1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
29 * Command construction utility for the SVGA3D protocol used by
30 * the VMware SVGA device, based on the svgautil library.
33 #include "svga_winsys.h"
34 #include "svga_screen_buffer.h"
35 #include "svga_screen_texture.h"
39 *----------------------------------------------------------------------
41 * surface_to_surfaceid --
43 * Utility function for surface ids.
44 * Can handle null surface. Does a surface_reallocation so you need
45 * to have allocated the fifo space before converting.
51 * One surface relocation is preformed for texture handle.
53 *----------------------------------------------------------------------
57 void surface_to_surfaceid(struct svga_winsys_context *swc, // IN
58 struct pipe_surface *surface, // IN
59 SVGA3dSurfaceImageId *id, // OUT
63 struct svga_surface *s = svga_surface(surface);
64 swc->surface_relocation(swc, &id->sid, s->handle, flags);
65 id->face = s->real_face; /* faces have the same order */
66 id->mipmap = s->real_level;
69 id->sid = SVGA3D_INVALID_ID;
77 *----------------------------------------------------------------------
79 * SVGA3D_FIFOReserve --
81 * Reserve space for an SVGA3D FIFO command.
83 * The 2D SVGA commands have been around for a while, so they
84 * have a rather asymmetric structure. The SVGA3D protocol is
85 * more uniform: each command begins with a header containing the
86 * command number and the full size.
88 * This is a convenience wrapper around SVGA_FIFOReserve. We
89 * reserve space for the whole command, and write the header.
91 * This function must be paired with SVGA_FIFOCommitAll().
94 * Returns a pointer to the space reserved for command-specific
95 * data. It must be 'cmdSize' bytes long.
98 * Begins a FIFO reservation.
100 *----------------------------------------------------------------------
104 SVGA3D_FIFOReserve(struct svga_winsys_context *swc,
106 uint32 cmdSize, // IN
107 uint32 nr_relocs) // IN
109 SVGA3dCmdHeader *header;
111 header = swc->reserve(swc, sizeof *header + cmdSize, nr_relocs);
116 header->size = cmdSize;
123 SVGA_FIFOCommitAll(struct svga_winsys_context *swc)
130 *----------------------------------------------------------------------
132 * SVGA3D_DefineContext --
134 * Create a new context, to be referred to with the provided ID.
136 * Context objects encapsulate all render state, and shader
137 * objects are per-context.
139 * Surfaces are not per-context. The same surface can be shared
140 * between multiple contexts, and surface operations can occur
143 * If the provided context ID already existed, it is redefined.
145 * Context IDs are arbitrary small non-negative integers,
146 * global to the entire SVGA device.
154 *----------------------------------------------------------------------
158 SVGA3D_DefineContext(struct svga_winsys_context *swc) // IN
160 SVGA3dCmdDefineContext *cmd;
162 cmd = SVGA3D_FIFOReserve(swc,
163 SVGA_3D_CMD_CONTEXT_DEFINE, sizeof *cmd, 0);
165 return PIPE_ERROR_OUT_OF_MEMORY;
176 *----------------------------------------------------------------------
178 * SVGA3D_DestroyContext --
180 * Delete a context created with SVGA3D_DefineContext.
188 *----------------------------------------------------------------------
192 SVGA3D_DestroyContext(struct svga_winsys_context *swc) // IN
194 SVGA3dCmdDestroyContext *cmd;
196 cmd = SVGA3D_FIFOReserve(swc,
197 SVGA_3D_CMD_CONTEXT_DESTROY, sizeof *cmd, 0);
199 return PIPE_ERROR_OUT_OF_MEMORY;
210 *----------------------------------------------------------------------
212 * SVGA3D_BeginDefineSurface --
214 * Begin a SURFACE_DEFINE command. This reserves space for it in
215 * the FIFO, and returns pointers to the command's faces and
218 * This function must be paired with SVGA_FIFOCommitAll().
219 * The faces and mipSizes arrays are initialized to zero.
221 * This creates a "surface" object in the SVGA3D device,
222 * with the provided surface ID (sid). Surfaces are generic
223 * containers for host VRAM objects like textures, vertex
224 * buffers, and depth/stencil buffers.
226 * Surfaces are hierarchial:
228 * - Surface may have multiple faces (for cube maps)
230 * - Each face has a list of mipmap levels
232 * - Each mipmap image may have multiple volume
233 * slices, if the image is three dimensional.
235 * - Each slice is a 2D array of 'blocks'
237 * - Each block may be one or more pixels.
238 * (Usually 1, more for DXT or YUV formats.)
240 * Surfaces are generic host VRAM objects. The SVGA3D device
241 * may optimize surfaces according to the format they were
242 * created with, but this format does not limit the ways in
243 * which the surface may be used. For example, a depth surface
244 * can be used as a texture, or a floating point image may
245 * be used as a vertex buffer. Some surface usages may be
246 * lower performance, due to software emulation, but any
247 * usage should work with any surface.
249 * If 'sid' is already defined, the old surface is deleted
250 * and this new surface replaces it.
252 * Surface IDs are arbitrary small non-negative integers,
253 * global to the entire SVGA device.
256 * Returns pointers to arrays allocated in the FIFO for 'faces'
260 * Begins a FIFO reservation.
262 *----------------------------------------------------------------------
266 SVGA3D_BeginDefineSurface(struct svga_winsys_context *swc,
267 struct svga_winsys_surface *sid, // IN
268 SVGA3dSurfaceFlags flags, // IN
269 SVGA3dSurfaceFormat format, // IN
270 SVGA3dSurfaceFace **faces, // OUT
271 SVGA3dSize **mipSizes, // OUT
272 uint32 numMipSizes) // IN
274 SVGA3dCmdDefineSurface *cmd;
276 cmd = SVGA3D_FIFOReserve(swc,
277 SVGA_3D_CMD_SURFACE_DEFINE, sizeof *cmd +
278 sizeof **mipSizes * numMipSizes, 1);
280 return PIPE_ERROR_OUT_OF_MEMORY;
282 swc->surface_relocation(swc, &cmd->sid, sid, PIPE_BUFFER_USAGE_GPU_WRITE);
283 cmd->surfaceFlags = flags;
284 cmd->format = format;
286 *faces = &cmd->face[0];
287 *mipSizes = (SVGA3dSize*) &cmd[1];
289 memset(*faces, 0, sizeof **faces * SVGA3D_MAX_SURFACE_FACES);
290 memset(*mipSizes, 0, sizeof **mipSizes * numMipSizes);
297 *----------------------------------------------------------------------
299 * SVGA3D_DefineSurface2D --
301 * This is a simplified version of SVGA3D_BeginDefineSurface(),
302 * which does not support cube maps, mipmaps, or volume textures.
310 *----------------------------------------------------------------------
314 SVGA3D_DefineSurface2D(struct svga_winsys_context *swc, // IN
315 struct svga_winsys_surface *sid, // IN
318 SVGA3dSurfaceFormat format) // IN
320 SVGA3dSize *mipSizes;
321 SVGA3dSurfaceFace *faces;
324 ret = SVGA3D_BeginDefineSurface(swc,
325 sid, 0, format, &faces, &mipSizes, 1);
329 faces[0].numMipLevels = 1;
331 mipSizes[0].width = width;
332 mipSizes[0].height = height;
333 mipSizes[0].depth = 1;
342 *----------------------------------------------------------------------
344 * SVGA3D_DestroySurface --
346 * Release the host VRAM encapsulated by a particular surface ID.
354 *----------------------------------------------------------------------
358 SVGA3D_DestroySurface(struct svga_winsys_context *swc,
359 struct svga_winsys_surface *sid) // IN
361 SVGA3dCmdDestroySurface *cmd;
363 cmd = SVGA3D_FIFOReserve(swc,
364 SVGA_3D_CMD_SURFACE_DESTROY, sizeof *cmd, 1);
366 return PIPE_ERROR_OUT_OF_MEMORY;
368 swc->surface_relocation(swc, &cmd->sid, sid, PIPE_BUFFER_USAGE_GPU_READ);
376 *----------------------------------------------------------------------
378 * SVGA3D_BeginSurfaceDMA--
380 * Begin a SURFACE_DMA command. This reserves space for it in
381 * the FIFO, and returns a pointer to the command's box array.
382 * This function must be paired with SVGA_FIFOCommitAll().
384 * When the SVGA3D device asynchronously processes this FIFO
385 * command, a DMA operation is performed between host VRAM and
386 * a generic SVGAGuestPtr. The guest pointer may refer to guest
387 * VRAM (provided by the SVGA PCI device) or to guest system
388 * memory that has been set up as a Guest Memory Region (GMR)
389 * by the SVGA device.
391 * The guest's DMA buffer must remain valid (not freed, paged out,
392 * or overwritten) until the host has finished processing this
393 * command. The guest can determine that the host has finished
394 * by using the SVGA device's FIFO Fence mechanism.
396 * The guest's image buffer can be an arbitrary size and shape.
397 * Guest image data is interpreted according to the SVGA3D surface
398 * format specified when the surface was defined.
400 * The caller may optionally define the guest image's pitch.
401 * guestImage->pitch can either be zero (assume image is tightly
402 * packed) or it must be the number of bytes between vertically
403 * adjacent image blocks.
405 * The provided copybox list specifies which regions of the source
406 * image are to be copied, and where they appear on the destination.
408 * NOTE: srcx/srcy are always on the guest image and x/y are
409 * always on the host image, regardless of the actual transfer
412 * For efficiency, the SVGA3D device is free to copy more data
413 * than specified. For example, it may round copy boxes outwards
414 * such that they lie on particular alignment boundaries.
416 *----------------------------------------------------------------------
420 SVGA3D_SurfaceDMA(struct svga_winsys_context *swc,
421 struct svga_transfer *st, // IN
422 SVGA3dTransferType transfer, // IN
423 const SVGA3dCopyBox *boxes, // IN
424 uint32 numBoxes) // IN
426 struct svga_texture *texture = svga_texture(st->base.texture);
427 SVGA3dCmdSurfaceDMA *cmd;
428 SVGA3dCmdSurfaceDMASuffix *pSuffix;
429 uint32 boxesSize = sizeof *boxes * numBoxes;
430 unsigned region_flags;
431 unsigned surface_flags;
433 if(transfer == SVGA3D_WRITE_HOST_VRAM) {
434 region_flags = PIPE_BUFFER_USAGE_GPU_READ;
435 surface_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
437 else if(transfer == SVGA3D_READ_HOST_VRAM) {
438 region_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
439 surface_flags = PIPE_BUFFER_USAGE_GPU_READ;
443 return PIPE_ERROR_BAD_INPUT;
446 cmd = SVGA3D_FIFOReserve(swc,
447 SVGA_3D_CMD_SURFACE_DMA,
448 sizeof *cmd + boxesSize + sizeof *pSuffix,
451 return PIPE_ERROR_OUT_OF_MEMORY;
453 swc->region_relocation(swc, &cmd->guest.ptr, st->hwbuf, 0, region_flags);
454 cmd->guest.pitch = st->base.stride;
456 swc->surface_relocation(swc, &cmd->host.sid, texture->handle, surface_flags);
457 cmd->host.face = st->base.face; /* PIPE_TEX_FACE_* and SVGA3D_CUBEFACE_* match */
458 cmd->host.mipmap = st->base.level;
460 cmd->transfer = transfer;
462 memcpy(&cmd[1], boxes, boxesSize);
464 pSuffix = (SVGA3dCmdSurfaceDMASuffix *)((uint8_t*)cmd + sizeof *cmd + boxesSize);
465 pSuffix->suffixSize = sizeof *pSuffix;
466 pSuffix->maximumOffset = st->hw_nblocksy*st->base.stride;
467 memset(&pSuffix->flags, 0, sizeof pSuffix->flags);
476 SVGA3D_BufferDMA(struct svga_winsys_context *swc,
477 struct svga_winsys_buffer *guest,
478 struct svga_winsys_surface *host,
479 SVGA3dTransferType transfer, // IN
481 uint32 guest_offset, // IN
482 uint32 host_offset, // IN
483 SVGA3dSurfaceDMAFlags flags) // IN
485 SVGA3dCmdSurfaceDMA *cmd;
487 SVGA3dCmdSurfaceDMASuffix *pSuffix;
488 unsigned region_flags;
489 unsigned surface_flags;
491 if(transfer == SVGA3D_WRITE_HOST_VRAM) {
492 region_flags = PIPE_BUFFER_USAGE_GPU_READ;
493 surface_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
495 else if(transfer == SVGA3D_READ_HOST_VRAM) {
496 region_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
497 surface_flags = PIPE_BUFFER_USAGE_GPU_READ;
501 return PIPE_ERROR_BAD_INPUT;
504 cmd = SVGA3D_FIFOReserve(swc,
505 SVGA_3D_CMD_SURFACE_DMA,
506 sizeof *cmd + sizeof *box + sizeof *pSuffix,
509 return PIPE_ERROR_OUT_OF_MEMORY;
511 swc->region_relocation(swc, &cmd->guest.ptr, guest, 0, region_flags);
512 cmd->guest.pitch = 0;
514 swc->surface_relocation(swc, &cmd->host.sid, host, surface_flags);
516 cmd->host.mipmap = 0;
518 cmd->transfer = transfer;
520 box = (SVGA3dCopyBox *)&cmd[1];
521 box->x = host_offset;
527 box->srcx = guest_offset;
531 pSuffix = (SVGA3dCmdSurfaceDMASuffix *)((uint8_t*)cmd + sizeof *cmd + sizeof *box);
532 pSuffix->suffixSize = sizeof *pSuffix;
533 pSuffix->maximumOffset = guest_offset + size;
534 pSuffix->flags = flags;
543 *----------------------------------------------------------------------
545 * SVGA3D_SetRenderTarget --
547 * Bind a surface object to a particular render target attachment
548 * point on the current context. Render target attachment points
549 * exist for color buffers, a depth buffer, and a stencil buffer.
551 * The SVGA3D device is quite lenient about the types of surfaces
552 * that may be used as render targets. The color buffers must
553 * all be the same size, but the depth and stencil buffers do not
554 * have to be the same size as the color buffer. All attachments
557 * Some combinations of render target formats may require software
558 * emulation, depending on the capabilities of the host graphics
559 * API and graphics hardware.
567 *----------------------------------------------------------------------
571 SVGA3D_SetRenderTarget(struct svga_winsys_context *swc,
572 SVGA3dRenderTargetType type, // IN
573 struct pipe_surface *surface) // IN
575 SVGA3dCmdSetRenderTarget *cmd;
577 cmd = SVGA3D_FIFOReserve(swc,
578 SVGA_3D_CMD_SETRENDERTARGET, sizeof *cmd, 1);
580 return PIPE_ERROR_OUT_OF_MEMORY;
587 surface_to_surfaceid(swc, surface, &cmd->target, PIPE_BUFFER_USAGE_GPU_WRITE);
600 *----------------------------------------------------------------------
602 * SVGA3D_DefineShader --
604 * Upload the bytecode for a new shader. The bytecode is "SVGA3D
605 * format", which is theoretically a binary-compatible superset
606 * of Microsoft's DirectX shader bytecode. In practice, the
607 * SVGA3D bytecode doesn't yet have any extensions to DirectX's
610 * The SVGA3D device supports shader models 1.1 through 2.0.
612 * The caller chooses a shader ID (small positive integer) by
613 * which this shader will be identified in future commands. This
614 * ID is in a namespace which is per-context and per-shader-type.
616 * 'bytecodeLen' is specified in bytes. It must be a multiple of 4.
624 *----------------------------------------------------------------------
628 SVGA3D_DefineShader(struct svga_winsys_context *swc,
630 SVGA3dShaderType type, // IN
631 const uint32 *bytecode, // IN
632 uint32 bytecodeLen) // IN
634 SVGA3dCmdDefineShader *cmd;
636 assert(bytecodeLen % 4 == 0);
638 cmd = SVGA3D_FIFOReserve(swc,
639 SVGA_3D_CMD_SHADER_DEFINE, sizeof *cmd + bytecodeLen,
642 return PIPE_ERROR_OUT_OF_MEMORY;
647 memcpy(&cmd[1], bytecode, bytecodeLen);
655 *----------------------------------------------------------------------
657 * SVGA3D_DestroyShader --
659 * Delete a shader that was created by SVGA3D_DefineShader. If
660 * the shader was the current vertex or pixel shader for its
661 * context, rendering results are undefined until a new shader is
670 *----------------------------------------------------------------------
674 SVGA3D_DestroyShader(struct svga_winsys_context *swc,
676 SVGA3dShaderType type) // IN
678 SVGA3dCmdDestroyShader *cmd;
680 cmd = SVGA3D_FIFOReserve(swc,
681 SVGA_3D_CMD_SHADER_DESTROY, sizeof *cmd,
684 return PIPE_ERROR_OUT_OF_MEMORY;
696 *----------------------------------------------------------------------
698 * SVGA3D_SetShaderConst --
700 * Set the value of a shader constant.
702 * Shader constants are analogous to uniform variables in GLSL,
703 * except that they belong to the render context rather than to
704 * an individual shader.
706 * Constants may have one of three types: A 4-vector of floats,
707 * a 4-vector of integers, or a single boolean flag.
715 *----------------------------------------------------------------------
719 SVGA3D_SetShaderConst(struct svga_winsys_context *swc,
721 SVGA3dShaderType type, // IN
722 SVGA3dShaderConstType ctype, // IN
723 const void *value) // IN
725 SVGA3dCmdSetShaderConst *cmd;
727 cmd = SVGA3D_FIFOReserve(swc,
728 SVGA_3D_CMD_SET_SHADER_CONST, sizeof *cmd,
731 return PIPE_ERROR_OUT_OF_MEMORY;
740 case SVGA3D_CONST_TYPE_FLOAT:
741 case SVGA3D_CONST_TYPE_INT:
742 memcpy(&cmd->values, value, sizeof cmd->values);
745 case SVGA3D_CONST_TYPE_BOOL:
746 memset(&cmd->values, 0, sizeof cmd->values);
747 cmd->values[0] = *(uint32*)value;
765 *----------------------------------------------------------------------
767 * SVGA3D_SetShader --
769 * Switch active shaders. This binds a new vertex or pixel shader
770 * to the specified context.
772 * A shader ID of SVGA3D_INVALID_ID unbinds any shader, switching
773 * back to the fixed function vertex or pixel pipeline.
781 *----------------------------------------------------------------------
785 SVGA3D_SetShader(struct svga_winsys_context *swc,
786 SVGA3dShaderType type, // IN
789 SVGA3dCmdSetShader *cmd;
791 cmd = SVGA3D_FIFOReserve(swc,
792 SVGA_3D_CMD_SET_SHADER, sizeof *cmd,
795 return PIPE_ERROR_OUT_OF_MEMORY;
807 *----------------------------------------------------------------------
809 * SVGA3D_BeginClear --
811 * Begin a CLEAR command. This reserves space for it in the FIFO,
812 * and returns a pointer to the command's rectangle array. This
813 * function must be paired with SVGA_FIFOCommitAll().
815 * Clear is a rendering operation which fills a list of
816 * rectangles with constant values on all render target types
817 * indicated by 'flags'.
819 * Clear is not affected by clipping, depth test, or other
820 * render state which affects the fragment pipeline.
826 * May write to attached render target surfaces.
828 *----------------------------------------------------------------------
832 SVGA3D_BeginClear(struct svga_winsys_context *swc,
833 SVGA3dClearFlag flags, // IN
836 uint32 stencil, // IN
837 SVGA3dRect **rects, // OUT
838 uint32 numRects) // IN
842 cmd = SVGA3D_FIFOReserve(swc,
844 sizeof *cmd + sizeof **rects * numRects,
847 return PIPE_ERROR_OUT_OF_MEMORY;
850 cmd->clearFlag = flags;
853 cmd->stencil = stencil;
854 *rects = (SVGA3dRect*) &cmd[1];
861 *----------------------------------------------------------------------
863 * SVGA3D_ClearRect --
865 * This is a simplified version of SVGA3D_BeginClear().
873 *----------------------------------------------------------------------
877 SVGA3D_ClearRect(struct svga_winsys_context *swc,
878 SVGA3dClearFlag flags, // IN
881 uint32 stencil, // IN
890 ret = SVGA3D_BeginClear(swc, flags, color, depth, stencil, &rect, 1);
892 return PIPE_ERROR_OUT_OF_MEMORY;
894 memset(rect, 0, sizeof *rect);
906 *----------------------------------------------------------------------
908 * SVGA3D_BeginDrawPrimitives --
910 * Begin a DRAW_PRIMITIVES command. This reserves space for it in
911 * the FIFO, and returns a pointer to the command's arrays.
912 * This function must be paired with SVGA_FIFOCommitAll().
914 * Drawing commands consist of two variable-length arrays:
915 * SVGA3dVertexDecl elements declare a set of vertex buffers to
916 * use while rendering, and SVGA3dPrimitiveRange elements specify
917 * groups of primitives each with an optional index buffer.
919 * The decls and ranges arrays are initialized to zero.
925 * May write to attached render target surfaces.
927 *----------------------------------------------------------------------
931 SVGA3D_BeginDrawPrimitives(struct svga_winsys_context *swc,
932 SVGA3dVertexDecl **decls, // OUT
933 uint32 numVertexDecls, // IN
934 SVGA3dPrimitiveRange **ranges, // OUT
935 uint32 numRanges) // IN
937 SVGA3dCmdDrawPrimitives *cmd;
938 SVGA3dVertexDecl *declArray;
939 SVGA3dPrimitiveRange *rangeArray;
940 uint32 declSize = sizeof **decls * numVertexDecls;
941 uint32 rangeSize = sizeof **ranges * numRanges;
943 cmd = SVGA3D_FIFOReserve(swc,
944 SVGA_3D_CMD_DRAW_PRIMITIVES,
945 sizeof *cmd + declSize + rangeSize,
946 numVertexDecls + numRanges);
948 return PIPE_ERROR_OUT_OF_MEMORY;
951 cmd->numVertexDecls = numVertexDecls;
952 cmd->numRanges = numRanges;
954 declArray = (SVGA3dVertexDecl*) &cmd[1];
955 rangeArray = (SVGA3dPrimitiveRange*) &declArray[numVertexDecls];
957 memset(declArray, 0, declSize);
958 memset(rangeArray, 0, rangeSize);
961 *ranges = rangeArray;
968 *----------------------------------------------------------------------
970 * SVGA3D_BeginSurfaceCopy --
972 * Begin a SURFACE_COPY command. This reserves space for it in
973 * the FIFO, and returns a pointer to the command's arrays. This
974 * function must be paired with SVGA_FIFOCommitAll().
976 * The box array is initialized with zeroes.
982 * Asynchronously copies a list of boxes from surface to surface.
984 *----------------------------------------------------------------------
988 SVGA3D_BeginSurfaceCopy(struct svga_winsys_context *swc,
989 struct pipe_surface *src, // IN
990 struct pipe_surface *dest, // IN
991 SVGA3dCopyBox **boxes, // OUT
992 uint32 numBoxes) // IN
994 SVGA3dCmdSurfaceCopy *cmd;
995 uint32 boxesSize = sizeof **boxes * numBoxes;
997 cmd = SVGA3D_FIFOReserve(swc,
998 SVGA_3D_CMD_SURFACE_COPY, sizeof *cmd + boxesSize,
1001 return PIPE_ERROR_OUT_OF_MEMORY;
1003 surface_to_surfaceid(swc, src, &cmd->src, PIPE_BUFFER_USAGE_GPU_READ);
1004 surface_to_surfaceid(swc, dest, &cmd->dest, PIPE_BUFFER_USAGE_GPU_WRITE);
1005 *boxes = (SVGA3dCopyBox*) &cmd[1];
1007 memset(*boxes, 0, boxesSize);
1014 *----------------------------------------------------------------------
1016 * SVGA3D_SurfaceStretchBlt --
1018 * Issue a SURFACE_STRETCHBLT command: an asynchronous
1019 * surface-to-surface blit, with scaling.
1025 * Asynchronously copies one box from surface to surface.
1027 *----------------------------------------------------------------------
1031 SVGA3D_SurfaceStretchBlt(struct svga_winsys_context *swc,
1032 struct pipe_surface *src, // IN
1033 struct pipe_surface *dest, // IN
1034 SVGA3dBox *boxSrc, // IN
1035 SVGA3dBox *boxDest, // IN
1036 SVGA3dStretchBltMode mode) // IN
1038 SVGA3dCmdSurfaceStretchBlt *cmd;
1040 cmd = SVGA3D_FIFOReserve(swc,
1041 SVGA_3D_CMD_SURFACE_STRETCHBLT, sizeof *cmd,
1044 return PIPE_ERROR_OUT_OF_MEMORY;
1046 surface_to_surfaceid(swc, src, &cmd->src, PIPE_BUFFER_USAGE_GPU_READ);
1047 surface_to_surfaceid(swc, dest, &cmd->dest, PIPE_BUFFER_USAGE_GPU_WRITE);
1048 cmd->boxSrc = *boxSrc;
1049 cmd->boxDest = *boxDest;
1058 *----------------------------------------------------------------------
1060 * SVGA3D_SetViewport --
1062 * Set the current context's viewport rectangle. The viewport
1063 * is clipped to the dimensions of the current render target,
1064 * then all rendering is clipped to the viewport.
1072 *----------------------------------------------------------------------
1076 SVGA3D_SetViewport(struct svga_winsys_context *swc,
1077 SVGA3dRect *rect) // IN
1079 SVGA3dCmdSetViewport *cmd;
1081 cmd = SVGA3D_FIFOReserve(swc,
1082 SVGA_3D_CMD_SETVIEWPORT, sizeof *cmd,
1085 return PIPE_ERROR_OUT_OF_MEMORY;
1087 cmd->cid = swc->cid;
1098 *----------------------------------------------------------------------
1100 * SVGA3D_SetScissorRect --
1102 * Set the current context's scissor rectangle. If scissor
1103 * is enabled then all rendering is clipped to the scissor.
1111 *----------------------------------------------------------------------
1115 SVGA3D_SetScissorRect(struct svga_winsys_context *swc,
1116 SVGA3dRect *rect) // IN
1118 SVGA3dCmdSetScissorRect *cmd;
1120 cmd = SVGA3D_FIFOReserve(swc,
1121 SVGA_3D_CMD_SETSCISSORRECT, sizeof *cmd,
1124 return PIPE_ERROR_OUT_OF_MEMORY;
1126 cmd->cid = swc->cid;
1134 *----------------------------------------------------------------------
1136 * SVGA3D_SetClipPlane --
1138 * Set one of the current context's clip planes. If the clip
1139 * plane is enabled then all 3d rendering is clipped to against
1148 *----------------------------------------------------------------------
1151 enum pipe_error SVGA3D_SetClipPlane(struct svga_winsys_context *swc,
1152 uint32 index, const float *plane)
1154 SVGA3dCmdSetClipPlane *cmd;
1156 cmd = SVGA3D_FIFOReserve(swc,
1157 SVGA_3D_CMD_SETCLIPPLANE, sizeof *cmd,
1160 return PIPE_ERROR_OUT_OF_MEMORY;
1162 cmd->cid = swc->cid;
1164 cmd->plane[0] = plane[0];
1165 cmd->plane[1] = plane[1];
1166 cmd->plane[2] = plane[2];
1167 cmd->plane[3] = plane[3];
1174 *----------------------------------------------------------------------
1176 * SVGA3D_SetZRange --
1178 * Set the range of the depth buffer to use. 'min' and 'max'
1179 * are values between 0.0 and 1.0.
1187 *----------------------------------------------------------------------
1191 SVGA3D_SetZRange(struct svga_winsys_context *swc,
1195 SVGA3dCmdSetZRange *cmd;
1197 cmd = SVGA3D_FIFOReserve(swc,
1198 SVGA_3D_CMD_SETZRANGE, sizeof *cmd,
1201 return PIPE_ERROR_OUT_OF_MEMORY;
1203 cmd->cid = swc->cid;
1204 cmd->zRange.min = zMin;
1205 cmd->zRange.max = zMax;
1213 *----------------------------------------------------------------------
1215 * SVGA3D_BeginSetTextureState --
1217 * Begin a SETTEXTURESTATE command. This reserves space for it in
1218 * the FIFO, and returns a pointer to the command's texture state
1219 * array. This function must be paired with SVGA_FIFOCommitAll().
1221 * This command sets rendering state which is per-texture-unit.
1223 * XXX: Individual texture states need documentation. However,
1224 * they are very similar to the texture states defined by
1225 * Direct3D. The D3D documentation is a good starting point
1226 * for understanding SVGA3D texture states.
1234 *----------------------------------------------------------------------
1238 SVGA3D_BeginSetTextureState(struct svga_winsys_context *swc,
1239 SVGA3dTextureState **states, // OUT
1240 uint32 numStates) // IN
1242 SVGA3dCmdSetTextureState *cmd;
1244 cmd = SVGA3D_FIFOReserve(swc,
1245 SVGA_3D_CMD_SETTEXTURESTATE,
1246 sizeof *cmd + sizeof **states * numStates,
1249 return PIPE_ERROR_OUT_OF_MEMORY;
1251 cmd->cid = swc->cid;
1252 *states = (SVGA3dTextureState*) &cmd[1];
1259 *----------------------------------------------------------------------
1261 * SVGA3D_BeginSetRenderState --
1263 * Begin a SETRENDERSTATE command. This reserves space for it in
1264 * the FIFO, and returns a pointer to the command's texture state
1265 * array. This function must be paired with SVGA_FIFOCommitAll().
1267 * This command sets rendering state which is global to the context.
1269 * XXX: Individual render states need documentation. However,
1270 * they are very similar to the render states defined by
1271 * Direct3D. The D3D documentation is a good starting point
1272 * for understanding SVGA3D render states.
1280 *----------------------------------------------------------------------
1284 SVGA3D_BeginSetRenderState(struct svga_winsys_context *swc,
1285 SVGA3dRenderState **states, // OUT
1286 uint32 numStates) // IN
1288 SVGA3dCmdSetRenderState *cmd;
1290 cmd = SVGA3D_FIFOReserve(swc,
1291 SVGA_3D_CMD_SETRENDERSTATE,
1292 sizeof *cmd + sizeof **states * numStates,
1295 return PIPE_ERROR_OUT_OF_MEMORY;
1297 cmd->cid = swc->cid;
1298 *states = (SVGA3dRenderState*) &cmd[1];
1305 *----------------------------------------------------------------------
1307 * SVGA3D_BeginQuery--
1309 * Issues a SVGA_3D_CMD_BEGIN_QUERY command.
1315 * Commits space in the FIFO memory.
1317 *----------------------------------------------------------------------
1321 SVGA3D_BeginQuery(struct svga_winsys_context *swc,
1322 SVGA3dQueryType type) // IN
1324 SVGA3dCmdBeginQuery *cmd;
1326 cmd = SVGA3D_FIFOReserve(swc,
1327 SVGA_3D_CMD_BEGIN_QUERY,
1331 return PIPE_ERROR_OUT_OF_MEMORY;
1333 cmd->cid = swc->cid;
1343 *----------------------------------------------------------------------
1347 * Issues a SVGA_3D_CMD_END_QUERY command.
1353 * Commits space in the FIFO memory.
1355 *----------------------------------------------------------------------
1359 SVGA3D_EndQuery(struct svga_winsys_context *swc,
1360 SVGA3dQueryType type, // IN
1361 struct svga_winsys_buffer *buffer) // IN/OUT
1363 SVGA3dCmdEndQuery *cmd;
1365 cmd = SVGA3D_FIFOReserve(swc,
1366 SVGA_3D_CMD_END_QUERY,
1370 return PIPE_ERROR_OUT_OF_MEMORY;
1372 cmd->cid = swc->cid;
1375 swc->region_relocation(swc, &cmd->guestResult, buffer, 0,
1376 PIPE_BUFFER_USAGE_GPU_WRITE);
1385 *----------------------------------------------------------------------
1387 * SVGA3D_WaitForQuery--
1389 * Issues a SVGA_3D_CMD_WAIT_FOR_QUERY command. This reserves space
1390 * for it in the FIFO. This doesn't actually wait for the query to
1391 * finish but instead tells the host to start a wait at the driver
1392 * level. The caller can wait on the status variable in the
1393 * guestPtr memory or send an insert fence instruction after this
1394 * command and wait on the fence.
1400 * Commits space in the FIFO memory.
1402 *----------------------------------------------------------------------
1406 SVGA3D_WaitForQuery(struct svga_winsys_context *swc,
1407 SVGA3dQueryType type, // IN
1408 struct svga_winsys_buffer *buffer) // IN/OUT
1410 SVGA3dCmdWaitForQuery *cmd;
1412 cmd = SVGA3D_FIFOReserve(swc,
1413 SVGA_3D_CMD_WAIT_FOR_QUERY,
1417 return PIPE_ERROR_OUT_OF_MEMORY;
1419 cmd->cid = swc->cid;
1422 swc->region_relocation(swc, &cmd->guestResult, buffer, 0,
1423 PIPE_BUFFER_USAGE_GPU_WRITE);