DevVGA-SVGA3d.cpp@ 87979

Last change on this file since 87979 was 87110, checked in by vboxsync, 4 years ago
3D/VMSVGA: Ignore a surface in case of inconsistent parameters, bugref:9880
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 38.8 KB

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1	/* $Id: DevVGA-SVGA3d.cpp 87110 2020-12-21 13:29:10Z vboxsync $ */
2	/** @file
3	* DevSVGA3d - VMWare SVGA device, 3D parts - Common core code.
4	*/
5
6	/*
7	* Copyright (C) 2013-2020 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	#define LOG_GROUP LOG_GROUP_DEV_VMSVGA
23	#include <VBox/vmm/pdmdev.h>
24	#include <iprt/errcore.h>
25	#include <VBox/log.h>
26
27	#include <iprt/assert.h>
28	#include <iprt/mem.h>
29
30	#include <VBox/vmm/pgm.h> /* required by DevVGA.h */
31	#include <VBoxVideo.h> /* required by DevVGA.h */
32
33	/* should go BEFORE any other DevVGA include to make all DevVGA.h config defines be visible */
34	#include "DevVGA.h"
35
36	#include "DevVGA-SVGA.h"
37	#include "DevVGA-SVGA3d.h"
38	#define VMSVGA3D_INCL_STRUCTURE_DESCRIPTORS
39	#include "DevVGA-SVGA3d-internal.h"
40
41
42
43	/**
44	* Implements the SVGA_3D_CMD_SURFACE_DEFINE_V2 and SVGA_3D_CMD_SURFACE_DEFINE
45	* commands (fifo).
46	*
47	* @returns VBox status code (currently ignored).
48	* @param pThisCC The VGA/VMSVGA state for ring-3.
49	* @param sid The ID of the surface to (re-)define.
50	* @param surfaceFlags .
51	* @param format .
52	* @param multisampleCount .
53	* @param autogenFilter .
54	* @param numMipLevels .
55	* @param pMipLevel0Size .
56	*/
57	int vmsvga3dSurfaceDefine(PVGASTATECC pThisCC, uint32_t sid, SVGA3dSurface1Flags surfaceFlags, SVGA3dSurfaceFormat format,
58	uint32_t multisampleCount, SVGA3dTextureFilter autogenFilter,
59	uint32_t numMipLevels, SVGA3dSize const *pMipLevel0Size)
60	{
61	PVMSVGA3DSURFACE pSurface;
62	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
63	AssertReturn(pState, VERR_INVALID_STATE);
64
65	LogFunc(("sid=%u surfaceFlags=%#x format=%s (%#x) multiSampleCount=%d autogenFilter=%d, numMipLevels=%d size=(%dx%dx%d)\n",
66	sid, surfaceFlags, vmsvgaLookupEnum((int)format, &g_SVGA3dSurfaceFormat2String), format, multisampleCount, autogenFilter,
67	numMipLevels, pMipLevel0Size->width, pMipLevel0Size->height, pMipLevel0Size->depth));
68
69	AssertReturn(sid < SVGA3D_MAX_SURFACE_IDS, VERR_INVALID_PARAMETER);
70	AssertReturn(numMipLevels >= 1, VERR_INVALID_PARAMETER);
71
72	if (sid >= pState->cSurfaces)
73	{
74	/* Grow the array. */
75	uint32_t cNew = RT_ALIGN(sid + 15, 16);
76	void pvNew = RTMemRealloc(pState->papSurfaces, sizeof(pState->papSurfaces[0]) cNew);
77	AssertReturn(pvNew, VERR_NO_MEMORY);
78	pState->papSurfaces = (PVMSVGA3DSURFACE *)pvNew;
79	while (pState->cSurfaces < cNew)
80	{
81	pSurface = (PVMSVGA3DSURFACE)RTMemAllocZ(sizeof(*pSurface));
82	AssertReturn(pSurface, VERR_NO_MEMORY);
83	pSurface->id = SVGA3D_INVALID_ID;
84	pState->papSurfaces[pState->cSurfaces++] = pSurface;
85	}
86	}
87	pSurface = pState->papSurfaces[sid];
88
89	/* If one already exists with this id, then destroy it now. */
90	if (pSurface->id != SVGA3D_INVALID_ID)
91	vmsvga3dSurfaceDestroy(pThisCC, sid);
92
93	RT_ZERO(*pSurface);
94	pSurface->id = SVGA3D_INVALID_ID; /* Keep this value until the surface init completes */
95	#ifdef VMSVGA3D_OPENGL
96	pSurface->idWeakContextAssociation = SVGA3D_INVALID_ID;
97	pSurface->oglId.buffer = OPENGL_INVALID_ID;
98	#elif defined(VMSVGA3D_DX)
99	// pSurface->pBackendSurface = NULL;
100	#else /* VMSVGA3D_DIRECT3D */
101	pSurface->idAssociatedContext = SVGA3D_INVALID_ID;
102	pSurface->hSharedObject = NULL;
103	pSurface->pSharedObjectTree = NULL;
104	#endif
105
106	/** @todo This 'switch' and the sufraceFlags tweaks should not be necessary.
107	* The actual surface type will be figured out when the surface is actually used later.
108	* The backends code must be reviewed for unnecessary dependencies on the surfaceFlags value.
109	*/
110	/* The surface type is sort of undefined now, even though the hints and format can help to clear that up.
111	* In some case we'll have to wait until the surface is used to create the D3D object.
112	*/
113	switch (format)
114	{
115	case SVGA3D_Z_D32:
116	case SVGA3D_Z_D16:
117	case SVGA3D_Z_D24S8:
118	case SVGA3D_Z_D15S1:
119	case SVGA3D_Z_D24X8:
120	case SVGA3D_Z_DF16:
121	case SVGA3D_Z_DF24:
122	case SVGA3D_Z_D24S8_INT:
123	Assert(surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL);
124	surfaceFlags \|= SVGA3D_SURFACE_HINT_DEPTHSTENCIL;
125	break;
126
127	/* Texture compression formats */
128	case SVGA3D_DXT1:
129	case SVGA3D_DXT2:
130	case SVGA3D_DXT3:
131	case SVGA3D_DXT4:
132	case SVGA3D_DXT5:
133	/* Bump-map formats */
134	case SVGA3D_BUMPU8V8:
135	case SVGA3D_BUMPL6V5U5:
136	case SVGA3D_BUMPX8L8V8U8:
137	case SVGA3D_V8U8:
138	case SVGA3D_Q8W8V8U8:
139	case SVGA3D_CxV8U8:
140	case SVGA3D_X8L8V8U8:
141	case SVGA3D_A2W10V10U10:
142	case SVGA3D_V16U16:
143	/* Typical render target formats; we should allow render target buffers to be used as textures. */
144	case SVGA3D_X8R8G8B8:
145	case SVGA3D_A8R8G8B8:
146	case SVGA3D_R5G6B5:
147	case SVGA3D_X1R5G5B5:
148	case SVGA3D_A1R5G5B5:
149	case SVGA3D_A4R4G4B4:
150	Assert(surfaceFlags & (SVGA3D_SURFACE_HINT_TEXTURE \| SVGA3D_SURFACE_SCREENTARGET));
151	surfaceFlags \|= SVGA3D_SURFACE_HINT_TEXTURE;
152	break;
153
154	case SVGA3D_LUMINANCE8:
155	case SVGA3D_LUMINANCE4_ALPHA4:
156	case SVGA3D_LUMINANCE16:
157	case SVGA3D_LUMINANCE8_ALPHA8:
158	case SVGA3D_ARGB_S10E5: /* 16-bit floating-point ARGB */
159	case SVGA3D_ARGB_S23E8: /* 32-bit floating-point ARGB */
160	case SVGA3D_A2R10G10B10:
161	case SVGA3D_ALPHA8:
162	case SVGA3D_R_S10E5:
163	case SVGA3D_R_S23E8:
164	case SVGA3D_RG_S10E5:
165	case SVGA3D_RG_S23E8:
166	case SVGA3D_G16R16:
167	case SVGA3D_A16B16G16R16:
168	case SVGA3D_UYVY:
169	case SVGA3D_YUY2:
170	case SVGA3D_NV12:
171	case SVGA3D_FORMAT_DEAD2: /* Old SVGA3D_AYUV */
172	case SVGA3D_ATI1:
173	case SVGA3D_ATI2:
174	break;
175
176	/*
177	* Any surface can be used as a buffer object, but SVGA3D_BUFFER is
178	* the most efficient format to use when creating new surfaces
179	* expressly for index or vertex data.
180	*/
181	case SVGA3D_BUFFER:
182	break;
183
184	default:
185	break;
186	}
187
188	pSurface->surfaceFlags = surfaceFlags;
189	pSurface->format = format;
190	/* cFaces is 6 for a cubemaps and 1 otherwise. */
191	pSurface->cFaces = (uint32_t)((surfaceFlags & SVGA3D_SURFACE_CUBEMAP) ? 6 : 1);
192	pSurface->cLevels = numMipLevels;
193	pSurface->multiSampleCount = multisampleCount;
194	pSurface->autogenFilter = autogenFilter;
195	Assert(autogenFilter != SVGA3D_TEX_FILTER_FLATCUBIC);
196	Assert(autogenFilter != SVGA3D_TEX_FILTER_GAUSSIANCUBIC);
197	pSurface->paMipmapLevels = (PVMSVGA3DMIPMAPLEVEL)RTMemAllocZ(numMipLevels * pSurface->cFaces * sizeof(VMSVGA3DMIPMAPLEVEL));
198	AssertReturn(pSurface->paMipmapLevels, VERR_NO_MEMORY);
199
200	pSurface->cbBlock = vmsvga3dSurfaceFormatSize(format, &pSurface->cxBlock, &pSurface->cyBlock);
201	AssertReturn(pSurface->cbBlock, VERR_INVALID_PARAMETER);
202
203	/** @todo cbMemRemaining = value of SVGA_REG_MOB_MAX_SIZE */
204	uint32_t cbMemRemaining = SVGA3D_MAX_SURFACE_MEM_SIZE; /* Do not allow more than this for a surface. */
205	SVGA3dSize mipmapSize = *pMipLevel0Size;
206	int rc = VINF_SUCCESS;
207
208	for (uint32_t i = 0; i < numMipLevels; ++i)
209	{
210	for (uint32_t iFace = 0; iFace < pSurface->cFaces; ++iFace)
211	{
212	uint32_t const iMipmap = iFace * numMipLevels + i;
213	LogFunc(("[%d] face %d mip level %d (%d,%d,%d) cbBlock=%#x block %dx%d\n",
214	iMipmap, iFace, i, mipmapSize.width, mipmapSize.height, mipmapSize.depth,
215	pSurface->cbBlock, pSurface->cxBlock, pSurface->cyBlock));
216
217	uint32_t cBlocksX;
218	uint32_t cBlocksY;
219	if (RT_LIKELY(pSurface->cxBlock == 1 && pSurface->cyBlock == 1))
220	{
221	cBlocksX = mipmapSize.width;
222	cBlocksY = mipmapSize.height;
223	}
224	else
225	{
226	cBlocksX = mipmapSize.width / pSurface->cxBlock;
227	if (mipmapSize.width % pSurface->cxBlock)
228	++cBlocksX;
229	cBlocksY = mipmapSize.height / pSurface->cyBlock;
230	if (mipmapSize.height % pSurface->cyBlock)
231	++cBlocksY;
232	}
233
234	AssertBreakStmt(cBlocksX > 0 && cBlocksY > 0 && mipmapSize.depth > 0, rc = VERR_INVALID_PARAMETER);
235
236	const uint32_t cMaxBlocksX = cbMemRemaining / pSurface->cbBlock;
237	AssertBreakStmt(cBlocksX < cMaxBlocksX, rc = VERR_INVALID_PARAMETER);
238
239	const uint32_t cbSurfacePitch = pSurface->cbBlock * cBlocksX;
240	LogFunc(("cbSurfacePitch=0x%x\n", cbSurfacePitch));
241
242	const uint32_t cMaxBlocksY = cbMemRemaining / cbSurfacePitch;
243	AssertBreakStmt(cBlocksY < cMaxBlocksY, rc = VERR_INVALID_PARAMETER);
244
245	const uint32_t cbSurfacePlane = cbSurfacePitch * cBlocksY;
246
247	const uint32_t cMaxDepth = cbMemRemaining / cbSurfacePlane;
248	AssertBreakStmt(mipmapSize.depth < cMaxDepth, rc = VERR_INVALID_PARAMETER);
249
250	const uint32_t cbSurface = cbSurfacePlane * mipmapSize.depth;
251
252	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[iMipmap];
253	pMipmapLevel->mipmapSize = mipmapSize;
254	pMipmapLevel->cBlocksX = cBlocksX;
255	pMipmapLevel->cBlocksY = cBlocksY;
256	pMipmapLevel->cBlocks = cBlocksX * cBlocksY * mipmapSize.depth;
257	pMipmapLevel->cbSurfacePitch = cbSurfacePitch;
258	pMipmapLevel->cbSurfacePlane = cbSurfacePlane;
259	pMipmapLevel->cbSurface = cbSurface;
260	pMipmapLevel->pSurfaceData = NULL;
261
262	cbMemRemaining -= cbSurface;
263	}
264
265	AssertRCBreak(rc);
266
267	mipmapSize.width >>= 1;
268	if (mipmapSize.width == 0) mipmapSize.width = 1;
269	mipmapSize.height >>= 1;
270	if (mipmapSize.height == 0) mipmapSize.height = 1;
271	mipmapSize.depth >>= 1;
272	if (mipmapSize.depth == 0) mipmapSize.depth = 1;
273	}
274
275	AssertLogRelRCReturnStmt(rc, RTMemFree(pSurface->paMipmapLevels), rc);
276
277	#ifdef VMSVGA3D_DIRECT3D
278	/* Translate the format and usage flags to D3D. */
279	pSurface->d3dfmtRequested = vmsvga3dSurfaceFormat2D3D(format);
280	pSurface->formatD3D = D3D9GetActualFormat(pState, pSurface->d3dfmtRequested);
281	pSurface->multiSampleTypeD3D= vmsvga3dMultipeSampleCount2D3D(multisampleCount);
282	pSurface->fUsageD3D = 0;
283	if (surfaceFlags & SVGA3D_SURFACE_HINT_DYNAMIC)
284	pSurface->fUsageD3D \|= D3DUSAGE_DYNAMIC;
285	if (surfaceFlags & SVGA3D_SURFACE_HINT_RENDERTARGET)
286	pSurface->fUsageD3D \|= D3DUSAGE_RENDERTARGET;
287	if (surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL)
288	pSurface->fUsageD3D \|= D3DUSAGE_DEPTHSTENCIL;
289	if (surfaceFlags & SVGA3D_SURFACE_HINT_WRITEONLY)
290	pSurface->fUsageD3D \|= D3DUSAGE_WRITEONLY;
291	if (surfaceFlags & SVGA3D_SURFACE_AUTOGENMIPMAPS)
292	pSurface->fUsageD3D \|= D3DUSAGE_AUTOGENMIPMAP;
293	pSurface->enmD3DResType = VMSVGA3D_D3DRESTYPE_NONE;
294	/* pSurface->u.pSurface = NULL; */
295	/* pSurface->bounce.pTexture = NULL; */
296	/* pSurface->emulated.pTexture = NULL; */
297	#elif defined(VMSVGA3D_DX)
298	/* Nothing, because all backend specific data reside in pSurface->pBackendSurface. */
299	#else
300	/* pSurface->fEmulated = false; */
301	/* pSurface->idEmulated = OPENGL_INVALID_ID; */
302	vmsvga3dSurfaceFormat2OGL(pSurface, format);
303	#endif
304
305	LogFunc(("surface hint(s):%s%s%s%s%s%s\n",
306	(surfaceFlags & SVGA3D_SURFACE_HINT_INDEXBUFFER) ? " SVGA3D_SURFACE_HINT_INDEXBUFFER" : "",
307	(surfaceFlags & SVGA3D_SURFACE_HINT_VERTEXBUFFER) ? " SVGA3D_SURFACE_HINT_VERTEXBUFFER" : "",
308	(surfaceFlags & SVGA3D_SURFACE_HINT_TEXTURE) ? " SVGA3D_SURFACE_HINT_TEXTURE" : "",
309	(surfaceFlags & SVGA3D_SURFACE_HINT_DEPTHSTENCIL) ? " SVGA3D_SURFACE_HINT_DEPTHSTENCIL" : "",
310	(surfaceFlags & SVGA3D_SURFACE_HINT_RENDERTARGET) ? " SVGA3D_SURFACE_HINT_RENDERTARGET" : "",
311	(surfaceFlags & SVGA3D_SURFACE_CUBEMAP) ? " SVGA3D_SURFACE_CUBEMAP" : ""
312	));
313
314	Assert(!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface));
315
316	/* Allocate buffer to hold the surface data until we can move it into a D3D object */
317	for (uint32_t i = 0; i < numMipLevels * pSurface->cFaces; ++i)
318	{
319	PVMSVGA3DMIPMAPLEVEL pMipmapLevel = &pSurface->paMipmapLevels[i];
320	pMipmapLevel->pSurfaceData = RTMemAllocZ(pMipmapLevel->cbSurface);
321	AssertReturn(pMipmapLevel->pSurfaceData, VERR_NO_MEMORY);
322	}
323
324	pSurface->id = sid;
325	return VINF_SUCCESS;
326	}
327
328
329	/**
330	* Implements the SVGA_3D_CMD_SURFACE_DESTROY command (fifo).
331	*
332	* @returns VBox status code (currently ignored).
333	* @param pThisCC The VGA/VMSVGA state for ring-3.
334	* @param sid The ID of the surface to destroy.
335	*/
336	int vmsvga3dSurfaceDestroy(PVGASTATECC pThisCC, uint32_t sid)
337	{
338	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
339	AssertReturn(pState, VERR_NO_MEMORY);
340
341	PVMSVGA3DSURFACE pSurface;
342	int rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
343	AssertRCReturn(rc, rc);
344
345	LogFunc(("sid=%u\n", sid));
346
347	/* Check all contexts if this surface is used as a render target or active texture. */
348	for (uint32_t cid = 0; cid < pState->cContexts; cid++)
349	{
350	PVMSVGA3DCONTEXT pContext = pState->papContexts[cid];
351	if (pContext->id == cid)
352	{
353	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->aSidActiveTextures); ++i)
354	if (pContext->aSidActiveTextures[i] == sid)
355	pContext->aSidActiveTextures[i] = SVGA3D_INVALID_ID;
356	for (uint32_t i = 0; i < RT_ELEMENTS(pContext->state.aRenderTargets); ++i)
357	if (pContext->state.aRenderTargets[i] == sid)
358	pContext->state.aRenderTargets[i] = SVGA3D_INVALID_ID;
359	}
360	}
361
362	vmsvga3dBackSurfaceDestroy(pState, pSurface);
363
364	if (pSurface->paMipmapLevels)
365	{
366	for (uint32_t i = 0; i < pSurface->cLevels * pSurface->cFaces; ++i)
367	RTMemFreeZ(pSurface->paMipmapLevels[i].pSurfaceData, pSurface->paMipmapLevels[i].cbSurface);
368	RTMemFree(pSurface->paMipmapLevels);
369	}
370
371	memset(pSurface, 0, sizeof(*pSurface));
372	pSurface->id = SVGA3D_INVALID_ID;
373
374	return VINF_SUCCESS;
375	}
376
377
378	/**
379	* Implements the SVGA_3D_CMD_SURFACE_STRETCHBLT command (fifo).
380	*
381	* @returns VBox status code (currently ignored).
382	* @param pThis The shared VGA/VMSVGA state.
383	* @param pThisCC The VGA/VMSVGA state for ring-3.
384	* @param pDstSfcImg
385	* @param pDstBox
386	* @param pSrcSfcImg
387	* @param pSrcBox
388	* @param enmMode
389	*/
390	int vmsvga3dSurfaceStretchBlt(PVGASTATE pThis, PVGASTATECC pThisCC, SVGA3dSurfaceImageId const pDstSfcImg, SVGA3dBox const pDstBox,
391	SVGA3dSurfaceImageId const pSrcSfcImg, SVGA3dBox const pSrcBox, SVGA3dStretchBltMode enmMode)
392	{
393	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
394	AssertReturn(pState, VERR_NO_MEMORY);
395
396	int rc;
397
398	uint32_t const sidSrc = pSrcSfcImg->sid;
399	PVMSVGA3DSURFACE pSrcSurface;
400	rc = vmsvga3dSurfaceFromSid(pState, sidSrc, &pSrcSurface);
401	AssertRCReturn(rc, rc);
402
403	uint32_t const sidDst = pDstSfcImg->sid;
404	PVMSVGA3DSURFACE pDstSurface;
405	rc = vmsvga3dSurfaceFromSid(pState, sidDst, &pDstSurface);
406	AssertRCReturn(rc, rc);
407
408	AssertReturn(pSrcSfcImg->face < pSrcSurface->cFaces, VERR_INVALID_PARAMETER);
409	AssertReturn(pSrcSfcImg->mipmap < pSrcSurface->cLevels, VERR_INVALID_PARAMETER);
410	AssertReturn(pDstSfcImg->face < pDstSurface->cFaces, VERR_INVALID_PARAMETER);
411	AssertReturn(pDstSfcImg->mipmap < pDstSurface->cLevels, VERR_INVALID_PARAMETER);
412
413	PVMSVGA3DCONTEXT pContext;
414	#ifdef VMSVGA3D_OPENGL
415	LogFunc(("src sid=%u (%d,%d)(%d,%d) dest sid=%u (%d,%d)(%d,%d) mode=%x\n",
416	sidSrc, pSrcBox->x, pSrcBox->y, pSrcBox->x + pSrcBox->w, pSrcBox->y + pSrcBox->h,
417	sidDst, pDstBox->x, pDstBox->y, pDstBox->x + pDstBox->w, pDstBox->y + pDstBox->h, enmMode));
418	pContext = &pState->SharedCtx;
419	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
420	#else
421	LogFunc(("src sid=%u cid=%u (%d,%d)(%d,%d) dest sid=%u cid=%u (%d,%d)(%d,%d) mode=%x\n",
422	sidSrc, pSrcSurface->idAssociatedContext, pSrcBox->x, pSrcBox->y, pSrcBox->x + pSrcBox->w, pSrcBox->y + pSrcBox->h,
423	sidDst, pDstSurface->idAssociatedContext, pDstBox->x, pDstBox->y, pDstBox->x + pDstBox->w, pDstBox->y + pDstBox->h, enmMode));
424
425	uint32_t cid = pDstSurface->idAssociatedContext;
426	if (cid == SVGA3D_INVALID_ID)
427	cid = pSrcSurface->idAssociatedContext;
428
429	/* At least one of surfaces must be in hardware. */
430	AssertReturn(cid != SVGA3D_INVALID_ID, VERR_INVALID_PARAMETER);
431
432	rc = vmsvga3dContextFromCid(pState, cid, &pContext);
433	AssertRCReturn(rc, rc);
434	#endif
435
436	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSrcSurface))
437	{
438	/* Unknown surface type; turn it into a texture, which can be used for other purposes too. */
439	LogFunc(("unknown src sid=%u type=%d format=%d -> create texture\n", sidSrc, pSrcSurface->surfaceFlags, pSrcSurface->format));
440	rc = vmsvga3dBackCreateTexture(pState, pContext, pContext->id, pSrcSurface);
441	AssertRCReturn(rc, rc);
442	}
443
444	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pDstSurface))
445	{
446	/* Unknown surface type; turn it into a texture, which can be used for other purposes too. */
447	LogFunc(("unknown dest sid=%u type=%d format=%d -> create texture\n", sidDst, pDstSurface->surfaceFlags, pDstSurface->format));
448	rc = vmsvga3dBackCreateTexture(pState, pContext, pContext->id, pDstSurface);
449	AssertRCReturn(rc, rc);
450	}
451
452	PVMSVGA3DMIPMAPLEVEL pSrcMipmapLevel;
453	rc = vmsvga3dMipmapLevel(pSrcSurface, pSrcSfcImg->face, pSrcSfcImg->mipmap, &pSrcMipmapLevel);
454	AssertRCReturn(rc, rc);
455
456	PVMSVGA3DMIPMAPLEVEL pDstMipmapLevel;
457	rc = vmsvga3dMipmapLevel(pDstSurface, pDstSfcImg->face, pDstSfcImg->mipmap, &pDstMipmapLevel);
458	AssertRCReturn(rc, rc);
459
460	SVGA3dBox clipSrcBox = *pSrcBox;
461	SVGA3dBox clipDstBox = *pDstBox;
462	vmsvgaR3ClipBox(&pSrcMipmapLevel->mipmapSize, &clipSrcBox);
463	vmsvgaR3ClipBox(&pDstMipmapLevel->mipmapSize, &clipDstBox);
464
465	return vmsvga3dBackSurfaceStretchBlt(pThis, pState,
466	pDstSurface, pDstSfcImg->face, pDstSfcImg->mipmap, &clipDstBox,
467	pSrcSurface, pSrcSfcImg->face, pSrcSfcImg->mipmap, &clipSrcBox,
468	enmMode, pContext);
469	}
470
471	/**
472	* Implements the SVGA_3D_CMD_SURFACE_DMA command (fifo).
473	*
474	* @returns VBox status code (currently ignored).
475	* @param pThis The shared VGA/VMSVGA instance data.
476	* @param pThisCC The VGA/VMSVGA state for ring-3.
477	* @param guest .
478	* @param host .
479	* @param transfer .
480	* @param cCopyBoxes .
481	* @param paBoxes .
482	*/
483	int vmsvga3dSurfaceDMA(PVGASTATE pThis, PVGASTATECC pThisCC, SVGAGuestImage guest, SVGA3dSurfaceImageId host,
484	SVGA3dTransferType transfer, uint32_t cCopyBoxes, SVGA3dCopyBox *paBoxes)
485	{
486	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
487	AssertReturn(pState, VERR_NO_MEMORY);
488
489	PVMSVGA3DSURFACE pSurface;
490	int rc = vmsvga3dSurfaceFromSid(pState, host.sid, &pSurface);
491	AssertRCReturn(rc, rc);
492
493	LogFunc(("%sguestptr gmr=%x offset=%x pitch=%x host sid=%u face=%d mipmap=%d transfer=%s cCopyBoxes=%d\n",
494	(pSurface->surfaceFlags & SVGA3D_SURFACE_HINT_TEXTURE) ? "TEXTURE " : "",
495	guest.ptr.gmrId, guest.ptr.offset, guest.pitch,
496	host.sid, host.face, host.mipmap, (transfer == SVGA3D_WRITE_HOST_VRAM) ? "READ" : "WRITE", cCopyBoxes));
497
498	PVMSVGA3DMIPMAPLEVEL pMipLevel;
499	rc = vmsvga3dMipmapLevel(pSurface, host.face, host.mipmap, &pMipLevel);
500	AssertRCReturn(rc, rc);
501
502	PVMSVGA3DCONTEXT pContext = NULL;
503	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
504	{
505	/*
506	* Not realized in host hardware/library yet, we have to work with
507	* the copy of the data we've got in VMSVGA3DMIMAPLEVEL::pSurfaceData.
508	*/
509	AssertReturn(pMipLevel->pSurfaceData, VERR_INTERNAL_ERROR);
510	}
511	else
512	{
513	#ifdef VMSVGA3D_DIRECT3D
514	/* Flush the drawing pipeline for this surface as it could be used in a shared context. */
515	vmsvga3dSurfaceFlush(pSurface);
516	#elif defined(VMSVGA3D_DX)
517	/** @todo */
518	#else /* VMSVGA3D_OPENGL */
519	pContext = &pState->SharedCtx;
520	VMSVGA3D_SET_CURRENT_CONTEXT(pState, pContext);
521	#endif
522	}
523
524	/* SVGA_3D_CMD_SURFACE_DMA:
525	* "define the 'source' in each copyBox as the guest image and the
526	* 'destination' as the host image, regardless of transfer direction."
527	*/
528	for (uint32_t i = 0; i < cCopyBoxes; ++i)
529	{
530	Log(("Copy box (%s) %d (%d,%d,%d)(%d,%d,%d) dest (%d,%d)\n",
531	VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface) ? "hw" : "mem",
532	i, paBoxes[i].srcx, paBoxes[i].srcy, paBoxes[i].srcz, paBoxes[i].w, paBoxes[i].h, paBoxes[i].d, paBoxes[i].x, paBoxes[i].y));
533
534	/* Apparently we're supposed to clip it (gmr test sample) */
535
536	/* The copybox's "dest" is coords in the host surface. Verify them against the surface's mipmap size. */
537	SVGA3dBox hostBox;
538	hostBox.x = paBoxes[i].x;
539	hostBox.y = paBoxes[i].y;
540	hostBox.z = paBoxes[i].z;
541	hostBox.w = paBoxes[i].w;
542	hostBox.h = paBoxes[i].h;
543	hostBox.d = paBoxes[i].d;
544	vmsvgaR3ClipBox(&pMipLevel->mipmapSize, &hostBox);
545
546	if ( !hostBox.w
547	\|\| !hostBox.h
548	\|\| !hostBox.d)
549	{
550	Log(("Skip empty box\n"));
551	continue;
552	}
553	RT_UNTRUSTED_VALIDATED_FENCE();
554
555	/* Adjust the guest, i.e. "src", point.
556	* Do not try to verify them here because vmsvgaR3GmrTransfer takes care of this.
557	*/
558	uint32_t const srcx = paBoxes[i].srcx + (hostBox.x - paBoxes[i].x);
559	uint32_t const srcy = paBoxes[i].srcy + (hostBox.y - paBoxes[i].y);
560	uint32_t const srcz = paBoxes[i].srcz + (hostBox.z - paBoxes[i].z);
561
562	/* Calculate offsets of the image blocks for the transfer. */
563	uint32_t u32HostBlockX;
564	uint32_t u32HostBlockY;
565	uint32_t u32GuestBlockX;
566	uint32_t u32GuestBlockY;
567	uint32_t cBlocksX;
568	uint32_t cBlocksY;
569	if (RT_LIKELY(pSurface->cxBlock == 1 && pSurface->cyBlock == 1))
570	{
571	u32HostBlockX = hostBox.x;
572	u32HostBlockY = hostBox.y;
573
574	u32GuestBlockX = srcx;
575	u32GuestBlockY = srcy;
576
577	cBlocksX = hostBox.w;
578	cBlocksY = hostBox.h;
579	}
580	else
581	{
582	/* Pixels to blocks. */
583	u32HostBlockX = hostBox.x / pSurface->cxBlock;
584	u32HostBlockY = hostBox.y / pSurface->cyBlock;
585	Assert(u32HostBlockX * pSurface->cxBlock == hostBox.x);
586	Assert(u32HostBlockY * pSurface->cyBlock == hostBox.y);
587
588	u32GuestBlockX = srcx / pSurface->cxBlock;
589	u32GuestBlockY = srcy / pSurface->cyBlock;
590	Assert(u32GuestBlockX * pSurface->cxBlock == srcx);
591	Assert(u32GuestBlockY * pSurface->cyBlock == srcy);
592
593	cBlocksX = (hostBox.w + pSurface->cxBlock - 1) / pSurface->cxBlock;
594	cBlocksY = (hostBox.h + pSurface->cyBlock - 1) / pSurface->cyBlock;
595	}
596
597	uint32_t cbGuestPitch = guest.pitch;
598	if (cbGuestPitch == 0)
599	{
600	/* Host must "assume image is tightly packed". Our surfaces are. */
601	cbGuestPitch = pMipLevel->cbSurfacePitch;
602	}
603	else
604	{
605	/* vmsvgaR3GmrTransfer will verify the value, just check it is sane. */
606	AssertReturn(cbGuestPitch <= SVGA3D_MAX_SURFACE_MEM_SIZE, VERR_INVALID_PARAMETER);
607	RT_UNTRUSTED_VALIDATED_FENCE();
608	}
609
610	/* srcx, srcy and srcz values are used to calculate the guest offset.
611	* The offset will be verified by vmsvgaR3GmrTransfer, so just check for overflows here.
612	*/
613	AssertReturn(srcz < UINT32_MAX / pMipLevel->mipmapSize.height / cbGuestPitch, VERR_INVALID_PARAMETER);
614	AssertReturn(u32GuestBlockY < UINT32_MAX / cbGuestPitch, VERR_INVALID_PARAMETER);
615	AssertReturn(u32GuestBlockX < UINT32_MAX / pSurface->cbBlock, VERR_INVALID_PARAMETER);
616	RT_UNTRUSTED_VALIDATED_FENCE();
617
618	if ( !VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface)
619	\|\| VMSVGA3DSURFACE_NEEDS_DATA(pSurface))
620	{
621	uint64_t uGuestOffset = u32GuestBlockX * pSurface->cbBlock +
622	u32GuestBlockY * cbGuestPitch +
623	srcz * pMipLevel->mipmapSize.height * cbGuestPitch;
624	AssertReturn(uGuestOffset < UINT32_MAX, VERR_INVALID_PARAMETER);
625
626	/* vmsvga3dSurfaceDefine verifies the surface dimensions and clipBox is within them. */
627	uint32_t uHostOffset = u32HostBlockX * pSurface->cbBlock +
628	u32HostBlockY * pMipLevel->cbSurfacePitch +
629	hostBox.z * pMipLevel->cbSurfacePlane;
630	AssertReturn(uHostOffset < pMipLevel->cbSurface, VERR_INTERNAL_ERROR);
631
632	for (uint32_t z = 0; z < hostBox.d; ++z)
633	{
634	rc = vmsvgaR3GmrTransfer(pThis,
635	pThisCC,
636	transfer,
637	(uint8_t *)pMipLevel->pSurfaceData,
638	pMipLevel->cbSurface,
639	uHostOffset,
640	(int32_t)pMipLevel->cbSurfacePitch,
641	guest.ptr,
642	(uint32_t)uGuestOffset,
643	cbGuestPitch,
644	cBlocksX * pSurface->cbBlock,
645	cBlocksY);
646	AssertRC(rc);
647
648	Log4(("first line [z=%d] (updated at offset 0x%x):\n%.*Rhxd\n",
649	z, uHostOffset, pMipLevel->cbSurfacePitch, pMipLevel->pSurfaceData));
650
651	uHostOffset += pMipLevel->cbSurfacePlane;
652	uGuestOffset += pMipLevel->mipmapSize.height * cbGuestPitch;
653	AssertReturn(uGuestOffset < UINT32_MAX, VERR_INVALID_PARAMETER);
654	}
655	}
656
657	if (VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
658	{
659	SVGA3dCopyBox clipBox;
660	clipBox.x = hostBox.x;
661	clipBox.y = hostBox.y;
662	clipBox.z = hostBox.z;
663	clipBox.w = hostBox.w;
664	clipBox.h = hostBox.h;
665	clipBox.d = hostBox.d;
666	clipBox.srcx = srcx;
667	clipBox.srcy = srcy;
668	clipBox.srcz = srcz;
669	rc = vmsvga3dBackSurfaceDMACopyBox(pThis, pThisCC, pState, pSurface, pMipLevel, host.face, host.mipmap,
670	guest.ptr, cbGuestPitch, transfer,
671	&clipBox, pContext, rc, i);
672	AssertRC(rc);
673	}
674	}
675
676	if (!VMSVGA3DSURFACE_HAS_HW_SURFACE(pSurface))
677	{
678	pMipLevel->fDirty = true;
679	pSurface->fDirty = true;
680	}
681
682	return rc;
683	}
684
685	static int vmsvga3dQueryWriteResult(PVGASTATE pThis, PVGASTATECC pThisCC, SVGAGuestPtr guestResult,
686	SVGA3dQueryState enmState, uint32_t u32Result)
687	{
688	SVGA3dQueryResult queryResult;
689	queryResult.totalSize = sizeof(queryResult); /* Set by guest before query is ended. */
690	queryResult.state = enmState; /* Set by host or guest. See SVGA3dQueryState. */
691	queryResult.result32 = u32Result;
692
693	int rc = vmsvgaR3GmrTransfer(pThis, pThisCC, SVGA3D_READ_HOST_VRAM,
694	(uint8_t *)&queryResult, sizeof(queryResult), 0, sizeof(queryResult),
695	guestResult, 0, sizeof(queryResult), sizeof(queryResult), 1);
696	AssertRC(rc);
697	return rc;
698	}
699
700	int vmsvga3dQueryBegin(PVGASTATECC pThisCC, uint32_t cid, SVGA3dQueryType type)
701	{
702	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
703	AssertReturn(pState, VERR_NO_MEMORY);
704
705	LogFunc(("cid=%u type=%d\n", cid, type));
706
707	PVMSVGA3DCONTEXT pContext;
708	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
709	AssertRCReturn(rc, rc);
710
711	if (type == SVGA3D_QUERYTYPE_OCCLUSION)
712	{
713	VMSVGA3DQUERY *p = &pContext->occlusion;
714	if (!VMSVGA3DQUERY_EXISTS(p))
715	{
716	/* Lazy creation of the query object. */
717	rc = vmsvga3dOcclusionQueryCreate(pState, pContext);
718	AssertRCReturn(rc, rc);
719	}
720
721	rc = vmsvga3dOcclusionQueryBegin(pState, pContext);
722	AssertRCReturn(rc, rc);
723
724	p->enmQueryState = VMSVGA3DQUERYSTATE_BUILDING;
725	p->u32QueryResult = 0;
726
727	return VINF_SUCCESS;
728	}
729
730	/* Nothing else for VGPU9. */
731	AssertFailedReturn(VERR_NOT_IMPLEMENTED);
732	}
733
734	int vmsvga3dQueryEnd(PVGASTATECC pThisCC, uint32_t cid, SVGA3dQueryType type, SVGAGuestPtr guestResult)
735	{
736	RT_NOREF(guestResult);
737	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
738	AssertReturn(pState, VERR_NO_MEMORY);
739
740	LogFunc(("cid=%u type=%d guestResult %d:0x%x\n", cid, type, guestResult.gmrId, guestResult.offset));
741
742	PVMSVGA3DCONTEXT pContext;
743	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
744	AssertRCReturn(rc, rc);
745
746	if (type == SVGA3D_QUERYTYPE_OCCLUSION)
747	{
748	VMSVGA3DQUERY *p = &pContext->occlusion;
749	Assert(p->enmQueryState == VMSVGA3DQUERYSTATE_BUILDING);
750	AssertMsgReturn(VMSVGA3DQUERY_EXISTS(p), ("Query is NULL\n"), VERR_INTERNAL_ERROR);
751
752	rc = vmsvga3dOcclusionQueryEnd(pState, pContext);
753	AssertRCReturn(rc, rc);
754
755	p->enmQueryState = VMSVGA3DQUERYSTATE_ISSUED;
756
757	/* Do not touch guestResult, because the guest will call WaitForQuery. */
758	return VINF_SUCCESS;
759	}
760
761	/* Nothing else for VGPU9. */
762	AssertFailedReturn(VERR_NOT_IMPLEMENTED);
763	}
764
765	int vmsvga3dQueryWait(PVGASTATE pThis, PVGASTATECC pThisCC, uint32_t cid, SVGA3dQueryType type, SVGAGuestPtr guestResult)
766	{
767	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
768	AssertReturn(pState, VERR_NO_MEMORY);
769
770	LogFunc(("cid=%u type=%d guestResult GMR%d:0x%x\n", cid, type, guestResult.gmrId, guestResult.offset));
771
772	PVMSVGA3DCONTEXT pContext;
773	int rc = vmsvga3dContextFromCid(pState, cid, &pContext);
774	AssertRCReturn(rc, rc);
775
776	if (type == SVGA3D_QUERYTYPE_OCCLUSION)
777	{
778	VMSVGA3DQUERY *p = &pContext->occlusion;
779	if (VMSVGA3DQUERY_EXISTS(p))
780	{
781	if (p->enmQueryState == VMSVGA3DQUERYSTATE_ISSUED)
782	{
783	/* Only if not already in SIGNALED state,
784	* i.e. not a second read from the guest or after restoring saved state.
785	*/
786	uint32_t u32Pixels = 0;
787	rc = vmsvga3dOcclusionQueryGetData(pState, pContext, &u32Pixels);
788	if (RT_SUCCESS(rc))
789	{
790	p->enmQueryState = VMSVGA3DQUERYSTATE_SIGNALED;
791	p->u32QueryResult += u32Pixels; /* += because it might contain partial result from saved state. */
792	}
793	}
794
795	if (RT_SUCCESS(rc))
796	{
797	/* Return data to the guest. */
798	vmsvga3dQueryWriteResult(pThis, pThisCC, guestResult, SVGA3D_QUERYSTATE_SUCCEEDED, p->u32QueryResult);
799	return VINF_SUCCESS;
800	}
801	}
802	else
803	{
804	AssertMsgFailed(("GetData Query is NULL\n"));
805	}
806
807	rc = VERR_INTERNAL_ERROR;
808	}
809	else
810	{
811	rc = VERR_NOT_IMPLEMENTED;
812	}
813
814	vmsvga3dQueryWriteResult(pThis, pThisCC, guestResult, SVGA3D_QUERYSTATE_FAILED, 0);
815	AssertFailedReturn(rc);
816	}
817
818	int vmsvga3dSurfaceBlitToScreen(PVGASTATE pThis, PVGASTATECC pThisCC, uint32_t idDstScreen, SVGASignedRect destRect,
819	SVGA3dSurfaceImageId srcImage, SVGASignedRect srcRect, uint32_t cRects, SVGASignedRect *pRect)
820	{
821	/* Requires SVGA_FIFO_CAP_SCREEN_OBJECT support */
822	LogFunc(("dest=%d (%d,%d)(%d,%d) sid=%u (face=%d, mipmap=%d) (%d,%d)(%d,%d) cRects=%d\n",
823	idDstScreen, destRect.left, destRect.top, destRect.right, destRect.bottom, srcImage.sid, srcImage.face, srcImage.mipmap,
824	srcRect.left, srcRect.top, srcRect.right, srcRect.bottom, cRects));
825	for (uint32_t i = 0; i < cRects; i++)
826	{
827	LogFunc(("clipping rect %d (%d,%d)(%d,%d)\n", i, pRect[i].left, pRect[i].top, pRect[i].right, pRect[i].bottom));
828	}
829
830	VMSVGASCREENOBJECT *pScreen = vmsvgaR3GetScreenObject(pThisCC, idDstScreen);
831	AssertReturn(pScreen, VERR_INTERNAL_ERROR);
832
833	/* vmwgfx driver does not always initialize srcImage.mipmap and srcImage.face. They are assumed to be zero. */
834	SVGA3dSurfaceImageId src;
835	src.sid = srcImage.sid;
836	src.mipmap = 0;
837	src.face = 0;
838
839	if (pScreen->pHwScreen)
840	{
841	/* Use the backend accelerated method, if available. */
842	int rc = vmsvga3dBackSurfaceBlitToScreen(pThisCC, pScreen,
843	destRect, src, srcRect, cRects, pRect);
844	if (rc == VINF_SUCCESS)
845	{
846	return VINF_SUCCESS;
847	}
848	}
849
850	/** @todo scaling */
851	AssertReturn(destRect.right - destRect.left == srcRect.right - srcRect.left && destRect.bottom - destRect.top == srcRect.bottom - srcRect.top, VERR_INVALID_PARAMETER);
852
853	SVGA3dCopyBox box;
854	SVGAGuestImage dest;
855
856	box.srcz = 0;
857	box.z = 0;
858	box.d = 1;
859
860	dest.ptr.gmrId = SVGA_GMR_FRAMEBUFFER;
861	dest.ptr.offset = pScreen->offVRAM;
862	dest.pitch = pScreen->cbPitch;
863
864	if (cRects == 0)
865	{
866	/* easy case; no clipping */
867
868	/* SVGA_3D_CMD_SURFACE_DMA:
869	* 'define the "source" in each copyBox as the guest image and the
870	* "destination" as the host image, regardless of transfer direction.'
871	*
872	* Since the BlitToScreen operation transfers from a host surface to the guest VRAM,
873	* it must set the copyBox "source" to the guest destination coords and
874	* the copyBox "destination" to the host surface source coords.
875	*/
876	/* Host image. */
877	box.x = srcRect.left;
878	box.y = srcRect.top;
879	box.w = srcRect.right - srcRect.left;
880	box.h = srcRect.bottom - srcRect.top;
881	/* Guest image. */
882	box.srcx = destRect.left;
883	box.srcy = destRect.top;
884
885	int rc = vmsvga3dSurfaceDMA(pThis, pThisCC, dest, src, SVGA3D_READ_HOST_VRAM, 1, &box);
886	AssertRCReturn(rc, rc);
887
888	/* Update the guest image, which is at box.src. */
889	vmsvgaR3UpdateScreen(pThisCC, pScreen, box.srcx, box.srcy, box.w, box.h);
890	}
891	else
892	{
893	/** @todo merge into one SurfaceDMA call */
894	for (uint32_t i = 0; i < cRects; i++)
895	{
896	/* "The clip rectangle coordinates are measured
897	* relative to the top-left corner of destRect."
898	* Therefore they are relative to the top-left corner of srcRect as well.
899	*/
900
901	/* Host image. See 'SVGA_3D_CMD_SURFACE_DMA:' comment in the 'if' branch. */
902	box.x = srcRect.left + pRect[i].left;
903	box.y = srcRect.top + pRect[i].top;
904	box.w = pRect[i].right - pRect[i].left;
905	box.h = pRect[i].bottom - pRect[i].top;
906	/* Guest image. The target screen memory is currently in the guest VRAM. */
907	box.srcx = destRect.left + pRect[i].left;
908	box.srcy = destRect.top + pRect[i].top;
909
910	int rc = vmsvga3dSurfaceDMA(pThis, pThisCC, dest, src, SVGA3D_READ_HOST_VRAM, 1, &box);
911	AssertRCReturn(rc, rc);
912
913	/* Update the guest image, which is at box.src. */
914	vmsvgaR3UpdateScreen(pThisCC, pScreen, box.srcx, box.srcy, box.w, box.h);
915	}
916	}
917
918	return VINF_SUCCESS;
919	}
920
921	int vmsvga3dCommandPresent(PVGASTATE pThis, PVGASTATECC pThisCC, uint32_t sid, uint32_t cRects, SVGA3dCopyRect *pRect)
922	{
923	/* Deprecated according to svga3d_reg.h. */
924	PVMSVGA3DSTATE pState = pThisCC->svga.p3dState;
925	AssertReturn(pState, VERR_NO_MEMORY);
926
927	PVMSVGA3DSURFACE pSurface;
928	int rc = vmsvga3dSurfaceFromSid(pState, sid, &pSurface);
929	AssertRCReturn(rc, rc);
930
931	/** @todo Detect screen from coords? Or split rect to screens? */
932	VMSVGASCREENOBJECT *pScreen = vmsvgaR3GetScreenObject(pThisCC, 0);
933	AssertReturn(pScreen, VERR_INTERNAL_ERROR);
934
935	/* If there are no recangles specified, just grab a screenful. */
936	SVGA3dCopyRect DummyRect;
937	if (cRects != 0)
938	{ /* likely */ }
939	else
940	{
941	/** @todo Find the usecase for this or check what the original device does.
942	* The original code was doing some scaling based on the surface
943	* size... */
944	AssertMsgFailed(("No rects to present. Who is doing that and what do they actually expect?\n"));
945	DummyRect.x = DummyRect.srcx = 0;
946	DummyRect.y = DummyRect.srcy = 0;
947	DummyRect.w = pScreen->cWidth;
948	DummyRect.h = pScreen->cHeight;
949	cRects = 1;
950	pRect = &DummyRect;
951	}
952
953	uint32_t i;
954	for (i = 0; i < cRects; ++i)
955	{
956	uint32_t idDstScreen = 0; /** @todo Use virtual coords: SVGA_ID_INVALID. */
957	SVGASignedRect destRect;
958	destRect.left = pRect[i].x;
959	destRect.top = pRect[i].y;
960	destRect.right = pRect[i].x + pRect[i].w;
961	destRect.bottom = pRect[i].y + pRect[i].h;
962
963	SVGA3dSurfaceImageId src;
964	src.sid = sid;
965	src.face = 0;
966	src.mipmap = 0;
967
968	SVGASignedRect srcRect;
969	srcRect.left = pRect[i].srcx;
970	srcRect.top = pRect[i].srcy;
971	srcRect.right = pRect[i].srcx + pRect[i].w;
972	srcRect.bottom = pRect[i].srcy + pRect[i].h;
973
974	/* Entire rect. */
975	rc = vmsvga3dSurfaceBlitToScreen(pThis, pThisCC, idDstScreen, destRect, src, srcRect, 0, NULL);
976	AssertRCReturn(rc, rc);
977	}
978
979	return VINF_SUCCESS;
980	}
981
982	int vmsvga3dDefineScreen(PVGASTATE pThis, PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
983	{
984	if (pScreen->pHwScreen)
985	{
986	vmsvga3dBackDestroyScreen(pThisCC, pScreen);
987	}
988
989	int rc = vmsvga3dBackDefineScreen(pThis, pThisCC, pScreen);
990	if (RT_SUCCESS(rc))
991	{
992	LogRelMax(1, ("VMSVGA: using accelerated graphics output\n"));
993	}
994	return rc;
995	}
996
997	int vmsvga3dDestroyScreen(PVGASTATECC pThisCC, VMSVGASCREENOBJECT *pScreen)
998	{
999	return vmsvga3dBackDestroyScreen(pThisCC, pScreen);
1000	}

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source: vbox/trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d.cpp@ 87979

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