#if 0 /* Appeared more recently, not yet implemented. */
1615	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1616	case SVGA3D_DEVCAP_LINE_AA:
1617	break;
1618	/* Linux: svga_screen.c in gallium; defaults to FALSE. */
1619	case SVGA3D_DEVCAP_LINE_STIPPLE:
1620	break;
1621	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1622	case SVGA3D_DEVCAP_MAX_LINE_WIDTH:
1623	break;
1624	/* Linux: svga_screen.c in gallium; defaults to 1.0. */
1625	case SVGA3D_DEVCAP_MAX_AA_LINE_WIDTH:
1626	break;
1627	#endif
1628
1629	/*
1630	* Supported surface formats.
1631	* Linux: svga_format.c in gallium, format_cap_table defines implicit expectations.
1632	*/
1633	case SVGA3D_DEVCAP_SURFACEFMT_X8R8G8B8:
1634	case SVGA3D_DEVCAP_SURFACEFMT_A8R8G8B8:
1635	case SVGA3D_DEVCAP_SURFACEFMT_A2R10G10B10:
1636	case SVGA3D_DEVCAP_SURFACEFMT_X1R5G5B5:
1637	case SVGA3D_DEVCAP_SURFACEFMT_A1R5G5B5:
1638	case SVGA3D_DEVCAP_SURFACEFMT_A4R4G4B4:
1639	case SVGA3D_DEVCAP_SURFACEFMT_R5G6B5:
1640	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE16:
1641	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8_ALPHA8:
1642	case SVGA3D_DEVCAP_SURFACEFMT_ALPHA8:
1643	case SVGA3D_DEVCAP_SURFACEFMT_LUMINANCE8:
1644	case SVGA3D_DEVCAP_SURFACEFMT_Z_D16:
1645	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8:
1646	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24X8:
1647	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF16:
1648	case SVGA3D_DEVCAP_SURFACEFMT_Z_DF24:
1649	case SVGA3D_DEVCAP_SURFACEFMT_Z_D24S8_INT:
1650	case SVGA3D_DEVCAP_SURFACEFMT_DXT1:
1651	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1652	break;
1653
1654	case SVGA3D_DEVCAP_SURFACEFMT_DXT2:
1655	case SVGA3D_DEVCAP_SURFACEFMT_DXT3:
1656	case SVGA3D_DEVCAP_SURFACEFMT_DXT4:
1657	case SVGA3D_DEVCAP_SURFACEFMT_DXT5:
1658	case SVGA3D_DEVCAP_SURFACEFMT_BUMPX8L8V8U8:
1659	case SVGA3D_DEVCAP_SURFACEFMT_A2W10V10U10:
1660	case SVGA3D_DEVCAP_SURFACEFMT_BUMPU8V8:
1661	case SVGA3D_DEVCAP_SURFACEFMT_Q8W8V8U8:
1662	case SVGA3D_DEVCAP_SURFACEFMT_CxV8U8:
1663	case SVGA3D_DEVCAP_SURFACEFMT_R_S10E5:
1664	case SVGA3D_DEVCAP_SURFACEFMT_R_S23E8:
1665	case SVGA3D_DEVCAP_SURFACEFMT_RG_S10E5:
1666	case SVGA3D_DEVCAP_SURFACEFMT_RG_S23E8:
1667	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S10E5:
1668	case SVGA3D_DEVCAP_SURFACEFMT_ARGB_S23E8:
1669	case SVGA3D_DEVCAP_SURFACEFMT_V16U16:
1670	case SVGA3D_DEVCAP_SURFACEFMT_G16R16:
1671	case SVGA3D_DEVCAP_SURFACEFMT_A16B16G16R16:
1672	case SVGA3D_DEVCAP_SURFACEFMT_UYVY:
1673	case SVGA3D_DEVCAP_SURFACEFMT_YUY2:
1674	case SVGA3D_DEVCAP_SURFACEFMT_NV12:
1675	case SVGA3D_DEVCAP_DEAD10: /* SVGA3D_DEVCAP_SURFACEFMT_AYUV */
1676	*pu32Val = vmsvga3dGetSurfaceFormatSupport(idx3dCaps);
1677	break;
1678
1679	/* Linux: Not referenced in current sources. */
1680	case SVGA3D_DEVCAP_SURFACEFMT_ATI1:
1681	case SVGA3D_DEVCAP_SURFACEFMT_ATI2:
1682	Log(("CAPS: Unknown CAP %s\n", vmsvga3dGetCapString(idx3dCaps)));
1683	rc = VERR_INVALID_PARAMETER;
1684	*pu32Val = 0;
1685	break;
1686
1687	default:
1688	Log(("CAPS: Unexpected CAP %d\n", idx3dCaps));
1689	rc = VERR_INVALID_PARAMETER;
1690	break;
1691	}
1692
1693	Log(("CAPS: %s - %x\n", vmsvga3dGetCapString(idx3dCaps), *pu32Val));
1694	return rc;
1695	}
1696
1697	/**
1698	* Convert SVGA format value to its OpenGL equivalent
1699	*
1700	* @remarks Clues to be had in format_texture_info table (wined3d/utils.c) with
1701	* help from wined3dformat_from_d3dformat().
1702	*/
1703	void vmsvga3dSurfaceFormat2OGL(PVMSVGA3DSURFACE pSurface, SVGA3dSurfaceFormat format)
1704	{
1705	#if 0
1706	#define AssertTestFmt(f) AssertMsgFailed(("Test me - " #f "\n"))
1707	#else
1708	#define AssertTestFmt(f) do {} while(0)
1709	#endif
1710	/* Init cbBlockGL for non-emulated formats. */
1711	pSurface->cbBlockGL = pSurface->cbBlock;
1712
1713	switch (format)
1714	{
1715	case SVGA3D_X8R8G8B8: /* D3DFMT_X8R8G8B8 - WINED3DFMT_B8G8R8X8_UNORM */
1716	pSurface->internalFormatGL = GL_RGB8;
1717	pSurface->formatGL = GL_BGRA;
1718	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1719	break;
1720	case SVGA3D_A8R8G8B8: /* D3DFMT_A8R8G8B8 - WINED3DFMT_B8G8R8A8_UNORM */
1721	pSurface->internalFormatGL = GL_RGBA8;
1722	pSurface->formatGL = GL_BGRA;
1723	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1724	break;
1725	case SVGA3D_R5G6B5: /* D3DFMT_R5G6B5 - WINED3DFMT_B5G6R5_UNORM */
1726	pSurface->internalFormatGL = GL_RGB5;
1727	pSurface->formatGL = GL_RGB;
1728	pSurface->typeGL = GL_UNSIGNED_SHORT_5_6_5;
1729	AssertTestFmt(SVGA3D_R5G6B5);
1730	break;
1731	case SVGA3D_X1R5G5B5: /* D3DFMT_X1R5G5B5 - WINED3DFMT_B5G5R5X1_UNORM */
1732	pSurface->internalFormatGL = GL_RGB5;
1733	pSurface->formatGL = GL_BGRA;
1734	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1735	AssertTestFmt(SVGA3D_X1R5G5B5);
1736	break;
1737	case SVGA3D_A1R5G5B5: /* D3DFMT_A1R5G5B5 - WINED3DFMT_B5G5R5A1_UNORM */
1738	pSurface->internalFormatGL = GL_RGB5_A1;
1739	pSurface->formatGL = GL_BGRA;
1740	pSurface->typeGL = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1741	AssertTestFmt(SVGA3D_A1R5G5B5);
1742	break;
1743	case SVGA3D_A4R4G4B4: /* D3DFMT_A4R4G4B4 - WINED3DFMT_B4G4R4A4_UNORM */
1744	pSurface->internalFormatGL = GL_RGBA4;
1745	pSurface->formatGL = GL_BGRA;
1746	pSurface->typeGL = GL_UNSIGNED_SHORT_4_4_4_4_REV;
1747	AssertTestFmt(SVGA3D_A4R4G4B4);
1748	break;
1749
1750	case SVGA3D_R8G8B8A8_UNORM:
1751	pSurface->internalFormatGL = GL_RGBA8;
1752	pSurface->formatGL = GL_RGBA;
1753	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1754	break;
1755
1756	case SVGA3D_Z_D32: /* D3DFMT_D32 - WINED3DFMT_D32_UNORM */
1757	pSurface->internalFormatGL = GL_DEPTH_COMPONENT32;
1758	pSurface->formatGL = GL_DEPTH_COMPONENT;
1759	pSurface->typeGL = GL_UNSIGNED_INT;
1760	break;
1761	case SVGA3D_Z_D16: /* D3DFMT_D16 - WINED3DFMT_D16_UNORM */
1762	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo Wine suggests GL_DEPTH_COMPONENT24. */
1763	pSurface->formatGL = GL_DEPTH_COMPONENT;
1764	pSurface->typeGL = GL_UNSIGNED_SHORT;
1765	AssertTestFmt(SVGA3D_Z_D16);
1766	break;
1767	case SVGA3D_Z_D24S8: /* D3DFMT_D24S8 - WINED3DFMT_D24_UNORM_S8_UINT */
1768	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1769	pSurface->formatGL = GL_DEPTH_STENCIL;
1770	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1771	break;
1772	case SVGA3D_Z_D15S1: /* D3DFMT_D15S1 - WINED3DFMT_S1_UINT_D15_UNORM */
1773	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16; /** @todo ??? */
1774	pSurface->formatGL = GL_DEPTH_STENCIL;
1775	pSurface->typeGL = GL_UNSIGNED_SHORT;
1776	/** @todo Wine sources hints at no hw support for this, so test this one! */
1777	AssertTestFmt(SVGA3D_Z_D15S1);
1778	break;
1779	case SVGA3D_Z_D24X8: /* D3DFMT_D24X8 - WINED3DFMT_X8D24_UNORM */
1780	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1781	pSurface->formatGL = GL_DEPTH_COMPONENT;
1782	pSurface->typeGL = GL_UNSIGNED_INT;
1783	AssertTestFmt(SVGA3D_Z_D24X8);
1784	break;
1785
1786	/* Advanced D3D9 depth formats. */
1787	case SVGA3D_Z_DF16: /* D3DFMT_DF16? - not supported */
1788	pSurface->internalFormatGL = GL_DEPTH_COMPONENT16;
1789	pSurface->formatGL = GL_DEPTH_COMPONENT;
1790	pSurface->typeGL = GL_HALF_FLOAT;
1791	break;
1792
1793	case SVGA3D_Z_DF24: /* D3DFMT_DF24? - not supported */
1794	pSurface->internalFormatGL = GL_DEPTH_COMPONENT24;
1795	pSurface->formatGL = GL_DEPTH_COMPONENT;
1796	pSurface->typeGL = GL_FLOAT; /* ??? */
1797	break;
1798
1799	case SVGA3D_Z_D24S8_INT: /* D3DFMT_D24S8 */
1800	pSurface->internalFormatGL = GL_DEPTH24_STENCIL8;
1801	pSurface->formatGL = GL_DEPTH_STENCIL;
1802	pSurface->typeGL = GL_UNSIGNED_INT_24_8;
1803	break;
1804
1805	case SVGA3D_DXT1: /* D3DFMT_DXT1 - WINED3DFMT_DXT1 */
1806	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
1807	pSurface->formatGL = GL_RGBA; /* not used */
1808	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1809	break;
1810
1811	case SVGA3D_DXT2: /* D3DFMT_DXT2 */
1812	/* "DXT2 and DXT3 are the same from an API perspective." */
1813	RT_FALL_THRU();
1814	case SVGA3D_DXT3: /* D3DFMT_DXT3 - WINED3DFMT_DXT3 */
1815	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
1816	pSurface->formatGL = GL_RGBA; /* not used */
1817	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1818	break;
1819
1820	case SVGA3D_DXT4: /* D3DFMT_DXT4 */
1821	/* "DXT4 and DXT5 are the same from an API perspective." */
1822	RT_FALL_THRU();
1823	case SVGA3D_DXT5: /* D3DFMT_DXT5 - WINED3DFMT_DXT5 */
1824	pSurface->internalFormatGL = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
1825	pSurface->formatGL = GL_RGBA; /* not used */
1826	pSurface->typeGL = GL_UNSIGNED_BYTE; /* not used */
1827	break;
1828
1829	case SVGA3D_LUMINANCE8: /* D3DFMT_? - ? */
1830	pSurface->internalFormatGL = GL_LUMINANCE8_EXT;
1831	pSurface->formatGL = GL_LUMINANCE;
1832	pSurface->typeGL = GL_UNSIGNED_BYTE;
1833	break;
1834
1835	case SVGA3D_LUMINANCE16: /* D3DFMT_? - ? */
1836	pSurface->internalFormatGL = GL_LUMINANCE16_EXT;
1837	pSurface->formatGL = GL_LUMINANCE;
1838	pSurface->typeGL = GL_UNSIGNED_SHORT;
1839	break;
1840
1841	case SVGA3D_LUMINANCE4_ALPHA4: /* D3DFMT_? - ? */
1842	pSurface->internalFormatGL = GL_LUMINANCE4_ALPHA4_EXT;
1843	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1844	pSurface->typeGL = GL_UNSIGNED_BYTE;
1845	break;
1846
1847	case SVGA3D_LUMINANCE8_ALPHA8: /* D3DFMT_? - ? */
1848	pSurface->internalFormatGL = GL_LUMINANCE8_ALPHA8_EXT;
1849	pSurface->formatGL = GL_LUMINANCE_ALPHA;
1850	pSurface->typeGL = GL_UNSIGNED_BYTE; /* unsigned_short causes issues even though this type should be 16-bit */
1851	break;
1852
1853	case SVGA3D_ALPHA8: /* D3DFMT_A8? - WINED3DFMT_A8_UNORM? */
1854	pSurface->internalFormatGL = GL_ALPHA8_EXT;
1855	pSurface->formatGL = GL_ALPHA;
1856	pSurface->typeGL = GL_UNSIGNED_BYTE;
1857	break;
1858
1859	#if 0
1860
1861	/* Bump-map formats */
1862	case SVGA3D_BUMPU8V8:
1863	return D3DFMT_V8U8;
1864	case SVGA3D_BUMPL6V5U5:
1865	return D3DFMT_L6V5U5;
1866	case SVGA3D_BUMPX8L8V8U8:
1867	return D3DFMT_X8L8V8U8;
1868	case SVGA3D_FORMAT_DEAD1:
1869	/* No corresponding D3D9 equivalent. */
1870	AssertFailedReturn(D3DFMT_UNKNOWN);
1871	/* signed bump-map formats */
1872	case SVGA3D_V8U8:
1873	return D3DFMT_V8U8;
1874	case SVGA3D_Q8W8V8U8:
1875	return D3DFMT_Q8W8V8U8;
1876	case SVGA3D_CxV8U8:
1877	return D3DFMT_CxV8U8;
1878	/* mixed bump-map formats */
1879	case SVGA3D_X8L8V8U8:
1880	return D3DFMT_X8L8V8U8;
1881	case SVGA3D_A2W10V10U10:
1882	return D3DFMT_A2W10V10U10;
1883	#endif
1884
1885	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB / / D3DFMT_A16B16G16R16F - WINED3DFMT_R16G16B16A16_FLOAT */
1886	pSurface->internalFormatGL = GL_RGBA16F;
1887	pSurface->formatGL = GL_RGBA;
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_ARGB_S10E5);
1893	#endif
1894	break;
1895
1896	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB / / D3DFMT_A32B32G32R32F - WINED3DFMT_R32G32B32A32_FLOAT */
1897	pSurface->internalFormatGL = GL_RGBA32F;
1898	pSurface->formatGL = GL_RGBA;
1899	pSurface->typeGL = GL_FLOAT; /* ?? - same as wine, so probably correct */
1900	break;
1901
1902	case SVGA3D_A2R10G10B10: /* D3DFMT_A2R10G10B10 - WINED3DFMT_B10G10R10A2_UNORM */
1903	pSurface->internalFormatGL = GL_RGB10_A2; /* ?? - same as wine, so probably correct */
1904	#if 0 /* bird: Wine uses GL_BGRA instead of GL_RGBA. */
1905	pSurface->formatGL = GL_RGBA;
1906	#else
1907	pSurface->formatGL = GL_BGRA;
1908	#endif
1909	pSurface->typeGL = GL_UNSIGNED_INT;
1910	AssertTestFmt(SVGA3D_A2R10G10B10);
1911	break;
1912
1913
1914	/* Single- and dual-component floating point formats */
1915	case SVGA3D_R_S10E5: /* D3DFMT_R16F - WINED3DFMT_R16_FLOAT */
1916	pSurface->internalFormatGL = GL_R16F;
1917	pSurface->formatGL = GL_RED;
1918	#if 0 /* bird: wine uses half float, sounds correct to me... */
1919	pSurface->typeGL = GL_FLOAT;
1920	#else
1921	pSurface->typeGL = GL_HALF_FLOAT;
1922	AssertTestFmt(SVGA3D_R_S10E5);
1923	#endif
1924	break;
1925	case SVGA3D_R_S23E8: /* D3DFMT_R32F - WINED3DFMT_R32_FLOAT */
1926	pSurface->internalFormatGL = GL_R32F;
1927	pSurface->formatGL = GL_RED;
1928	pSurface->typeGL = GL_FLOAT;
1929	break;
1930	case SVGA3D_RG_S10E5: /* D3DFMT_G16R16F - WINED3DFMT_R16G16_FLOAT */
1931	pSurface->internalFormatGL = GL_RG16F;
1932	pSurface->formatGL = GL_RG;
1933	#if 0 /* bird: wine uses half float, sounds correct to me... */
1934	pSurface->typeGL = GL_FLOAT;
1935	#else
1936	pSurface->typeGL = GL_HALF_FLOAT;
1937	AssertTestFmt(SVGA3D_RG_S10E5);
1938	#endif
1939	break;
1940	case SVGA3D_RG_S23E8: /* D3DFMT_G32R32F - WINED3DFMT_R32G32_FLOAT */
1941	pSurface->internalFormatGL = GL_RG32F;
1942	pSurface->formatGL = GL_RG;
1943	pSurface->typeGL = GL_FLOAT;
1944	break;
1945
1946	/*
1947	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
1948	* the most efficient format to use when creating new surfaces
1949	* expressly for index or vertex data.
1950	*/
1951	case SVGA3D_BUFFER:
1952	pSurface->internalFormatGL = -1;
1953	pSurface->formatGL = -1;
1954	pSurface->typeGL = -1;
1955	break;
1956
1957	#if 0
1958	return D3DFMT_UNKNOWN;
1959
1960	case SVGA3D_V16U16:
1961	return D3DFMT_V16U16;
1962	#endif
1963
1964	case SVGA3D_G16R16: /* D3DFMT_G16R16 - WINED3DFMT_R16G16_UNORM */
1965	pSurface->internalFormatGL = GL_RG16;
1966	pSurface->formatGL = GL_RG;
1967	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1968	pSurface->typeGL = GL_UNSIGNED_INT;
1969	#else
1970	pSurface->typeGL = GL_UNSIGNED_SHORT;
1971	AssertTestFmt(SVGA3D_G16R16);
1972	#endif
1973	break;
1974
1975	case SVGA3D_A16B16G16R16: /* D3DFMT_A16B16G16R16 - WINED3DFMT_R16G16B16A16_UNORM */
1976	pSurface->internalFormatGL = GL_RGBA16;
1977	pSurface->formatGL = GL_RGBA;
1978	#if 0 /* bird: Wine uses GL_UNSIGNED_SHORT here. */
1979	pSurface->typeGL = GL_UNSIGNED_INT; /* ??? */
1980	#else
1981	pSurface->typeGL = GL_UNSIGNED_SHORT;
1982	AssertTestFmt(SVGA3D_A16B16G16R16);
1983	#endif
1984	break;
1985
1986	case SVGA3D_R8G8B8A8_SNORM:
1987	pSurface->internalFormatGL = GL_RGB8;
1988	pSurface->formatGL = GL_BGRA;
1989	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
1990	AssertTestFmt(SVGA3D_R8G8B8A8_SNORM);
1991	break;
1992	case SVGA3D_R16G16_UNORM:
1993	pSurface->internalFormatGL = GL_RG16;
1994	pSurface->formatGL = GL_RG;
1995	pSurface->typeGL = GL_UNSIGNED_SHORT;
1996	AssertTestFmt(SVGA3D_R16G16_UNORM);
1997	break;
1998
1999	/* Packed Video formats */
2000	case SVGA3D_UYVY:
2001	case SVGA3D_YUY2:
2002	/* Use a BRGA texture to hold the data and convert it to an actual BGRA. */
2003	pSurface->fEmulated = true;
2004	pSurface->internalFormatGL = GL_RGBA8;
2005	pSurface->formatGL = GL_BGRA;
2006	pSurface->typeGL = GL_UNSIGNED_INT_8_8_8_8_REV;
2007	pSurface->cbBlockGL = 4 * pSurface->cxBlock * pSurface->cyBlock;
2008	break;
2009
2010	#if 0
2011	/* Planar video formats */
2012	case SVGA3D_NV12:
2013	return (D3DFORMAT)MAKEFOURCC('N', 'V', '1', '2');
2014
2015	/* Video format with alpha */
2016	case SVGA3D_FORMAT_DEAD2: /* Old SVGA3D_AYUV */
2017
2018	case SVGA3D_ATI1:
2019	case SVGA3D_ATI2:
2020	/* Unknown; only in DX10 & 11 */
2021	break;
2022	#endif
2023	default:
2024	AssertMsgFailed(("Unsupported format %d\n", format));
2025	break;
2026	}
2027	#undef AssertTestFmt
2028	}
2029
2030
2031	#if 0
2032	/**
2033	* Convert SVGA multi sample count value to its D3D equivalent
2034	*/
2035	D3DMULTISAMPLE_TYPE vmsvga3dMultipeSampleCount2D3D(uint32_t multisampleCount)
2036	{
2037	AssertCompile(D3DMULTISAMPLE_2_SAMPLES == 2);
2038	AssertCompile(D3DMULTISAMPLE_16_SAMPLES == 16);
2039
2040	if (multisampleCount > 16)
2041	return D3DMULTISAMPLE_NONE;
2042
2043	/** @todo exact same mapping as d3d? */
2044	return (D3DMULTISAMPLE_TYPE)multisampleCount;
2045	}
2046	#endif
2047
2048	/**
2049	* Destroy backend specific surface bits (part of SVGA_3D_CMD_SURFACE_DESTROY).
2050	*
2051	* @param pThisCC The device state.
2052	* @param fClearCOTableEntry Not relevant for this backend.
2053	* @param pSurface The surface being destroyed.
2054	*/
2055	static DECLCALLBACK(void) vmsvga3dBackSurfaceDestroy(PVGASTATECC pThisCC, bool fClearCOTableEntry, PVMSVGA3DSURFACE pSurface)
2056	{
2057	RT_NOREF(fClearCOTableEntry);
2058
2059	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2060	AssertReturnVoid(pState);
2061
2062	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2063	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2064
2065	switch (pSurface->enmOGLResType)
2066	{
2067	case VMSVGA3D_OGLRESTYPE_BUFFER:
2068	Assert(pSurface->oglId.buffer != OPENGL_INVALID_ID);
2069	pState->ext.glDeleteBuffers(1, &pSurface->oglId.buffer);
2070	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2071	break;
2072
2073	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2074	Assert(pSurface->oglId.texture != OPENGL_INVALID_ID);
2075	glDeleteTextures(1, &pSurface->oglId.texture);
2076	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2077	if (pSurface->fEmulated)
2078	{
2079	if (pSurface->idEmulated)
2080	{
2081	glDeleteTextures(1, &pSurface->idEmulated);
2082	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2083	}
2084	}
2085	else
2086	{
2087	Assert(!pSurface->idEmulated);
2088	}
2089	break;
2090
2091	case VMSVGA3D_OGLRESTYPE_RENDERBUFFER:
2092	Assert(pSurface->oglId.renderbuffer != OPENGL_INVALID_ID);
2093	pState->ext.glDeleteRenderbuffers(1, &pSurface->oglId.renderbuffer);
2094	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2095	break;
2096
2097	default:
2098	AssertMsg(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface),
2099	("hint=%#x, type=%d\n",
2100	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK), pSurface->enmOGLResType));
2101	break;
2102	}
2103	}
2104
2105
2106	static DECLCALLBACK(void) vmsvga3dBackSurfaceInvalidateImage(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface, uint32_t uFace, uint32_t uMipmap)
2107	{
2108	RT_NOREF(pThisCC, pSurface, uFace, uMipmap);
2109	}
2110
2111
2112	static DECLCALLBACK(int) vmsvga3dBackSurfaceCopy(PVGASTATECC pThisCC, SVGA3dSurfaceImageId dest, SVGA3dSurfaceImageId src,
2113	uint32_t cCopyBoxes, SVGA3dCopyBox *pBox)
2114	{
2115	int rc;
2116
2117	LogFunc(("Copy %d boxes from sid=%u face=%u mipmap=%u to sid=%u face=%u mipmap=%u\n",
2118	cCopyBoxes, src.sid, src.face, src.mipmap, dest.sid, dest.face, dest.mipmap));
2119
2120	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2121	AssertReturn(pState, VERR_INVALID_STATE);
2122
2123	PVMSVGA3DSURFACE pSurfaceSrc;
2124	rc = vmsvga3dSurfaceFromSid(pState, src.sid, &pSurfaceSrc);
2125	AssertRCReturn(rc, rc);
2126
2127	PVMSVGA3DSURFACE pSurfaceDst;
2128	rc = vmsvga3dSurfaceFromSid(pState, dest.sid, &pSurfaceDst);
2129	AssertRCReturn(rc, rc);
2130
2131	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceSrc))
2132	{
2133	/* The source surface is still in memory. */
2134	PVMSVGA3DMIPMAPLEVEL pMipmapLevelSrc;
2135	rc = vmsvga3dMipmapLevel(pSurfaceSrc, src.face, src.mipmap, &pMipmapLevelSrc);
2136	AssertRCReturn(rc, rc);
2137
2138	PVMSVGA3DMIPMAPLEVEL pMipmapLevelDst;
2139	rc = vmsvga3dMipmapLevel(pSurfaceDst, dest.face, dest.mipmap, &pMipmapLevelDst);
2140	AssertRCReturn(rc, rc);
2141
2142	/* The copy operation is performed on the shared context. */
2143	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
2144	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2145
2146	/* Use glTexSubImage to upload the data to the destination texture.
2147	* The latter must be an OpenGL texture.
2148	*/
2149	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurfaceDst))
2150	{
2151	LogFunc(("dest sid=%u type=0x%x format=%d -> create texture\n", dest.sid, pSurfaceDst->f.s.surface1Flags, pSurfaceDst->format));
2152	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, pContext->id, pSurfaceDst);
2153	AssertRCReturn(rc, rc);
2154	}
2155
2156	GLenum target;
2157	if (pSurfaceDst->targetGL == GL_TEXTURE_CUBE_MAP)
2158	target = vmsvga3dCubemapFaceFromIndex(dest.face);
2159	else
2160	{
2161	AssertMsg(pSurfaceDst->targetGL == GL_TEXTURE_2D, ("Test %#x\n", pSurfaceDst->targetGL));
2162	target = pSurfaceDst->targetGL;
2163	}
2164
2165	/* Save the unpacking parameters and set what we need here. */
2166	VMSVGAPACKPARAMS SavedParams;
2167	vmsvga3dOglSetUnpackParams(pState, pContext,
2168	pMipmapLevelSrc->mipmapSize.width,
2169	target == GL_TEXTURE_3D ? pMipmapLevelSrc->mipmapSize.height : 0,
2170	&SavedParams);
2171
2172	glBindTexture(pSurfaceDst->targetGL, pSurfaceDst->oglId.texture);
2173	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2174
2175	for (uint32_t i = 0; i < cCopyBoxes; ++i)
2176	{
2177	SVGA3dCopyBox clipBox = pBox[i];
2178	vmsvgaR3ClipCopyBox(&pMipmapLevelSrc->mipmapSize, &pMipmapLevelDst->mipmapSize, &clipBox);
2179	if ( !clipBox.w
2180	\|\| !clipBox.h
2181	\|\| !clipBox.d)
2182	{
2183	LogFunc(("Skipped empty box.\n"));
2184	continue;
2185	}
2186
2187	LogFunc(("copy box %d,%d,%d %dx%d to %d,%d,%d\n",
2188	clipBox.srcx, clipBox.srcy, clipBox.srcz, clipBox.w, clipBox.h, clipBox.x, clipBox.y, clipBox.z));
2189
2190	uint32_t const u32BlockX = clipBox.srcx / pSurfaceSrc->cxBlock;
2191	uint32_t const u32BlockY = clipBox.srcy / pSurfaceSrc->cyBlock;
2192	uint32_t const u32BlockZ = clipBox.srcz;
2193	Assert(u32BlockX * pSurfaceSrc->cxBlock == clipBox.srcx);
2194	Assert(u32BlockY * pSurfaceSrc->cyBlock == clipBox.srcy);
2195
2196	uint8_t const pSrcBits = (uint8_t )pMipmapLevelSrc->pSurfaceData
2197	+ pMipmapLevelSrc->cbSurfacePlane * u32BlockZ
2198	+ pMipmapLevelSrc->cbSurfacePitch * u32BlockY
2199	+ pSurfaceSrc->cbBlock * u32BlockX;
2200
2201	if (target == GL_TEXTURE_3D)
2202	{
2203	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2204	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2205	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2206	{
2207	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2208	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2209	uint32_t const imageSize = cBlocksX * cBlocksY * clipBox.d * pSurfaceSrc->cbBlock;
2210	pState->ext.glCompressedTexSubImage3D(target, dest.mipmap,
2211	clipBox.x, clipBox.y, clipBox.z,
2212	clipBox.w, clipBox.h, clipBox.d,
2213	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2214	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2215	}
2216	else
2217	{
2218	pState->ext.glTexSubImage3D(target, dest.mipmap,
2219	clipBox.x, clipBox.y, clipBox.z,
2220	clipBox.w, clipBox.h, clipBox.d,
2221	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2222	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2223	}
2224	}
2225	else
2226	{
2227	if ( pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2228	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2229	\|\| pSurfaceDst->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2230	{
2231	uint32_t const cBlocksX = (clipBox.w + pSurfaceSrc->cxBlock - 1) / pSurfaceSrc->cxBlock;
2232	uint32_t const cBlocksY = (clipBox.h + pSurfaceSrc->cyBlock - 1) / pSurfaceSrc->cyBlock;
2233	uint32_t const imageSize = cBlocksX * cBlocksY * pSurfaceSrc->cbBlock;
2234	pState->ext.glCompressedTexSubImage2D(target, dest.mipmap,
2235	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2236	pSurfaceSrc->internalFormatGL, (GLsizei)imageSize, pSrcBits);
2237	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2238	}
2239	else
2240	{
2241	glTexSubImage2D(target, dest.mipmap,
2242	clipBox.x, clipBox.y, clipBox.w, clipBox.h,
2243	pSurfaceSrc->formatGL, pSurfaceSrc->typeGL, pSrcBits);
2244	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2245	}
2246	}
2247	}
2248
2249	glBindTexture(pSurfaceDst->targetGL, 0);
2250	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2251
2252	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2253
2254	return VINF_SUCCESS;
2255	}
2256
2257	PVGASTATE pThis = PDMDEVINS_2_DATA(pThisCC->pDevIns, PVGASTATE);
2258	for (uint32_t i = 0; i < cCopyBoxes; i++)
2259	{
2260	SVGA3dBox destBox, srcBox;
2261
2262	srcBox.x = pBox[i].srcx;
2263	srcBox.y = pBox[i].srcy;
2264	srcBox.z = pBox[i].srcz;
2265	srcBox.w = pBox[i].w;
2266	srcBox.h = pBox[i].h;
2267	srcBox.d = pBox[i].d;
2268
2269	destBox.x = pBox[i].x;
2270	destBox.y = pBox[i].y;
2271	destBox.z = pBox[i].z;
2272	destBox.w = pBox[i].w;
2273	destBox.h = pBox[i].h;
2274	destBox.d = pBox[i].d;
2275
2276	/* No stretching is required, therefore use SVGA3D_STRETCH_BLT_POINT which translated to GL_NEAREST. */
2277	rc = vmsvga3dSurfaceStretchBlt(pThis, pThisCC, &dest, &destBox, &src, &srcBox, SVGA3D_STRETCH_BLT_POINT);
2278	AssertRCReturn(rc, rc);
2279	}
2280	return VINF_SUCCESS;
2281	}
2282
2283
2284	/**
2285	* Saves texture unpacking parameters and loads the specified ones.
2286	*
2287	* @param pState The VMSVGA3D state structure.
2288	* @param pContext The active context.
2289	* @param cxRow The number of pixels in a row. 0 for the entire width.
2290	* @param cyImage The height of the image in pixels. 0 for the entire height.
2291	* @param pSave Where to save stuff.
2292	*/
2293	void vmsvga3dOglSetUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, GLint cxRow, GLint cyImage,
2294	PVMSVGAPACKPARAMS pSave)
2295	{
2296	RT_NOREF(pState);
2297
2298	/*
2299	* Save (ignore errors, setting the defaults we want and avoids restore).
2300	*/
2301	pSave->iAlignment = 1;
2302	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2303	pSave->cxRow = 0;
2304	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2305	pSave->cyImage = 0;
2306	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_UNPACK_IMAGE_HEIGHT, &pSave->cyImage), pState, pContext);
2307
2308	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2309	pSave->fSwapBytes = GL_FALSE;
2310	glGetBooleanv(GL_UNPACK_SWAP_BYTES, &pSave->fSwapBytes);
2311	Assert(pSave->fSwapBytes == GL_FALSE);
2312
2313	pSave->fLsbFirst = GL_FALSE;
2314	glGetBooleanv(GL_UNPACK_LSB_FIRST, &pSave->fLsbFirst);
2315	Assert(pSave->fLsbFirst == GL_FALSE);
2316
2317	pSave->cSkipRows = 0;
2318	glGetIntegerv(GL_UNPACK_SKIP_ROWS, &pSave->cSkipRows);
2319	Assert(pSave->cSkipRows == 0);
2320
2321	pSave->cSkipPixels = 0;
2322	glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &pSave->cSkipPixels);
2323	Assert(pSave->cSkipPixels == 0);
2324
2325	pSave->cSkipImages = 0;
2326	glGetIntegerv(GL_UNPACK_SKIP_IMAGES, &pSave->cSkipImages);
2327	Assert(pSave->cSkipImages == 0);
2328
2329	VMSVGA3D_CLEAR_GL_ERRORS();
2330	#endif
2331
2332	/*
2333	* Setup unpack.
2334	*
2335	* Note! We use 1 as alignment here because we currently don't do any
2336	* aligning of line pitches anywhere.
2337	*/
2338	pSave->fChanged = 0;
2339	if (pSave->iAlignment != 1)
2340	{
2341	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1), pState, pContext);
2342	pSave->fChanged \|= VMSVGAPACKPARAMS_ALIGNMENT;
2343	}
2344	if (pSave->cxRow != cxRow)
2345	{
2346	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, cxRow), pState, pContext);
2347	pSave->fChanged \|= VMSVGAPACKPARAMS_ROW_LENGTH;
2348	}
2349	if (pSave->cyImage != cyImage)
2350	{
2351	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, cyImage), pState, pContext);
2352	pSave->fChanged \|= VMSVGAPACKPARAMS_IMAGE_HEIGHT;
2353	}
2354	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2355	if (pSave->fSwapBytes != 0)
2356	{
2357	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2358	pSave->fChanged \|= VMSVGAPACKPARAMS_SWAP_BYTES;
2359	}
2360	if (pSave->fLsbFirst != 0)
2361	{
2362	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE), pState, pContext);
2363	pSave->fChanged \|= VMSVGAPACKPARAMS_LSB_FIRST;
2364	}
2365	if (pSave->cSkipRows != 0)
2366	{
2367	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, 0), pState, pContext);
2368	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_ROWS;
2369	}
2370	if (pSave->cSkipPixels != 0)
2371	{
2372	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0), pState, pContext);
2373	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_PIXELS;
2374	}
2375	if (pSave->cSkipImages != 0)
2376	{
2377	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0), pState, pContext);
2378	pSave->fChanged \|= VMSVGAPACKPARAMS_SKIP_IMAGES;
2379	}
2380	#endif
2381	}
2382
2383
2384	/**
2385	* Restores texture unpacking parameters.
2386	*
2387	* @param pState The VMSVGA3D state structure.
2388	* @param pContext The active context.
2389	* @param pSave Where stuff was saved.
2390	*/
2391	void vmsvga3dOglRestoreUnpackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext,
2392	PCVMSVGAPACKPARAMS pSave)
2393	{
2394	RT_NOREF(pState);
2395
2396	if (pSave->fChanged & VMSVGAPACKPARAMS_ALIGNMENT)
2397	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2398	if (pSave->fChanged & VMSVGAPACKPARAMS_ROW_LENGTH)
2399	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2400	if (pSave->fChanged & VMSVGAPACKPARAMS_IMAGE_HEIGHT)
2401	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2402	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2403	if (pSave->fChanged & VMSVGAPACKPARAMS_SWAP_BYTES)
2404	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2405	if (pSave->fChanged & VMSVGAPACKPARAMS_LSB_FIRST)
2406	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2407	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_ROWS)
2408	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2409	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_PIXELS)
2410	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2411	if (pSave->fChanged & VMSVGAPACKPARAMS_SKIP_IMAGES)
2412	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_UNPACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2413	#endif
2414	}
2415
2416	/**
2417	* Create D3D/OpenGL texture object for the specified surface.
2418	*
2419	* Surfaces are created when needed.
2420	*
2421	* @param pThisCC The device context.
2422	* @param pContext The context.
2423	* @param idAssociatedContext Probably the same as pContext->id.
2424	* @param pSurface The surface to create the texture for.
2425	*/
2426	static DECLCALLBACK(int) vmsvga3dBackCreateTexture(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t idAssociatedContext,
2427	PVMSVGA3DSURFACE pSurface)
2428	{
2429	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
2430
2431	RT_NOREF(idAssociatedContext);
2432
2433	LogFunc(("sid=%u\n", pSurface->id));
2434
2435	uint32_t const numMipLevels = pSurface->cLevels;
2436
2437	/* Fugure out what kind of texture we are creating. */
2438	GLenum binding;
2439	GLenum target;
2440	if (pSurface->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
2441	{
2442	Assert(pSurface->cFaces == 6);
2443
2444	binding = GL_TEXTURE_BINDING_CUBE_MAP;
2445	target = GL_TEXTURE_CUBE_MAP;
2446	}
2447	else
2448	{
2449	if (pSurface->paMipmapLevels[0].mipmapSize.depth > 1)
2450	{
2451	binding = GL_TEXTURE_BINDING_3D;
2452	target = GL_TEXTURE_3D;
2453	}
2454	else
2455	{
2456	Assert(pSurface->cFaces == 1);
2457
2458	binding = GL_TEXTURE_BINDING_2D;
2459	target = GL_TEXTURE_2D;
2460	}
2461	}
2462
2463	/* All textures are created in the SharedCtx. */
2464	uint32_t idPrevCtx = pState->idActiveContext;
2465	pContext = &pState->SharedCtx;
2466	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
2467
2468	glGenTextures(1, &pSurface->oglId.texture);
2469	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2470	if (pSurface->fEmulated)
2471	{
2472	glGenTextures(1, &pSurface->idEmulated);
2473	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2474	}
2475	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_TEXTURE;
2476
2477	GLint activeTexture = 0;
2478	glGetIntegerv(binding, &activeTexture);
2479	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2480
2481	/* Must bind texture to the current context in order to change it. */
2482	glBindTexture(target, pSurface->oglId.texture);
2483	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2484
2485	/* Set the unpacking parameters. */
2486	VMSVGAPACKPARAMS SavedParams;
2487	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
2488
2489	/** @todo Set the mip map generation filter settings. */
2490
2491	/* Set the mipmap base and max level parameters. */
2492	glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
2493	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2494	glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, pSurface->cLevels - 1);
2495	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2496
2497	if (pSurface->fDirty)
2498	LogFunc(("sync dirty texture\n"));
2499
2500	/* Always allocate and initialize all mipmap levels; non-initialized mipmap levels used as render targets cause failures. */
2501	if (target == GL_TEXTURE_3D)
2502	{
2503	for (uint32_t i = 0; i < numMipLevels; ++i)
2504	{
2505	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2506	* exposing random host memory to the guest and helps a with the fedora 21 surface
2507	* corruption issues (launchpad, background, search field, login).
2508	*/
2509	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2510
2511	LogFunc(("sync dirty 3D texture mipmap level %d (pitch %x) (dirty %d)\n",
2512	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2513
2514	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2515	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2516	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2517	{
2518	pState->ext.glCompressedTexImage3D(GL_TEXTURE_3D,
2519	i,
2520	pSurface->internalFormatGL,
2521	pMipLevel->mipmapSize.width,
2522	pMipLevel->mipmapSize.height,
2523	pMipLevel->mipmapSize.depth,
2524	0,
2525	pMipLevel->cbSurface,
2526	pMipLevel->pSurfaceData);
2527	}
2528	else
2529	{
2530	pState->ext.glTexImage3D(GL_TEXTURE_3D,
2531	i,
2532	pSurface->internalFormatGL,
2533	pMipLevel->mipmapSize.width,
2534	pMipLevel->mipmapSize.height,
2535	pMipLevel->mipmapSize.depth,
2536	0, /* border */
2537	pSurface->formatGL,
2538	pSurface->typeGL,
2539	pMipLevel->pSurfaceData);
2540	}
2541	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2542
2543	pMipLevel->fDirty = false;
2544	}
2545	}
2546	else if (target == GL_TEXTURE_CUBE_MAP)
2547	{
2548	for (uint32_t iFace = 0; iFace < 6; ++iFace)
2549	{
2550	GLenum const Face = vmsvga3dCubemapFaceFromIndex(iFace);
2551
2552	for (uint32_t i = 0; i < numMipLevels; ++i)
2553	{
2554	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[iFace * numMipLevels + i];
2555	Assert(pMipLevel->mipmapSize.width == pMipLevel->mipmapSize.height);
2556	Assert(pMipLevel->mipmapSize.depth == 1);
2557
2558	LogFunc(("sync cube texture face %d mipmap level %d (dirty %d)\n",
2559	iFace, i, pMipLevel->fDirty));
2560
2561	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2562	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2563	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2564	{
2565	pState->ext.glCompressedTexImage2D(Face,
2566	i,
2567	pSurface->internalFormatGL,
2568	pMipLevel->mipmapSize.width,
2569	pMipLevel->mipmapSize.height,
2570	0,
2571	pMipLevel->cbSurface,
2572	pMipLevel->pSurfaceData);
2573	}
2574	else
2575	{
2576	glTexImage2D(Face,
2577	i,
2578	pSurface->internalFormatGL,
2579	pMipLevel->mipmapSize.width,
2580	pMipLevel->mipmapSize.height,
2581	0,
2582	pSurface->formatGL,
2583	pSurface->typeGL,
2584	pMipLevel->pSurfaceData);
2585	}
2586	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2587
2588	pMipLevel->fDirty = false;
2589	}
2590	}
2591	}
2592	else if (target == GL_TEXTURE_2D)
2593	{
2594	for (uint32_t i = 0; i < numMipLevels; ++i)
2595	{
2596	/* Allocate and initialize texture memory. Passing the zero filled pSurfaceData avoids
2597	* exposing random host memory to the guest and helps a with the fedora 21 surface
2598	* corruption issues (launchpad, background, search field, login).
2599	*/
2600	PVMSVGA3DMIPMAPLEVEL pMipLevel = &pSurface->paMipmapLevels[i];
2601	Assert(pMipLevel->mipmapSize.depth == 1);
2602
2603	LogFunc(("sync dirty texture mipmap level %d (pitch %x) (dirty %d)\n",
2604	i, pMipLevel->cbSurfacePitch, pMipLevel->fDirty));
2605
2606	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2607	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2608	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2609	{
2610	pState->ext.glCompressedTexImage2D(GL_TEXTURE_2D,
2611	i,
2612	pSurface->internalFormatGL,
2613	pMipLevel->mipmapSize.width,
2614	pMipLevel->mipmapSize.height,
2615	0,
2616	pMipLevel->cbSurface,
2617	pMipLevel->pSurfaceData);
2618	}
2619	else
2620	{
2621	glTexImage2D(GL_TEXTURE_2D,
2622	i,
2623	pSurface->internalFormatGL,
2624	pMipLevel->mipmapSize.width,
2625	pMipLevel->mipmapSize.height,
2626	0,
2627	pSurface->formatGL,
2628	pSurface->typeGL,
2629	NULL);
2630	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2631
2632	if (pSurface->fEmulated)
2633	{
2634	/* Bind the emulated texture and init it. */
2635	glBindTexture(GL_TEXTURE_2D, pSurface->idEmulated);
2636	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2637
2638	glTexImage2D(GL_TEXTURE_2D,
2639	i,
2640	pSurface->internalFormatGL,
2641	pMipLevel->mipmapSize.width,
2642	pMipLevel->mipmapSize.height,
2643	0,
2644	pSurface->formatGL,
2645	pSurface->typeGL,
2646	NULL);
2647	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2648	}
2649
2650	/* Fetch texture data: either to the actual or to the emulated texture.
2651	* The pSurfaceData buffer may be smaller than the entire texture
2652	* for emulated formats, in which case only part of the texture is synched.
2653	*/
2654	uint32_t cBlocksX = pMipLevel->mipmapSize.width / pSurface->cxBlock;
2655	uint32_t cBlocksY = pMipLevel->mipmapSize.height / pSurface->cyBlock;
2656	glTexSubImage2D(GL_TEXTURE_2D,
2657	i,
2658	0,
2659	0,
2660	cBlocksX,
2661	cBlocksY,
2662	pSurface->formatGL,
2663	pSurface->typeGL,
2664	pMipLevel->pSurfaceData);
2665	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2666
2667	if (pSurface->fEmulated)
2668	{
2669	/* Update the actual texture using the format converter. */
2670	FormatConvUpdateTexture(pState, pContext, pSurface, i);
2671
2672	/* Rebind the actual texture. */
2673	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
2674	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2675	}
2676	}
2677	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2678
2679	pMipLevel->fDirty = false;
2680	}
2681	}
2682
2683	pSurface->fDirty = false;
2684
2685	/* Restore unpacking parameters. */
2686	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
2687
2688	/* Restore the old active texture. */
2689	glBindTexture(target, activeTexture);
2690	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2691
2692	pSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_TEXTURE;
2693	pSurface->targetGL = target;
2694	pSurface->bindingGL = binding;
2695
2696	if (idPrevCtx < pState->cContexts && pState->papContexts[idPrevCtx]->id == idPrevCtx)
2697	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pState->papContexts[idPrevCtx]);
2698	return VINF_SUCCESS;
2699	}
2700
2701
2702	/**
2703	* Backend worker for implementing SVGA_3D_CMD_SURFACE_STRETCHBLT.
2704	*
2705	* @returns VBox status code.
2706	* @param pThis The VGA device instance.
2707	* @param pState The VMSVGA3d state.
2708	* @param pDstSurface The destination host surface.
2709	* @param uDstFace The destination face (valid).
2710	* @param uDstMipmap The destination mipmap level (valid).
2711	* @param pDstBox The destination box.
2712	* @param pSrcSurface The source host surface.
2713	* @param uSrcFace The destination face (valid).
2714	* @param uSrcMipmap The source mimap level (valid).
2715	* @param pSrcBox The source box.
2716	* @param enmMode The strecht blt mode .
2717	* @param pContext The VMSVGA3d context (already current for OGL).
2718	*/
2719	static DECLCALLBACK(int) vmsvga3dBackSurfaceStretchBlt(PVGASTATE pThis, PVMSVGA3DSTATE pState,
2720	PVMSVGA3DSURFACE pDstSurface, uint32_t uDstFace, uint32_t uDstMipmap, SVGA3dBox const *pDstBox,
2721	PVMSVGA3DSURFACE pSrcSurface, uint32_t uSrcFace, uint32_t uSrcMipmap, SVGA3dBox const *pSrcBox,
2722	SVGA3dStretchBltMode enmMode, PVMSVGA3DCONTEXT pContext)
2723	{
2724	RT_NOREF(pThis);
2725
2726	AssertReturn( RT_BOOL(pSrcSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2727	== RT_BOOL(pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL), VERR_NOT_IMPLEMENTED);
2728
2729	GLenum glAttachment = GL_COLOR_ATTACHMENT0;
2730	GLbitfield glMask = GL_COLOR_BUFFER_BIT;
2731	if (pDstSurface->f.s.surface1Flags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
2732	{
2733	/** @todo Need GL_DEPTH_STENCIL_ATTACHMENT for depth/stencil formats? */
2734	glAttachment = GL_DEPTH_ATTACHMENT;
2735	glMask = GL_DEPTH_BUFFER_BIT;
2736	}
2737
2738	/* Activate the read and draw framebuffer objects. */
2739	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, pContext->idReadFramebuffer);
2740	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2741	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pContext->idDrawFramebuffer);
2742	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2743
2744	/* Bind the source and destination objects to the right place. */
2745	GLenum textarget;
2746	if (pSrcSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2747	textarget = vmsvga3dCubemapFaceFromIndex(uSrcFace);
2748	else
2749	{
2750	/// @todo later AssertMsg(pSrcSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSrcSurface->targetGL));
2751	textarget = GL_TEXTURE_2D;
2752	}
2753	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, glAttachment, textarget,
2754	pSrcSurface->oglId.texture, uSrcMipmap);
2755	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2756
2757	if (pDstSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2758	textarget = vmsvga3dCubemapFaceFromIndex(uDstFace);
2759	else
2760	{
2761	/// @todo later AssertMsg(pDstSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pDstSurface->targetGL));
2762	textarget = GL_TEXTURE_2D;
2763	}
2764	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, glAttachment, textarget,
2765	pDstSurface->oglId.texture, uDstMipmap);
2766	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2767
2768	Log(("src conv. (%d,%d)(%d,%d); dest conv (%d,%d)(%d,%d)\n",
2769	pSrcBox->x, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y + pSrcBox->h),
2770	pSrcBox->x + pSrcBox->w, D3D_TO_OGL_Y_COORD(pSrcSurface, pSrcBox->y),
2771	pDstBox->x, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y + pDstBox->h),
2772	pDstBox->x + pDstBox->w, D3D_TO_OGL_Y_COORD(pDstSurface, pDstBox->y)));
2773
2774	pState->ext.glBlitFramebuffer(pSrcBox->x,
2775	pSrcBox->y,
2776	pSrcBox->x + pSrcBox->w, /* exclusive. */
2777	pSrcBox->y + pSrcBox->h,
2778	pDstBox->x,
2779	pDstBox->y,
2780	pDstBox->x + pDstBox->w, /* exclusive. */
2781	pDstBox->y + pDstBox->h,
2782	glMask,
2783	(enmMode == SVGA3D_STRETCH_BLT_POINT) ? GL_NEAREST : GL_LINEAR);
2784	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2785
2786	/* Reset the frame buffer association */
2787	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
2788	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
2789
2790	return VINF_SUCCESS;
2791	}
2792
2793	/**
2794	* Save texture packing parameters and loads those appropriate for the given
2795	* surface.
2796	*
2797	* @param pState The VMSVGA3D state structure.
2798	* @param pContext The active context.
2799	* @param pSurface The surface.
2800	* @param pSave Where to save stuff.
2801	*/
2802	void vmsvga3dOglSetPackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2803	PVMSVGAPACKPARAMS pSave)
2804	{
2805	RT_NOREF(pState);
2806	/*
2807	* Save (ignore errors, setting the defaults we want and avoids restore).
2808	*/
2809	pSave->iAlignment = 1;
2810	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ALIGNMENT, &pSave->iAlignment), pState, pContext);
2811	pSave->cxRow = 0;
2812	VMSVGA3D_ASSERT_GL_CALL(glGetIntegerv(GL_PACK_ROW_LENGTH, &pSave->cxRow), pState, pContext);
2813
2814	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2815	pSave->cyImage = 0;
2816	glGetIntegerv(GL_PACK_IMAGE_HEIGHT, &pSave->cyImage);
2817	Assert(pSave->cyImage == 0);
2818
2819	pSave->fSwapBytes = GL_FALSE;
2820	glGetBooleanv(GL_PACK_SWAP_BYTES, &pSave->fSwapBytes);
2821	Assert(pSave->fSwapBytes == GL_FALSE);
2822
2823	pSave->fLsbFirst = GL_FALSE;
2824	glGetBooleanv(GL_PACK_LSB_FIRST, &pSave->fLsbFirst);
2825	Assert(pSave->fLsbFirst == GL_FALSE);
2826
2827	pSave->cSkipRows = 0;
2828	glGetIntegerv(GL_PACK_SKIP_ROWS, &pSave->cSkipRows);
2829	Assert(pSave->cSkipRows == 0);
2830
2831	pSave->cSkipPixels = 0;
2832	glGetIntegerv(GL_PACK_SKIP_PIXELS, &pSave->cSkipPixels);
2833	Assert(pSave->cSkipPixels == 0);
2834
2835	pSave->cSkipImages = 0;
2836	glGetIntegerv(GL_PACK_SKIP_IMAGES, &pSave->cSkipImages);
2837	Assert(pSave->cSkipImages == 0);
2838
2839	VMSVGA3D_CLEAR_GL_ERRORS();
2840	#endif
2841
2842	/*
2843	* Setup unpack.
2844	*
2845	* Note! We use 1 as alignment here because we currently don't do any
2846	* aligning of line pitches anywhere.
2847	*/
2848	NOREF(pSurface);
2849	if (pSave->iAlignment != 1)
2850	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, 1), pState, pContext);
2851	if (pSave->cxRow != 0)
2852	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, 0), pState, pContext);
2853	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2854	if (pSave->cyImage != 0)
2855	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0), pState, pContext);
2856	if (pSave->fSwapBytes != 0)
2857	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE), pState, pContext);
2858	if (pSave->fLsbFirst != 0)
2859	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE), pState, pContext);
2860	if (pSave->cSkipRows != 0)
2861	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, 0), pState, pContext);
2862	if (pSave->cSkipPixels != 0)
2863	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, 0), pState, pContext);
2864	if (pSave->cSkipImages != 0)
2865	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, 0), pState, pContext);
2866	#endif
2867	}
2868
2869
2870	/**
2871	* Restores texture packing parameters.
2872	*
2873	* @param pState The VMSVGA3D state structure.
2874	* @param pContext The active context.
2875	* @param pSurface The surface.
2876	* @param pSave Where stuff was saved.
2877	*/
2878	void vmsvga3dOglRestorePackParams(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext, PVMSVGA3DSURFACE pSurface,
2879	PCVMSVGAPACKPARAMS pSave)
2880	{
2881	RT_NOREF(pState, pSurface);
2882	if (pSave->iAlignment != 1)
2883	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ALIGNMENT, pSave->iAlignment), pState, pContext);
2884	if (pSave->cxRow != 0)
2885	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_ROW_LENGTH, pSave->cxRow), pState, pContext);
2886	#ifdef VMSVGA3D_PARANOID_TEXTURE_PACKING
2887	if (pSave->cyImage != 0)
2888	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_IMAGE_HEIGHT, pSave->cyImage), pState, pContext);
2889	if (pSave->fSwapBytes != 0)
2890	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SWAP_BYTES, pSave->fSwapBytes), pState, pContext);
2891	if (pSave->fLsbFirst != 0)
2892	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_LSB_FIRST, pSave->fLsbFirst), pState, pContext);
2893	if (pSave->cSkipRows != 0)
2894	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_ROWS, pSave->cSkipRows), pState, pContext);
2895	if (pSave->cSkipPixels != 0)
2896	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_PIXELS, pSave->cSkipPixels), pState, pContext);
2897	if (pSave->cSkipImages != 0)
2898	VMSVGA3D_ASSERT_GL_CALL(glPixelStorei(GL_PACK_SKIP_IMAGES, pSave->cSkipImages), pState, pContext);
2899	#endif
2900	}
2901
2902
2903	/**
2904	* Backend worker for implementing SVGA_3D_CMD_SURFACE_DMA that copies one box.
2905	*
2906	* @returns Failure status code or @a rc.
2907	* @param pThis The shared VGA/VMSVGA instance data.
2908	* @param pThisCC The VGA/VMSVGA state for ring-3.
2909	* @param pState The VMSVGA3d state.
2910	* @param pSurface The host surface.
2911	* @param pMipLevel Mipmap level. The caller knows it already.
2912	* @param uHostFace The host face (valid).
2913	* @param uHostMipmap The host mipmap level (valid).
2914	* @param GuestPtr The guest pointer.
2915	* @param cbGuestPitch The guest pitch.
2916	* @param transfer The transfer direction.
2917	* @param pBox The box to copy (clipped, valid, except for guest's srcx, srcy, srcz).
2918	* @param pContext The context (for OpenGL).
2919	* @param rc The current rc for all boxes.
2920	* @param iBox The current box number (for Direct 3D).
2921	*/
2922	static DECLCALLBACK(int) vmsvga3dBackSurfaceDMACopyBox(PVGASTATE pThis, PVGASTATECC pThisCC, PVMSVGA3DSTATE pState, PVMSVGA3DSURFACE pSurface,
2923	PVMSVGA3DMIPMAPLEVEL pMipLevel, uint32_t uHostFace, uint32_t uHostMipmap,
2924	SVGAGuestPtr GuestPtr, uint32_t cbGuestPitch, SVGA3dTransferType transfer,
2925	SVGA3dCopyBox const *pBox, PVMSVGA3DCONTEXT pContext, int rc, int iBox)
2926	{
2927	RT_NOREF(iBox);
2928
2929	switch (pSurface->enmOGLResType)
2930	{
2931	case VMSVGA3D_OGLRESTYPE_TEXTURE:
2932	{
2933	uint32_t cbSurfacePitch;
2934	uint8_t *pDoubleBuffer;
2935	uint64_t offHst;
2936
2937	uint32_t const u32HostBlockX = pBox->x / pSurface->cxBlock;
2938	uint32_t const u32HostBlockY = pBox->y / pSurface->cyBlock;
2939	uint32_t const u32HostZ = pBox->z;
2940	Assert(u32HostBlockX * pSurface->cxBlock == pBox->x);
2941	Assert(u32HostBlockY * pSurface->cyBlock == pBox->y);
2942
2943	uint32_t const u32GuestBlockX = pBox->srcx / pSurface->cxBlock;
2944	uint32_t const u32GuestBlockY = pBox->srcy / pSurface->cyBlock;
2945	uint32_t const u32GuestZ = pBox->srcz / pSurface->cyBlock;
2946	Assert(u32GuestBlockX * pSurface->cxBlock == pBox->srcx);
2947	Assert(u32GuestBlockY * pSurface->cyBlock == pBox->srcy);
2948
2949	uint32_t const cBlocksX = (pBox->w + pSurface->cxBlock - 1) / pSurface->cxBlock;
2950	uint32_t const cBlocksY = (pBox->h + pSurface->cyBlock - 1) / pSurface->cyBlock;
2951	AssertMsgReturn(cBlocksX && cBlocksY, ("Empty box %dx%d\n", pBox->w, pBox->h), VERR_INTERNAL_ERROR);
2952
2953	GLenum texImageTarget;
2954	if (pSurface->targetGL == GL_TEXTURE_3D)
2955	{
2956	texImageTarget = GL_TEXTURE_3D;
2957	}
2958	else if (pSurface->targetGL == GL_TEXTURE_CUBE_MAP)
2959	{
2960	texImageTarget = vmsvga3dCubemapFaceFromIndex(uHostFace);
2961	}
2962	else
2963	{
2964	AssertMsg(pSurface->targetGL == GL_TEXTURE_2D, ("%#x\n", pSurface->targetGL));
2965	texImageTarget = GL_TEXTURE_2D;
2966	}
2967
2968	/* The buffer must be large enough to hold entire texture in the OpenGL format. */
2969	pDoubleBuffer = (uint8_t )RTMemAlloc(pSurface->cbBlockGL pMipLevel->cBlocks);
2970	AssertReturn(pDoubleBuffer, VERR_NO_MEMORY);
2971
2972	if (transfer == SVGA3D_READ_HOST_VRAM)
2973	{
2974	/* Read the entire texture to the double buffer. */
2975	GLint activeTexture;
2976
2977	/* Must bind texture to the current context in order to read it. */
2978	glGetIntegerv(pSurface->bindingGL, &activeTexture);
2979	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2980
2981	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
2982	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2983
2984	if (pSurface->fEmulated)
2985	{
2986	FormatConvReadTexture(pState, pContext, pSurface, uHostMipmap);
2987	}
2988
2989	/* Set row length and alignment of the input data. */
2990	VMSVGAPACKPARAMS SavedParams;
2991	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
2992
2993	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
2994	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
2995	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
2996	{
2997	pState->ext.glGetCompressedTexImage(texImageTarget, uHostMipmap, pDoubleBuffer);
2998	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
2999	}
3000	else
3001	{
3002	glGetTexImage(texImageTarget, uHostMipmap, pSurface->formatGL, pSurface->typeGL, pDoubleBuffer);
3003	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3004	}
3005
3006	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
3007
3008	/* Restore the old active texture. */
3009	glBindTexture(pSurface->targetGL, activeTexture);
3010	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3011
3012	offHst = u32HostBlockX * pSurface->cbBlock + u32HostBlockY * pMipLevel->cbSurfacePitch + u32HostZ * pMipLevel->cbSurfacePlane;
3013	cbSurfacePitch = pMipLevel->cbSurfacePitch;
3014	}
3015	else
3016	{
3017	/* The buffer will contain only the copied rectangle. */
3018	offHst = 0;
3019	cbSurfacePitch = cBlocksX * pSurface->cbBlock;
3020	}
3021
3022	uint64_t offGst = u32GuestBlockX * pSurface->cbBlock + u32GuestBlockY * cbGuestPitch + u32GuestZ * cbGuestPitch * pMipLevel->mipmapSize.height;
3023
3024	for (uint32_t iPlane = 0; iPlane < pBox->d; ++iPlane)
3025	{
3026	AssertBreak(offHst < UINT32_MAX);
3027	AssertBreak(offGst < UINT32_MAX);
3028
3029	rc = vmsvgaR3GmrTransfer(pThis,
3030	pThisCC,
3031	transfer,
3032	pDoubleBuffer,
3033	pMipLevel->cbSurface,
3034	(uint32_t)offHst,
3035	cbSurfacePitch,
3036	GuestPtr,
3037	(uint32_t)offGst,
3038	cbGuestPitch,
3039	cBlocksX * pSurface->cbBlock,
3040	cBlocksY);
3041	AssertRC(rc);
3042
3043	offHst += pMipLevel->cbSurfacePlane;
3044	offGst += pMipLevel->mipmapSize.height * cbGuestPitch;
3045	}
3046
3047	/* Update the opengl surface data. */
3048	if (transfer == SVGA3D_WRITE_HOST_VRAM)
3049	{
3050	GLint activeTexture = 0;
3051	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3052	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3053
3054	/* Must bind texture to the current context in order to change it. */
3055	glBindTexture(pSurface->targetGL, GLTextureId(pSurface));
3056	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3057
3058	LogFunc(("copy texture mipmap level %d (pitch %x)\n", uHostMipmap, pMipLevel->cbSurfacePitch));
3059
3060	/* Set row length and alignment of the input data. */
3061	/* We do not need to set ROW_LENGTH to w here, because the image in pDoubleBuffer is tightly packed. */
3062	VMSVGAPACKPARAMS SavedParams;
3063	vmsvga3dOglSetUnpackParams(pState, pContext, 0, 0, &SavedParams);
3064
3065	if (texImageTarget == GL_TEXTURE_3D)
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.glCompressedTexSubImage3D(texImageTarget,
3072	uHostMipmap,
3073	pBox->x,
3074	pBox->y,
3075	pBox->z,
3076	pBox->w,
3077	pBox->h,
3078	pBox->d,
3079	pSurface->internalFormatGL,
3080	cbSurfacePitch * cBlocksY * pBox->d,
3081	pDoubleBuffer);
3082	}
3083	else
3084	{
3085	pState->ext.glTexSubImage3D(texImageTarget,
3086	uHostMipmap,
3087	u32HostBlockX,
3088	u32HostBlockY,
3089	pBox->z,
3090	cBlocksX,
3091	cBlocksY,
3092	pBox->d,
3093	pSurface->formatGL,
3094	pSurface->typeGL,
3095	pDoubleBuffer);
3096	}
3097	}
3098	else
3099	{
3100	if ( pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
3101	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
3102	\|\| pSurface->internalFormatGL == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
3103	{
3104	pState->ext.glCompressedTexSubImage2D(texImageTarget,
3105	uHostMipmap,
3106	pBox->x,
3107	pBox->y,
3108	pBox->w,
3109	pBox->h,
3110	pSurface->internalFormatGL,
3111	cbSurfacePitch * cBlocksY,
3112	pDoubleBuffer);
3113	}
3114	else
3115	{
3116	glTexSubImage2D(texImageTarget,
3117	uHostMipmap,
3118	u32HostBlockX,
3119	u32HostBlockY,
3120	cBlocksX,
3121	cBlocksY,
3122	pSurface->formatGL,
3123	pSurface->typeGL,
3124	pDoubleBuffer);
3125	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3126
3127	if (pSurface->fEmulated)
3128	{
3129	/* Convert the texture to the actual texture if necessary */
3130	FormatConvUpdateTexture(pState, pContext, pSurface, uHostMipmap);
3131	}
3132	}
3133	}
3134	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3135
3136	/* Restore old values. */
3137	vmsvga3dOglRestoreUnpackParams(pState, pContext, &SavedParams);
3138
3139	/* Restore the old active texture. */
3140	glBindTexture(pSurface->targetGL, activeTexture);
3141	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
3142	}
3143
3144	Log4(("first line:\n%.Rhxd\n", cBlocksX pSurface->cbBlock, pDoubleBuffer));
3145
3146	/* Free the double buffer. */
3147	RTMemFree(pDoubleBuffer);
3148	break;
3149	}
3150
3151	case VMSVGA3D_OGLRESTYPE_BUFFER:
3152	{
3153	/* Buffers are uncompressed. */
3154	AssertReturn(pSurface->cxBlock == 1 && pSurface->cyBlock == 1, VERR_INTERNAL_ERROR);
3155
3156	/* Caller already clipped pBox and buffers are 1-dimensional. */
3157	Assert(pBox->y == 0 && pBox->h == 1 && pBox->z == 0 && pBox->d == 1);
3158
3159	VMSVGA3D_CLEAR_GL_ERRORS();
3160	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
3161	if (VMSVGA3D_GL_IS_SUCCESS(pContext))
3162	{
3163	GLenum enmGlTransfer = (transfer == SVGA3D_READ_HOST_VRAM) ? GL_READ_ONLY : GL_WRITE_ONLY;
3164	uint8_t pbData = (uint8_t )pState->ext.glMapBuffer(GL_ARRAY_BUFFER, enmGlTransfer);
3165	if (RT_LIKELY(pbData != NULL))
3166	{
3167	#if defined(VBOX_STRICT) && defined(RT_OS_DARWIN)
3168	GLint cbStrictBufSize;
3169	glGetBufferParameteriv(GL_ARRAY_BUFFER, GL_BUFFER_SIZE, &cbStrictBufSize);
3170	Assert(VMSVGA3D_GL_IS_SUCCESS(pContext));
3171	AssertMsg(cbStrictBufSize >= (int32_t)pMipLevel->cbSurface,
3172	("cbStrictBufSize=%#x cbSurface=%#x pContext->id=%#x\n", (uint32_t)cbStrictBufSize, pMipLevel->cbSurface, pContext->id));
3173	#endif
3174	Log(("Lock %s memory for rectangle (%d,%d)(%d,%d)\n",
3175	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_VERTEXBUFFER ? "vertex" :
3176	(pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK) == SVGA3D_SURFACE_HINT_INDEXBUFFER ? "index" : "buffer",
3177	pBox->x, pBox->y, pBox->x + pBox->w, pBox->y + pBox->h));
3178
3179	/* The caller already copied the data to the pMipLevel->pSurfaceData buffer, see VMSVGA3DSURFACE_NEEDS_DATA. */
3180	uint32_t const offHst = pBox->x * pSurface->cbBlock;
3181	uint32_t const cbWidth = pBox->w * pSurface->cbBlock;
3182
3183	memcpy(pbData + offHst, (uint8_t *)pMipLevel->pSurfaceData + offHst, cbWidth);
3184
3185	Log4(("Buffer updated at [0x%x;0x%x):\n%.Rhxd\n", offHst, offHst + cbWidth, cbWidth, (uint8_t )pbData + offHst));
3186
3187	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
3188	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3189	}
3190	else
3191	VMSVGA3D_GL_GET_AND_COMPLAIN(pState, pContext, ("glMapBuffer(GL_ARRAY_BUFFER, %#x) -> NULL\n", enmGlTransfer));
3192	}
3193	else
3194	VMSVGA3D_GL_COMPLAIN(pState, pContext, ("glBindBuffer(GL_ARRAY_BUFFER, %#x)\n", pSurface->oglId.buffer));
3195	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
3196	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3197	break;
3198	}
3199
3200	default:
3201	AssertFailed();
3202	break;
3203	}
3204
3205	return rc;
3206	}
3207
3208	static DECLCALLBACK(int) vmsvga3dBackGenerateMipmaps(PVGASTATECC pThisCC, uint32_t sid, SVGA3dTextureFilter filter)
3209	{
3210	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3211	PVMSVGA3DSURFACE pSurface;
3212	int rc = VINF_SUCCESS;
3213	PVMSVGA3DCONTEXT pContext;
3214	uint32_t cid;
3215	GLint activeTexture = 0;
3216
3217	AssertReturn(pState, VERR_NO_MEMORY);
3218
3219	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
3220	AssertRCReturn(rc, rc);
3221
3222	Assert(filter != SVGA3D_TEX_FILTER_FLATCUBIC);
3223	Assert(filter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
3224	pSurface->autogenFilter = filter;
3225
3226	LogFunc(("sid=%u filter=%d\n", sid, filter));
3227
3228	cid = SVGA3D_INVALID_ID;
3229	pContext = &pState->SharedCtx;
3230	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3231
3232	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
3233	{
3234	/* Unknown surface type; turn it into a texture. */
3235	LogFunc(("unknown src surface id=%x type=%d format=%d -> create texture\n", sid, pSurface->f.s.surface1Flags, pSurface->format));
3236	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
3237	AssertRCReturn(rc, rc);
3238	}
3239	else
3240	{
3241	/** @todo new filter */
3242	AssertFailed();
3243	}
3244
3245	glGetIntegerv(pSurface->bindingGL, &activeTexture);
3246	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3247
3248	/* Must bind texture to the current context in order to change it. */
3249	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
3250	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3251
3252	/* Generate the mip maps. */
3253	pState->ext.glGenerateMipmap(pSurface->targetGL);
3254	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3255
3256	/* Restore the old texture. */
3257	glBindTexture(pSurface->targetGL, activeTexture);
3258	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3259
3260	return VINF_SUCCESS;
3261	}
3262
3263
3264	#ifdef RT_OS_LINUX
3265	/**
3266	* X11 event handling thread.
3267	*
3268	* @returns VINF_SUCCESS (ignored)
3269	* @param hThreadSelf thread handle
3270	* @param pvUser pointer to pState structure
3271	*/
3272	DECLCALLBACK(int) vmsvga3dXEventThread(RTTHREAD hThreadSelf, void *pvUser)
3273	{
3274	RT_NOREF(hThreadSelf);
3275	PVMSVGA3DSTATE pState = (PVMSVGA3DSTATE)pvUser;
3276	while (!pState->bTerminate)
3277	{
3278	while (XPending(pState->display) > 0)
3279	{
3280	XEvent event;
3281	XNextEvent(pState->display, &event);
3282
3283	switch (event.type)
3284	{
3285	default:
3286	break;
3287	}
3288	}
3289	/* sleep for 16ms to not burn too many cycles */
3290	RTThreadSleep(16);
3291	}
3292	return VINF_SUCCESS;
3293	}
3294	#endif // RT_OS_LINUX
3295
3296
3297	/**
3298	* Create a new 3d context
3299	*
3300	* @returns VBox status code.
3301	* @param pThisCC The VGA/VMSVGA state for ring-3.
3302	* @param cid Context id
3303	* @param fFlags VMSVGA3D_DEF_CTX_F_XXX.
3304	*/
3305	int vmsvga3dContextDefineOgl(PVGASTATECC pThisCC, uint32_t cid, uint32_t fFlags)
3306	{
3307	int rc;
3308	PVMSVGA3DCONTEXT pContext;
3309	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3310
3311	AssertReturn(pState, VERR_NO_MEMORY);
3312	AssertReturn( cid < SVGA3D_MAX_CONTEXT_IDS
3313	\|\| (cid == VMSVGA3D_SHARED_CTX_ID && (fFlags & VMSVGA3D_DEF_CTX_F_SHARED_CTX)), VERR_INVALID_PARAMETER);
3314	#if !defined(VBOX_VMSVGA3D_DUAL_OPENGL_PROFILE) \|\| !(defined(RT_OS_DARWIN))
3315	AssertReturn(!(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE), VERR_INTERNAL_ERROR_3);
3316	#endif
3317
3318	Log(("vmsvga3dContextDefine id %x\n", cid));
3319
3320	if (cid == VMSVGA3D_SHARED_CTX_ID)
3321	pContext = &pState->SharedCtx;
3322	else
3323	{
3324	if (cid >= pState->cContexts)
3325	{
3326	/* Grow the array. */
3327	uint32_t cNew = RT_ALIGN(cid + 15, 16);
3328	void pvNew = RTMemRealloc(pState->papContexts, sizeof(pState->papContexts[0]) cNew);
3329	AssertReturn(pvNew, VERR_NO_MEMORY);
3330	pState->papContexts = (PVMSVGA3DCONTEXT *)pvNew;
3331	while (pState->cContexts < cNew)
3332	{
3333	pContext = (PVMSVGA3DCONTEXT)RTMemAllocZ(sizeof(*pContext));
3334	AssertReturn(pContext, VERR_NO_MEMORY);
3335	pContext->id = SVGA3D_INVALID_ID;
3336	pState->papContexts[pState->cContexts++] = pContext;
3337	}
3338	}
3339	/* If one already exists with this id, then destroy it now. */
3340	if (pState->papContexts[cid]->id != SVGA3D_INVALID_ID)
3341	vmsvga3dBackContextDestroy(pThisCC, cid);
3342
3343	pContext = pState->papContexts[cid];
3344	}
3345
3346	/*
3347	* Find or create the shared context if needed (necessary for sharing e.g. textures between contexts).
3348	*/
3349	PVMSVGA3DCONTEXT pSharedCtx = NULL;
3350	if (!(fFlags & (VMSVGA3D_DEF_CTX_F_INIT \| VMSVGA3D_DEF_CTX_F_SHARED_CTX)))
3351	{
3352	pSharedCtx = &pState->SharedCtx;
3353	if (pSharedCtx->id != VMSVGA3D_SHARED_CTX_ID)
3354	{
3355	rc = vmsvga3dContextDefineOgl(pThisCC, VMSVGA3D_SHARED_CTX_ID, VMSVGA3D_DEF_CTX_F_SHARED_CTX);
3356	AssertLogRelRCReturn(rc, rc);
3357
3358	/* Create resources which use the shared context. */
3359	vmsvga3dOnSharedContextDefine(pState);
3360	}
3361	}
3362
3363	/*
3364	* Initialize the context.
3365	*/
3366	memset(pContext, 0, sizeof(*pContext));
3367	pContext->id = cid;
3368	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); i++)
3369	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
3370
3371	pContext->state.shidVertex = SVGA3D_INVALID_ID;
3372	pContext->state.shidPixel = SVGA3D_INVALID_ID;
3373	pContext->idFramebuffer = OPENGL_INVALID_ID;
3374	pContext->idReadFramebuffer = OPENGL_INVALID_ID;
3375	pContext->idDrawFramebuffer = OPENGL_INVALID_ID;
3376
3377	rc = ShaderContextCreate(&pContext->pShaderContext);
3378	AssertRCReturn(rc, rc);
3379
3380	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); i++)
3381	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
3382
3383	#ifdef RT_OS_WINDOWS
3384	/* Create a context window with minimal 4x4 size. We will never use the swapchain
3385	* to present the rendered image. Rendered images from the guest will be copied to
3386	* the VMSVGA SCREEN object, which can be either an offscreen render target or
3387	* system memory in the guest VRAM.
3388	*/
3389	rc = vmsvga3dContextWindowCreate(pState->hInstance, pState->pWindowThread, pState->WndRequestSem, &pContext->hwnd);
3390	AssertRCReturn(rc, rc);
3391
3392	pContext->hdc = GetDC(pContext->hwnd);
3393	AssertMsgReturn(pContext->hdc, ("GetDC %x failed with %d\n", pContext->hwnd, GetLastError()), VERR_INTERNAL_ERROR);
3394
3395	PIXELFORMATDESCRIPTOR pfd = {
3396	sizeof(PIXELFORMATDESCRIPTOR), /* size of this pfd */
3397	1, /* version number */
3398	PFD_DRAW_TO_WINDOW \| /* support window */
3399	PFD_SUPPORT_OPENGL, /* support OpenGL */
3400	PFD_TYPE_RGBA, /* RGBA type */
3401	24, /* 24-bit color depth */
3402	0, 0, 0, 0, 0, 0, /* color bits ignored */
3403	8, /* alpha buffer */
3404	0, /* shift bit ignored */
3405	0, /* no accumulation buffer */
3406	0, 0, 0, 0, /* accum bits ignored */
3407	16, /* set depth buffer */
3408	16, /* set stencil buffer */
3409	0, /* no auxiliary buffer */
3410	PFD_MAIN_PLANE, /* main layer */
3411	0, /* reserved */
3412	0, 0, 0 /* layer masks ignored */
3413	};
3414	int pixelFormat;
3415	BOOL ret;
3416
3417	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3418	/** @todo is this really necessary?? */
3419	pixelFormat = ChoosePixelFormat(pContext->hdc, &pfd);
3420	AssertMsgReturn(pixelFormat != 0, ("ChoosePixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3421
3422	ret = SetPixelFormat(pContext->hdc, pixelFormat, &pfd);
3423	AssertMsgReturn(ret == TRUE, ("SetPixelFormat failed with %d\n", GetLastError()), VERR_INTERNAL_ERROR);
3424
3425	pContext->hglrc = wglCreateContext(pContext->hdc);
3426	AssertMsgReturn(pContext->hglrc, ("wglCreateContext %x failed with %d\n", pContext->hdc, GetLastError()), VERR_INTERNAL_ERROR);
3427
3428	if (pSharedCtx)
3429	{
3430	ret = wglShareLists(pSharedCtx->hglrc, pContext->hglrc);
3431	AssertMsg(ret == TRUE, ("wglShareLists(%p, %p) failed with %d\n", pSharedCtx->hglrc, pContext->hglrc, GetLastError()));
3432	}
3433
3434	#elif defined(RT_OS_DARWIN)
3435	pContext->fOtherProfile = RT_BOOL(fFlags & VMSVGA3D_DEF_CTX_F_OTHER_PROFILE);
3436
3437	NativeNSOpenGLContextRef pShareContext = pSharedCtx ? pSharedCtx->cocoaContext : NULL;
3438	vmsvga3dCocoaCreateViewAndContext(&pContext->cocoaView, &pContext->cocoaContext,
3439	NULL,
3440	4, 4,
3441	pShareContext, pContext->fOtherProfile);
3442
3443	#else
3444	if (pState->display == NULL)
3445	{
3446	/* get an X display and make sure we have glX 1.3 */
3447	pState->display = XOpenDisplay(0);
3448	AssertLogRelMsgReturn(pState->display, ("XOpenDisplay failed"), VERR_INTERNAL_ERROR);
3449	int glxMajor, glxMinor;
3450	Bool ret = glXQueryVersion(pState->display, &glxMajor, &glxMinor);
3451	AssertLogRelMsgReturn(ret && glxMajor == 1 && glxMinor >= 3, ("glX >=1.3 not present"), VERR_INTERNAL_ERROR);
3452	/* start our X event handling thread */
3453	rc = RTThreadCreate(&pState->pWindowThread, vmsvga3dXEventThread, pState, 0, RTTHREADTYPE_GUI, RTTHREADFLAGS_WAITABLE, "VMSVGA3DXEVENT");
3454	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("Async IO Thread creation for 3d window handling failed rc=%Rrc\n", rc), rc);
3455	}
3456
3457	Window defaultRootWindow = XDefaultRootWindow(pState->display);
3458	/* Create a small 4x4 window required for GL context. */
3459	int attrib[] =
3460	{
3461	GLX_RGBA,
3462	GLX_RED_SIZE, 1,
3463	GLX_GREEN_SIZE, 1,
3464	GLX_BLUE_SIZE, 1,
3465	//GLX_ALPHA_SIZE, 1, this flips the bbos screen
3466	GLX_DOUBLEBUFFER,
3467	None
3468	};
3469	XVisualInfo *vi = glXChooseVisual(pState->display, DefaultScreen(pState->display), attrib);
3470	AssertLogRelMsgReturn(vi, ("glXChooseVisual failed"), VERR_INTERNAL_ERROR);
3471	XSetWindowAttributes swa;
3472	swa.colormap = XCreateColormap(pState->display, defaultRootWindow, vi->visual, AllocNone);
3473	AssertLogRelMsgReturn(swa.colormap, ("XCreateColormap failed"), VERR_INTERNAL_ERROR);
3474	swa.border_pixel = 0;
3475	swa.background_pixel = 0;
3476	swa.event_mask = StructureNotifyMask;
3477	unsigned long flags = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask;
3478	pContext->window = XCreateWindow(pState->display, defaultRootWindow,
3479	0, 0, 4, 4,
3480	0, vi->depth, InputOutput,
3481	vi->visual, flags, &swa);
3482	AssertLogRelMsgReturn(pContext->window, ("XCreateWindow failed"), VERR_INTERNAL_ERROR);
3483
3484	/* The window is hidden by default and never mapped, because we only render offscreen and never present to it. */
3485
3486	GLXContext shareContext = pSharedCtx ? pSharedCtx->glxContext : NULL;
3487	pContext->glxContext = glXCreateContext(pState->display, vi, shareContext, GL_TRUE);
3488	XFree(vi);
3489	AssertLogRelMsgReturn(pContext->glxContext, ("glXCreateContext failed"), VERR_INTERNAL_ERROR);
3490	#endif
3491
3492	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3493
3494	/* NULL during the first PowerOn call. */
3495	if (pState->ext.glGenFramebuffers)
3496	{
3497	/* Create a framebuffer object for this context. */
3498	pState->ext.glGenFramebuffers(1, &pContext->idFramebuffer);
3499	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3500
3501	/* Bind the object to the framebuffer target. */
3502	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, pContext->idFramebuffer);
3503	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3504
3505	/* Create read and draw framebuffer objects for this context. */
3506	pState->ext.glGenFramebuffers(1, &pContext->idReadFramebuffer);
3507	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3508
3509	pState->ext.glGenFramebuffers(1, &pContext->idDrawFramebuffer);
3510	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
3511
3512	}
3513	#if 0
3514	/** @todo move to shader lib!!! */
3515	/* Clear the screen */
3516	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
3517
3518	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
3519	glClearIndex(0);
3520	glClearDepth(1);
3521	glClearStencil(0xffff);
3522	glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
3523	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
3524	glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
3525	if (pState->ext.glProvokingVertex)
3526	pState->ext.glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
3527	/** @todo move to shader lib!!! */
3528	#endif
3529	return VINF_SUCCESS;
3530	}
3531
3532	#if defined(RT_OS_LINUX)
3533	/*
3534	* HW accelerated graphics output.
3535	*/
3536
3537	/**
3538	* VMSVGA3d screen data.
3539	*
3540	* Allocated on the heap and pointed to by VMSVGASCREENOBJECT::pHwScreen.
3541	*/
3542	typedef struct VMSVGAHWSCREEN
3543	{
3544	/* OpenGL context, which is used for the screen updates. */
3545	GLXContext glxctx;
3546
3547	/* The overlay window. */
3548	Window xwindow;
3549
3550	/* The RGBA texture which hold the screen content. */
3551	GLuint idScreenTexture;
3552
3553	/* Read and draw framebuffer objects for copying a surface to the screen texture. */
3554	GLuint idReadFramebuffer;
3555	GLuint idDrawFramebuffer;
3556	} VMSVGAHWSCREEN;
3557
3558	/* Send a notification to the UI. */
3559	#if 0 /* Unused */
3560	static int vmsvga3dDrvNotifyHwScreen(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification,
3561	uint32_t idScreen, Pixmap pixmap, void *pvData, size_t cbData)
3562	{
3563	uint8_t au8Buffer[128];
3564	AssertLogRelMsgReturn(cbData <= sizeof(au8Buffer) - sizeof(VBOX3DNOTIFY),
3565	("cbData %zu", cbData),
3566	VERR_INVALID_PARAMETER);
3567
3568	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3569	p->enmNotification = enmNotification;
3570	p->iDisplay = idScreen;
3571	p->u32Reserved = 0;
3572	p->cbData = cbData + sizeof(uint64_t);
3573	/* au8Data consists of a 64 bit pixmap handle followed by notification specific data. */
3574	AssertCompile(sizeof(pixmap) <= sizeof(uint64_t));
3575	(uint64_t )&p->au8Data[0] = (uint64_t)pixmap;
3576	memcpy(&p->au8Data[sizeof(uint64_t)], pvData, cbData);
3577
3578	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3579	return rc;
3580	}
3581	#endif /* Unused */
3582
3583	static void vmsvga3dDrvNotifyHwOverlay(PVGASTATECC pThisCC, VBOX3D_NOTIFY_TYPE enmNotification, uint32_t idScreen)
3584	{
3585	uint8_t au8Buffer[128];
3586	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3587	p->enmNotification = enmNotification;
3588	p->iDisplay = idScreen;
3589	p->u32Reserved = 0;
3590	p->cbData = sizeof(uint64_t);
3591	(uint64_t )&p->au8Data[0] = 0;
3592
3593	pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3594	}
3595
3596	/* Get X Window handle of the UI Framebuffer window. */
3597	static int vmsvga3dDrvQueryWindow(PVGASTATECC pThisCC, uint32_t idScreen, Window *pWindow)
3598	{
3599	uint8_t au8Buffer[128];
3600	VBOX3DNOTIFY p = (VBOX3DNOTIFY )&au8Buffer[0];
3601	p->enmNotification = VBOX3D_NOTIFY_TYPE_HW_OVERLAY_GET_ID;
3602	p->iDisplay = idScreen;
3603	p->u32Reserved = 0;
3604	p->cbData = sizeof(uint64_t);
3605	(uint64_t )&p->au8Data[0] = 0;
3606
3607	int rc = pThisCC->pDrv->pfn3DNotifyProcess(pThisCC->pDrv, p);
3608	if (RT_SUCCESS(rc))
3609	{
3610	pWindow = (Window)(uint64_t *)&p->au8Data[0];
3611	}
3612	return rc;
3613	}
3614
3615	static int ctxErrorHandler(Display dpy, XErrorEvent ev)
3616	{
3617	RT_NOREF(dpy);
3618	LogRel4(("VMSVGA: XError %d\n", (int)ev->error_code));
3619	return 0;
3620	}
3621
3622	/* Create an overlay X window for the HW accelerated screen. */
3623	static int vmsvga3dHwScreenCreate(PVMSVGA3DSTATE pState, Window parentWindow, unsigned int cWidth, unsigned int cHeight, VMSVGAHWSCREEN *p)
3624	{
3625	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3626
3627	int rc = VINF_SUCCESS;
3628
3629	XWindowAttributes parentAttr;
3630	if (XGetWindowAttributes(pState->display, parentWindow, &parentAttr) == 0)
3631	return VERR_INVALID_PARAMETER;
3632
3633	int const idxParentScreen = XScreenNumberOfScreen(parentAttr.screen);
3634
3635	/*
3636	* Create a new GL context, which will be used for copying to the screen.
3637	*/
3638
3639	/* FBConfig attributes for the overlay window. */
3640	static int const aConfigAttribList[] =
3641	{
3642	GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, // Must support GLX windows
3643	GLX_DOUBLEBUFFER, False, // Double buffering had a much lower performance.
3644	GLX_RED_SIZE, 8, // True color RGB with 8 bits per channel.
3645	GLX_GREEN_SIZE, 8,
3646	GLX_BLUE_SIZE, 8,
3647	GLX_ALPHA_SIZE, 8,
3648	GLX_STENCIL_SIZE, 0, // No stencil buffer
3649	GLX_DEPTH_SIZE, 0, // No depth buffer
3650	None
3651	};
3652
3653	/* Find a suitable FB config. */
3654	int cConfigs = 0;
3655	GLXFBConfig *paConfigs = glXChooseFBConfig(pState->display, idxParentScreen, aConfigAttribList, &cConfigs);
3656	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: paConfigs %p cConfigs %d\n", (void *)paConfigs, cConfigs));
3657	if (paConfigs)
3658	{
3659	XVisualInfo *vi = NULL;
3660	int i = 0;
3661	for (; i < cConfigs; ++i)
3662	{
3663	/* Use XFree to free the data returned in the previous iteration of this loop. */
3664	if (vi)
3665	XFree(vi);
3666
3667	vi = glXGetVisualFromFBConfig(pState->display, paConfigs[i]);
3668	if (!vi)
3669	continue;
3670
3671	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: %p vid %lu screen %d depth %d r %lu g %lu b %lu clrmap %d bitsperrgb %d\n",
3672	(void *)vi->visual, vi->visualid, vi->screen, vi->depth,
3673	vi->red_mask, vi->green_mask, vi->blue_mask, vi->colormap_size, vi->bits_per_rgb));
3674
3675	/* Same screen as the parent window. */
3676	if (vi->screen != idxParentScreen)
3677	continue;
3678
3679	/* Search for 32 bits per pixel. */
3680	if (vi->depth != 32)
3681	continue;
3682
3683	/* 8 bits per color component is enough. */
3684	if (vi->bits_per_rgb != 8)
3685	continue;
3686
3687	/* Render to pixmap. */
3688	int value = 0;
3689	glXGetFBConfigAttrib(pState->display, paConfigs[i], GLX_DRAWABLE_TYPE, &value);
3690	if (!(value & GLX_WINDOW_BIT))
3691	continue;
3692
3693	/* This FB config can be used. */
3694	break;
3695	}
3696
3697	if (i < cConfigs)
3698	{
3699	/* Found a suitable config with index i. */
3700
3701	/* Create an overlay window. */
3702	XSetWindowAttributes swa;
3703	RT_ZERO(swa);
3704
3705	swa.colormap = XCreateColormap(pState->display, parentWindow, vi->visual, AllocNone);
3706	AssertLogRelMsg(swa.colormap, ("XCreateColormap failed"));
3707	swa.border_pixel = 0;
3708	swa.background_pixel = 0;
3709	swa.event_mask = StructureNotifyMask;
3710	swa.override_redirect = 1;
3711	unsigned long const swaAttrs = CWBorderPixel \| CWBackPixel \| CWColormap \| CWEventMask \| CWOverrideRedirect;
3712	p->xwindow = XCreateWindow(pState->display, parentWindow,
3713	0, 0, cWidth, cHeight, 0, vi->depth, InputOutput,
3714	vi->visual, swaAttrs, &swa);
3715	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->xwindow %ld\n", p->xwindow));
3716	if (p->xwindow)
3717	{
3718
3719	p->glxctx = glXCreateContext(pState->display, vi, pState->SharedCtx.glxContext, GL_TRUE);
3720	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: p->glxctx %p\n", (void *)p->glxctx));
3721	if (p->glxctx)
3722	{
3723	XMapWindow(pState->display, p->xwindow);
3724	}
3725	else
3726	{
3727	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: glXCreateContext failed\n"));
3728	rc = VERR_NOT_SUPPORTED;
3729	}
3730	}
3731	else
3732	{
3733	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: XCreateWindow failed\n"));
3734	rc = VERR_NOT_SUPPORTED;
3735	}
3736
3737	XSync(pState->display, False);
3738	}
3739	else
3740	{
3741	/* A suitable config is not found. */
3742	LogRel4(("VMSVGA: vmsvga3dHwScreenCreate: no FBConfig\n"));
3743	rc = VERR_NOT_SUPPORTED;
3744	}
3745
3746	if (vi)
3747	XFree(vi);
3748
3749	/* "Use XFree to free the memory returned by glXChooseFBConfig." */
3750	XFree(paConfigs);
3751	}
3752	else
3753	{
3754	/* glXChooseFBConfig failed. */
3755	rc = VERR_NOT_SUPPORTED;
3756	}
3757
3758	XSetErrorHandler(oldHandler);
3759	return rc;
3760	}
3761
3762	/* Destroy a HW accelerated screen. */
3763	static void vmsvga3dHwScreenDestroy(PVMSVGA3DSTATE pState, VMSVGAHWSCREEN *p)
3764	{
3765	if (p)
3766	{
3767	LogRel4(("VMSVGA: vmsvga3dHwScreenDestroy: p->xwindow %ld, ctx %p\n", p->xwindow, (void *)p->glxctx));
3768	if (p->glxctx)
3769	{
3770	/* GLX context is changed here, so other code has to set the appropriate context again. */
3771	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3772
3773	glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3774
3775	/* Clean up OpenGL. */
3776	if (p->idReadFramebuffer != OPENGL_INVALID_ID)
3777	pState->ext.glDeleteFramebuffers(1, &p->idReadFramebuffer);
3778	if (p->idDrawFramebuffer != OPENGL_INVALID_ID)
3779	pState->ext.glDeleteFramebuffers(1, &p->idDrawFramebuffer);
3780	if (p->idScreenTexture != OPENGL_INVALID_ID)
3781	glDeleteTextures(1, &p->idScreenTexture);
3782
3783	glXMakeCurrent(pState->display, None, NULL);
3784
3785	glXDestroyContext(pState->display, p->glxctx);
3786	}
3787
3788	if (p->xwindow)
3789	XDestroyWindow(pState->display, p->xwindow);
3790
3791	RT_ZERO(*p);
3792	}
3793	}
3794
3795	#define GLCHECK() \
3796	do { \
3797	int glErr = glGetError(); \
3798	if (glErr != GL_NO_ERROR) LogRel4(("VMSVGA: GL error 0x%x @%d\n", glErr, __LINE__)); \
3799	} while(0)
3800
3801	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3802	{
3803	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: screen %u\n", pScreen->idScreen));
3804
3805	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3806	AssertReturn(pState, VERR_NOT_SUPPORTED);
3807
3808	if (!pThis->svga.f3DOverlayEnabled)
3809	return VERR_NOT_SUPPORTED;
3810
3811	Assert(pScreen->pHwScreen == NULL);
3812
3813	VMSVGAHWSCREEN p = (VMSVGAHWSCREEN )RTMemAllocZ(sizeof(VMSVGAHWSCREEN));
3814	AssertPtrReturn(p, VERR_NO_MEMORY);
3815
3816	/* Query the parent window ID from the UI framebuffer.
3817	* If it is there then
3818	* the device will create a texture for the screen content and an overlay window to present the screen content.
3819	* otherwise
3820	* the device will use the guest VRAM system memory for the screen content.
3821	*/
3822	Window parentWindow;
3823	int rc = vmsvga3dDrvQueryWindow(pThisCC, pScreen->idScreen, &parentWindow);
3824	if (RT_SUCCESS(rc))
3825	{
3826	/* Create the hardware accelerated screen. */
3827	rc = vmsvga3dHwScreenCreate(pState, parentWindow, pScreen->cWidth, pScreen->cHeight, p);
3828	if (RT_SUCCESS(rc))
3829	{
3830	/*
3831	* Setup the OpenGL context of the screen. The context will be used to draw on the screen.
3832	*/
3833
3834	/* GLX context is changed here, so other code has to set the appropriate context again. */
3835	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3836
3837	Bool const fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3838	if (fSuccess)
3839	{
3840	/* Set GL state. */
3841	glClearColor(0, 0, 0, 1);
3842	glEnable(GL_TEXTURE_2D);
3843	glDisable(GL_DEPTH_TEST);
3844	glDisable(GL_CULL_FACE);
3845
3846	/* The RGBA texture which hold the screen content. */
3847	glGenTextures(1, &p->idScreenTexture); GLCHECK();
3848	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3849	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); GLCHECK();
3850	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); GLCHECK();
3851	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, pScreen->cWidth, pScreen->cHeight, 0,
3852	GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL); GLCHECK();
3853
3854	/* Create read and draw framebuffer objects for this screen. */
3855	pState->ext.glGenFramebuffers(1, &p->idReadFramebuffer); GLCHECK();
3856	pState->ext.glGenFramebuffers(1, &p->idDrawFramebuffer); GLCHECK();
3857
3858	/* Work in screen coordinates. */
3859	glMatrixMode(GL_MODELVIEW);
3860	glLoadIdentity();
3861	glOrtho(0, pScreen->cWidth, 0, pScreen->cHeight, -1, 1);
3862	glMatrixMode(GL_PROJECTION);
3863	glLoadIdentity();
3864
3865	/* Clear the texture. */
3866	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3867	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3868	p->idScreenTexture, 0); GLCHECK();
3869
3870	glClear(GL_COLOR_BUFFER_BIT);
3871
3872	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); GLCHECK();
3873
3874	glXMakeCurrent(pState->display, None, NULL);
3875
3876	XSync(pState->display, False);
3877
3878	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_CREATED, pScreen->idScreen);
3879	}
3880	else
3881	{
3882	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: failed to set current context\n"));
3883	rc = VERR_NOT_SUPPORTED;
3884	}
3885	}
3886	}
3887	else
3888	{
3889	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: no framebuffer\n"));
3890	}
3891
3892	if (RT_SUCCESS(rc))
3893	{
3894	LogRel(("VMSVGA: Using HW accelerated screen %u\n", pScreen->idScreen));
3895	pScreen->pHwScreen = p;
3896	}
3897	else
3898	{
3899	LogRel4(("VMSVGA: vmsvga3dBackDefineScreen: %Rrc\n", rc));
3900	vmsvga3dHwScreenDestroy(pState, p);
3901	RTMemFree(p);
3902	}
3903
3904	return rc;
3905	}
3906
3907	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
3908	{
3909	LogRel4(("VMSVGA: vmsvga3dBackDestroyScreen: screen %u\n", pScreen->idScreen));
3910
3911	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3912	AssertReturn(pState, VERR_NOT_SUPPORTED);
3913
3914	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3915
3916	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3917	if (p)
3918	{
3919	pScreen->pHwScreen = NULL;
3920
3921	vmsvga3dDrvNotifyHwOverlay(pThisCC, VBOX3D_NOTIFY_TYPE_HW_OVERLAY_DESTROYED, pScreen->idScreen);
3922
3923	vmsvga3dHwScreenDestroy(pState, p);
3924	RTMemFree(p);
3925	}
3926
3927	XSetErrorHandler(oldHandler);
3928
3929	return VINF_SUCCESS;
3930	}
3931
3932	/* Blit a surface to the GLX pixmap. */
3933	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
3934	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
3935	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
3936	{
3937	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
3938	AssertReturn(pState, VERR_NOT_SUPPORTED);
3939
3940	VMSVGAHWSCREEN *p = pScreen->pHwScreen;
3941	AssertReturn(p, VERR_NOT_SUPPORTED);
3942
3943	PVMSVGA3DSURFACE pSurface;
3944	int rc = vmsvga3dSurfaceFromSid(pState, srcImage.sid, &pSurface);
3945	AssertRCReturn(rc, rc);
3946
3947	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
3948	{
3949	LogFunc(("src sid=%u flags=0x%x format=%d -> create texture\n", srcImage.sid, pSurface->f.s.surface1Flags, pSurface->format));
3950	rc = vmsvga3dBackCreateTexture(pThisCC, &pState->SharedCtx, VMSVGA3D_SHARED_CTX_ID, pSurface);
3951	AssertRCReturn(rc, rc);
3952	}
3953
3954	AssertReturn(pSurface->enmOGLResType == VMSVGA3D_OGLRESTYPE_TEXTURE, VERR_NOT_SUPPORTED);
3955
3956	PVMSVGA3DMIPMAPLEVEL pMipLevel;
3957	rc = vmsvga3dMipmapLevel(pSurface, srcImage.face, srcImage.mipmap, &pMipLevel);
3958	AssertRCReturn(rc, rc);
3959
3960	/** @todo Implement. */
3961	RT_NOREF(cRects, paRects);
3962
3963	/* GLX context is changed here, so other code has to set appropriate context again. */
3964	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
3965
3966	int (oldHandler)(Display, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler);
3967
3968	Bool fSuccess = glXMakeCurrent(pState->display, p->xwindow, p->glxctx);
3969	if (fSuccess)
3970	{
3971	/* Activate the read and draw framebuffer objects. */
3972	pState->ext.glBindFramebuffer(GL_READ_FRAMEBUFFER, p->idReadFramebuffer); GLCHECK();
3973	pState->ext.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, p->idDrawFramebuffer); GLCHECK();
3974
3975	/* Bind the source and destination objects to the right place. */
3976	pState->ext.glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3977	pSurface->oglId.texture, 0); GLCHECK();
3978	pState->ext.glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
3979	p->idScreenTexture, 0); GLCHECK();
3980
3981	pState->ext.glBlitFramebuffer(srcRect.left,
3982	srcRect.top,
3983	srcRect.right,
3984	srcRect.bottom,
3985	destRect.left,
3986	destRect.top,
3987	destRect.right,
3988	destRect.bottom,
3989	GL_COLOR_BUFFER_BIT,
3990	GL_NEAREST); GLCHECK();
3991
3992	/* Reset the frame buffer association */
3993	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0); GLCHECK();
3994
3995	/* Update the overlay window. */
3996	glClear(GL_COLOR_BUFFER_BIT);
3997
3998	glBindTexture(GL_TEXTURE_2D, p->idScreenTexture); GLCHECK();
3999
4000	GLint const w = pScreen->cWidth;
4001	GLint const h = pScreen->cHeight;
4002
4003	glBegin(GL_QUADS);
4004	glTexCoord2f(0.0f, 0.0f); glVertex2i(0, h);
4005	glTexCoord2f(0.0f, 1.0f); glVertex2i(0, 0);
4006	glTexCoord2f(1.0f, 1.0f); glVertex2i(w, 0);
4007	glTexCoord2f(1.0f, 0.0f); glVertex2i(w, h);
4008	glEnd(); GLCHECK();
4009
4010	glBindTexture(GL_TEXTURE_2D, 0); GLCHECK();
4011
4012	glXMakeCurrent(pState->display, None, NULL);
4013	}
4014	else
4015	{
4016	LogRel4(("VMSVGA: vmsvga3dBackSurfaceBlitToScreen: screen %u, glXMakeCurrent for pixmap failed\n", pScreen->idScreen));
4017	}
4018
4019	XSetErrorHandler(oldHandler);
4020
4021	return VINF_SUCCESS;
4022	}
4023
4024	#else /* !RT_OS_LINUX */
4025
4026	static DECLCALLBACK(int) vmsvga3dBackDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
4027	{
4028	RT_NOREF(pThis, pThisCC, pScreen);
4029	return VERR_NOT_IMPLEMENTED;
4030	}
4031
4032	static DECLCALLBACK(int) vmsvga3dBackDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
4033	{
4034	RT_NOREF(pThisCC, pScreen);
4035	return VERR_NOT_IMPLEMENTED;
4036	}
4037
4038	static DECLCALLBACK(int) vmsvga3dBackSurfaceBlitToScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen,
4039	SVGASignedRect destRect, SVGA3dSurfaceImageId srcImage,
4040	SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *paRects)
4041	{
4042	RT_NOREF(pThisCC, pScreen, destRect, srcImage, srcRect, cRects, paRects);
4043	return VERR_NOT_IMPLEMENTED;
4044	}
4045	#endif
4046
4047	/**
4048	* Create a new 3d context
4049	*
4050	* @returns VBox status code.
4051	* @param pThisCC The VGA/VMSVGA state for ring-3.
4052	* @param cid Context id
4053	*/
4054	static DECLCALLBACK(int) vmsvga3dBackContextDefine(PVGASTATECC pThisCC, uint32_t cid)
4055	{
4056	return vmsvga3dContextDefineOgl(pThisCC, cid, 0/fFlags/);
4057	}
4058
4059	/**
4060	* Destroys a 3d context.
4061	*
4062	* @returns VBox status code.
4063	* @param pThisCC The VGA/VMSVGA state for ring-3.
4064	* @param pContext The context to destroy.
4065	* @param cid Context id
4066	*/
4067	static int vmsvga3dContextDestroyOgl(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid)
4068	{
4069	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4070	AssertReturn(pState, VERR_NO_MEMORY);
4071	AssertReturn(pContext, VERR_INVALID_PARAMETER);
4072	AssertReturn(pContext->id == cid, VERR_INVALID_PARAMETER);
4073	Log(("vmsvga3dContextDestroyOgl id %x\n", cid));
4074
4075	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4076
4077	if (pContext->id == VMSVGA3D_SHARED_CTX_ID)
4078	{
4079	/* Delete resources which use the shared context. */
4080	vmsvga3dOnSharedContextDestroy(pState);
4081	}
4082
4083	/* Destroy all leftover pixel shaders. */
4084	for (uint32_t i = 0; i < pContext->cPixelShaders; i++)
4085	{
4086	if (pContext->paPixelShader[i].id != SVGA3D_INVALID_ID)
4087	vmsvga3dBackShaderDestroy(pThisCC, pContext->paPixelShader[i].cid, pContext->paPixelShader[i].id, pContext->paPixelShader[i].type);
4088	}
4089	if (pContext->paPixelShader)
4090	RTMemFree(pContext->paPixelShader);
4091
4092	/* Destroy all leftover vertex shaders. */
4093	for (uint32_t i = 0; i < pContext->cVertexShaders; i++)
4094	{
4095	if (pContext->paVertexShader[i].id != SVGA3D_INVALID_ID)
4096	vmsvga3dBackShaderDestroy(pThisCC, pContext->paVertexShader[i].cid, pContext->paVertexShader[i].id, pContext->paVertexShader[i].type);
4097	}
4098	if (pContext->paVertexShader)
4099	RTMemFree(pContext->paVertexShader);
4100
4101	if (pContext->state.paVertexShaderConst)
4102	RTMemFree(pContext->state.paVertexShaderConst);
4103	if (pContext->state.paPixelShaderConst)
4104	RTMemFree(pContext->state.paPixelShaderConst);
4105
4106	if (pContext->pShaderContext)
4107	{
4108	int rc = ShaderContextDestroy(pContext->pShaderContext);
4109	AssertRC(rc);
4110	}
4111
4112	if (pContext->idFramebuffer != OPENGL_INVALID_ID)
4113	{
4114	/* Unbind the object from the framebuffer target. */
4115	pState->ext.glBindFramebuffer(GL_FRAMEBUFFER, 0 /* back buffer */);
4116	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4117	pState->ext.glDeleteFramebuffers(1, &pContext->idFramebuffer);
4118	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4119
4120	if (pContext->idReadFramebuffer != OPENGL_INVALID_ID)
4121	{
4122	pState->ext.glDeleteFramebuffers(1, &pContext->idReadFramebuffer);
4123	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4124	}
4125	if (pContext->idDrawFramebuffer != OPENGL_INVALID_ID)
4126	{
4127	pState->ext.glDeleteFramebuffers(1, &pContext->idDrawFramebuffer);
4128	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4129	}
4130	}
4131
4132	vmsvga3dBackOcclusionQueryDelete(pThisCC, pContext);
4133
4134	#ifdef RT_OS_WINDOWS
4135	wglMakeCurrent(pContext->hdc, NULL);
4136	wglDeleteContext(pContext->hglrc);
4137	ReleaseDC(pContext->hwnd, pContext->hdc);
4138
4139	/* Destroy the window we've created. */
4140	int rc = vmsvga3dSendThreadMessage(pState->pWindowThread, pState->WndRequestSem, WM_VMSVGA3D_DESTROYWINDOW, (WPARAM)pContext->hwnd, 0);
4141	AssertRC(rc);
4142	#elif defined(RT_OS_DARWIN)
4143	vmsvga3dCocoaDestroyViewAndContext(pContext->cocoaView, pContext->cocoaContext);
4144	#elif defined(RT_OS_LINUX)
4145	glXMakeCurrent(pState->display, None, NULL);
4146	glXDestroyContext(pState->display, pContext->glxContext);
4147	XDestroyWindow(pState->display, pContext->window);
4148	#endif
4149
4150	memset(pContext, 0, sizeof(*pContext));
4151	pContext->id = SVGA3D_INVALID_ID;
4152
4153	VMSVGA3D_CLEAR_CURRENT_CONTEXT(pState);
4154	return VINF_SUCCESS;
4155	}
4156
4157	/**
4158	* Destroy an existing 3d context
4159	*
4160	* @returns VBox status code.
4161	* @param pThisCC The VGA/VMSVGA state for ring-3.
4162	* @param cid Context id
4163	*/
4164	static DECLCALLBACK(int) vmsvga3dBackContextDestroy(PVGASTATECC pThisCC, uint32_t cid)
4165	{
4166	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4167	AssertReturn(pState, VERR_WRONG_ORDER);
4168
4169	/*
4170	* Resolve the context and hand it to the common worker function.
4171	*/
4172	if ( cid < pState->cContexts
4173	&& pState->papContexts[cid]->id == cid)
4174	return vmsvga3dContextDestroyOgl(pThisCC, pState->papContexts[cid], cid);
4175
4176	AssertReturn(cid < SVGA3D_MAX_CONTEXT_IDS, VERR_INVALID_PARAMETER);
4177	return VINF_SUCCESS;
4178	}
4179
4180	/**
4181	* Worker for vmsvga3dBackChangeMode that resizes a context.
4182	*
4183	* @param pState The VMSVGA3d state.
4184	* @param pContext The context.
4185	*/
4186	static void vmsvga3dChangeModeOneContext(PVMSVGA3DSTATE pState, PVMSVGA3DCONTEXT pContext)
4187	{
4188	RT_NOREF(pState, pContext);
4189	/* Do nothing. The window is not used for presenting. */
4190	}
4191
4192	/* Handle resize */
4193	static DECLCALLBACK(int) vmsvga3dBackChangeMode(PVGASTATECC pThisCC)
4194	{
4195	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4196	AssertReturn(pState, VERR_NO_MEMORY);
4197
4198	/* Resize the shared context too. */
4199	if (pState->SharedCtx.id == VMSVGA3D_SHARED_CTX_ID)
4200	vmsvga3dChangeModeOneContext(pState, &pState->SharedCtx);
4201
4202	/* Resize all active contexts. */
4203	for (uint32_t i = 0; i < pState->cContexts; i++)
4204	{
4205	PVMSVGA3DCONTEXT pContext = pState->papContexts[i];
4206	if (pContext->id != SVGA3D_INVALID_ID)
4207	vmsvga3dChangeModeOneContext(pState, pContext);
4208	}
4209
4210	return VINF_SUCCESS;
4211	}
4212
4213
4214	static DECLCALLBACK(int) vmsvga3dBackSetTransform(PVGASTATECC pThisCC, uint32_t cid, SVGA3dTransformType type, float matrix[16])
4215	{
4216	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4217	AssertReturn(pState, VERR_NO_MEMORY);
4218	bool fModelViewChanged = false;
4219
4220	Log(("vmsvga3dSetTransform cid=%u %s\n", cid, vmsvgaTransformToString(type)));
4221
4222	ASSERT_GUEST_RETURN((unsigned)type < SVGA3D_TRANSFORM_MAX, VERR_INVALID_PARAMETER);
4223
4224	PVMSVGA3DCONTEXT pContext;
4225	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4226	AssertRCReturn(rc, rc);
4227
4228	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4229
4230	/* Save this matrix for vm state save/restore. */
4231	pContext->state.aTransformState[type].fValid = true;
4232	memcpy(pContext->state.aTransformState[type].matrix, matrix, sizeof(pContext->state.aTransformState[type].matrix));
4233	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_TRANSFORM;
4234
4235	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)));
4236	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)));
4237	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)));
4238	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)));
4239
4240	switch (type)
4241	{
4242	case SVGA3D_TRANSFORM_VIEW:
4243	/* View * World = Model View */
4244	glMatrixMode(GL_MODELVIEW);
4245	glLoadMatrixf(matrix);
4246	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].fValid)
4247	glMultMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_WORLD].matrix);
4248	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4249	fModelViewChanged = true;
4250	break;
4251
4252	case SVGA3D_TRANSFORM_PROJECTION:
4253	{
4254	rc = ShaderTransformProjection(pContext->state.RectViewPort.w, pContext->state.RectViewPort.h, matrix, false /* fPretransformed */);
4255	AssertRCReturn(rc, rc);
4256	break;
4257	}
4258
4259	case SVGA3D_TRANSFORM_TEXTURE0:
4260	glMatrixMode(GL_TEXTURE);
4261	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4262	glLoadMatrixf(matrix);
4263	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4264	break;
4265
4266	case SVGA3D_TRANSFORM_TEXTURE1:
4267	case SVGA3D_TRANSFORM_TEXTURE2:
4268	case SVGA3D_TRANSFORM_TEXTURE3:
4269	case SVGA3D_TRANSFORM_TEXTURE4:
4270	case SVGA3D_TRANSFORM_TEXTURE5:
4271	case SVGA3D_TRANSFORM_TEXTURE6:
4272	case SVGA3D_TRANSFORM_TEXTURE7:
4273	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_TEXTUREx transform!!\n"));
4274	return VERR_INVALID_PARAMETER;
4275
4276	case SVGA3D_TRANSFORM_WORLD:
4277	/* View * World = Model View */
4278	glMatrixMode(GL_MODELVIEW);
4279	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid)
4280	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
4281	else
4282	glLoadIdentity();
4283	glMultMatrixf(matrix);
4284	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4285	fModelViewChanged = true;
4286	break;
4287
4288	case SVGA3D_TRANSFORM_WORLD1:
4289	case SVGA3D_TRANSFORM_WORLD2:
4290	case SVGA3D_TRANSFORM_WORLD3:
4291	Log(("vmsvga3dSetTransform: unsupported SVGA3D_TRANSFORM_WORLDx transform!!\n"));
4292	return VERR_INVALID_PARAMETER;
4293
4294	default:
4295	Log(("vmsvga3dSetTransform: unknown type!!\n"));
4296	return VERR_INVALID_PARAMETER;
4297	}
4298
4299	/* Apparently we need to reset the light and clip data after modifying the modelview matrix. */
4300	if (fModelViewChanged)
4301	{
4302	/* Reprogram the clip planes. */
4303	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aClipPlane); j++)
4304	{
4305	if (pContext->state.aClipPlane[j].fValid == true)
4306	vmsvga3dBackSetClipPlane(pThisCC, cid, j, pContext->state.aClipPlane[j].plane);
4307	}
4308
4309	/* Reprogram the light data. */
4310	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aLightData); j++)
4311	{
4312	if (pContext->state.aLightData[j].fValidData == true)
4313	vmsvga3dBackSetLightData(pThisCC, cid, j, &pContext->state.aLightData[j].data);
4314	}
4315	}
4316
4317	return VINF_SUCCESS;
4318	}
4319
4320	static DECLCALLBACK(int) vmsvga3dBackSetZRange(PVGASTATECC pThisCC, uint32_t cid, SVGA3dZRange zRange)
4321	{
4322	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4323	AssertReturn(pState, VERR_NO_MEMORY);
4324
4325	Log(("vmsvga3dSetZRange cid=%u min=%d max=%d\n", cid, (uint32_t)(zRange.min * 100.0), (uint32_t)(zRange.max * 100.0)));
4326
4327	PVMSVGA3DCONTEXT pContext;
4328	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4329	AssertRCReturn(rc, rc);
4330
4331	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4332
4333	pContext->state.zRange = zRange;
4334	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_ZRANGE;
4335
4336	if (zRange.min < -1.0)
4337	zRange.min = -1.0;
4338	if (zRange.max > 1.0)
4339	zRange.max = 1.0;
4340
4341	glDepthRange((GLdouble)zRange.min, (GLdouble)zRange.max);
4342	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4343	return VINF_SUCCESS;
4344	}
4345
4346	/**
4347	* Convert SVGA blend op value to its OpenGL equivalent
4348	*/
4349	static GLenum vmsvga3dBlendOp2GL(uint32_t blendOp)
4350	{
4351	switch (blendOp)
4352	{
4353	case SVGA3D_BLENDOP_ZERO:
4354	return GL_ZERO;
4355	case SVGA3D_BLENDOP_ONE:
4356	return GL_ONE;
4357	case SVGA3D_BLENDOP_SRCCOLOR:
4358	return GL_SRC_COLOR;
4359	case SVGA3D_BLENDOP_INVSRCCOLOR:
4360	return GL_ONE_MINUS_SRC_COLOR;
4361	case SVGA3D_BLENDOP_SRCALPHA:
4362	return GL_SRC_ALPHA;
4363	case SVGA3D_BLENDOP_INVSRCALPHA:
4364	return GL_ONE_MINUS_SRC_ALPHA;
4365	case SVGA3D_BLENDOP_DESTALPHA:
4366	return GL_DST_ALPHA;
4367	case SVGA3D_BLENDOP_INVDESTALPHA:
4368	return GL_ONE_MINUS_DST_ALPHA;
4369	case SVGA3D_BLENDOP_DESTCOLOR:
4370	return GL_DST_COLOR;
4371	case SVGA3D_BLENDOP_INVDESTCOLOR:
4372	return GL_ONE_MINUS_DST_COLOR;
4373	case SVGA3D_BLENDOP_SRCALPHASAT:
4374	return GL_SRC_ALPHA_SATURATE;
4375	case SVGA3D_BLENDOP_BLENDFACTOR:
4376	return GL_CONSTANT_COLOR;
4377	case SVGA3D_BLENDOP_INVBLENDFACTOR:
4378	return GL_ONE_MINUS_CONSTANT_COLOR;
4379	default:
4380	AssertFailed();
4381	return GL_ONE;
4382	}
4383	}
4384
4385	static GLenum vmsvga3dBlendEquation2GL(uint32_t blendEq)
4386	{
4387	switch (blendEq)
4388	{
4389	case SVGA3D_BLENDEQ_ADD:
4390	return GL_FUNC_ADD;
4391	case SVGA3D_BLENDEQ_SUBTRACT:
4392	return GL_FUNC_SUBTRACT;
4393	case SVGA3D_BLENDEQ_REVSUBTRACT:
4394	return GL_FUNC_REVERSE_SUBTRACT;
4395	case SVGA3D_BLENDEQ_MINIMUM:
4396	return GL_MIN;
4397	case SVGA3D_BLENDEQ_MAXIMUM:
4398	return GL_MAX;
4399	default:
4400	/* SVGA3D_BLENDEQ_INVALID means that the render state has not been set, therefore use default. */
4401	AssertMsg(blendEq == SVGA3D_BLENDEQ_INVALID, ("blendEq=%d (%#x)\n", blendEq, blendEq));
4402	return GL_FUNC_ADD;
4403	}
4404	}
4405
4406	static GLenum vmsvgaCmpFunc2GL(uint32_t cmpFunc)
4407	{
4408	switch (cmpFunc)
4409	{
4410	case SVGA3D_CMP_NEVER:
4411	return GL_NEVER;
4412	case SVGA3D_CMP_LESS:
4413	return GL_LESS;
4414	case SVGA3D_CMP_EQUAL:
4415	return GL_EQUAL;
4416	case SVGA3D_CMP_LESSEQUAL:
4417	return GL_LEQUAL;
4418	case SVGA3D_CMP_GREATER:
4419	return GL_GREATER;
4420	case SVGA3D_CMP_NOTEQUAL:
4421	return GL_NOTEQUAL;
4422	case SVGA3D_CMP_GREATEREQUAL:
4423	return GL_GEQUAL;
4424	case SVGA3D_CMP_ALWAYS:
4425	return GL_ALWAYS;
4426	default:
4427	Assert(cmpFunc == SVGA3D_CMP_INVALID);
4428	return GL_LESS;
4429	}
4430	}
4431
4432	static GLenum vmsvgaStencipOp2GL(uint32_t stencilOp)
4433	{
4434	switch (stencilOp)
4435	{
4436	case SVGA3D_STENCILOP_KEEP:
4437	return GL_KEEP;
4438	case SVGA3D_STENCILOP_ZERO:
4439	return GL_ZERO;
4440	case SVGA3D_STENCILOP_REPLACE:
4441	return GL_REPLACE;
4442	case SVGA3D_STENCILOP_INCRSAT:
4443	return GL_INCR_WRAP;
4444	case SVGA3D_STENCILOP_DECRSAT:
4445	return GL_DECR_WRAP;
4446	case SVGA3D_STENCILOP_INVERT:
4447	return GL_INVERT;
4448	case SVGA3D_STENCILOP_INCR:
4449	return GL_INCR;
4450	case SVGA3D_STENCILOP_DECR:
4451	return GL_DECR;
4452	default:
4453	Assert(stencilOp == SVGA3D_STENCILOP_INVALID);
4454	return GL_KEEP;
4455	}
4456	}
4457
4458	static DECLCALLBACK(int) vmsvga3dBackSetRenderState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cRenderStates, SVGA3dRenderState *pRenderState)
4459	{
4460	uint32_t val = UINT32_MAX; /* Shut up MSC. */
4461	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
4462	AssertReturn(pState, VERR_NO_MEMORY);
4463
4464	Log(("vmsvga3dSetRenderState cid=%u cRenderStates=%d\n", cid, cRenderStates));
4465
4466	PVMSVGA3DCONTEXT pContext;
4467	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
4468	AssertRCReturn(rc, rc);
4469
4470	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
4471
4472	for (unsigned i = 0; i < cRenderStates; i++)
4473	{
4474	GLenum enableCap = ~(GLenum)0;
4475	Log(("vmsvga3dSetRenderState: cid=%u state=%s (%d) val=%x\n", cid, vmsvga3dGetRenderStateName(pRenderState[i].state), pRenderState[i].state, pRenderState[i].uintValue));
4476	/* Save the render state for vm state saving. */
4477	ASSERT_GUEST_RETURN((unsigned)pRenderState[i].state < SVGA3D_RS_MAX, VERR_INVALID_PARAMETER);
4478	pContext->state.aRenderState[pRenderState[i].state] = pRenderState[i];
4479
4480	switch (pRenderState[i].state)
4481	{
4482	case SVGA3D_RS_ZENABLE: /* SVGA3dBool */
4483	enableCap = GL_DEPTH_TEST;
4484	val = pRenderState[i].uintValue;
4485	break;
4486
4487	case SVGA3D_RS_ZWRITEENABLE: /* SVGA3dBool */
4488	glDepthMask(!!pRenderState[i].uintValue);
4489	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4490	break;
4491
4492	case SVGA3D_RS_ALPHATESTENABLE: /* SVGA3dBool */
4493	enableCap = GL_ALPHA_TEST;
4494	val = pRenderState[i].uintValue;
4495	break;
4496
4497	case SVGA3D_RS_DITHERENABLE: /* SVGA3dBool */
4498	enableCap = GL_DITHER;
4499	val = pRenderState[i].uintValue;
4500	break;
4501
4502	case SVGA3D_RS_FOGENABLE: /* SVGA3dBool */
4503	enableCap = GL_FOG;
4504	val = pRenderState[i].uintValue;
4505	break;
4506
4507	case SVGA3D_RS_SPECULARENABLE: /* SVGA3dBool */
4508	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4509	break;
4510
4511	case SVGA3D_RS_LIGHTINGENABLE: /* SVGA3dBool */
4512	enableCap = GL_LIGHTING;
4513	val = pRenderState[i].uintValue;
4514	break;
4515
4516	case SVGA3D_RS_NORMALIZENORMALS: /* SVGA3dBool */
4517	/* not applicable */
4518	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4519	break;
4520
4521	case SVGA3D_RS_POINTSPRITEENABLE: /* SVGA3dBool */
4522	enableCap = GL_POINT_SPRITE_ARB;
4523	val = pRenderState[i].uintValue;
4524	break;
4525
4526	case SVGA3D_RS_POINTSIZE: /* float */
4527	/** @todo we need to apply scaling for point sizes below the min or above the max; see Wine) */
4528	if (pRenderState[i].floatValue < pState->caps.flPointSize[0])
4529	pRenderState[i].floatValue = pState->caps.flPointSize[0];
4530	if (pRenderState[i].floatValue > pState->caps.flPointSize[1])
4531	pRenderState[i].floatValue = pState->caps.flPointSize[1];
4532
4533	glPointSize(pRenderState[i].floatValue);
4534	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4535	Log(("SVGA3D_RS_POINTSIZE: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4536	break;
4537
4538	case SVGA3D_RS_POINTSIZEMIN: /* float */
4539	pState->ext.glPointParameterf(GL_POINT_SIZE_MIN, pRenderState[i].floatValue);
4540	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4541	Log(("SVGA3D_RS_POINTSIZEMIN: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4542	break;
4543
4544	case SVGA3D_RS_POINTSIZEMAX: /* float */
4545	pState->ext.glPointParameterf(GL_POINT_SIZE_MAX, pRenderState[i].floatValue);
4546	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4547	Log(("SVGA3D_RS_POINTSIZEMAX: %d\n", (uint32_t) (pRenderState[i].floatValue * 100.0)));
4548	break;
4549
4550	case SVGA3D_RS_POINTSCALEENABLE: /* SVGA3dBool */
4551	case SVGA3D_RS_POINTSCALE_A: /* float */
4552	case SVGA3D_RS_POINTSCALE_B: /* float */
4553	case SVGA3D_RS_POINTSCALE_C: /* float */
4554	Log(("vmsvga3dSetRenderState: WARNING: not applicable.\n"));
4555	break;
4556
4557	case SVGA3D_RS_AMBIENT: /* SVGA3dColor */
4558	{
4559	GLfloat color[4]; /* red, green, blue, alpha */
4560
4561	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4562
4563	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, color);
4564	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4565	break;
4566	}
4567
4568	case SVGA3D_RS_CLIPPLANEENABLE: /* SVGA3dClipPlanes */
4569	{
4570	for (uint32_t j = 0; j < SVGA3D_NUM_CLIPPLANES; j++)
4571	{
4572	if (pRenderState[i].uintValue & RT_BIT(j))
4573	glEnable(GL_CLIP_PLANE0 + j);
4574	else
4575	glDisable(GL_CLIP_PLANE0 + j);
4576	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4577	}
4578	break;
4579	}
4580
4581	case SVGA3D_RS_FOGCOLOR: /* SVGA3dColor */
4582	{
4583	GLfloat color[4]; /* red, green, blue, alpha */
4584
4585	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &color[0], &color[1], &color[2], &color[3]);
4586
4587	glFogfv(GL_FOG_COLOR, color);
4588	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4589	break;
4590	}
4591
4592	case SVGA3D_RS_FOGSTART: /* float */
4593	glFogf(GL_FOG_START, pRenderState[i].floatValue);
4594	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4595	break;
4596
4597	case SVGA3D_RS_FOGEND: /* float */
4598	glFogf(GL_FOG_END, pRenderState[i].floatValue);
4599	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4600	break;
4601
4602	case SVGA3D_RS_FOGDENSITY: /* float */
4603	glFogf(GL_FOG_DENSITY, pRenderState[i].floatValue);
4604	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4605	break;
4606
4607	case SVGA3D_RS_RANGEFOGENABLE: /* SVGA3dBool */
4608	glFogi(GL_FOG_COORD_SRC, (pRenderState[i].uintValue) ? GL_FOG_COORD : GL_FRAGMENT_DEPTH);
4609	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4610	break;
4611
4612	case SVGA3D_RS_FOGMODE: /* SVGA3dFogMode */
4613	{
4614	SVGA3dFogMode mode;
4615	mode.uintValue = pRenderState[i].uintValue;
4616
4617	enableCap = GL_FOG_MODE;
4618	switch (mode.function)
4619	{
4620	case SVGA3D_FOGFUNC_EXP:
4621	val = GL_EXP;
4622	break;
4623	case SVGA3D_FOGFUNC_EXP2:
4624	val = GL_EXP2;
4625	break;
4626	case SVGA3D_FOGFUNC_LINEAR:
4627	val = GL_LINEAR;
4628	break;
4629	default:
4630	AssertMsgFailedReturn(("Unexpected fog function %d\n", mode.function), VERR_INTERNAL_ERROR);
4631	break;
4632	}
4633
4634	/** @todo how to switch between vertex and pixel fog modes??? */
4635	Assert(mode.type == SVGA3D_FOGTYPE_PIXEL);
4636	#if 0
4637	/* The fog type determines the render state. */
4638	switch (mode.type)
4639	{
4640	case SVGA3D_FOGTYPE_VERTEX:
4641	renderState = D3DRS_FOGVERTEXMODE;
4642	break;
4643	case SVGA3D_FOGTYPE_PIXEL:
4644	renderState = D3DRS_FOGTABLEMODE;
4645	break;
4646	default:
4647	AssertMsgFailedReturn(("Unexpected fog type %d\n", mode.type), VERR_INTERNAL_ERROR);
4648	break;
4649	}
4650	#endif
4651
4652	/* Set the fog base to depth or range. */
4653	switch (mode.base)
4654	{
4655	case SVGA3D_FOGBASE_DEPTHBASED:
4656	glFogi(GL_FOG_COORD_SRC, GL_FRAGMENT_DEPTH);
4657	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4658	break;
4659	case SVGA3D_FOGBASE_RANGEBASED:
4660	glFogi(GL_FOG_COORD_SRC, GL_FOG_COORD);
4661	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4662	break;
4663	default:
4664	/* ignore */
4665	AssertMsgFailed(("Unexpected fog base %d\n", mode.base));
4666	break;
4667	}
4668	break;
4669	}
4670
4671	case SVGA3D_RS_FILLMODE: /* SVGA3dFillMode */
4672	{
4673	SVGA3dFillMode mode;
4674
4675	mode.uintValue = pRenderState[i].uintValue;
4676
4677	switch (mode.mode)
4678	{
4679	case SVGA3D_FILLMODE_POINT:
4680	val = GL_POINT;
4681	break;
4682	case SVGA3D_FILLMODE_LINE:
4683	val = GL_LINE;
4684	break;
4685	case SVGA3D_FILLMODE_FILL:
4686	val = GL_FILL;
4687	break;
4688	default:
4689	AssertMsgFailedReturn(("Unexpected fill mode %d\n", mode.mode), VERR_INTERNAL_ERROR);
4690	break;
4691	}
4692	/* Only front and back faces. Also recent Mesa guest drivers initialize the 'face' to zero. */
4693	ASSERT_GUEST(mode.face == SVGA3D_FACE_FRONT_BACK \|\| mode.face == SVGA3D_FACE_INVALID);
4694	glPolygonMode(GL_FRONT_AND_BACK, val);
4695	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4696	break;
4697	}
4698
4699	case SVGA3D_RS_SHADEMODE: /* SVGA3dShadeMode */
4700	switch (pRenderState[i].uintValue)
4701	{
4702	case SVGA3D_SHADEMODE_FLAT:
4703	val = GL_FLAT;
4704	break;
4705
4706	case SVGA3D_SHADEMODE_SMOOTH:
4707	val = GL_SMOOTH;
4708	break;
4709
4710	default:
4711	AssertMsgFailedReturn(("Unexpected shade mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4712	break;
4713	}
4714
4715	glShadeModel(val);
4716	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4717	break;
4718
4719	case SVGA3D_RS_LINEPATTERN: /* SVGA3dLinePattern */
4720	/* No longer supported by d3d; mesagl comments suggest not all backends support it */
4721	/** @todo */
4722	Log(("WARNING: SVGA3D_RS_LINEPATTERN %x not supported!!\n", pRenderState[i].uintValue));
4723	/*
4724	renderState = D3DRS_LINEPATTERN;
4725	val = pRenderState[i].uintValue;
4726	*/
4727	break;
4728
4729	case SVGA3D_RS_ANTIALIASEDLINEENABLE: /* SVGA3dBool */
4730	enableCap = GL_LINE_SMOOTH;
4731	val = pRenderState[i].uintValue;
4732	break;
4733
4734	case SVGA3D_RS_LINEWIDTH: /* float */
4735	glLineWidth(pRenderState[i].floatValue);
4736	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4737	break;
4738
4739	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
4740	{
4741	/* Refresh the blending state based on the new enable setting.
4742	* This will take existing states and set them using either glBlend* or glBlend*Separate.
4743	*/
4744	static SVGA3dRenderStateName const saRefreshState[] =
4745	{
4746	SVGA3D_RS_SRCBLEND,
4747	SVGA3D_RS_BLENDEQUATION
4748	};
4749	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4750	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4751	{
4752	renderstate[j].state = saRefreshState[j];
4753	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4754	}
4755
4756	rc = vmsvga3dBackSetRenderState(pThisCC, cid, 2, renderstate);
4757	AssertRCReturn(rc, rc);
4758
4759	if (pContext->state.aRenderState[SVGA3D_RS_BLENDENABLE].uintValue != 0)
4760	continue; /* Ignore if blend is enabled */
4761	/* Apply SVGA3D_RS_SEPARATEALPHABLENDENABLE as SVGA3D_RS_BLENDENABLE */
4762	} RT_FALL_THRU();
4763
4764	case SVGA3D_RS_BLENDENABLE: /* SVGA3dBool */
4765	enableCap = GL_BLEND;
4766	val = pRenderState[i].uintValue;
4767	break;
4768
4769	case SVGA3D_RS_SRCBLENDALPHA: /* SVGA3dBlendOp */
4770	case SVGA3D_RS_DSTBLENDALPHA: /* SVGA3dBlendOp */
4771	case SVGA3D_RS_SRCBLEND: /* SVGA3dBlendOp */
4772	case SVGA3D_RS_DSTBLEND: /* SVGA3dBlendOp */
4773	{
4774	GLint srcRGB, srcAlpha, dstRGB, dstAlpha;
4775	GLint blendop = vmsvga3dBlendOp2GL(pRenderState[i].uintValue);
4776
4777	glGetIntegerv(GL_BLEND_SRC_RGB, &srcRGB);
4778	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4779	glGetIntegerv(GL_BLEND_DST_RGB, &dstRGB);
4780	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4781	glGetIntegerv(GL_BLEND_DST_ALPHA, &dstAlpha);
4782	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4783	glGetIntegerv(GL_BLEND_SRC_ALPHA, &srcAlpha);
4784	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4785
4786	switch (pRenderState[i].state)
4787	{
4788	case SVGA3D_RS_SRCBLEND:
4789	srcRGB = blendop;
4790	break;
4791	case SVGA3D_RS_DSTBLEND:
4792	dstRGB = blendop;
4793	break;
4794	case SVGA3D_RS_SRCBLENDALPHA:
4795	srcAlpha = blendop;
4796	break;
4797	case SVGA3D_RS_DSTBLENDALPHA:
4798	dstAlpha = blendop;
4799	break;
4800	default:
4801	/* not possible; shut up gcc */
4802	AssertFailed();
4803	break;
4804	}
4805
4806	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4807	pState->ext.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha);
4808	else
4809	glBlendFunc(srcRGB, dstRGB);
4810	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4811	break;
4812	}
4813
4814	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
4815	case SVGA3D_RS_BLENDEQUATION: /* SVGA3dBlendEquation */
4816	if (pContext->state.aRenderState[SVGA3D_RS_SEPARATEALPHABLENDENABLE].uintValue != 0)
4817	{
4818	GLenum const modeRGB = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATION].uintValue);
4819	GLenum const modeAlpha = vmsvga3dBlendEquation2GL(pContext->state.aRenderState[SVGA3D_RS_BLENDEQUATIONALPHA].uintValue);
4820	pState->ext.glBlendEquationSeparate(modeRGB, modeAlpha);
4821	}
4822	else
4823	{
4824	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4825	glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4826	#else
4827	pState->ext.glBlendEquation(vmsvga3dBlendEquation2GL(pRenderState[i].uintValue));
4828	#endif
4829	}
4830	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4831	break;
4832
4833	case SVGA3D_RS_BLENDCOLOR: /* SVGA3dColor */
4834	{
4835	GLfloat red, green, blue, alpha;
4836
4837	vmsvgaColor2GLFloatArray(pRenderState[i].uintValue, &red, &green, &blue, &alpha);
4838
4839	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x102
4840	glBlendColor(red, green, blue, alpha);
4841	#else
4842	pState->ext.glBlendColor(red, green, blue, alpha);
4843	#endif
4844	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4845	break;
4846	}
4847
4848	case SVGA3D_RS_CULLMODE: /* SVGA3dFace */
4849	{
4850	GLenum mode = GL_BACK; /* default for OpenGL */
4851
4852	switch (pRenderState[i].uintValue)
4853	{
4854	case SVGA3D_FACE_NONE:
4855	break;
4856	case SVGA3D_FACE_FRONT:
4857	mode = GL_FRONT;
4858	break;
4859	case SVGA3D_FACE_BACK:
4860	mode = GL_BACK;
4861	break;
4862	case SVGA3D_FACE_FRONT_BACK:
4863	mode = GL_FRONT_AND_BACK;
4864	break;
4865	default:
4866	AssertMsgFailedReturn(("Unexpected cull mode %d\n", pRenderState[i].uintValue), VERR_INTERNAL_ERROR);
4867	break;
4868	}
4869	enableCap = GL_CULL_FACE;
4870	if (pRenderState[i].uintValue != SVGA3D_FACE_NONE)
4871	{
4872	glCullFace(mode);
4873	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4874	val = 1;
4875	}
4876	else
4877	val = 0;
4878	break;
4879	}
4880
4881	case SVGA3D_RS_ZFUNC: /* SVGA3dCmpFunc */
4882	glDepthFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue));
4883	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4884	break;
4885
4886	case SVGA3D_RS_ALPHAFUNC: /* SVGA3dCmpFunc */
4887	{
4888	GLclampf ref;
4889
4890	glGetFloatv(GL_ALPHA_TEST_REF, &ref);
4891	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4892	glAlphaFunc(vmsvgaCmpFunc2GL(pRenderState[i].uintValue), ref);
4893	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4894	break;
4895	}
4896
4897	case SVGA3D_RS_ALPHAREF: /* float (0.0 .. 1.0) */
4898	{
4899	GLint func;
4900
4901	glGetIntegerv(GL_ALPHA_TEST_FUNC, &func);
4902	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4903	glAlphaFunc(func, pRenderState[i].floatValue);
4904	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4905	break;
4906	}
4907
4908	case SVGA3D_RS_STENCILENABLE2SIDED: /* SVGA3dBool */
4909	{
4910	/* Refresh the stencil state based on the new enable setting.
4911	* This will take existing states and set them using either glStencil or glStencil*Separate.
4912	*/
4913	static SVGA3dRenderStateName const saRefreshState[] =
4914	{
4915	SVGA3D_RS_STENCILFUNC,
4916	SVGA3D_RS_STENCILFAIL,
4917	SVGA3D_RS_CCWSTENCILFUNC,
4918	SVGA3D_RS_CCWSTENCILFAIL
4919	};
4920	SVGA3dRenderState renderstate[RT_ELEMENTS(saRefreshState)];
4921	for (uint32_t j = 0; j < RT_ELEMENTS(saRefreshState); ++j)
4922	{
4923	renderstate[j].state = saRefreshState[j];
4924	renderstate[j].uintValue = pContext->state.aRenderState[saRefreshState[j]].uintValue;
4925	}
4926
4927	rc = vmsvga3dBackSetRenderState(pThisCC, cid, RT_ELEMENTS(renderstate), renderstate);
4928	AssertRCReturn(rc, rc);
4929
4930	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE].uintValue != 0)
4931	continue; /* Ignore if stencil is enabled */
4932	/* Apply SVGA3D_RS_STENCILENABLE2SIDED as SVGA3D_RS_STENCILENABLE. */
4933	} RT_FALL_THRU();
4934
4935	case SVGA3D_RS_STENCILENABLE: /* SVGA3dBool */
4936	enableCap = GL_STENCIL_TEST;
4937	val = pRenderState[i].uintValue;
4938	break;
4939
4940	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4941	case SVGA3D_RS_STENCILREF: /* uint32_t */
4942	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4943	{
4944	GLint func, ref;
4945	GLuint mask;
4946
4947	/* Query current values to have all parameters for glStencilFunc[Separate]. */
4948	glGetIntegerv(GL_STENCIL_FUNC, &func);
4949	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4950	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
4951	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4952	glGetIntegerv(GL_STENCIL_REF, &ref);
4953	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4954
4955	/* Update the changed value. */
4956	switch (pRenderState[i].state)
4957	{
4958	case SVGA3D_RS_STENCILFUNC: /* SVGA3dCmpFunc */
4959	func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
4960	break;
4961
4962	case SVGA3D_RS_STENCILREF: /* uint32_t */
4963	ref = pRenderState[i].uintValue;
4964	break;
4965
4966	case SVGA3D_RS_STENCILMASK: /* uint32_t */
4967	mask = pRenderState[i].uintValue;
4968	break;
4969
4970	default:
4971	/* not possible; shut up gcc */
4972	AssertFailed();
4973	break;
4974	}
4975
4976	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
4977	{
4978	pState->ext.glStencilFuncSeparate(GL_FRONT, func, ref, mask);
4979	}
4980	else
4981	{
4982	glStencilFunc(func, ref, mask);
4983	}
4984	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4985	break;
4986	}
4987
4988	case SVGA3D_RS_STENCILWRITEMASK: /* uint32_t */
4989	glStencilMask(pRenderState[i].uintValue);
4990	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
4991	break;
4992
4993	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
4994	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
4995	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
4996	{
4997	GLint sfail, dpfail, dppass;
4998	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
4999
5000	glGetIntegerv(GL_STENCIL_FAIL, &sfail);
5001	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5002	glGetIntegerv(GL_STENCIL_PASS_DEPTH_FAIL, &dpfail);
5003	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5004	glGetIntegerv(GL_STENCIL_PASS_DEPTH_PASS, &dppass);
5005	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5006
5007	switch (pRenderState[i].state)
5008	{
5009	case SVGA3D_RS_STENCILFAIL: /* SVGA3dStencilOp */
5010	sfail = stencilop;
5011	break;
5012	case SVGA3D_RS_STENCILZFAIL: /* SVGA3dStencilOp */
5013	dpfail = stencilop;
5014	break;
5015	case SVGA3D_RS_STENCILPASS: /* SVGA3dStencilOp */
5016	dppass = stencilop;
5017	break;
5018	default:
5019	/* not possible; shut up gcc */
5020	AssertFailed();
5021	break;
5022	}
5023	if (pContext->state.aRenderState[SVGA3D_RS_STENCILENABLE2SIDED].uintValue != 0)
5024	{
5025	pState->ext.glStencilOpSeparate(GL_FRONT, sfail, dpfail, dppass);
5026	}
5027	else
5028	{
5029	glStencilOp(sfail, dpfail, dppass);
5030	}
5031	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5032	break;
5033	}
5034
5035	case SVGA3D_RS_CCWSTENCILFUNC: /* SVGA3dCmpFunc */
5036	{
5037	GLint ref;
5038	GLuint mask;
5039	GLint const func = vmsvgaCmpFunc2GL(pRenderState[i].uintValue);
5040
5041	/* GL_STENCIL_VALUE_MASK and GL_STENCIL_REF are the same for both GL_FRONT and GL_BACK. */
5042	glGetIntegerv(GL_STENCIL_VALUE_MASK, (GLint *)&mask);
5043	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5044	glGetIntegerv(GL_STENCIL_REF, &ref);
5045	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5046
5047	pState->ext.glStencilFuncSeparate(GL_BACK, func, ref, mask);
5048	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5049	break;
5050	}
5051
5052	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5053	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5054	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5055	{
5056	GLint sfail, dpfail, dppass;
5057	GLenum const stencilop = vmsvgaStencipOp2GL(pRenderState[i].uintValue);
5058
5059	glGetIntegerv(GL_STENCIL_BACK_FAIL, &sfail);
5060	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5061	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_FAIL, &dpfail);
5062	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5063	glGetIntegerv(GL_STENCIL_BACK_PASS_DEPTH_PASS, &dppass);
5064	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5065
5066	switch (pRenderState[i].state)
5067	{
5068	case SVGA3D_RS_CCWSTENCILFAIL: /* SVGA3dStencilOp */
5069	sfail = stencilop;
5070	break;
5071	case SVGA3D_RS_CCWSTENCILZFAIL: /* SVGA3dStencilOp */
5072	dpfail = stencilop;
5073	break;
5074	case SVGA3D_RS_CCWSTENCILPASS: /* SVGA3dStencilOp */
5075	dppass = stencilop;
5076	break;
5077	default:
5078	/* not possible; shut up gcc */
5079	AssertFailed();
5080	break;
5081	}
5082	pState->ext.glStencilOpSeparate(GL_BACK, sfail, dpfail, dppass);
5083	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5084	break;
5085	}
5086
5087	case SVGA3D_RS_ZBIAS: /* float */
5088	/** @todo unknown meaning; depth bias is not identical
5089	renderState = D3DRS_DEPTHBIAS;
5090	val = pRenderState[i].uintValue;
5091	*/
5092	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_RS_ZBIAS\n"));
5093	break;
5094
5095	case SVGA3D_RS_DEPTHBIAS: /* float */
5096	{
5097	GLfloat factor;
5098
5099	/** @todo not sure if the d3d & ogl definitions are identical. */
5100
5101	/* Do not change the factor part. */
5102	glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &factor);
5103	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5104
5105	glPolygonOffset(factor, pRenderState[i].floatValue);
5106	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5107	break;
5108	}
5109
5110	case SVGA3D_RS_SLOPESCALEDEPTHBIAS: /* float */
5111	{
5112	GLfloat units;
5113
5114	/** @todo not sure if the d3d & ogl definitions are identical. */
5115
5116	/* Do not change the factor part. */
5117	glGetFloatv(GL_POLYGON_OFFSET_UNITS, &units);
5118	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5119
5120	glPolygonOffset(pRenderState[i].floatValue, units);
5121	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5122	break;
5123	}
5124
5125	case SVGA3D_RS_COLORWRITEENABLE: /* SVGA3dColorMask */
5126	{
5127	GLboolean red, green, blue, alpha;
5128	SVGA3dColorMask mask;
5129
5130	mask.uintValue = pRenderState[i].uintValue;
5131
5132	red = mask.red;
5133	green = mask.green;
5134	blue = mask.blue;
5135	alpha = mask.alpha;
5136
5137	glColorMask(red, green, blue, alpha);
5138	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5139	break;
5140	}
5141
5142	case SVGA3D_RS_COLORWRITEENABLE1: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5143	case SVGA3D_RS_COLORWRITEENABLE2: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5144	case SVGA3D_RS_COLORWRITEENABLE3: /* SVGA3dColorMask to D3DCOLORWRITEENABLE_* */
5145	Log(("vmsvga3dSetRenderState: WARNING SVGA3D_RS_COLORWRITEENABLEx not supported!!\n"));
5146	break;
5147
5148	case SVGA3D_RS_SCISSORTESTENABLE: /* SVGA3dBool */
5149	enableCap = GL_SCISSOR_TEST;
5150	val = pRenderState[i].uintValue;
5151	break;
5152
5153	#if 0
5154	case SVGA3D_RS_DIFFUSEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5155	AssertCompile(D3DMCS_COLOR2 == SVGA3D_VERTEXMATERIAL_SPECULAR);
5156	renderState = D3DRS_DIFFUSEMATERIALSOURCE;
5157	val = pRenderState[i].uintValue;
5158	break;
5159
5160	case SVGA3D_RS_SPECULARMATERIALSOURCE: /* SVGA3dVertexMaterial */
5161	renderState = D3DRS_SPECULARMATERIALSOURCE;
5162	val = pRenderState[i].uintValue;
5163	break;
5164
5165	case SVGA3D_RS_AMBIENTMATERIALSOURCE: /* SVGA3dVertexMaterial */
5166	renderState = D3DRS_AMBIENTMATERIALSOURCE;
5167	val = pRenderState[i].uintValue;
5168	break;
5169
5170	case SVGA3D_RS_EMISSIVEMATERIALSOURCE: /* SVGA3dVertexMaterial */
5171	renderState = D3DRS_EMISSIVEMATERIALSOURCE;
5172	val = pRenderState[i].uintValue;
5173	break;
5174	#endif
5175
5176	case SVGA3D_RS_WRAP3: /* SVGA3dWrapFlags */
5177	case SVGA3D_RS_WRAP4: /* SVGA3dWrapFlags */
5178	case SVGA3D_RS_WRAP5: /* SVGA3dWrapFlags */
5179	case SVGA3D_RS_WRAP6: /* SVGA3dWrapFlags */
5180	case SVGA3D_RS_WRAP7: /* SVGA3dWrapFlags */
5181	case SVGA3D_RS_WRAP8: /* SVGA3dWrapFlags */
5182	case SVGA3D_RS_WRAP9: /* SVGA3dWrapFlags */
5183	case SVGA3D_RS_WRAP10: /* SVGA3dWrapFlags */
5184	case SVGA3D_RS_WRAP11: /* SVGA3dWrapFlags */
5185	case SVGA3D_RS_WRAP12: /* SVGA3dWrapFlags */
5186	case SVGA3D_RS_WRAP13: /* SVGA3dWrapFlags */
5187	case SVGA3D_RS_WRAP14: /* SVGA3dWrapFlags */
5188	case SVGA3D_RS_WRAP15: /* SVGA3dWrapFlags */
5189	Log(("vmsvga3dSetRenderState: WARNING unsupported SVGA3D_WRAPx (x >= 3)\n"));
5190	break;
5191
5192	case SVGA3D_RS_LASTPIXEL: /* SVGA3dBool */
5193	case SVGA3D_RS_TWEENFACTOR: /* float */
5194	case SVGA3D_RS_INDEXEDVERTEXBLENDENABLE: /* SVGA3dBool */
5195	case SVGA3D_RS_VERTEXBLEND: /* SVGA3dVertexBlendFlags */
5196	Log(("vmsvga3dSetRenderState: WARNING not applicable!!\n"));
5197	break;
5198
5199	case SVGA3D_RS_MULTISAMPLEANTIALIAS: /* SVGA3dBool */
5200	enableCap = GL_MULTISAMPLE;
5201	val = pRenderState[i].uintValue;
5202	break;
5203
5204	case SVGA3D_RS_MULTISAMPLEMASK: /* uint32_t */
5205	Log(("vmsvga3dSetRenderState: WARNING not applicable??!!\n"));
5206	break;
5207
5208	case SVGA3D_RS_COORDINATETYPE: /* SVGA3dCoordinateType */
5209	Assert(pRenderState[i].uintValue == SVGA3D_COORDINATE_LEFTHANDED);
5210	/** @todo setup a view matrix to scale the world space by -1 in the z-direction for right handed coordinates. */
5211	/*
5212	renderState = D3DRS_COORDINATETYPE;
5213	val = pRenderState[i].uintValue;
5214	*/
5215	break;
5216
5217	case SVGA3D_RS_FRONTWINDING: /* SVGA3dFrontWinding */
5218	Assert(pRenderState[i].uintValue == SVGA3D_FRONTWINDING_CW);
5219	/* Invert the selected mode because of y-inversion (?) */
5220	glFrontFace((pRenderState[i].uintValue != SVGA3D_FRONTWINDING_CW) ? GL_CW : GL_CCW);
5221	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5222	break;
5223
5224	case SVGA3D_RS_OUTPUTGAMMA: /* float */
5225	//AssertFailed();
5226	/*
5227	D3DRS_SRGBWRITEENABLE ??
5228	renderState = D3DRS_OUTPUTGAMMA;
5229	val = pRenderState[i].uintValue;
5230	*/
5231	break;
5232
5233	#if 0
5234
5235	case SVGA3D_RS_VERTEXMATERIALENABLE: /* SVGA3dBool */
5236	//AssertFailed();
5237	renderState = D3DRS_INDEXEDVERTEXBLENDENABLE; /* correct?? */
5238	val = pRenderState[i].uintValue;
5239	break;
5240
5241	case SVGA3D_RS_TEXTUREFACTOR: /* SVGA3dColor */
5242	renderState = D3DRS_TEXTUREFACTOR;
5243	val = pRenderState[i].uintValue;
5244	break;
5245
5246	case SVGA3D_RS_LOCALVIEWER: /* SVGA3dBool */
5247	renderState = D3DRS_LOCALVIEWER;
5248	val = pRenderState[i].uintValue;
5249	break;
5250
5251	case SVGA3D_RS_ZVISIBLE: /* SVGA3dBool */
5252	AssertFailed();
5253	/*
5254	renderState = D3DRS_ZVISIBLE;
5255	val = pRenderState[i].uintValue;
5256	*/
5257	break;
5258
5259	case SVGA3D_RS_CLIPPING: /* SVGA3dBool */
5260	renderState = D3DRS_CLIPPING;
5261	val = pRenderState[i].uintValue;
5262	break;
5263
5264	case SVGA3D_RS_WRAP0: /* SVGA3dWrapFlags */
5265	glTexParameter GL_TEXTURE_WRAP_S
5266	Assert(SVGA3D_WRAPCOORD_3 == D3DWRAPCOORD_3);
5267	renderState = D3DRS_WRAP0;
5268	val = pRenderState[i].uintValue;
5269	break;
5270
5271	case SVGA3D_RS_WRAP1: /* SVGA3dWrapFlags */
5272	glTexParameter GL_TEXTURE_WRAP_T
5273	renderState = D3DRS_WRAP1;
5274	val = pRenderState[i].uintValue;
5275	break;
5276
5277	case SVGA3D_RS_WRAP2: /* SVGA3dWrapFlags */
5278	glTexParameter GL_TEXTURE_WRAP_R
5279	renderState = D3DRS_WRAP2;
5280	val = pRenderState[i].uintValue;
5281	break;
5282
5283
5284	case SVGA3D_RS_SEPARATEALPHABLENDENABLE: /* SVGA3dBool */
5285	renderState = D3DRS_SEPARATEALPHABLENDENABLE;
5286	val = pRenderState[i].uintValue;
5287	break;
5288
5289
5290	case SVGA3D_RS_BLENDEQUATIONALPHA: /* SVGA3dBlendEquation */
5291	renderState = D3DRS_BLENDOPALPHA;
5292	val = pRenderState[i].uintValue;
5293	break;
5294
5295	case SVGA3D_RS_TRANSPARENCYANTIALIAS: /* SVGA3dTransparencyAntialiasType */
5296	AssertFailed();
5297	/*
5298	renderState = D3DRS_TRANSPARENCYANTIALIAS;
5299	val = pRenderState[i].uintValue;
5300	*/
5301	break;
5302
5303	#endif
5304	default:
5305	AssertFailed();
5306	break;
5307	}
5308
5309	if (enableCap != ~(GLenum)0)
5310	{
5311	if (val)
5312	glEnable(enableCap);
5313	else
5314	glDisable(enableCap);
5315	}
5316	}
5317
5318	return VINF_SUCCESS;
5319	}
5320
5321	static DECLCALLBACK(int) vmsvga3dBackSetRenderTarget(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRenderTargetType type, SVGA3dSurfaceImageId target)
5322	{
5323	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5324
5325	AssertReturn(pState, VERR_NO_MEMORY);
5326	AssertReturn((unsigned)type < SVGA3D_RT_MAX, VERR_INVALID_PARAMETER);
5327
5328	LogFunc(("cid=%u type=%x sid=%u\n", cid, type, target.sid));
5329
5330	PVMSVGA3DCONTEXT pContext;
5331	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5332	AssertRCReturn(rc, rc);
5333
5334	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5335
5336	/* Save for vm state save/restore. */
5337	pContext->state.aRenderTargets[type] = target.sid;
5338
5339	if (target.sid == SVGA3D_INVALID_ID)
5340	{
5341	/* Disable render target. */
5342	switch (type)
5343	{
5344	case SVGA3D_RT_DEPTH:
5345	case SVGA3D_RT_STENCIL:
5346	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER, (type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
5347	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5348	break;
5349
5350	case SVGA3D_RT_COLOR0:
5351	case SVGA3D_RT_COLOR1:
5352	case SVGA3D_RT_COLOR2:
5353	case SVGA3D_RT_COLOR3:
5354	case SVGA3D_RT_COLOR4:
5355	case SVGA3D_RT_COLOR5:
5356	case SVGA3D_RT_COLOR6:
5357	case SVGA3D_RT_COLOR7:
5358	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0, 0, 0, 0);
5359	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5360	break;
5361
5362	default:
5363	AssertFailedReturn(VERR_INVALID_PARAMETER);
5364	}
5365	return VINF_SUCCESS;
5366	}
5367
5368	PVMSVGA3DSURFACE pRenderTarget;
5369	rc = vmsvga3dSurfaceFromSid(pState, target.sid, &pRenderTarget);
5370	AssertRCReturn(rc, rc);
5371
5372	switch (type)
5373	{
5374	case SVGA3D_RT_DEPTH:
5375	case SVGA3D_RT_STENCIL:
5376	#if 1
5377	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5378	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5379	{
5380	LogFunc(("create depth texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n",
5381	target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->format));
5382	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5383	AssertRCReturn(rc, rc);
5384	}
5385
5386	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5387	Assert(!pRenderTarget->fDirty);
5388
5389	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5390
5391	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER,
5392	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5393	GL_TEXTURE_2D, pRenderTarget->oglId.texture, target.mipmap);
5394	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5395	#else
5396	AssertReturn(target.mipmap == 0, VERR_INVALID_PARAMETER);
5397	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5398	{
5399	Log(("vmsvga3dSetRenderTarget: create renderbuffer to be used as render target; surface id=%x type=%d format=%d\n", target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->internalFormatGL));
5400	pContext = &pState->SharedCtx;
5401	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5402
5403	pState->ext.glGenRenderbuffers(1, &pRenderTarget->oglId.renderbuffer);
5404	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5405	pSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_RENDERBUFFER;
5406
5407	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5408	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5409
5410	pState->ext.glRenderbufferStorage(GL_RENDERBUFFER,
5411	pRenderTarget->internalFormatGL,
5412	pRenderTarget->paMipmapLevels[0].mipmapSize.width,
5413	pRenderTarget->paMipmapLevels[0].mipmapSize.height);
5414	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5415
5416	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, OPENGL_INVALID_ID);
5417	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5418
5419	pContext = pState->papContexts[cid];
5420	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5421	}
5422
5423	pState->ext.glBindRenderbuffer(GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5424	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5425	Assert(!pRenderTarget->fDirty);
5426	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5427
5428	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
5429
5430	pState->ext.glFramebufferRenderbuffer(GL_FRAMEBUFFER,
5431	(type == SVGA3D_RT_DEPTH) ? GL_DEPTH_ATTACHMENT : GL_STENCIL_ATTACHMENT,
5432	GL_RENDERBUFFER, pRenderTarget->oglId.renderbuffer);
5433	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5434	#endif
5435	break;
5436
5437	case SVGA3D_RT_COLOR0:
5438	case SVGA3D_RT_COLOR1:
5439	case SVGA3D_RT_COLOR2:
5440	case SVGA3D_RT_COLOR3:
5441	case SVGA3D_RT_COLOR4:
5442	case SVGA3D_RT_COLOR5:
5443	case SVGA3D_RT_COLOR6:
5444	case SVGA3D_RT_COLOR7:
5445	{
5446	/* A texture surface can be used as a render target to fill it and later on used as a texture. */
5447	if (pRenderTarget->oglId.texture == OPENGL_INVALID_ID)
5448	{
5449	Log(("vmsvga3dSetRenderTarget: create texture to be used as render target; surface id=%x type=%d format=%d -> create texture\n", target.sid, pRenderTarget->f.s.surface1Flags, pRenderTarget->format));
5450	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pRenderTarget);
5451	AssertRCReturn(rc, rc);
5452	}
5453
5454	AssertReturn(pRenderTarget->oglId.texture != OPENGL_INVALID_ID, VERR_INVALID_PARAMETER);
5455	Assert(!pRenderTarget->fDirty);
5456
5457	pRenderTarget->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_RENDERTARGET;
5458
5459	GLenum textarget;
5460	if (pRenderTarget->f.s.surface1Flags & SVGA3D_SURFACE_CUBEMAP)
5461	textarget = vmsvga3dCubemapFaceFromIndex(target.face);
5462	else
5463	textarget = GL_TEXTURE_2D;
5464	pState->ext.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + type - SVGA3D_RT_COLOR0,
5465	textarget, pRenderTarget->oglId.texture, target.mipmap);
5466	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5467
5468	#ifdef DEBUG
5469	GLenum status = pState->ext.glCheckFramebufferStatus(GL_FRAMEBUFFER);
5470	if (status != GL_FRAMEBUFFER_COMPLETE)
5471	Log(("vmsvga3dSetRenderTarget: WARNING: glCheckFramebufferStatus returned %x\n", status));
5472	#endif
5473	/** @todo use glDrawBuffers too? */
5474	break;
5475	}
5476
5477	default:
5478	AssertFailedReturn(VERR_INVALID_PARAMETER);
5479	}
5480
5481	return VINF_SUCCESS;
5482	}
5483
5484	#if 0
5485	/**
5486	* Convert SVGA texture combiner value to its D3D equivalent
5487	*/
5488	static DWORD vmsvga3dTextureCombiner2D3D(uint32_t value)
5489	{
5490	switch (value)
5491	{
5492	case SVGA3D_TC_DISABLE:
5493	return D3DTOP_DISABLE;
5494	case SVGA3D_TC_SELECTARG1:
5495	return D3DTOP_SELECTARG1;
5496	case SVGA3D_TC_SELECTARG2:
5497	return D3DTOP_SELECTARG2;
5498	case SVGA3D_TC_MODULATE:
5499	return D3DTOP_MODULATE;
5500	case SVGA3D_TC_ADD:
5501	return D3DTOP_ADD;
5502	case SVGA3D_TC_ADDSIGNED:
5503	return D3DTOP_ADDSIGNED;
5504	case SVGA3D_TC_SUBTRACT:
5505	return D3DTOP_SUBTRACT;
5506	case SVGA3D_TC_BLENDTEXTUREALPHA:
5507	return D3DTOP_BLENDTEXTUREALPHA;
5508	case SVGA3D_TC_BLENDDIFFUSEALPHA:
5509	return D3DTOP_BLENDDIFFUSEALPHA;
5510	case SVGA3D_TC_BLENDCURRENTALPHA:
5511	return D3DTOP_BLENDCURRENTALPHA;
5512	case SVGA3D_TC_BLENDFACTORALPHA:
5513	return D3DTOP_BLENDFACTORALPHA;
5514	case SVGA3D_TC_MODULATE2X:
5515	return D3DTOP_MODULATE2X;
5516	case SVGA3D_TC_MODULATE4X:
5517	return D3DTOP_MODULATE4X;
5518	case SVGA3D_TC_DSDT:
5519	AssertFailed(); /** @todo ??? */
5520	return D3DTOP_DISABLE;
5521	case SVGA3D_TC_DOTPRODUCT3:
5522	return D3DTOP_DOTPRODUCT3;
5523	case SVGA3D_TC_BLENDTEXTUREALPHAPM:
5524	return D3DTOP_BLENDTEXTUREALPHAPM;
5525	case SVGA3D_TC_ADDSIGNED2X:
5526	return D3DTOP_ADDSIGNED2X;
5527	case SVGA3D_TC_ADDSMOOTH:
5528	return D3DTOP_ADDSMOOTH;
5529	case SVGA3D_TC_PREMODULATE:
5530	return D3DTOP_PREMODULATE;
5531	case SVGA3D_TC_MODULATEALPHA_ADDCOLOR:
5532	return D3DTOP_MODULATEALPHA_ADDCOLOR;
5533	case SVGA3D_TC_MODULATECOLOR_ADDALPHA:
5534	return D3DTOP_MODULATECOLOR_ADDALPHA;
5535	case SVGA3D_TC_MODULATEINVALPHA_ADDCOLOR:
5536	return D3DTOP_MODULATEINVALPHA_ADDCOLOR;
5537	case SVGA3D_TC_MODULATEINVCOLOR_ADDALPHA:
5538	return D3DTOP_MODULATEINVCOLOR_ADDALPHA;
5539	case SVGA3D_TC_BUMPENVMAPLUMINANCE:
5540	return D3DTOP_BUMPENVMAPLUMINANCE;
5541	case SVGA3D_TC_MULTIPLYADD:
5542	return D3DTOP_MULTIPLYADD;
5543	case SVGA3D_TC_LERP:
5544	return D3DTOP_LERP;
5545	default:
5546	AssertFailed();
5547	return D3DTOP_DISABLE;
5548	}
5549	}
5550
5551	/**
5552	* Convert SVGA texture arg data value to its D3D equivalent
5553	*/
5554	static DWORD vmsvga3dTextureArgData2D3D(uint32_t value)
5555	{
5556	switch (value)
5557	{
5558	case SVGA3D_TA_CONSTANT:
5559	return D3DTA_CONSTANT;
5560	case SVGA3D_TA_PREVIOUS:
5561	return D3DTA_CURRENT; /* current = previous */
5562	case SVGA3D_TA_DIFFUSE:
5563	return D3DTA_DIFFUSE;
5564	case SVGA3D_TA_TEXTURE:
5565	return D3DTA_TEXTURE;
5566	case SVGA3D_TA_SPECULAR:
5567	return D3DTA_SPECULAR;
5568	default:
5569	AssertFailed();
5570	return 0;
5571	}
5572	}
5573
5574	/**
5575	* Convert SVGA texture transform flag value to its D3D equivalent
5576	*/
5577	static DWORD vmsvga3dTextTransformFlags2D3D(uint32_t value)
5578	{
5579	switch (value)
5580	{
5581	case SVGA3D_TEX_TRANSFORM_OFF:
5582	return D3DTTFF_DISABLE;
5583	case SVGA3D_TEX_TRANSFORM_S:
5584	return D3DTTFF_COUNT1; /** @todo correct? */
5585	case SVGA3D_TEX_TRANSFORM_T:
5586	return D3DTTFF_COUNT2; /** @todo correct? */
5587	case SVGA3D_TEX_TRANSFORM_R:
5588	return D3DTTFF_COUNT3; /** @todo correct? */
5589	case SVGA3D_TEX_TRANSFORM_Q:
5590	return D3DTTFF_COUNT4; /** @todo correct? */
5591	case SVGA3D_TEX_PROJECTED:
5592	return D3DTTFF_PROJECTED;
5593	default:
5594	AssertFailed();
5595	return 0;
5596	}
5597	}
5598	#endif
5599
5600	static GLenum vmsvga3dTextureAddress2OGL(SVGA3dTextureAddress value)
5601	{
5602	switch (value)
5603	{
5604	case SVGA3D_TEX_ADDRESS_WRAP:
5605	return GL_REPEAT;
5606	case SVGA3D_TEX_ADDRESS_MIRROR:
5607	return GL_MIRRORED_REPEAT;
5608	case SVGA3D_TEX_ADDRESS_CLAMP:
5609	return GL_CLAMP_TO_EDGE;
5610	case SVGA3D_TEX_ADDRESS_BORDER:
5611	return GL_CLAMP_TO_BORDER;
5612	case SVGA3D_TEX_ADDRESS_MIRRORONCE:
5613	AssertFailed();
5614	return GL_CLAMP_TO_EDGE_SGIS; /** @todo correct? */
5615
5616	case SVGA3D_TEX_ADDRESS_EDGE:
5617	case SVGA3D_TEX_ADDRESS_INVALID:
5618	default:
5619	AssertFailed();
5620	return GL_REPEAT; /* default */
5621	}
5622	}
5623
5624	static GLenum vmsvga3dTextureFilter2OGL(SVGA3dTextureFilter value)
5625	{
5626	switch (value)
5627	{
5628	case SVGA3D_TEX_FILTER_NONE:
5629	case SVGA3D_TEX_FILTER_LINEAR:
5630	case SVGA3D_TEX_FILTER_ANISOTROPIC: /* Anisotropic filtering is controlled by SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL */
5631	return GL_LINEAR;
5632	case SVGA3D_TEX_FILTER_NEAREST:
5633	return GL_NEAREST;
5634	case SVGA3D_TEX_FILTER_FLATCUBIC: // Deprecated, not implemented
5635	case SVGA3D_TEX_FILTER_GAUSSIANCUBIC: // Deprecated, not implemented
5636	case SVGA3D_TEX_FILTER_PYRAMIDALQUAD: // Not currently implemented
5637	case SVGA3D_TEX_FILTER_GAUSSIANQUAD: // Not currently implemented
5638	default:
5639	AssertFailed();
5640	return GL_LINEAR; /* default */
5641	}
5642	}
5643
5644	uint32_t vmsvga3dSVGA3dColor2RGBA(SVGA3dColor value)
5645	{
5646	/* flip the red and blue bytes */
5647	uint8_t blue = value & 0xff;
5648	uint8_t red = (value >> 16) & 0xff;
5649	return (value & 0xff00ff00) \| red \| (blue << 16);
5650	}
5651
5652	static DECLCALLBACK(int) vmsvga3dBackSetTextureState(PVGASTATECC pThisCC, uint32_t cid, uint32_t cTextureStates, SVGA3dTextureState *pTextureState)
5653	{
5654	GLenum val = ~(GLenum)0; /* Shut up MSC. */
5655	GLenum currentStage = ~(GLenum)0;
5656	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5657	AssertReturn(pState, VERR_NO_MEMORY);
5658
5659	Log(("vmsvga3dSetTextureState %x cTextureState=%d\n", cid, cTextureStates));
5660
5661	PVMSVGA3DCONTEXT pContext;
5662	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5663	AssertRCReturn(rc, rc);
5664
5665	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5666
5667	/* Which texture is active for the current stage. Needed to use right OpenGL target when setting parameters. */
5668	PVMSVGA3DSURFACE pCurrentTextureSurface = NULL;
5669
5670	for (uint32_t i = 0; i < cTextureStates; ++i)
5671	{
5672	GLenum textureType = ~(GLenum)0;
5673	#if 0
5674	GLenum samplerType = ~(GLenum)0;
5675	#endif
5676
5677	LogFunc(("cid=%u stage=%d type=%s (%x) val=%x\n",
5678	cid, pTextureState[i].stage, vmsvga3dTextureStateToString(pTextureState[i].name), pTextureState[i].name, pTextureState[i].value));
5679
5680	/* Record the texture state for vm state saving. */
5681	if ( pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates)
5682	&& (unsigned)pTextureState[i].name < RT_ELEMENTS(pContext->state.aTextureStates[0]))
5683	{
5684	pContext->state.aTextureStates[pTextureState[i].stage][pTextureState[i].name] = pTextureState[i];
5685	}
5686
5687	/* Activate the right texture unit for subsequent texture state changes. */
5688	if (pTextureState[i].stage != currentStage \|\| i == 0)
5689	{
5690	/** @todo Is this the appropriate limit for all kinds of textures? It is the
5691	* size of aSidActiveTextures and for binding/unbinding we cannot exceed it. */
5692	if (pTextureState[i].stage < RT_ELEMENTS(pContext->state.aTextureStates))
5693	{
5694	pState->ext.glActiveTexture(GL_TEXTURE0 + pTextureState[i].stage);
5695	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5696	currentStage = pTextureState[i].stage;
5697	}
5698	else
5699	{
5700	AssertMsgFailed(("pTextureState[%d].stage=%#x name=%#x\n", i, pTextureState[i].stage, pTextureState[i].name));
5701	continue;
5702	}
5703
5704	if (pContext->aSidActiveTextures[currentStage] != SVGA3D_INVALID_ID)
5705	{
5706	rc = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[currentStage], &pCurrentTextureSurface);
5707	AssertRCReturn(rc, rc);
5708	}
5709	else
5710	pCurrentTextureSurface = NULL; /* Make sure that no stale pointer is used. */
5711	}
5712
5713	switch (pTextureState[i].name)
5714	{
5715	case SVGA3D_TS_BUMPENVMAT00: /* float */
5716	case SVGA3D_TS_BUMPENVMAT01: /* float */
5717	case SVGA3D_TS_BUMPENVMAT10: /* float */
5718	case SVGA3D_TS_BUMPENVMAT11: /* float */
5719	case SVGA3D_TS_BUMPENVLSCALE: /* float */
5720	case SVGA3D_TS_BUMPENVLOFFSET: /* float */
5721	Log(("vmsvga3dSetTextureState: bump mapping texture options not supported!!\n"));
5722	break;
5723
5724	case SVGA3D_TS_COLOROP: /* SVGA3dTextureCombiner */
5725	case SVGA3D_TS_COLORARG0: /* SVGA3dTextureArgData */
5726	case SVGA3D_TS_COLORARG1: /* SVGA3dTextureArgData */
5727	case SVGA3D_TS_COLORARG2: /* SVGA3dTextureArgData */
5728	case SVGA3D_TS_ALPHAOP: /* SVGA3dTextureCombiner */
5729	case SVGA3D_TS_ALPHAARG0: /* SVGA3dTextureArgData */
5730	case SVGA3D_TS_ALPHAARG1: /* SVGA3dTextureArgData */
5731	case SVGA3D_TS_ALPHAARG2: /* SVGA3dTextureArgData */
5732	/** @todo not used by MesaGL */
5733	Log(("vmsvga3dSetTextureState: colorop/alphaop not yet supported!!\n"));
5734	break;
5735	#if 0
5736
5737	case SVGA3D_TS_TEXCOORDINDEX: /* uint32_t */
5738	textureType = D3DTSS_TEXCOORDINDEX;
5739	val = pTextureState[i].value;
5740	break;
5741
5742	case SVGA3D_TS_TEXTURETRANSFORMFLAGS: /* SVGA3dTexTransformFlags */
5743	textureType = D3DTSS_TEXTURETRANSFORMFLAGS;
5744	val = vmsvga3dTextTransformFlags2D3D(pTextureState[i].value);
5745	break;
5746	#endif
5747
5748	case SVGA3D_TS_BIND_TEXTURE: /* SVGA3dSurfaceId */
5749	{
5750	uint32_t const sid = pTextureState[i].value;
5751
5752	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u replacing sid=%u\n",
5753	currentStage, sid, pContext->aSidActiveTextures[currentStage]));
5754
5755	/* Only if texture actually changed. */ /// @todo needs testing.
5756	if (pContext->aSidActiveTextures[currentStage] != sid)
5757	{
5758	if (pCurrentTextureSurface)
5759	{
5760	/* Unselect the currently associated texture. */
5761	glBindTexture(pCurrentTextureSurface->targetGL, 0);
5762	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5763
5764	if (currentStage < 8)
5765	{
5766	/* Necessary for the fixed pipeline. */
5767	glDisable(pCurrentTextureSurface->targetGL);
5768	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5769	}
5770
5771	pCurrentTextureSurface = NULL;
5772	}
5773
5774	if (sid == SVGA3D_INVALID_ID)
5775	{
5776	Assert(pCurrentTextureSurface == NULL);
5777	}
5778	else
5779	{
5780	PVMSVGA3DSURFACE pSurface;
5781	rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
5782	AssertRCReturn(rc, rc);
5783
5784	Log(("SVGA3D_TS_BIND_TEXTURE: stage %d, texture sid=%u (%d,%d) replacing sid=%u\n",
5785	currentStage, sid, pSurface->paMipmapLevels[0].mipmapSize.width,
5786	pSurface->paMipmapLevels[0].mipmapSize.height, pContext->aSidActiveTextures[currentStage]));
5787
5788	if (pSurface->oglId.texture == OPENGL_INVALID_ID)
5789	{
5790	Log(("CreateTexture (%d,%d) levels=%d\n",
5791	pSurface->paMipmapLevels[0].mipmapSize.width, pSurface->paMipmapLevels[0].mipmapSize.height, pSurface->cLevels));
5792	rc = vmsvga3dBackCreateTexture(pThisCC, pContext, cid, pSurface);
5793	AssertRCReturn(rc, rc);
5794	}
5795
5796	glBindTexture(pSurface->targetGL, pSurface->oglId.texture);
5797	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5798
5799	if (currentStage < 8)
5800	{
5801	/* Necessary for the fixed pipeline. */
5802	glEnable(pSurface->targetGL);
5803	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5804	}
5805
5806	/* Remember the currently active texture. */
5807	pCurrentTextureSurface = pSurface;
5808
5809	/* Recreate the texture state as glBindTexture resets them all (sigh). */
5810	for (uint32_t iStage = 0; iStage < RT_ELEMENTS(pContext->state.aTextureStates); iStage++)
5811	{
5812	for (uint32_t j = 0; j < RT_ELEMENTS(pContext->state.aTextureStates[0]); j++)
5813	{
5814	SVGA3dTextureState *pTextureStateIter = &pContext->state.aTextureStates[iStage][j];
5815
5816	if ( pTextureStateIter->name != SVGA3D_TS_INVALID
5817	&& pTextureStateIter->name != SVGA3D_TS_BIND_TEXTURE)
5818	vmsvga3dBackSetTextureState(pThisCC, pContext->id, 1, pTextureStateIter);
5819	}
5820	}
5821	}
5822
5823	pContext->aSidActiveTextures[currentStage] = sid;
5824	}
5825
5826	/* Finished; continue with the next one. */
5827	continue;
5828	}
5829
5830	case SVGA3D_TS_ADDRESSW: /* SVGA3dTextureAddress */
5831	textureType = GL_TEXTURE_WRAP_R; /* R = W */
5832	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5833	break;
5834
5835	case SVGA3D_TS_ADDRESSU: /* SVGA3dTextureAddress */
5836	textureType = GL_TEXTURE_WRAP_S; /* S = U */
5837	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5838	break;
5839
5840	case SVGA3D_TS_ADDRESSV: /* SVGA3dTextureAddress */
5841	textureType = GL_TEXTURE_WRAP_T; /* T = V */
5842	val = vmsvga3dTextureAddress2OGL((SVGA3dTextureAddress)pTextureState[i].value);
5843	break;
5844
5845	case SVGA3D_TS_MIPFILTER: /* SVGA3dTextureFilter */
5846	case SVGA3D_TS_MINFILTER: /* SVGA3dTextureFilter */
5847	{
5848	uint32_t mipFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MIPFILTER].value;
5849	uint32_t minFilter = pContext->state.aTextureStates[currentStage][SVGA3D_TS_MINFILTER].value;
5850
5851	/* If SVGA3D_TS_MIPFILTER is set to NONE, then use SVGA3D_TS_MIPFILTER, otherwise SVGA3D_TS_MIPFILTER enables mipmap minification. */
5852	textureType = GL_TEXTURE_MIN_FILTER;
5853	if (mipFilter != SVGA3D_TEX_FILTER_NONE)
5854	{
5855	if (minFilter == SVGA3D_TEX_FILTER_NEAREST)
5856	{
5857	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5858	val = GL_NEAREST_MIPMAP_LINEAR;
5859	else
5860	val = GL_NEAREST_MIPMAP_NEAREST;
5861	}
5862	else
5863	{
5864	if (mipFilter == SVGA3D_TEX_FILTER_LINEAR)
5865	val = GL_LINEAR_MIPMAP_LINEAR;
5866	else
5867	val = GL_LINEAR_MIPMAP_NEAREST;
5868	}
5869	}
5870	else
5871	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)minFilter);
5872	break;
5873	}
5874
5875	case SVGA3D_TS_MAGFILTER: /* SVGA3dTextureFilter */
5876	textureType = GL_TEXTURE_MAG_FILTER;
5877	val = vmsvga3dTextureFilter2OGL((SVGA3dTextureFilter)pTextureState[i].value);
5878	Assert(val == GL_NEAREST \|\| val == GL_LINEAR);
5879	break;
5880
5881	case SVGA3D_TS_BORDERCOLOR: /* SVGA3dColor */
5882	{
5883	GLfloat color[4]; /* red, green, blue, alpha */
5884	vmsvgaColor2GLFloatArray(pTextureState[i].value, &color[0], &color[1], &color[2], &color[3]);
5885
5886	GLenum targetGL;
5887	if (pCurrentTextureSurface)
5888	targetGL = pCurrentTextureSurface->targetGL;
5889	else
5890	{
5891	/* No texture bound, assume 2D. */
5892	targetGL = GL_TEXTURE_2D;
5893	}
5894
5895	glTexParameterfv(targetGL, GL_TEXTURE_BORDER_COLOR, color); /* Identical; default 0.0 identical too */
5896	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5897	break;
5898	}
5899
5900	case SVGA3D_TS_TEXTURE_LOD_BIAS: /* float */
5901	{
5902	GLenum targetGL;
5903	if (pCurrentTextureSurface)
5904	targetGL = pCurrentTextureSurface->targetGL;
5905	else
5906	{
5907	/* No texture bound, assume 2D. */
5908	targetGL = GL_TEXTURE_2D;
5909	}
5910
5911	glTexParameterf(targetGL, GL_TEXTURE_LOD_BIAS, pTextureState[i].floatValue); /* Identical; default 0.0 identical too */
5912	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5913	break;
5914	}
5915
5916	case SVGA3D_TS_TEXTURE_MIPMAP_LEVEL: /* uint32_t */
5917	textureType = GL_TEXTURE_BASE_LEVEL;
5918	val = pTextureState[i].value;
5919	break;
5920
5921	case SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL: /* uint32_t */
5922	if (pState->caps.fTextureFilterAnisotropicSupported)
5923	{
5924	textureType = GL_TEXTURE_MAX_ANISOTROPY_EXT;
5925	val = RT_MIN((GLint)pTextureState[i].value, pState->caps.maxTextureAnisotropy);
5926	} /* otherwise ignore. */
5927	break;
5928
5929	#if 0
5930	case SVGA3D_TS_GAMMA: /* float */
5931	samplerType = D3DSAMP_SRGBTEXTURE;
5932	/* Boolean in D3D */
5933	if (pTextureState[i].floatValue == 1.0f)
5934	val = FALSE;
5935	else
5936	val = TRUE;
5937	break;
5938	#endif
5939	/* Internal commands, that don't map directly to the SetTextureStageState API. */
5940	case SVGA3D_TS_TEXCOORDGEN: /* SVGA3dTextureCoordGen */
5941	AssertFailed();
5942	break;
5943
5944	default:
5945	//AssertFailed();
5946	break;
5947	}
5948
5949	if (textureType != ~(GLenum)0)
5950	{
5951	GLenum targetGL;
5952	if (pCurrentTextureSurface)
5953	targetGL = pCurrentTextureSurface->targetGL;
5954	else
5955	{
5956	/* No texture bound, assume 2D. */
5957	targetGL = GL_TEXTURE_2D;
5958	}
5959
5960	switch (pTextureState[i].name)
5961	{
5962	case SVGA3D_TS_MINFILTER:
5963	case SVGA3D_TS_MAGFILTER:
5964	{
5965	if (pState->caps.fTextureFilterAnisotropicSupported)
5966	{
5967	uint32_t const anisotropyLevel = (SVGA3dTextureFilter)pTextureState[i].value == SVGA3D_TEX_FILTER_ANISOTROPIC
5968	? RT_MAX(1, pContext->state.aTextureStates[currentStage][SVGA3D_TS_TEXTURE_ANISOTROPIC_LEVEL].value)
5969	: 1;
5970	glTexParameteri(targetGL, GL_TEXTURE_MAX_ANISOTROPY_EXT, RT_MIN((GLint)anisotropyLevel, pState->caps.maxTextureAnisotropy));
5971	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5972	}
5973	} break;
5974
5975	default: break;
5976	}
5977
5978	glTexParameteri(targetGL, textureType, val);
5979	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
5980	}
5981	}
5982
5983	return VINF_SUCCESS;
5984	}
5985
5986	static DECLCALLBACK(int) vmsvga3dBackSetMaterial(PVGASTATECC pThisCC, uint32_t cid, SVGA3dFace face, SVGA3dMaterial *pMaterial)
5987	{
5988	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
5989	AssertReturn(pState, VERR_NO_MEMORY);
5990
5991	LogFunc(("cid=%u face %d\n", cid, face));
5992
5993	PVMSVGA3DCONTEXT pContext;
5994	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
5995	AssertRCReturn(rc, rc);
5996
5997	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
5998
5999	GLenum oglFace;
6000	switch (face)
6001	{
6002	case SVGA3D_FACE_NONE:
6003	case SVGA3D_FACE_FRONT:
6004	oglFace = GL_FRONT;
6005	break;
6006
6007	case SVGA3D_FACE_BACK:
6008	oglFace = GL_BACK;
6009	break;
6010
6011	case SVGA3D_FACE_FRONT_BACK:
6012	oglFace = GL_FRONT_AND_BACK;
6013	break;
6014
6015	default:
6016	AssertFailedReturn(VERR_INVALID_PARAMETER);
6017	}
6018
6019	/* Save for vm state save/restore. */
6020	pContext->state.aMaterial[face].fValid = true;
6021	pContext->state.aMaterial[face].material = *pMaterial;
6022	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_MATERIAL;
6023
6024	glMaterialfv(oglFace, GL_DIFFUSE, pMaterial->diffuse);
6025	glMaterialfv(oglFace, GL_AMBIENT, pMaterial->ambient);
6026	glMaterialfv(oglFace, GL_SPECULAR, pMaterial->specular);
6027	glMaterialfv(oglFace, GL_EMISSION, pMaterial->emissive);
6028	glMaterialfv(oglFace, GL_SHININESS, &pMaterial->shininess);
6029	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6030
6031	return VINF_SUCCESS;
6032	}
6033
6034	/** @todo Move into separate library as we are using logic from Wine here. */
6035	static DECLCALLBACK(int) vmsvga3dBackSetLightData(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, SVGA3dLightData *pData)
6036	{
6037	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6038	AssertReturn(pState, VERR_NO_MEMORY);
6039
6040	LogFunc(("vmsvga3dSetLightData cid=%u index=%d type=%d\n", cid, index, pData->type));
6041	ASSERT_GUEST_RETURN(index < SVGA3D_MAX_LIGHTS, VERR_INVALID_PARAMETER);
6042
6043	PVMSVGA3DCONTEXT pContext;
6044	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6045	AssertRCReturn(rc, rc);
6046
6047	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6048
6049	/* Store for vm state save/restore */
6050	pContext->state.aLightData[index].fValidData = true;
6051	pContext->state.aLightData[index].data = *pData;
6052
6053	if ( pData->attenuation0 < 0.0f
6054	\|\| pData->attenuation1 < 0.0f
6055	\|\| pData->attenuation2 < 0.0f)
6056	{
6057	Log(("vmsvga3dSetLightData: invalid negative attenuation values!!\n"));
6058	return VINF_SUCCESS; /* ignore; could crash the GL driver */
6059	}
6060
6061	/* Light settings are affected by the model view in OpenGL, the View transform in direct3d */
6062	glMatrixMode(GL_MODELVIEW);
6063	glPushMatrix();
6064	glLoadMatrixf(pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6065
6066	glLightfv(GL_LIGHT0 + index, GL_DIFFUSE, pData->diffuse);
6067	glLightfv(GL_LIGHT0 + index, GL_SPECULAR, pData->specular);
6068	glLightfv(GL_LIGHT0 + index, GL_AMBIENT, pData->ambient);
6069
6070	float QuadAttenuation;
6071	if (pData->range * pData->range >= FLT_MIN)
6072	QuadAttenuation = 1.4f / (pData->range * pData->range);
6073	else
6074	QuadAttenuation = 0.0f;
6075
6076	switch (pData->type)
6077	{
6078	case SVGA3D_LIGHTTYPE_POINT:
6079	{
6080	GLfloat position[4];
6081
6082	position[0] = pData->position[0];
6083	position[1] = pData->position[1];
6084	position[2] = pData->position[2];
6085	position[3] = 1.0f;
6086
6087	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6088	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6089
6090	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6091	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6092
6093	/* Attenuation - Are these right? guessing... */
6094	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6095	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6096
6097	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6098	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6099
6100	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6101	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6102
6103	/** @todo range */
6104	break;
6105	}
6106
6107	case SVGA3D_LIGHTTYPE_SPOT1:
6108	{
6109	GLfloat exponent;
6110	GLfloat position[4];
6111	const GLfloat pi = 4.0f * atanf(1.0f);
6112
6113	position[0] = pData->position[0];
6114	position[1] = pData->position[1];
6115	position[2] = pData->position[2];
6116	position[3] = 1.0f;
6117
6118	glLightfv(GL_LIGHT0 + index, GL_POSITION, position);
6119	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6120
6121	position[0] = pData->direction[0];
6122	position[1] = pData->direction[1];
6123	position[2] = pData->direction[2];
6124	position[3] = 1.0f;
6125
6126	glLightfv(GL_LIGHT0 + index, GL_SPOT_DIRECTION, position);
6127	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6128
6129	/*
6130	* opengl-ish and d3d-ish spot lights use too different models for the
6131	* light "intensity" as a function of the angle towards the main light direction,
6132	* so we only can approximate very roughly.
6133	* however spot lights are rather rarely used in games (if ever used at all).
6134	* furthermore if still used, probably nobody pays attention to such details.
6135	*/
6136	if (pData->falloff == 0)
6137	{
6138	/* Falloff = 0 is easy, because d3d's and opengl's spot light equations have the
6139	* falloff resp. exponent parameter as an exponent, so the spot light lighting
6140	* will always be 1.0 for both of them, and we don't have to care for the
6141	* rest of the rather complex calculation
6142	*/
6143	exponent = 0.0f;
6144	}
6145	else
6146	{
6147	float rho = pData->theta + (pData->phi - pData->theta) / (2 * pData->falloff);
6148	if (rho < 0.0001f)
6149	rho = 0.0001f;
6150	exponent = -0.3f/log(cos(rho/2));
6151	}
6152	if (exponent > 128.0f)
6153	exponent = 128.0f;
6154
6155	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, exponent);
6156	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6157
6158	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, pData->phi * 90.0 / pi);
6159	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6160
6161	/* Attenuation - Are these right? guessing... */
6162	glLightf(GL_LIGHT0 + index, GL_CONSTANT_ATTENUATION, pData->attenuation0);
6163	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6164
6165	glLightf(GL_LIGHT0 + index, GL_LINEAR_ATTENUATION, pData->attenuation1);
6166	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6167
6168	glLightf(GL_LIGHT0 + index, GL_QUADRATIC_ATTENUATION, (QuadAttenuation < pData->attenuation2) ? pData->attenuation2 : QuadAttenuation);
6169	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6170
6171	/** @todo range */
6172	break;
6173	}
6174
6175	case SVGA3D_LIGHTTYPE_DIRECTIONAL:
6176	{
6177	GLfloat position[4];
6178
6179	position[0] = -pData->direction[0];
6180	position[1] = -pData->direction[1];
6181	position[2] = -pData->direction[2];
6182	position[3] = 0.0f;
6183
6184	glLightfv(GL_LIGHT0 + index, GL_POSITION, position); /* Note gl uses w position of 0 for direction! */
6185	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6186
6187	glLightf(GL_LIGHT0 + index, GL_SPOT_CUTOFF, 180.0f);
6188	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6189
6190	glLightf(GL_LIGHT0 + index, GL_SPOT_EXPONENT, 0.0f);
6191	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6192	break;
6193	}
6194
6195	case SVGA3D_LIGHTTYPE_SPOT2:
6196	default:
6197	Log(("Unsupported light type!!\n"));
6198	rc = VERR_INVALID_PARAMETER;
6199	break;
6200	}
6201
6202	/* Restore the modelview matrix */
6203	glPopMatrix();
6204
6205	return rc;
6206	}
6207
6208	static DECLCALLBACK(int) vmsvga3dBackSetLightEnabled(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, uint32_t enabled)
6209	{
6210	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6211	AssertReturn(pState, VERR_NO_MEMORY);
6212
6213	LogFunc(("cid=%u %d -> %d\n", cid, index, enabled));
6214
6215	PVMSVGA3DCONTEXT pContext;
6216	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6217	AssertRCReturn(rc, rc);
6218
6219	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6220
6221	/* Store for vm state save/restore */
6222	if (index < SVGA3D_MAX_LIGHTS)
6223	pContext->state.aLightData[index].fEnabled = !!enabled;
6224	else
6225	AssertFailed();
6226
6227	if (enabled)
6228	{
6229	if (index < SVGA3D_MAX_LIGHTS)
6230	{
6231	/* Load the default settings if none have been set yet. */
6232	if (!pContext->state.aLightData[index].fValidData)
6233	vmsvga3dBackSetLightData(pThisCC, cid, index, (SVGA3dLightData *)&vmsvga3d_default_light);
6234	}
6235	glEnable(GL_LIGHT0 + index);
6236	}
6237	else
6238	glDisable(GL_LIGHT0 + index);
6239
6240	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6241	return VINF_SUCCESS;
6242	}
6243
6244	static DECLCALLBACK(int) vmsvga3dBackSetViewPort(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6245	{
6246	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6247	AssertReturn(pState, VERR_NO_MEMORY);
6248
6249	Log(("vmsvga3dSetViewPort cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6250
6251	PVMSVGA3DCONTEXT pContext;
6252	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6253	AssertRCReturn(rc, rc);
6254
6255	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6256
6257	/* Save for vm state save/restore. */
6258	pContext->state.RectViewPort = *pRect;
6259	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VIEWPORT;
6260
6261	/** @todo y-inversion for partial viewport coordinates? */
6262	glViewport(pRect->x, pRect->y, pRect->w, pRect->h);
6263	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6264
6265	/* Reset the projection matrix as that relies on the viewport setting. */
6266	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6267	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION,
6268	pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6269	else
6270	{
6271	float matrix[16];
6272
6273	/* identity matrix if no matrix set. */
6274	memset(matrix, 0, sizeof(matrix));
6275	matrix[0] = 1.0;
6276	matrix[5] = 1.0;
6277	matrix[10] = 1.0;
6278	matrix[15] = 1.0;
6279	vmsvga3dBackSetTransform(pThisCC, cid, SVGA3D_TRANSFORM_PROJECTION, matrix);
6280	}
6281
6282	return VINF_SUCCESS;
6283	}
6284
6285	static DECLCALLBACK(int) vmsvga3dBackSetClipPlane(PVGASTATECC pThisCC, uint32_t cid, uint32_t index, float plane[4])
6286	{
6287	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6288	AssertReturn(pState, VERR_NO_MEMORY);
6289	double oglPlane[4];
6290
6291	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)));
6292	AssertReturn(index < SVGA3D_NUM_CLIPPLANES, VERR_INVALID_PARAMETER);
6293
6294	PVMSVGA3DCONTEXT pContext;
6295	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6296	AssertRCReturn(rc, rc);
6297
6298	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6299
6300	/* Store for vm state save/restore. */
6301	pContext->state.aClipPlane[index].fValid = true;
6302	memcpy(pContext->state.aClipPlane[index].plane, plane, sizeof(pContext->state.aClipPlane[index].plane));
6303
6304	/** @todo clip plane affected by model view in OpenGL & view in D3D + vertex shader -> not transformed (see Wine; state.c clipplane) */
6305	oglPlane[0] = (double)plane[0];
6306	oglPlane[1] = (double)plane[1];
6307	oglPlane[2] = (double)plane[2];
6308	oglPlane[3] = (double)plane[3];
6309
6310	glClipPlane(GL_CLIP_PLANE0 + index, oglPlane);
6311	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6312
6313	return VINF_SUCCESS;
6314	}
6315
6316	static DECLCALLBACK(int) vmsvga3dBackSetScissorRect(PVGASTATECC pThisCC, uint32_t cid, SVGA3dRect *pRect)
6317	{
6318	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6319	AssertReturn(pState, VERR_NO_MEMORY);
6320
6321	Log(("vmsvga3dSetScissorRect cid=%u (%d,%d)(%d,%d)\n", cid, pRect->x, pRect->y, pRect->w, pRect->h));
6322
6323	PVMSVGA3DCONTEXT pContext;
6324	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6325	AssertRCReturn(rc, rc);
6326
6327	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6328
6329	/* Store for vm state save/restore. */
6330	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_SCISSORRECT;
6331	pContext->state.RectScissor = *pRect;
6332
6333	glScissor(pRect->x, pRect->y, pRect->w, pRect->h);
6334	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6335
6336	return VINF_SUCCESS;
6337	}
6338
6339	static void vmsvgaColor2GLFloatArray(uint32_t color, GLfloat pRed, GLfloat pGreen, GLfloat pBlue, GLfloat pAlpha)
6340	{
6341	/* Convert byte color components to float (0-1.0) */
6342	*pAlpha = (GLfloat)(color >> 24) / 255.0;
6343	*pRed = (GLfloat)((color >> 16) & 0xff) / 255.0;
6344	*pGreen = (GLfloat)((color >> 8) & 0xff) / 255.0;
6345	*pBlue = (GLfloat)(color & 0xff) / 255.0;
6346	}
6347
6348	static DECLCALLBACK(int) vmsvga3dBackCommandClear(PVGASTATECC pThisCC, uint32_t cid, SVGA3dClearFlag clearFlag, uint32_t color, float depth, uint32_t stencil,
6349	uint32_t cRects, SVGA3dRect *pRect)
6350	{
6351	GLbitfield mask = 0;
6352	GLbitfield restoreMask = 0;
6353	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6354	AssertReturn(pState, VERR_NO_MEMORY);
6355	GLboolean fDepthWriteEnabled = GL_FALSE;
6356	GLboolean afColorWriteEnabled[4] = { GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE };
6357
6358	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));
6359
6360	PVMSVGA3DCONTEXT pContext;
6361	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
6362	AssertRCReturn(rc, rc);
6363
6364	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6365
6366	if (clearFlag & SVGA3D_CLEAR_COLOR)
6367	{
6368	GLfloat red, green, blue, alpha;
6369	vmsvgaColor2GLFloatArray(color, &red, &green, &blue, &alpha);
6370
6371	/* Set the color clear value. */
6372	glClearColor(red, green, blue, alpha);
6373	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6374
6375	mask \|= GL_COLOR_BUFFER_BIT;
6376
6377	/* glClear will not clear the color buffer if writing is disabled. */
6378	glGetBooleanv(GL_COLOR_WRITEMASK, afColorWriteEnabled);
6379	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6380	if ( afColorWriteEnabled[0] == GL_FALSE
6381	\|\| afColorWriteEnabled[1] == GL_FALSE
6382	\|\| afColorWriteEnabled[2] == GL_FALSE
6383	\|\| afColorWriteEnabled[3] == GL_FALSE)
6384	{
6385	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
6386	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6387
6388	restoreMask \|= GL_COLOR_BUFFER_BIT;
6389	}
6390
6391	}
6392
6393	if (clearFlag & SVGA3D_CLEAR_STENCIL)
6394	{
6395	/** @todo possibly the same problem as with glDepthMask */
6396	glClearStencil(stencil);
6397	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6398
6399	mask \|= GL_STENCIL_BUFFER_BIT;
6400	}
6401
6402	if (clearFlag & SVGA3D_CLEAR_DEPTH)
6403	{
6404	glClearDepth((GLdouble)depth);
6405	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6406
6407	mask \|= GL_DEPTH_BUFFER_BIT;
6408
6409	/* glClear will not clear the depth buffer if writing is disabled. */
6410	glGetBooleanv(GL_DEPTH_WRITEMASK, &fDepthWriteEnabled);
6411	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6412	if (fDepthWriteEnabled == GL_FALSE)
6413	{
6414	glDepthMask(GL_TRUE);
6415	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6416
6417	restoreMask \|= GL_DEPTH_BUFFER_BIT;
6418	}
6419	}
6420
6421	/* Save the current scissor test bit and scissor box. */
6422	glPushAttrib(GL_SCISSOR_BIT);
6423	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6424
6425	if (cRects)
6426	{
6427	glEnable(GL_SCISSOR_TEST);
6428	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6429
6430	for (uint32_t i = 0; i < cRects; ++i)
6431	{
6432	LogFunc(("rect [%d] %d,%d %dx%d)\n", i, pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h));
6433	glScissor(pRect[i].x, pRect[i].y, pRect[i].w, pRect[i].h);
6434	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6435
6436	glClear(mask);
6437	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6438	}
6439	}
6440	else
6441	{
6442	glDisable(GL_SCISSOR_TEST);
6443	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6444
6445	glClear(mask);
6446	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6447	}
6448
6449	/* Restore the old scissor test bit and box */
6450	glPopAttrib();
6451	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6452
6453	/* Restore the write states. */
6454	if (restoreMask & GL_COLOR_BUFFER_BIT)
6455	{
6456	glColorMask(afColorWriteEnabled[0],
6457	afColorWriteEnabled[1],
6458	afColorWriteEnabled[2],
6459	afColorWriteEnabled[3]);
6460	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6461	}
6462
6463	if (restoreMask & GL_DEPTH_BUFFER_BIT)
6464	{
6465	glDepthMask(fDepthWriteEnabled);
6466	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6467	}
6468
6469	return VINF_SUCCESS;
6470	}
6471
6472	/* Convert VMWare vertex declaration to its OpenGL equivalent. */
6473	int vmsvga3dVertexDecl2OGL(SVGA3dVertexArrayIdentity &identity, GLint &size, GLenum &type, GLboolean &normalized, uint32_t &cbAttrib)
6474	{
6475	normalized = GL_FALSE;
6476	switch (identity.type)
6477	{
6478	case SVGA3D_DECLTYPE_FLOAT1:
6479	size = 1;
6480	type = GL_FLOAT;
6481	cbAttrib = sizeof(float);
6482	break;
6483	case SVGA3D_DECLTYPE_FLOAT2:
6484	size = 2;
6485	type = GL_FLOAT;
6486	cbAttrib = 2 * sizeof(float);
6487	break;
6488	case SVGA3D_DECLTYPE_FLOAT3:
6489	size = 3;
6490	type = GL_FLOAT;
6491	cbAttrib = 3 * sizeof(float);
6492	break;
6493	case SVGA3D_DECLTYPE_FLOAT4:
6494	size = 4;
6495	type = GL_FLOAT;
6496	cbAttrib = 4 * sizeof(float);
6497	break;
6498
6499	case SVGA3D_DECLTYPE_D3DCOLOR:
6500	size = GL_BGRA; /* @note requires GL_ARB_vertex_array_bgra */
6501	type = GL_UNSIGNED_BYTE;
6502	normalized = GL_TRUE; /* glVertexAttribPointer fails otherwise */
6503	cbAttrib = sizeof(uint32_t);
6504	break;
6505
6506	case SVGA3D_DECLTYPE_UBYTE4N:
6507	normalized = GL_TRUE;
6508	RT_FALL_THRU();
6509	case SVGA3D_DECLTYPE_UBYTE4:
6510	size = 4;
6511	type = GL_UNSIGNED_BYTE;
6512	cbAttrib = sizeof(uint32_t);
6513	break;
6514
6515	case SVGA3D_DECLTYPE_SHORT2N:
6516	normalized = GL_TRUE;
6517	RT_FALL_THRU();
6518	case SVGA3D_DECLTYPE_SHORT2:
6519	size = 2;
6520	type = GL_SHORT;
6521	cbAttrib = 2 * sizeof(uint16_t);
6522	break;
6523
6524	case SVGA3D_DECLTYPE_SHORT4N:
6525	normalized = GL_TRUE;
6526	RT_FALL_THRU();
6527	case SVGA3D_DECLTYPE_SHORT4:
6528	size = 4;
6529	type = GL_SHORT;
6530	cbAttrib = 4 * sizeof(uint16_t);
6531	break;
6532
6533	case SVGA3D_DECLTYPE_USHORT4N:
6534	normalized = GL_TRUE;
6535	size = 4;
6536	type = GL_UNSIGNED_SHORT;
6537	cbAttrib = 4 * sizeof(uint16_t);
6538	break;
6539
6540	case SVGA3D_DECLTYPE_USHORT2N:
6541	normalized = GL_TRUE;
6542	size = 2;
6543	type = GL_UNSIGNED_SHORT;
6544	cbAttrib = 2 * sizeof(uint16_t);
6545	break;
6546
6547	case SVGA3D_DECLTYPE_UDEC3:
6548	size = 3;
6549	type = GL_UNSIGNED_INT_2_10_10_10_REV; /** @todo correct? */
6550	cbAttrib = sizeof(uint32_t);
6551	break;
6552
6553	case SVGA3D_DECLTYPE_DEC3N:
6554	normalized = true;
6555	size = 3;
6556	type = GL_INT_2_10_10_10_REV; /** @todo correct? */
6557	cbAttrib = sizeof(uint32_t);
6558	break;
6559
6560	case SVGA3D_DECLTYPE_FLOAT16_2:
6561	size = 2;
6562	type = GL_HALF_FLOAT;
6563	cbAttrib = 2 * sizeof(uint16_t);
6564	break;
6565	case SVGA3D_DECLTYPE_FLOAT16_4:
6566	size = 4;
6567	type = GL_HALF_FLOAT;
6568	cbAttrib = 4 * sizeof(uint16_t);
6569	break;
6570	default:
6571	AssertFailedReturn(VERR_INVALID_PARAMETER);
6572	}
6573
6574	//pVertexElement->Method = identity.method;
6575	//pVertexElement->Usage = identity.usage;
6576
6577	return VINF_SUCCESS;
6578	}
6579
6580	static float vmsvga3dFloat16To32(uint16_t f16)
6581	{
6582	/* From Wiki */
6583	#ifndef INFINITY
6584	static uint32_t const sBitsINFINITY = UINT32_C(0x7f800000);
6585	#define INFINITY ((float const )&sBitsINFINITY)
6586	#endif
6587	#ifndef NAN
6588	static uint32_t const sBitsNAN = UINT32_C(0x7fc00000);
6589	#define NAN ((float const )&sBitsNAN)
6590	#endif
6591
6592	uint16_t const s = (f16 >> UINT16_C(15)) & UINT16_C(0x1);
6593	uint16_t const e = (f16 >> UINT16_C(10)) & UINT16_C(0x1f);
6594	uint16_t const m = (f16 ) & UINT16_C(0x3ff);
6595
6596	float result = s ? 1.0f : -1.0f;
6597	if (e == 0)
6598	{
6599	if (m == 0)
6600	result = 0.0f; / zero, -0 */
6601	else
6602	result = (float)m / 1024.0f / 16384.0f; / subnormal numbers: sign * 2^-14 * 0.m */
6603	}
6604	else if (e == 0x1f)
6605	{
6606	if (m == 0)
6607	result = INFINITY; / +-infinity */
6608	else
6609	result = NAN; /* NAN */
6610	}
6611	else
6612	{
6613	result = powf(2.0f, (float)e - 15.0f) (1.0f + (float)m / 1024.0f); /* sign * 2^(e-15) * 1.m */
6614	}
6615
6616	return result;
6617	}
6618
6619	/* Set a vertex attribute according to VMSVGA vertex declaration. */
6620	static int vmsvga3dSetVertexAttrib(PVMSVGA3DSTATE pState, GLuint index, SVGA3dVertexArrayIdentity const pIdentity, GLvoid const pv)
6621	{
6622	switch (pIdentity->type)
6623	{
6624	case SVGA3D_DECLTYPE_FLOAT1:
6625	{
6626	/* "One-component float expanded to (float, 0, 0, 1)." */
6627	GLfloat const p = (GLfloat )pv;
6628	GLfloat const v[4] = { p[0], 0.0f, 0.0f, 1.0f };
6629	pState->ext.glVertexAttrib4fv(index, v);
6630	break;
6631	}
6632	case SVGA3D_DECLTYPE_FLOAT2:
6633	{
6634	/* "Two-component float expanded to (float, float, 0, 1)." */
6635	GLfloat const p = (GLfloat )pv;
6636	GLfloat const v[4] = { p[0], p[1], 0.0f, 1.0f };
6637	pState->ext.glVertexAttrib4fv(index, v);
6638	break;
6639	}
6640	case SVGA3D_DECLTYPE_FLOAT3:
6641	{
6642	/* "Three-component float expanded to (float, float, float, 1)." */
6643	GLfloat const p = (GLfloat )pv;
6644	GLfloat const v[4] = { p[0], p[1], p[2], 1.0f };
6645	pState->ext.glVertexAttrib4fv(index, v);
6646	break;
6647	}
6648	case SVGA3D_DECLTYPE_FLOAT4:
6649	pState->ext.glVertexAttrib4fv(index, (GLfloat const *)pv);
6650	break;
6651	case SVGA3D_DECLTYPE_D3DCOLOR:
6652	/** @todo Need to swap bytes? */
6653	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6654	break;
6655	case SVGA3D_DECLTYPE_UBYTE4:
6656	pState->ext.glVertexAttrib4ubv(index, (GLubyte const *)pv);
6657	break;
6658	case SVGA3D_DECLTYPE_SHORT2:
6659	{
6660	/* "Two-component, signed short expanded to (value, value, 0, 1)." */
6661	GLshort const p = (GLshort const )pv;
6662	GLshort const v[4] = { p[0], p[1], 0, 1 };
6663	pState->ext.glVertexAttrib4sv(index, v);
6664	break;
6665	}
6666	case SVGA3D_DECLTYPE_SHORT4:
6667	pState->ext.glVertexAttrib4sv(index, (GLshort const *)pv);
6668	break;
6669	case SVGA3D_DECLTYPE_UBYTE4N:
6670	pState->ext.glVertexAttrib4Nubv(index, (GLubyte const *)pv);
6671	break;
6672	case SVGA3D_DECLTYPE_SHORT2N:
6673	{
6674	/* "Normalized, two-component, signed short, expanded to (first short/32767.0, second short/32767.0, 0, 1)." */
6675	GLshort const p = (GLshort const )pv;
6676	GLshort const v[4] = { p[0], p[1], 0, 1 };
6677	pState->ext.glVertexAttrib4Nsv(index, v);
6678	break;
6679	}
6680	case SVGA3D_DECLTYPE_SHORT4N:
6681	pState->ext.glVertexAttrib4Nsv(index, (GLshort const *)pv);
6682	break;
6683	case SVGA3D_DECLTYPE_USHORT2N:
6684	{
6685	GLushort const p = (GLushort const )pv;
6686	GLushort const v[4] = { p[0], p[1], 0, 1 };
6687	pState->ext.glVertexAttrib4Nusv(index, v);
6688	break;
6689	}
6690	case SVGA3D_DECLTYPE_USHORT4N:
6691	pState->ext.glVertexAttrib4Nusv(index, (GLushort const *)pv);
6692	break;
6693	case SVGA3D_DECLTYPE_UDEC3:
6694	{
6695	/** @todo Test */
6696	/* "Three-component, unsigned, 10 10 10 format expanded to (value, value, value, 1)." */
6697	uint32_t const u32 = (uint32_t )pv;
6698	GLfloat const v[4] = { (float)(u32 & 0x3ff), (float)((u32 >> 10) & 0x3ff), (float)((u32 >> 20) & 0x3ff), 1.0f };
6699	pState->ext.glVertexAttrib4fv(index, v);
6700	break;
6701	}
6702	case SVGA3D_DECLTYPE_DEC3N:
6703	{
6704	/** @todo Test */
6705	/* "Three-component, signed, 10 10 10 format normalized and expanded to (v[0]/511.0, v[1]/511.0, v[2]/511.0, 1)." */
6706	uint32_t const u32 = (uint32_t )pv;
6707	GLfloat const v[4] = { (u32 & 0x3ff) / 511.0f, ((u32 >> 10) & 0x3ff) / 511.0f, ((u32 >> 20) & 0x3ff) / 511.0f, 1.0f };
6708	pState->ext.glVertexAttrib4fv(index, v);
6709	break;
6710	}
6711	case SVGA3D_DECLTYPE_FLOAT16_2:
6712	{
6713	/** @todo Test */
6714	/* "Two-component, 16-bit, floating point expanded to (value, value, 0, 1)." */
6715	uint16_t const p = (uint16_t )pv;
6716	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]), 0.0f, 1.0f };
6717	pState->ext.glVertexAttrib4fv(index, v);
6718	break;
6719	}
6720	case SVGA3D_DECLTYPE_FLOAT16_4:
6721	{
6722	/** @todo Test */
6723	uint16_t const p = (uint16_t )pv;
6724	GLfloat const v[4] = { vmsvga3dFloat16To32(p[0]), vmsvga3dFloat16To32(p[1]),
6725	vmsvga3dFloat16To32(p[2]), vmsvga3dFloat16To32(p[3]) };
6726	pState->ext.glVertexAttrib4fv(index, v);
6727	break;
6728	}
6729	default:
6730	AssertFailedReturn(VERR_INVALID_PARAMETER);
6731	}
6732
6733	return VINF_SUCCESS;
6734	}
6735
6736	/* Convert VMWare primitive type to its OpenGL equivalent. */
6737	/* Calculate the vertex count based on the primitive type and nr of primitives. */
6738	int vmsvga3dPrimitiveType2OGL(SVGA3dPrimitiveType PrimitiveType, GLenum pMode, uint32_t cPrimitiveCount, uint32_t pcVertices)
6739	{
6740	switch (PrimitiveType)
6741	{
6742	case SVGA3D_PRIMITIVE_TRIANGLELIST:
6743	*pMode = GL_TRIANGLES;
6744	pcVertices = cPrimitiveCount 3;
6745	break;
6746	case SVGA3D_PRIMITIVE_POINTLIST:
6747	*pMode = GL_POINTS;
6748	*pcVertices = cPrimitiveCount;
6749	break;
6750	case SVGA3D_PRIMITIVE_LINELIST:
6751	*pMode = GL_LINES;
6752	pcVertices = cPrimitiveCount 2;
6753	break;
6754	case SVGA3D_PRIMITIVE_LINESTRIP:
6755	*pMode = GL_LINE_STRIP;
6756	*pcVertices = cPrimitiveCount + 1;
6757	break;
6758	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
6759	*pMode = GL_TRIANGLE_STRIP;
6760	*pcVertices = cPrimitiveCount + 2;
6761	break;
6762	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
6763	*pMode = GL_TRIANGLE_FAN;
6764	*pcVertices = cPrimitiveCount + 2;
6765	break;
6766	default:
6767	return VERR_INVALID_PARAMETER;
6768	}
6769	return VINF_SUCCESS;
6770	}
6771
6772	static int vmsvga3dResetTransformMatrices(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
6773	{
6774	int rc;
6775
6776	/* Reset the view matrix (also takes the world matrix into account). */
6777	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].fValid == true)
6778	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW,
6779	pContext->state.aTransformState[SVGA3D_TRANSFORM_VIEW].matrix);
6780	else
6781	{
6782	float matrix[16];
6783
6784	/* identity matrix if no matrix set. */
6785	memset(matrix, 0, sizeof(matrix));
6786	matrix[0] = 1.0;
6787	matrix[5] = 1.0;
6788	matrix[10] = 1.0;
6789	matrix[15] = 1.0;
6790	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_VIEW, matrix);
6791	}
6792
6793	/* Reset the projection matrix. */
6794	if (pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].fValid == true)
6795	{
6796	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, pContext->state.aTransformState[SVGA3D_TRANSFORM_PROJECTION].matrix);
6797	}
6798	else
6799	{
6800	float matrix[16];
6801
6802	/* identity matrix if no matrix set. */
6803	memset(matrix, 0, sizeof(matrix));
6804	matrix[0] = 1.0;
6805	matrix[5] = 1.0;
6806	matrix[10] = 1.0;
6807	matrix[15] = 1.0;
6808	rc = vmsvga3dBackSetTransform(pThisCC, pContext->id, SVGA3D_TRANSFORM_PROJECTION, matrix);
6809	}
6810	AssertRC(rc);
6811	return rc;
6812	}
6813
6814	static int vmsvga3dDrawPrimitivesProcessVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext,
6815	uint32_t iVertexDeclBase, uint32_t numVertexDecls,
6816	SVGA3dVertexDecl *pVertexDecl,
6817	SVGA3dVertexDivisor const *paVertexDivisors)
6818	{
6819	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
6820	unsigned const sidVertex = pVertexDecl[0].array.surfaceId;
6821
6822	PVMSVGA3DSURFACE pVertexSurface;
6823	int rc = vmsvga3dSurfaceFromSid(pState, sidVertex, &pVertexSurface);
6824	AssertRCReturn(rc, rc);
6825
6826	Log(("vmsvga3dDrawPrimitives: vertex surface sid=%u\n", sidVertex));
6827
6828	/* Create and/or bind the vertex buffer. */
6829	if (pVertexSurface->oglId.buffer == OPENGL_INVALID_ID)
6830	{
6831	Log(("vmsvga3dDrawPrimitives: create vertex buffer fDirty=%d size=%x bytes\n", pVertexSurface->fDirty, pVertexSurface->paMipmapLevels[0].cbSurface));
6832	PVMSVGA3DCONTEXT pSavedCtx = pContext;
6833	pContext = &pState->SharedCtx;
6834	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6835
6836	pState->ext.glGenBuffers(1, &pVertexSurface->oglId.buffer);
6837	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6838	pVertexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
6839
6840	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6841	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6842
6843	Assert(pVertexSurface->fDirty);
6844	/** @todo rethink usage dynamic/static */
6845	pState->ext.glBufferData(GL_ARRAY_BUFFER, pVertexSurface->paMipmapLevels[0].cbSurface, pVertexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
6846	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6847
6848	pVertexSurface->paMipmapLevels[0].fDirty = false;
6849	pVertexSurface->fDirty = false;
6850
6851	pVertexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_VERTEXBUFFER;
6852
6853	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, OPENGL_INVALID_ID);
6854	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6855
6856	pContext = pSavedCtx;
6857	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
6858	}
6859
6860	Assert(pVertexSurface->fDirty == false);
6861	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pVertexSurface->oglId.buffer);
6862	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6863
6864	/* Setup the vertex declarations. */
6865	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
6866	{
6867	GLint size;
6868	GLenum type;
6869	GLboolean normalized;
6870	uint32_t cbAttrib;
6871	GLuint index = iVertexDeclBase + iVertex;
6872
6873	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));
6874
6875	rc = vmsvga3dVertexDecl2OGL(pVertexDecl[iVertex].identity, size, type, normalized, cbAttrib);
6876	AssertRCReturn(rc, rc);
6877
6878	ASSERT_GUEST_RETURN( pVertexSurface->paMipmapLevels[0].cbSurface >= pVertexDecl[iVertex].array.offset
6879	&& pVertexSurface->paMipmapLevels[0].cbSurface - pVertexDecl[iVertex].array.offset >= cbAttrib,
6880	VERR_INVALID_PARAMETER);
6881	RT_UNTRUSTED_VALIDATED_FENCE();
6882
6883	if (pContext->state.shidVertex != SVGA_ID_INVALID)
6884	{
6885	/* Use numbered vertex arrays (or attributes) when shaders are active. */
6886	if (pVertexDecl[iVertex].array.stride)
6887	{
6888	pState->ext.glEnableVertexAttribArray(index);
6889	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6890	pState->ext.glVertexAttribPointer(index, size, type, normalized, pVertexDecl[iVertex].array.stride,
6891	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6892	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6893
6894	GLuint divisor = paVertexDivisors && paVertexDivisors[index].instanceData ? 1 : 0;
6895	pState->ext.glVertexAttribDivisor(index, divisor);
6896	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6897
6898	/** @todo case SVGA3D_DECLUSAGE_COLOR: color component order not identical!! test GL_BGRA!! */
6899	}
6900	else
6901	{
6902	/*
6903	* D3D and OpenGL have a different meaning of value zero for the vertex array stride:
6904	* - D3D (VMSVGA): "use a zero stride to tell the runtime not to increment the vertex buffer offset."
6905	* - OpenGL: "If stride is 0, the generic vertex attributes are understood to be tightly packed in the array."
6906	* VMSVGA uses the D3D semantics.
6907	*
6908	* Use glVertexAttrib in order to tell OpenGL to reuse the zero stride attributes for each vertex.
6909	*/
6910	pState->ext.glDisableVertexAttribArray(index);
6911	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6912
6913	const GLvoid v = (uint8_t )pVertexSurface->paMipmapLevels[0].pSurfaceData + pVertexDecl[iVertex].array.offset;
6914	vmsvga3dSetVertexAttrib(pState, index, &pVertexDecl[iVertex].identity, v);
6915	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
6916	}
6917	}
6918	else
6919	{
6920	if (pVertexDecl[iVertex].array.stride == 0)
6921	{
6922	/* Zero stride means that the attribute pointer must not be increased.
6923	* See comment about stride in vmsvga3dDrawPrimitives.
6924	*/
6925	LogRelMax(8, ("VMSVGA: Warning: zero stride array in fixed function pipeline\n"));
6926	AssertFailed();
6927	}
6928
6929	/* Use the predefined selection of vertex streams for the fixed pipeline. */
6930	switch (pVertexDecl[iVertex].identity.usage)
6931	{
6932	case SVGA3D_DECLUSAGE_POSITIONT:
6933	case SVGA3D_DECLUSAGE_POSITION:
6934	{
6935	glEnableClientState(GL_VERTEX_ARRAY);
6936	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6937	glVertexPointer(size, type, pVertexDecl[iVertex].array.stride,
6938	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6939	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6940	break;
6941	}
6942	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
6943	AssertFailed();
6944	break;
6945	case SVGA3D_DECLUSAGE_BLENDINDICES:
6946	AssertFailed();
6947	break;
6948	case SVGA3D_DECLUSAGE_NORMAL:
6949	glEnableClientState(GL_NORMAL_ARRAY);
6950	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6951	glNormalPointer(type, pVertexDecl[iVertex].array.stride,
6952	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6953	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6954	break;
6955	case SVGA3D_DECLUSAGE_PSIZE:
6956	AssertFailed();
6957	break;
6958	case SVGA3D_DECLUSAGE_TEXCOORD:
6959	/* Specify the affected texture unit. */
6960	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
6961	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6962	#else
6963	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
6964	#endif
6965	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
6966	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6967	glTexCoordPointer(size, type, pVertexDecl[iVertex].array.stride,
6968	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6969	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6970	break;
6971	case SVGA3D_DECLUSAGE_TANGENT:
6972	AssertFailed();
6973	break;
6974	case SVGA3D_DECLUSAGE_BINORMAL:
6975	AssertFailed();
6976	break;
6977	case SVGA3D_DECLUSAGE_TESSFACTOR:
6978	AssertFailed();
6979	break;
6980	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! test GL_BGRA!! */
6981	glEnableClientState(GL_COLOR_ARRAY);
6982	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6983	glColorPointer(size, type, pVertexDecl[iVertex].array.stride,
6984	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6985	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6986	break;
6987	case SVGA3D_DECLUSAGE_FOG:
6988	glEnableClientState(GL_FOG_COORD_ARRAY);
6989	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6990	pState->ext.glFogCoordPointer(type, pVertexDecl[iVertex].array.stride,
6991	(const GLvoid *)(uintptr_t)pVertexDecl[iVertex].array.offset);
6992	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
6993	break;
6994	case SVGA3D_DECLUSAGE_DEPTH:
6995	AssertFailed();
6996	break;
6997	case SVGA3D_DECLUSAGE_SAMPLE:
6998	AssertFailed();
6999	break;
7000	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7001	}
7002	}
7003
7004	#ifdef LOG_ENABLED
7005	if (pVertexDecl[iVertex].array.stride == 0)
7006	Log(("vmsvga3dDrawPrimitives: stride == 0! Can be valid\n"));
7007	#endif
7008	}
7009
7010	return VINF_SUCCESS;
7011	}
7012
7013	static int vmsvga3dDrawPrimitivesCleanupVertexDecls(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t iVertexDeclBase,
7014	uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl)
7015	{
7016	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7017
7018	/* Clean up the vertex declarations. */
7019	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7020	{
7021	if (pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT)
7022	{
7023	/* Reset the transformation matrices in case of a switch back from pretransformed mode. */
7024	Log(("vmsvga3dDrawPrimitivesCleanupVertexDecls: reset world and projection matrices after transformation reset (pre-transformed -> transformed)\n"));
7025	vmsvga3dResetTransformMatrices(pThisCC, pContext);
7026	}
7027
7028	if (pContext->state.shidVertex != SVGA_ID_INVALID)
7029	{
7030	/* Use numbered vertex arrays when shaders are active. */
7031	pState->ext.glVertexAttribDivisor(iVertexDeclBase + iVertex, 0);
7032	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7033	pState->ext.glDisableVertexAttribArray(iVertexDeclBase + iVertex);
7034	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7035	}
7036	else
7037	{
7038	/* Use the predefined selection of vertex streams for the fixed pipeline. */
7039	switch (pVertexDecl[iVertex].identity.usage)
7040	{
7041	case SVGA3D_DECLUSAGE_POSITION:
7042	case SVGA3D_DECLUSAGE_POSITIONT:
7043	glDisableClientState(GL_VERTEX_ARRAY);
7044	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7045	break;
7046	case SVGA3D_DECLUSAGE_BLENDWEIGHT:
7047	break;
7048	case SVGA3D_DECLUSAGE_BLENDINDICES:
7049	break;
7050	case SVGA3D_DECLUSAGE_NORMAL:
7051	glDisableClientState(GL_NORMAL_ARRAY);
7052	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7053	break;
7054	case SVGA3D_DECLUSAGE_PSIZE:
7055	break;
7056	case SVGA3D_DECLUSAGE_TEXCOORD:
7057	/* Specify the affected texture unit. */
7058	#if VBOX_VMSVGA3D_GL_HACK_LEVEL >= 0x103
7059	glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7060	#else
7061	pState->ext.glClientActiveTexture(GL_TEXTURE0 + pVertexDecl[iVertex].identity.usageIndex);
7062	#endif
7063	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
7064	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7065	break;
7066	case SVGA3D_DECLUSAGE_TANGENT:
7067	break;
7068	case SVGA3D_DECLUSAGE_BINORMAL:
7069	break;
7070	case SVGA3D_DECLUSAGE_TESSFACTOR:
7071	break;
7072	case SVGA3D_DECLUSAGE_COLOR: /** @todo color component order not identical!! */
7073	glDisableClientState(GL_COLOR_ARRAY);
7074	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7075	break;
7076	case SVGA3D_DECLUSAGE_FOG:
7077	glDisableClientState(GL_FOG_COORD_ARRAY);
7078	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7079	break;
7080	case SVGA3D_DECLUSAGE_DEPTH:
7081	break;
7082	case SVGA3D_DECLUSAGE_SAMPLE:
7083	break;
7084	case SVGA3D_DECLUSAGE_MAX: AssertFailed(); break; /* shut up gcc */
7085	}
7086	}
7087	}
7088	/* Unbind the vertex buffer after usage. */
7089	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7090	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7091	return VINF_SUCCESS;
7092	}
7093
7094	static DECLCALLBACK(int) vmsvga3dBackDrawPrimitives(PVGASTATECC pThisCC, uint32_t cid, uint32_t numVertexDecls, SVGA3dVertexDecl *pVertexDecl,
7095	uint32_t numRanges, SVGA3dPrimitiveRange *pRange, uint32_t cVertexDivisor,
7096	SVGA3dVertexDivisor *pVertexDivisor)
7097	{
7098	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7099	AssertReturn(pState, VERR_INTERNAL_ERROR);
7100	uint32_t iCurrentVertex;
7101
7102	Log(("vmsvga3dDrawPrimitives cid=%u numVertexDecls=%d numRanges=%d, cVertexDivisor=%d\n", cid, numVertexDecls, numRanges, cVertexDivisor));
7103
7104	/* Caller already check these, but it cannot hurt to check again... */
7105	AssertReturn(numVertexDecls && numVertexDecls <= SVGA3D_MAX_VERTEX_ARRAYS, VERR_INVALID_PARAMETER);
7106	AssertReturn(numRanges && numRanges <= SVGA3D_MAX_DRAW_PRIMITIVE_RANGES, VERR_INVALID_PARAMETER);
7107	AssertReturn(!cVertexDivisor \|\| cVertexDivisor == numVertexDecls, VERR_INVALID_PARAMETER);
7108
7109	if (!cVertexDivisor)
7110	pVertexDivisor = NULL; /* Be sure. */
7111
7112	PVMSVGA3DCONTEXT pContext;
7113	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7114	AssertRCReturn(rc, rc);
7115
7116	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7117
7118	/* Check for pretransformed vertex declarations. */
7119	for (unsigned iVertex = 0; iVertex < numVertexDecls; iVertex++)
7120	{
7121	switch (pVertexDecl[iVertex].identity.usage)
7122	{
7123	case SVGA3D_DECLUSAGE_POSITIONT:
7124	Log(("ShaderSetPositionTransformed: (%d,%d)\n", pContext->state.RectViewPort.w, pContext->state.RectViewPort.h));
7125	RT_FALL_THRU();
7126	case SVGA3D_DECLUSAGE_POSITION:
7127	ShaderSetPositionTransformed(pContext->pShaderContext, pContext->state.RectViewPort.w,
7128	pContext->state.RectViewPort.h,
7129	pVertexDecl[iVertex].identity.usage == SVGA3D_DECLUSAGE_POSITIONT);
7130	break;
7131	default: /* Shut up MSC. */ break;
7132	}
7133	}
7134
7135	/* Flush any shader changes; after (!) checking the vertex declarations to deal with pre-transformed vertices. */
7136	if (pContext->pShaderContext)
7137	{
7138	uint32_t rtHeight = 0;
7139
7140	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA_ID_INVALID)
7141	{
7142	PVMSVGA3DSURFACE pRenderTarget;
7143	rc = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pRenderTarget);
7144	AssertRCReturn(rc, rc);
7145
7146	rtHeight = pRenderTarget->paMipmapLevels[0].mipmapSize.height;
7147	}
7148
7149	ShaderUpdateState(pContext->pShaderContext, rtHeight);
7150	}
7151
7152	/* Try to figure out if instancing is used.
7153	* Support simple instancing case with one set of indexed data and one set per-instance data.
7154	*/
7155	uint32_t cInstances = 0;
7156	for (uint32_t iVertexDivisor = 0; iVertexDivisor < cVertexDivisor; ++iVertexDivisor)
7157	{
7158	if (pVertexDivisor[iVertexDivisor].indexedData)
7159	{
7160	if (cInstances == 0)
7161	cInstances = pVertexDivisor[iVertexDivisor].count;
7162	else
7163	Assert(cInstances == pVertexDivisor[iVertexDivisor].count);
7164	}
7165	else if (pVertexDivisor[iVertexDivisor].instanceData)
7166	{
7167	Assert(pVertexDivisor[iVertexDivisor].count == 1);
7168	}
7169	}
7170
7171	/* Process all vertex declarations. Each vertex buffer is represented by one stream. */
7172	iCurrentVertex = 0;
7173	while (iCurrentVertex < numVertexDecls)
7174	{
7175	uint32_t sidVertex = SVGA_ID_INVALID;
7176	uint32_t iVertex;
7177
7178	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7179	{
7180	if ( sidVertex != SVGA_ID_INVALID
7181	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7182	)
7183	break;
7184	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7185	}
7186
7187	rc = vmsvga3dDrawPrimitivesProcessVertexDecls(pThisCC, pContext, iCurrentVertex, iVertex - iCurrentVertex,
7188	&pVertexDecl[iCurrentVertex], pVertexDivisor);
7189	AssertRCReturn(rc, rc);
7190
7191	iCurrentVertex = iVertex;
7192	}
7193
7194	/* Now draw the primitives. */
7195	for (unsigned iPrimitive = 0; iPrimitive < numRanges; iPrimitive++)
7196	{
7197	GLenum modeDraw;
7198	unsigned const sidIndex = pRange[iPrimitive].indexArray.surfaceId;
7199	PVMSVGA3DSURFACE pIndexSurface = NULL;
7200	unsigned cVertices;
7201
7202	Log(("Primitive %d: type %s\n", iPrimitive, vmsvga3dPrimitiveType2String(pRange[iPrimitive].primType)));
7203	rc = vmsvga3dPrimitiveType2OGL(pRange[iPrimitive].primType, &modeDraw, pRange[iPrimitive].primitiveCount, &cVertices);
7204	if (RT_FAILURE(rc))
7205	{
7206	AssertRC(rc);
7207	goto internal_error;
7208	}
7209
7210	if (sidIndex != SVGA3D_INVALID_ID)
7211	{
7212	AssertMsg(pRange[iPrimitive].indexWidth == sizeof(uint32_t) \|\| pRange[iPrimitive].indexWidth == sizeof(uint16_t), ("Unsupported primitive width %d\n", pRange[iPrimitive].indexWidth));
7213
7214	rc = vmsvga3dSurfaceFromSid(pState, sidIndex, &pIndexSurface);
7215	if (RT_FAILURE(rc))
7216	{
7217	AssertRC(rc);
7218	goto internal_error;
7219	}
7220
7221	Log(("vmsvga3dDrawPrimitives: index surface sid=%u\n", sidIndex));
7222
7223	if (pIndexSurface->oglId.buffer == OPENGL_INVALID_ID)
7224	{
7225	Log(("vmsvga3dDrawPrimitives: create index buffer fDirty=%d size=%x bytes\n", pIndexSurface->fDirty, pIndexSurface->paMipmapLevels[0].cbSurface));
7226	pContext = &pState->SharedCtx;
7227	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7228
7229	pState->ext.glGenBuffers(1, &pIndexSurface->oglId.buffer);
7230	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7231	pIndexSurface->enmOGLResType = VMSVGA3D_OGLRESTYPE_BUFFER;
7232
7233	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7234	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7235
7236	Assert(pIndexSurface->fDirty);
7237
7238	/** @todo rethink usage dynamic/static */
7239	pState->ext.glBufferData(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->paMipmapLevels[0].cbSurface, pIndexSurface->paMipmapLevels[0].pSurfaceData, GL_DYNAMIC_DRAW);
7240	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7241
7242	pIndexSurface->paMipmapLevels[0].fDirty = false;
7243	pIndexSurface->fDirty = false;
7244
7245	pIndexSurface->f.s.surface1Flags \|= SVGA3D_SURFACE_HINT_INDEXBUFFER;
7246
7247	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, OPENGL_INVALID_ID);
7248	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7249
7250	pContext = pState->papContexts[cid];
7251	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7252	}
7253	Assert(pIndexSurface->fDirty == false);
7254
7255	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pIndexSurface->oglId.buffer);
7256	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7257	}
7258
7259	if (!pIndexSurface)
7260	{
7261	/* Render without an index buffer */
7262	Log(("DrawPrimitive %d cPrimitives=%d cVertices=%d index index bias=%d cInstances=%d\n", modeDraw, pRange[iPrimitive].primitiveCount, cVertices, pRange[iPrimitive].indexBias, cInstances));
7263	if (cInstances == 0)
7264	{
7265	glDrawArrays(modeDraw, pRange[iPrimitive].indexBias, cVertices);
7266	}
7267	else
7268	{
7269	pState->ext.glDrawArraysInstanced(modeDraw, pRange[iPrimitive].indexBias, cVertices, cInstances);
7270	}
7271	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7272	}
7273	else
7274	{
7275	Assert(pRange[iPrimitive].indexWidth == pRange[iPrimitive].indexArray.stride);
7276
7277	GLenum indexType;
7278	switch (pRange[iPrimitive].indexWidth)
7279	{
7280	case 1: indexType = GL_UNSIGNED_BYTE; break;
7281	case 2: indexType = GL_UNSIGNED_SHORT; break;
7282	default: AssertMsgFailed(("indexWidth %d\n", pRange[iPrimitive].indexWidth));
7283	RT_FALL_THROUGH();
7284	case 4: indexType = GL_UNSIGNED_INT; break;
7285	}
7286
7287	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));
7288	if (cInstances == 0)
7289	{
7290	/* Render with an index buffer */
7291	if (pRange[iPrimitive].indexBias == 0)
7292	glDrawElements(modeDraw,
7293	cVertices,
7294	indexType,
7295	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset); / byte offset in indices buffer */
7296	else
7297	pState->ext.glDrawElementsBaseVertex(modeDraw,
7298	cVertices,
7299	indexType,
7300	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7301	pRange[iPrimitive].indexBias); /* basevertex */
7302	}
7303	else
7304	{
7305	/* Render with an index buffer */
7306	if (pRange[iPrimitive].indexBias == 0)
7307	pState->ext.glDrawElementsInstanced(modeDraw,
7308	cVertices,
7309	indexType,
7310	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7311	cInstances);
7312	else
7313	pState->ext.glDrawElementsInstancedBaseVertex(modeDraw,
7314	cVertices,
7315	indexType,
7316	(GLvoid )(uintptr_t)pRange[iPrimitive].indexArray.offset, / byte offset in indices buffer */
7317	cInstances,
7318	pRange[iPrimitive].indexBias); /* basevertex */
7319	}
7320	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7321
7322	/* Unbind the index buffer after usage. */
7323	pState->ext.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
7324	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7325	}
7326	}
7327
7328	internal_error:
7329
7330	/* Deactivate the vertex declarations. */
7331	iCurrentVertex = 0;
7332	while (iCurrentVertex < numVertexDecls)
7333	{
7334	uint32_t sidVertex = SVGA_ID_INVALID;
7335	uint32_t iVertex;
7336
7337	for (iVertex = iCurrentVertex; iVertex < numVertexDecls; iVertex++)
7338	{
7339	if ( sidVertex != SVGA_ID_INVALID
7340	&& pVertexDecl[iVertex].array.surfaceId != sidVertex
7341	)
7342	break;
7343	sidVertex = pVertexDecl[iVertex].array.surfaceId;
7344	}
7345
7346	rc = vmsvga3dDrawPrimitivesCleanupVertexDecls(pThisCC, pContext, iCurrentVertex,
7347	iVertex - iCurrentVertex, &pVertexDecl[iCurrentVertex]);
7348	AssertRCReturn(rc, rc);
7349
7350	iCurrentVertex = iVertex;
7351	}
7352
7353	#ifdef DEBUG
7354	/* Check whether 'activeTexture' on texture unit 'i' matches what we expect. */
7355	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
7356	{
7357	if (pContext->aSidActiveTextures[i] != SVGA3D_INVALID_ID)
7358	{
7359	PVMSVGA3DSURFACE pTexture;
7360	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[i], &pTexture);
7361	AssertContinue(RT_SUCCESS(rc2));
7362
7363	GLint activeTextureUnit = 0;
7364	glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTextureUnit);
7365	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7366
7367	pState->ext.glActiveTexture(GL_TEXTURE0 + i);
7368	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7369
7370	GLint activeTexture = 0;
7371	glGetIntegerv(pTexture->bindingGL, &activeTexture);
7372	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7373
7374	pState->ext.glActiveTexture(activeTextureUnit);
7375	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7376
7377	AssertMsg(pTexture->oglId.texture == (GLuint)activeTexture,
7378	("%d vs %d unit %d (active unit %d) sid=%u\n", pTexture->oglId.texture, activeTexture, i,
7379	activeTextureUnit - GL_TEXTURE0, pContext->aSidActiveTextures[i]));
7380	}
7381	}
7382	#endif
7383
7384	#if 0
7385	/* Dump render target to a bitmap. */
7386	if (pContext->state.aRenderTargets[SVGA3D_RT_COLOR0] != SVGA3D_INVALID_ID)
7387	{
7388	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0]);
7389	PVMSVGA3DSURFACE pSurface;
7390	int rc2 = vmsvga3dSurfaceFromSid(pState, pContext->state.aRenderTargets[SVGA3D_RT_COLOR0], &pSurface);
7391	if (RT_SUCCESS(rc2))
7392	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post");
7393	# if 0
7394	/* Stage 0 texture. */
7395	if (pContext->aSidActiveTextures[0] != SVGA3D_INVALID_ID)
7396	{
7397	vmsvga3dUpdateHeapBuffersForSurfaces(pThisCC, pContext->aSidActiveTextures[0]);
7398	rc2 = vmsvga3dSurfaceFromSid(pState, pContext->aSidActiveTextures[0], &pSurface);
7399	if (RT_SUCCESS(rc2))
7400	vmsvga3dInfoSurfaceToBitmap(NULL, pSurface, "bmpgl", "rt", "-post-tx");
7401	}
7402	# endif
7403	}
7404	#endif
7405
7406	return rc;
7407	}
7408
7409
7410	static DECLCALLBACK(int) vmsvga3dBackShaderDefine(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type, uint32_t cbData, uint32_t *pShaderData)
7411	{
7412	PVMSVGA3DSHADER pShader;
7413	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7414	AssertReturn(pState, VERR_NO_MEMORY);
7415
7416	Log(("vmsvga3dShaderDefine cid=%u shid=%d type=%s cbData=0x%x\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cbData));
7417
7418	PVMSVGA3DCONTEXT pContext;
7419	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7420	AssertRCReturn(rc, rc);
7421
7422	AssertReturn(shid < SVGA3D_MAX_SHADER_IDS, VERR_INVALID_PARAMETER);
7423
7424	rc = vmsvga3dShaderParse(type, cbData, pShaderData);
7425	if (RT_FAILURE(rc))
7426	{
7427	AssertRC(rc);
7428	vmsvga3dShaderLogRel("Failed to parse", type, cbData, pShaderData);
7429	return rc;
7430	}
7431
7432	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7433
7434	if (type == SVGA3D_SHADERTYPE_VS)
7435	{
7436	if (shid >= pContext->cVertexShaders)
7437	{
7438	void pvNew = RTMemRealloc(pContext->paVertexShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7439	AssertReturn(pvNew, VERR_NO_MEMORY);
7440	pContext->paVertexShader = (PVMSVGA3DSHADER)pvNew;
7441	memset(&pContext->paVertexShader[pContext->cVertexShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cVertexShaders));
7442	for (uint32_t i = pContext->cVertexShaders; i < shid + 1; i++)
7443	pContext->paVertexShader[i].id = SVGA3D_INVALID_ID;
7444	pContext->cVertexShaders = shid + 1;
7445	}
7446	/* If one already exists with this id, then destroy it now. */
7447	if (pContext->paVertexShader[shid].id != SVGA3D_INVALID_ID)
7448	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paVertexShader[shid].type);
7449
7450	pShader = &pContext->paVertexShader[shid];
7451	}
7452	else
7453	{
7454	Assert(type == SVGA3D_SHADERTYPE_PS);
7455	if (shid >= pContext->cPixelShaders)
7456	{
7457	void pvNew = RTMemRealloc(pContext->paPixelShader, sizeof(VMSVGA3DSHADER) (shid + 1));
7458	AssertReturn(pvNew, VERR_NO_MEMORY);
7459	pContext->paPixelShader = (PVMSVGA3DSHADER)pvNew;
7460	memset(&pContext->paPixelShader[pContext->cPixelShaders], 0, sizeof(VMSVGA3DSHADER) * (shid + 1 - pContext->cPixelShaders));
7461	for (uint32_t i = pContext->cPixelShaders; i < shid + 1; i++)
7462	pContext->paPixelShader[i].id = SVGA3D_INVALID_ID;
7463	pContext->cPixelShaders = shid + 1;
7464	}
7465	/* If one already exists with this id, then destroy it now. */
7466	if (pContext->paPixelShader[shid].id != SVGA3D_INVALID_ID)
7467	vmsvga3dBackShaderDestroy(pThisCC, cid, shid, pContext->paPixelShader[shid].type);
7468
7469	pShader = &pContext->paPixelShader[shid];
7470	}
7471
7472	memset(pShader, 0, sizeof(*pShader));
7473	pShader->id = shid;
7474	pShader->cid = cid;
7475	pShader->type = type;
7476	pShader->cbData = cbData;
7477	pShader->pShaderProgram = RTMemAllocZ(cbData);
7478	AssertReturn(pShader->pShaderProgram, VERR_NO_MEMORY);
7479	memcpy(pShader->pShaderProgram, pShaderData, cbData);
7480
7481	#ifdef DUMP_SHADER_DISASSEMBLY
7482	LPD3DXBUFFER pDisassembly;
7483	HRESULT hr = D3DXDisassembleShader((const DWORD *)pShaderData, FALSE, NULL, &pDisassembly);
7484	if (hr == D3D_OK)
7485	{
7486	Log(("Shader disassembly:\n%s\n", pDisassembly->GetBufferPointer()));
7487	pDisassembly->Release();
7488	}
7489	#endif
7490
7491	switch (type)
7492	{
7493	case SVGA3D_SHADERTYPE_VS:
7494	rc = ShaderCreateVertexShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pVertexShader);
7495	AssertRC(rc);
7496	break;
7497
7498	case SVGA3D_SHADERTYPE_PS:
7499	rc = ShaderCreatePixelShader(pContext->pShaderContext, (const uint32_t *)pShaderData, cbData, &pShader->u.pPixelShader);
7500	AssertRC(rc);
7501	break;
7502
7503	default:
7504	AssertFailedReturn(VERR_INVALID_PARAMETER);
7505	}
7506	if (rc != VINF_SUCCESS)
7507	{
7508	vmsvga3dShaderLogRel("Failed to create", type, cbData, pShaderData);
7509
7510	RTMemFree(pShader->pShaderProgram);
7511	memset(pShader, 0, sizeof(*pShader));
7512	pShader->id = SVGA3D_INVALID_ID;
7513	}
7514
7515	return rc;
7516	}
7517
7518	static DECLCALLBACK(int) vmsvga3dBackShaderDestroy(PVGASTATECC pThisCC, uint32_t cid, uint32_t shid, SVGA3dShaderType type)
7519	{
7520	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7521	AssertReturn(pState, VERR_NO_MEMORY);
7522	PVMSVGA3DSHADER pShader = NULL;
7523
7524	Log(("vmsvga3dShaderDestroy cid=%u shid=%d type=%s\n", cid, shid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL"));
7525
7526	PVMSVGA3DCONTEXT pContext;
7527	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7528	AssertRCReturn(rc, rc);
7529
7530	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7531
7532	if (type == SVGA3D_SHADERTYPE_VS)
7533	{
7534	if ( shid < pContext->cVertexShaders
7535	&& pContext->paVertexShader[shid].id == shid)
7536	{
7537	pShader = &pContext->paVertexShader[shid];
7538	if (pContext->state.shidVertex == shid)
7539	{
7540	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7541	AssertRC(rc);
7542	}
7543
7544	rc = ShaderDestroyVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7545	AssertRC(rc);
7546	}
7547	}
7548	else
7549	{
7550	Assert(type == SVGA3D_SHADERTYPE_PS);
7551	if ( shid < pContext->cPixelShaders
7552	&& pContext->paPixelShader[shid].id == shid)
7553	{
7554	pShader = &pContext->paPixelShader[shid];
7555	if (pContext->state.shidPixel == shid)
7556	{
7557	ShaderSetPixelShader(pContext->pShaderContext, NULL);
7558	AssertRC(rc);
7559	}
7560
7561	rc = ShaderDestroyPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7562	AssertRC(rc);
7563	}
7564	}
7565
7566	if (pShader)
7567	{
7568	if (pShader->pShaderProgram)
7569	RTMemFree(pShader->pShaderProgram);
7570	memset(pShader, 0, sizeof(*pShader));
7571	pShader->id = SVGA3D_INVALID_ID;
7572	}
7573	else
7574	AssertFailedReturn(VERR_INVALID_PARAMETER);
7575
7576	return VINF_SUCCESS;
7577	}
7578
7579	static DECLCALLBACK(int) vmsvga3dBackShaderSet(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t cid, SVGA3dShaderType type, uint32_t shid)
7580	{
7581	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7582	AssertReturn(pState, VERR_NO_MEMORY);
7583	int rc;
7584
7585	Log(("vmsvga3dShaderSet cid=%u type=%s shid=%d\n", cid, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", shid));
7586
7587	if (!pContext)
7588	{
7589	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7590	AssertRCReturn(rc, rc);
7591	}
7592
7593	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7594
7595	if (type == SVGA3D_SHADERTYPE_VS)
7596	{
7597	/* Save for vm state save/restore. */
7598	pContext->state.shidVertex = shid;
7599	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_VERTEXSHADER;
7600
7601	if ( shid < pContext->cVertexShaders
7602	&& pContext->paVertexShader[shid].id == shid)
7603	{
7604	PVMSVGA3DSHADER pShader = &pContext->paVertexShader[shid];
7605	Assert(type == pShader->type);
7606
7607	rc = ShaderSetVertexShader(pContext->pShaderContext, pShader->u.pVertexShader);
7608	AssertRCReturn(rc, rc);
7609	}
7610	else
7611	if (shid == SVGA_ID_INVALID)
7612	{
7613	/* Unselect shader. */
7614	rc = ShaderSetVertexShader(pContext->pShaderContext, NULL);
7615	AssertRCReturn(rc, rc);
7616	}
7617	else
7618	AssertFailedReturn(VERR_INVALID_PARAMETER);
7619	}
7620	else
7621	{
7622	/* Save for vm state save/restore. */
7623	pContext->state.shidPixel = shid;
7624	pContext->state.u32UpdateFlags \|= VMSVGA3D_UPDATE_PIXELSHADER;
7625
7626	Assert(type == SVGA3D_SHADERTYPE_PS);
7627	if ( shid < pContext->cPixelShaders
7628	&& pContext->paPixelShader[shid].id == shid)
7629	{
7630	PVMSVGA3DSHADER pShader = &pContext->paPixelShader[shid];
7631	Assert(type == pShader->type);
7632
7633	rc = ShaderSetPixelShader(pContext->pShaderContext, pShader->u.pPixelShader);
7634	AssertRCReturn(rc, rc);
7635	}
7636	else
7637	if (shid == SVGA_ID_INVALID)
7638	{
7639	/* Unselect shader. */
7640	rc = ShaderSetPixelShader(pContext->pShaderContext, NULL);
7641	AssertRCReturn(rc, rc);
7642	}
7643	else
7644	AssertFailedReturn(VERR_INVALID_PARAMETER);
7645	}
7646
7647	return VINF_SUCCESS;
7648	}
7649
7650	static DECLCALLBACK(int) vmsvga3dBackShaderSetConst(PVGASTATECC pThisCC, uint32_t cid, uint32_t reg, SVGA3dShaderType type, SVGA3dShaderConstType ctype, uint32_t cRegisters, uint32_t *pValues)
7651	{
7652	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7653	AssertReturn(pState, VERR_NO_MEMORY);
7654
7655	Log(("vmsvga3dShaderSetConst cid=%u reg=%x type=%s cregs=%d ctype=%x\n", cid, reg, (type == SVGA3D_SHADERTYPE_VS) ? "VERTEX" : "PIXEL", cRegisters, ctype));
7656
7657	PVMSVGA3DCONTEXT pContext;
7658	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
7659	AssertRCReturn(rc, rc);
7660
7661	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7662
7663	for (uint32_t i = 0; i < cRegisters; i++)
7664	{
7665	#ifdef LOG_ENABLED
7666	switch (ctype)
7667	{
7668	case SVGA3D_CONST_TYPE_FLOAT:
7669	{
7670	float pValuesF = (float )pValues;
7671	Log(("ConstantF %d: value=" FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR ", " FLOAT_FMT_STR "\n",
7672	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])));
7673	break;
7674	}
7675
7676	case SVGA3D_CONST_TYPE_INT:
7677	Log(("ConstantI %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7678	break;
7679
7680	case SVGA3D_CONST_TYPE_BOOL:
7681	Log(("ConstantB %d: value=%d, %d, %d, %d\n", reg + i, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]));
7682	break;
7683
7684	default:
7685	AssertFailedReturn(VERR_INVALID_PARAMETER);
7686	}
7687	#endif
7688	vmsvga3dSaveShaderConst(pContext, reg + i, type, ctype, pValues[i4 + 0], pValues[i4 + 1], pValues[i4 + 2], pValues[i4 + 3]);
7689	}
7690
7691	switch (type)
7692	{
7693	case SVGA3D_SHADERTYPE_VS:
7694	switch (ctype)
7695	{
7696	case SVGA3D_CONST_TYPE_FLOAT:
7697	rc = ShaderSetVertexShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7698	break;
7699
7700	case SVGA3D_CONST_TYPE_INT:
7701	rc = ShaderSetVertexShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7702	break;
7703
7704	case SVGA3D_CONST_TYPE_BOOL:
7705	rc = ShaderSetVertexShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7706	break;
7707
7708	default:
7709	AssertFailedReturn(VERR_INVALID_PARAMETER);
7710	}
7711	AssertRCReturn(rc, rc);
7712	break;
7713
7714	case SVGA3D_SHADERTYPE_PS:
7715	switch (ctype)
7716	{
7717	case SVGA3D_CONST_TYPE_FLOAT:
7718	rc = ShaderSetPixelShaderConstantF(pContext->pShaderContext, reg, (const float *)pValues, cRegisters);
7719	break;
7720
7721	case SVGA3D_CONST_TYPE_INT:
7722	rc = ShaderSetPixelShaderConstantI(pContext->pShaderContext, reg, (const int32_t *)pValues, cRegisters);
7723	break;
7724
7725	case SVGA3D_CONST_TYPE_BOOL:
7726	rc = ShaderSetPixelShaderConstantB(pContext->pShaderContext, reg, (const uint8_t *)pValues, cRegisters);
7727	break;
7728
7729	default:
7730	AssertFailedReturn(VERR_INVALID_PARAMETER);
7731	}
7732	AssertRCReturn(rc, rc);
7733	break;
7734
7735	default:
7736	AssertFailedReturn(VERR_INVALID_PARAMETER);
7737	}
7738
7739	return VINF_SUCCESS;
7740	}
7741
7742	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryCreate(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7743	{
7744	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7745	AssertReturn(pState->ext.glGenQueries, VERR_NOT_SUPPORTED);
7746	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7747
7748	GLuint idQuery = 0;
7749	pState->ext.glGenQueries(1, &idQuery);
7750	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7751	AssertReturn(idQuery, VERR_INTERNAL_ERROR);
7752	pContext->occlusion.idQuery = idQuery;
7753	return VINF_SUCCESS;
7754	}
7755
7756	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryDelete(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7757	{
7758	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7759	AssertReturn(pState->ext.glDeleteQueries, VERR_NOT_SUPPORTED);
7760	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7761
7762	if (pContext->occlusion.idQuery)
7763	{
7764	pState->ext.glDeleteQueries(1, &pContext->occlusion.idQuery);
7765	}
7766	return VINF_SUCCESS;
7767	}
7768
7769	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryBegin(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7770	{
7771	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7772	AssertReturn(pState->ext.glBeginQuery, VERR_NOT_SUPPORTED);
7773	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7774
7775	pState->ext.glBeginQuery(GL_ANY_SAMPLES_PASSED, pContext->occlusion.idQuery);
7776	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7777	return VINF_SUCCESS;
7778	}
7779
7780	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryEnd(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext)
7781	{
7782	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7783	AssertReturn(pState->ext.glEndQuery, VERR_NOT_SUPPORTED);
7784	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7785
7786	pState->ext.glEndQuery(GL_ANY_SAMPLES_PASSED);
7787	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7788	return VINF_SUCCESS;
7789	}
7790
7791	static DECLCALLBACK(int) vmsvga3dBackOcclusionQueryGetData(PVGASTATECC pThisCC, PVMSVGA3DCONTEXT pContext, uint32_t *pu32Pixels)
7792	{
7793	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7794	AssertReturn(pState->ext.glGetQueryObjectuiv, VERR_NOT_SUPPORTED);
7795	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7796
7797	GLuint pixels = 0;
7798	pState->ext.glGetQueryObjectuiv(pContext->occlusion.idQuery, GL_QUERY_RESULT, &pixels);
7799	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7800
7801	*pu32Pixels = (uint32_t)pixels;
7802	return VINF_SUCCESS;
7803	}
7804
7805	/**
7806	* Worker for vmsvga3dUpdateHeapBuffersForSurfaces.
7807	*
7808	* This will allocate heap buffers if necessary, thus increasing the memory
7809	* usage of the process.
7810	*
7811	* @todo Would be interesting to share this code with the saved state code.
7812	*
7813	* @returns VBox status code.
7814	* @param pThisCC The VGA/VMSVGA context.
7815	* @param pSurface The surface to refresh the heap buffers for.
7816	*/
7817	static DECLCALLBACK(int) vmsvga3dBackSurfaceUpdateHeapBuffers(PVGASTATECC pThisCC, PVMSVGA3DSURFACE pSurface)
7818	{
7819	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
7820	AssertReturn(pState, VERR_INVALID_STATE);
7821
7822	/*
7823	* Currently we've got trouble retreving bit for DEPTHSTENCIL
7824	* surfaces both for OpenGL and D3D, so skip these here (don't
7825	* wast memory on them).
7826	*/
7827	uint32_t const fSwitchFlags = pSurface->f.s.surface1Flags & VMSVGA3D_SURFACE_HINT_SWITCH_MASK;
7828	if ( fSwitchFlags != SVGA3D_SURFACE_HINT_DEPTHSTENCIL
7829	&& fSwitchFlags != (SVGA3D_SURFACE_HINT_DEPTHSTENCIL \| SVGA3D_SURFACE_HINT_TEXTURE))
7830	{
7831	/*
7832	* Change OpenGL context to the one the surface is associated with.
7833	*/
7834	PVMSVGA3DCONTEXT pContext = &pState->SharedCtx;
7835	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
7836
7837	/*
7838	* Work thru each mipmap level for each face.
7839	*/
7840	for (uint32_t iFace = 0; iFace < pSurface->cFaces; iFace++)
7841	{
7842	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[iFace * pSurface->cLevels];
7843	for (uint32_t i = 0; i < pSurface->cLevels; i++, pMipmapLevel++)
7844	{
7845	if (VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
7846	{
7847	Assert(pMipmapLevel->cbSurface);
7848	Assert(pMipmapLevel->cbSurface == pMipmapLevel->cbSurfacePlane * pMipmapLevel->mipmapSize.depth);
7849
7850	/*
7851	* Make sure we've got surface memory buffer.
7852	*/
7853	uint8_t pbDst = (uint8_t )pMipmapLevel->pSurfaceData;
7854	if (!pbDst)
7855	{
7856	pMipmapLevel->pSurfaceData = pbDst = (uint8_t *)RTMemAllocZ(pMipmapLevel->cbSurface);
7857	AssertReturn(pbDst, VERR_NO_MEMORY);
7858	}
7859
7860	/*
7861	* OpenGL specifics.
7862	*/
7863	switch (pSurface->enmOGLResType)
7864	{
7865	case VMSVGA3D_OGLRESTYPE_TEXTURE:
7866	{
7867	GLint activeTexture;
7868	glGetIntegerv(GL_TEXTURE_BINDING_2D, &activeTexture);
7869	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7870
7871	glBindTexture(GL_TEXTURE_2D, pSurface->oglId.texture);
7872	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7873
7874	/* Set row length and alignment of the output data. */
7875	VMSVGAPACKPARAMS SavedParams;
7876	vmsvga3dOglSetPackParams(pState, pContext, pSurface, &SavedParams);
7877
7878	glGetTexImage(GL_TEXTURE_2D,
7879	i,
7880	pSurface->formatGL,
7881	pSurface->typeGL,
7882	pbDst);
7883	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7884
7885	vmsvga3dOglRestorePackParams(pState, pContext, pSurface, &SavedParams);
7886
7887	/* Restore the old active texture. */
7888	glBindTexture(GL_TEXTURE_2D, activeTexture);
7889	VMSVGA3D_CHECK_LAST_ERROR_WARN(pState, pContext);
7890	break;
7891	}
7892
7893	case VMSVGA3D_OGLRESTYPE_BUFFER:
7894	{
7895	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, pSurface->oglId.buffer);
7896	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7897
7898	void *pvSrc = pState->ext.glMapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
7899	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7900	if (RT_VALID_PTR(pvSrc))
7901	memcpy(pbDst, pvSrc, pMipmapLevel->cbSurface);
7902	else
7903	AssertPtr(pvSrc);
7904
7905	pState->ext.glUnmapBuffer(GL_ARRAY_BUFFER);
7906	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7907
7908	pState->ext.glBindBuffer(GL_ARRAY_BUFFER, 0);
7909	VMSVGA3D_CHECK_LAST_ERROR(pState, pContext);
7910	break;
7911	}
7912
7913	default:
7914	AssertMsgFailed(("%#x\n", fSwitchFlags));
7915	}
7916	}
7917	/* else: There is no data in hardware yet, so whatever we got is already current. */
7918	}
7919	}
7920	}
7921
7922	return VINF_SUCCESS;
7923	}
7924
7925	static DECLCALLBACK(int) vmsvga3dBackQueryInterface(PVGASTATECC pThisCC, char const pszInterfaceName, void pvInterfaceFuncs, size_t cbInterfaceFuncs)
7926	{
7927	RT_NOREF(pThisCC);
7928
7929	int rc = VINF_SUCCESS;
7930	if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_3D) == 0)
7931	{
7932	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCS3D))
7933	{
7934	if (pvInterfaceFuncs)
7935	{
7936	VMSVGA3DBACKENDFUNCS3D p = (VMSVGA3DBACKENDFUNCS3D )pvInterfaceFuncs;
7937	p->pfnInit = vmsvga3dBackInit;
7938	p->pfnPowerOn = vmsvga3dBackPowerOn;
7939	p->pfnTerminate = vmsvga3dBackTerminate;
7940	p->pfnReset = vmsvga3dBackReset;
7941	p->pfnQueryCaps = vmsvga3dBackQueryCaps;
7942	p->pfnChangeMode = vmsvga3dBackChangeMode;
7943	p->pfnCreateTexture = vmsvga3dBackCreateTexture;
7944	p->pfnSurfaceDestroy = vmsvga3dBackSurfaceDestroy;
7945	p->pfnSurfaceInvalidateImage = vmsvga3dBackSurfaceInvalidateImage;
7946	p->pfnSurfaceCopy = vmsvga3dBackSurfaceCopy;
7947	p->pfnSurfaceDMACopyBox = vmsvga3dBackSurfaceDMACopyBox;
7948	p->pfnSurfaceStretchBlt = vmsvga3dBackSurfaceStretchBlt;
7949	p->pfnUpdateHostScreenViewport = vmsvga3dBackUpdateHostScreenViewport;
7950	p->pfnDefineScreen = vmsvga3dBackDefineScreen;
7951	p->pfnDestroyScreen = vmsvga3dBackDestroyScreen;
7952	p->pfnSurfaceBlitToScreen = vmsvga3dBackSurfaceBlitToScreen;
7953	p->pfnSurfaceUpdateHeapBuffers = vmsvga3dBackSurfaceUpdateHeapBuffers;
7954	}
7955	}
7956	else
7957	{
7958	AssertFailed();
7959	rc = VERR_INVALID_PARAMETER;
7960	}
7961	}
7962	else if (RTStrCmp(pszInterfaceName, VMSVGA3D_BACKEND_INTERFACE_NAME_VGPU9) == 0)
7963	{
7964	if (cbInterfaceFuncs == sizeof(VMSVGA3DBACKENDFUNCSVGPU9))
7965	{
7966	if (pvInterfaceFuncs)
7967	{
7968	VMSVGA3DBACKENDFUNCSVGPU9 p = (VMSVGA3DBACKENDFUNCSVGPU9 )pvInterfaceFuncs;
7969	p->pfnContextDefine = vmsvga3dBackContextDefine;
7970	p->pfnContextDestroy = vmsvga3dBackContextDestroy;
7971	p->pfnSetTransform = vmsvga3dBackSetTransform;
7972	p->pfnSetZRange = vmsvga3dBackSetZRange;
7973	p->pfnSetRenderState = vmsvga3dBackSetRenderState;
7974	p->pfnSetRenderTarget = vmsvga3dBackSetRenderTarget;
7975	p->pfnSetTextureState = vmsvga3dBackSetTextureState;
7976	p->pfnSetMaterial = vmsvga3dBackSetMaterial;
7977	p->pfnSetLightData = vmsvga3dBackSetLightData;
7978	p->pfnSetLightEnabled = vmsvga3dBackSetLightEnabled;
7979	p->pfnSetViewPort = vmsvga3dBackSetViewPort;
7980	p->pfnSetClipPlane = vmsvga3dBackSetClipPlane;
7981	p->pfnCommandClear = vmsvga3dBackCommandClear;
7982	p->pfnDrawPrimitives = vmsvga3dBackDrawPrimitives;
7983	p->pfnSetScissorRect = vmsvga3dBackSetScissorRect;
7984	p->pfnGenerateMipmaps = vmsvga3dBackGenerateMipmaps;
7985	p->pfnShaderDefine = vmsvga3dBackShaderDefine;
7986	p->pfnShaderDestroy = vmsvga3dBackShaderDestroy;
7987	p->pfnShaderSet = vmsvga3dBackShaderSet;
7988	p->pfnShaderSetConst = vmsvga3dBackShaderSetConst;
7989	p->pfnOcclusionQueryCreate = vmsvga3dBackOcclusionQueryCreate;
7990	p->pfnOcclusionQueryDelete = vmsvga3dBackOcclusionQueryDelete;
7991	p->pfnOcclusionQueryBegin = vmsvga3dBackOcclusionQueryBegin;
7992	p->pfnOcclusionQueryEnd = vmsvga3dBackOcclusionQueryEnd;
7993	p->pfnOcclusionQueryGetData = vmsvga3dBackOcclusionQueryGetData;
7994	}
7995	}
7996	else
7997	{
7998	AssertFailed();
7999	rc = VERR_INVALID_PARAMETER;
8000	}
8001	}
8002	else
8003	rc = VERR_NOT_IMPLEMENTED;
8004	return rc;
8005	}
8006
8007
8008	extern VMSVGA3DBACKENDDESC const g_BackendLegacy =
8009	{
8010	"LEGACY",
8011	vmsvga3dBackQueryInterface
8012	};

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-ogl.cpp@ 95288

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