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-rw-r--r--src/gallium/drivers/svga/svga_cmd.c1427
1 files changed, 1427 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_cmd.c b/src/gallium/drivers/svga/svga_cmd.c
new file mode 100644
index 00000000000..a0da7d7e5d5
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_cmd.c
@@ -0,0 +1,1427 @@
+/**********************************************************
+ * Copyright 2008-2009 VMware, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **********************************************************/
+
+/**
+ * svga_cmd.c --
+ *
+ * Command construction utility for the SVGA3D protocol used by
+ * the VMware SVGA device, based on the svgautil library.
+ */
+
+#include "svga_winsys.h"
+#include "svga_screen_buffer.h"
+#include "svga_screen_texture.h"
+#include "svga_cmd.h"
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * surface_to_surfaceid --
+ *
+ * Utility function for surface ids.
+ * Can handle null surface. Does a surface_reallocation so you need
+ * to have allocated the fifo space before converting.
+ *
+ * Results:
+ * id is filld out.
+ *
+ * Side effects:
+ * One surface relocation is preformed for texture handle.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static INLINE
+void surface_to_surfaceid(struct svga_winsys_context *swc, // IN
+ struct pipe_surface *surface, // IN
+ SVGA3dSurfaceImageId *id, // OUT
+ unsigned flags) // IN
+{
+ if(surface) {
+ struct svga_surface *s = svga_surface(surface);
+ swc->surface_relocation(swc, &id->sid, s->handle, flags);
+ id->face = s->real_face; /* faces have the same order */
+ id->mipmap = s->real_level;
+ }
+ else {
+ id->sid = SVGA3D_INVALID_ID;
+ id->face = 0;
+ id->mipmap = 0;
+ }
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_FIFOReserve --
+ *
+ * Reserve space for an SVGA3D FIFO command.
+ *
+ * The 2D SVGA commands have been around for a while, so they
+ * have a rather asymmetric structure. The SVGA3D protocol is
+ * more uniform: each command begins with a header containing the
+ * command number and the full size.
+ *
+ * This is a convenience wrapper around SVGA_FIFOReserve. We
+ * reserve space for the whole command, and write the header.
+ *
+ * This function must be paired with SVGA_FIFOCommitAll().
+ *
+ * Results:
+ * Returns a pointer to the space reserved for command-specific
+ * data. It must be 'cmdSize' bytes long.
+ *
+ * Side effects:
+ * Begins a FIFO reservation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void *
+SVGA3D_FIFOReserve(struct svga_winsys_context *swc,
+ uint32 cmd, // IN
+ uint32 cmdSize, // IN
+ uint32 nr_relocs) // IN
+{
+ SVGA3dCmdHeader *header;
+
+ header = swc->reserve(swc, sizeof *header + cmdSize, nr_relocs);
+ if(!header)
+ return NULL;
+
+ header->id = cmd;
+ header->size = cmdSize;
+
+ return &header[1];
+}
+
+
+void
+SVGA_FIFOCommitAll(struct svga_winsys_context *swc)
+{
+ swc->commit(swc);
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_DefineContext --
+ *
+ * Create a new context, to be referred to with the provided ID.
+ *
+ * Context objects encapsulate all render state, and shader
+ * objects are per-context.
+ *
+ * Surfaces are not per-context. The same surface can be shared
+ * between multiple contexts, and surface operations can occur
+ * without a context.
+ *
+ * If the provided context ID already existed, it is redefined.
+ *
+ * Context IDs are arbitrary small non-negative integers,
+ * global to the entire SVGA device.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_DefineContext(struct svga_winsys_context *swc) // IN
+{
+ SVGA3dCmdDefineContext *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_CONTEXT_DEFINE, sizeof *cmd, 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_DestroyContext --
+ *
+ * Delete a context created with SVGA3D_DefineContext.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_DestroyContext(struct svga_winsys_context *swc) // IN
+{
+ SVGA3dCmdDestroyContext *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_CONTEXT_DESTROY, sizeof *cmd, 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginDefineSurface --
+ *
+ * Begin a SURFACE_DEFINE command. This reserves space for it in
+ * the FIFO, and returns pointers to the command's faces and
+ * mipsizes arrays.
+ *
+ * This function must be paired with SVGA_FIFOCommitAll().
+ * The faces and mipSizes arrays are initialized to zero.
+ *
+ * This creates a "surface" object in the SVGA3D device,
+ * with the provided surface ID (sid). Surfaces are generic
+ * containers for host VRAM objects like textures, vertex
+ * buffers, and depth/stencil buffers.
+ *
+ * Surfaces are hierarchial:
+ *
+ * - Surface may have multiple faces (for cube maps)
+ *
+ * - Each face has a list of mipmap levels
+ *
+ * - Each mipmap image may have multiple volume
+ * slices, if the image is three dimensional.
+ *
+ * - Each slice is a 2D array of 'blocks'
+ *
+ * - Each block may be one or more pixels.
+ * (Usually 1, more for DXT or YUV formats.)
+ *
+ * Surfaces are generic host VRAM objects. The SVGA3D device
+ * may optimize surfaces according to the format they were
+ * created with, but this format does not limit the ways in
+ * which the surface may be used. For example, a depth surface
+ * can be used as a texture, or a floating point image may
+ * be used as a vertex buffer. Some surface usages may be
+ * lower performance, due to software emulation, but any
+ * usage should work with any surface.
+ *
+ * If 'sid' is already defined, the old surface is deleted
+ * and this new surface replaces it.
+ *
+ * Surface IDs are arbitrary small non-negative integers,
+ * global to the entire SVGA device.
+ *
+ * Results:
+ * Returns pointers to arrays allocated in the FIFO for 'faces'
+ * and 'mipSizes'.
+ *
+ * Side effects:
+ * Begins a FIFO reservation.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_BeginDefineSurface(struct svga_winsys_context *swc,
+ struct svga_winsys_surface *sid, // IN
+ SVGA3dSurfaceFlags flags, // IN
+ SVGA3dSurfaceFormat format, // IN
+ SVGA3dSurfaceFace **faces, // OUT
+ SVGA3dSize **mipSizes, // OUT
+ uint32 numMipSizes) // IN
+{
+ SVGA3dCmdDefineSurface *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SURFACE_DEFINE, sizeof *cmd +
+ sizeof **mipSizes * numMipSizes, 1);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ swc->surface_relocation(swc, &cmd->sid, sid, PIPE_BUFFER_USAGE_GPU_WRITE);
+ cmd->surfaceFlags = flags;
+ cmd->format = format;
+
+ *faces = &cmd->face[0];
+ *mipSizes = (SVGA3dSize*) &cmd[1];
+
+ memset(*faces, 0, sizeof **faces * SVGA3D_MAX_SURFACE_FACES);
+ memset(*mipSizes, 0, sizeof **mipSizes * numMipSizes);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_DefineSurface2D --
+ *
+ * This is a simplified version of SVGA3D_BeginDefineSurface(),
+ * which does not support cube maps, mipmaps, or volume textures.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_DefineSurface2D(struct svga_winsys_context *swc, // IN
+ struct svga_winsys_surface *sid, // IN
+ uint32 width, // IN
+ uint32 height, // IN
+ SVGA3dSurfaceFormat format) // IN
+{
+ SVGA3dSize *mipSizes;
+ SVGA3dSurfaceFace *faces;
+ enum pipe_error ret;
+
+ ret = SVGA3D_BeginDefineSurface(swc,
+ sid, 0, format, &faces, &mipSizes, 1);
+ if(ret != PIPE_OK)
+ return ret;
+
+ faces[0].numMipLevels = 1;
+
+ mipSizes[0].width = width;
+ mipSizes[0].height = height;
+ mipSizes[0].depth = 1;
+
+ swc->commit(swc);;
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_DestroySurface --
+ *
+ * Release the host VRAM encapsulated by a particular surface ID.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_DestroySurface(struct svga_winsys_context *swc,
+ struct svga_winsys_surface *sid) // IN
+{
+ SVGA3dCmdDestroySurface *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SURFACE_DESTROY, sizeof *cmd, 1);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ swc->surface_relocation(swc, &cmd->sid, sid, PIPE_BUFFER_USAGE_GPU_READ);
+ swc->commit(swc);;
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginSurfaceDMA--
+ *
+ * Begin a SURFACE_DMA command. This reserves space for it in
+ * the FIFO, and returns a pointer to the command's box array.
+ * This function must be paired with SVGA_FIFOCommitAll().
+ *
+ * When the SVGA3D device asynchronously processes this FIFO
+ * command, a DMA operation is performed between host VRAM and
+ * a generic SVGAGuestPtr. The guest pointer may refer to guest
+ * VRAM (provided by the SVGA PCI device) or to guest system
+ * memory that has been set up as a Guest Memory Region (GMR)
+ * by the SVGA device.
+ *
+ * The guest's DMA buffer must remain valid (not freed, paged out,
+ * or overwritten) until the host has finished processing this
+ * command. The guest can determine that the host has finished
+ * by using the SVGA device's FIFO Fence mechanism.
+ *
+ * The guest's image buffer can be an arbitrary size and shape.
+ * Guest image data is interpreted according to the SVGA3D surface
+ * format specified when the surface was defined.
+ *
+ * The caller may optionally define the guest image's pitch.
+ * guestImage->pitch can either be zero (assume image is tightly
+ * packed) or it must be the number of bytes between vertically
+ * adjacent image blocks.
+ *
+ * The provided copybox list specifies which regions of the source
+ * image are to be copied, and where they appear on the destination.
+ *
+ * NOTE: srcx/srcy are always on the guest image and x/y are
+ * always on the host image, regardless of the actual transfer
+ * direction!
+ *
+ * For efficiency, the SVGA3D device is free to copy more data
+ * than specified. For example, it may round copy boxes outwards
+ * such that they lie on particular alignment boundaries.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SurfaceDMA(struct svga_winsys_context *swc,
+ struct svga_transfer *st, // IN
+ SVGA3dTransferType transfer, // IN
+ const SVGA3dCopyBox *boxes, // IN
+ uint32 numBoxes) // IN
+{
+ struct svga_texture *texture = svga_texture(st->base.texture);
+ SVGA3dCmdSurfaceDMA *cmd;
+ SVGA3dCmdSurfaceDMASuffix *pSuffix;
+ uint32 boxesSize = sizeof *boxes * numBoxes;
+ unsigned region_flags;
+ unsigned surface_flags;
+
+ if(transfer == SVGA3D_WRITE_HOST_VRAM) {
+ region_flags = PIPE_BUFFER_USAGE_GPU_READ;
+ surface_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
+ }
+ else if(transfer == SVGA3D_READ_HOST_VRAM) {
+ region_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
+ surface_flags = PIPE_BUFFER_USAGE_GPU_READ;
+ }
+ else {
+ assert(0);
+ return PIPE_ERROR_BAD_INPUT;
+ }
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SURFACE_DMA,
+ sizeof *cmd + boxesSize + sizeof *pSuffix,
+ 2);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ swc->region_relocation(swc, &cmd->guest.ptr, st->hwbuf, 0, region_flags);
+ cmd->guest.pitch = st->base.stride;
+
+ swc->surface_relocation(swc, &cmd->host.sid, texture->handle, surface_flags);
+ cmd->host.face = st->base.face; /* PIPE_TEX_FACE_* and SVGA3D_CUBEFACE_* match */
+ cmd->host.mipmap = st->base.level;
+
+ cmd->transfer = transfer;
+
+ memcpy(&cmd[1], boxes, boxesSize);
+
+ pSuffix = (SVGA3dCmdSurfaceDMASuffix *)((uint8_t*)cmd + sizeof *cmd + boxesSize);
+ pSuffix->suffixSize = sizeof *pSuffix;
+ pSuffix->maximumOffset = st->hw_nblocksy*st->base.stride;
+ memset(&pSuffix->flags, 0, sizeof pSuffix->flags);
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+enum pipe_error
+SVGA3D_BufferDMA(struct svga_winsys_context *swc,
+ struct svga_winsys_buffer *guest,
+ struct svga_winsys_surface *host,
+ SVGA3dTransferType transfer, // IN
+ uint32 size, // IN
+ uint32 offset, // IN
+ SVGA3dSurfaceDMAFlags flags) // IN
+{
+ SVGA3dCmdSurfaceDMA *cmd;
+ SVGA3dCopyBox *box;
+ SVGA3dCmdSurfaceDMASuffix *pSuffix;
+ unsigned region_flags;
+ unsigned surface_flags;
+
+ if(transfer == SVGA3D_WRITE_HOST_VRAM) {
+ region_flags = PIPE_BUFFER_USAGE_GPU_READ;
+ surface_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
+ }
+ else if(transfer == SVGA3D_READ_HOST_VRAM) {
+ region_flags = PIPE_BUFFER_USAGE_GPU_WRITE;
+ surface_flags = PIPE_BUFFER_USAGE_GPU_READ;
+ }
+ else {
+ assert(0);
+ return PIPE_ERROR_BAD_INPUT;
+ }
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SURFACE_DMA,
+ sizeof *cmd + sizeof *box + sizeof *pSuffix,
+ 2);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ swc->region_relocation(swc, &cmd->guest.ptr, guest, 0, region_flags);
+ cmd->guest.pitch = 0;
+
+ swc->surface_relocation(swc, &cmd->host.sid, host, surface_flags);
+ cmd->host.face = 0;
+ cmd->host.mipmap = 0;
+
+ cmd->transfer = transfer;
+
+ box = (SVGA3dCopyBox *)&cmd[1];
+ box->x = offset;
+ box->y = 0;
+ box->z = 0;
+ box->w = size;
+ box->h = 1;
+ box->d = 1;
+ box->srcx = offset;
+ box->srcy = 0;
+ box->srcz = 0;
+
+ pSuffix = (SVGA3dCmdSurfaceDMASuffix *)((uint8_t*)cmd + sizeof *cmd + sizeof *box);
+ pSuffix->suffixSize = sizeof *pSuffix;
+ pSuffix->maximumOffset = offset + size;
+ pSuffix->flags = flags;
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SetRenderTarget --
+ *
+ * Bind a surface object to a particular render target attachment
+ * point on the current context. Render target attachment points
+ * exist for color buffers, a depth buffer, and a stencil buffer.
+ *
+ * The SVGA3D device is quite lenient about the types of surfaces
+ * that may be used as render targets. The color buffers must
+ * all be the same size, but the depth and stencil buffers do not
+ * have to be the same size as the color buffer. All attachments
+ * are optional.
+ *
+ * Some combinations of render target formats may require software
+ * emulation, depending on the capabilities of the host graphics
+ * API and graphics hardware.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SetRenderTarget(struct svga_winsys_context *swc,
+ SVGA3dRenderTargetType type, // IN
+ struct pipe_surface *surface) // IN
+{
+ SVGA3dCmdSetRenderTarget *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SETRENDERTARGET, sizeof *cmd, 1);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+
+ cmd->cid = swc->cid;
+
+ cmd->type = type;
+
+ surface_to_surfaceid(swc, surface, &cmd->target, PIPE_BUFFER_USAGE_GPU_WRITE);
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+
+
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_DefineShader --
+ *
+ * Upload the bytecode for a new shader. The bytecode is "SVGA3D
+ * format", which is theoretically a binary-compatible superset
+ * of Microsoft's DirectX shader bytecode. In practice, the
+ * SVGA3D bytecode doesn't yet have any extensions to DirectX's
+ * bytecode format.
+ *
+ * The SVGA3D device supports shader models 1.1 through 2.0.
+ *
+ * The caller chooses a shader ID (small positive integer) by
+ * which this shader will be identified in future commands. This
+ * ID is in a namespace which is per-context and per-shader-type.
+ *
+ * 'bytecodeLen' is specified in bytes. It must be a multiple of 4.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_DefineShader(struct svga_winsys_context *swc,
+ uint32 shid, // IN
+ SVGA3dShaderType type, // IN
+ const uint32 *bytecode, // IN
+ uint32 bytecodeLen) // IN
+{
+ SVGA3dCmdDefineShader *cmd;
+
+ assert(bytecodeLen % 4 == 0);
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SHADER_DEFINE, sizeof *cmd + bytecodeLen,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->shid = shid;
+ cmd->type = type;
+ memcpy(&cmd[1], bytecode, bytecodeLen);
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_DestroyShader --
+ *
+ * Delete a shader that was created by SVGA3D_DefineShader. If
+ * the shader was the current vertex or pixel shader for its
+ * context, rendering results are undefined until a new shader is
+ * bound.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_DestroyShader(struct svga_winsys_context *swc,
+ uint32 shid, // IN
+ SVGA3dShaderType type) // IN
+{
+ SVGA3dCmdDestroyShader *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SHADER_DESTROY, sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->shid = shid;
+ cmd->type = type;
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SetShaderConst --
+ *
+ * Set the value of a shader constant.
+ *
+ * Shader constants are analogous to uniform variables in GLSL,
+ * except that they belong to the render context rather than to
+ * an individual shader.
+ *
+ * Constants may have one of three types: A 4-vector of floats,
+ * a 4-vector of integers, or a single boolean flag.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SetShaderConst(struct svga_winsys_context *swc,
+ uint32 reg, // IN
+ SVGA3dShaderType type, // IN
+ SVGA3dShaderConstType ctype, // IN
+ const void *value) // IN
+{
+ SVGA3dCmdSetShaderConst *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SET_SHADER_CONST, sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->reg = reg;
+ cmd->type = type;
+ cmd->ctype = ctype;
+
+ switch (ctype) {
+
+ case SVGA3D_CONST_TYPE_FLOAT:
+ case SVGA3D_CONST_TYPE_INT:
+ memcpy(&cmd->values, value, sizeof cmd->values);
+ break;
+
+ case SVGA3D_CONST_TYPE_BOOL:
+ memset(&cmd->values, 0, sizeof cmd->values);
+ cmd->values[0] = *(uint32*)value;
+ break;
+
+ default:
+ assert(0);
+ break;
+
+ }
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SetShader --
+ *
+ * Switch active shaders. This binds a new vertex or pixel shader
+ * to the specified context.
+ *
+ * A shader ID of SVGA3D_INVALID_ID unbinds any shader, switching
+ * back to the fixed function vertex or pixel pipeline.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SetShader(struct svga_winsys_context *swc,
+ SVGA3dShaderType type, // IN
+ uint32 shid) // IN
+{
+ SVGA3dCmdSetShader *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SET_SHADER, sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->type = type;
+ cmd->shid = shid;
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginClear --
+ *
+ * Begin a CLEAR command. This reserves space for it in the FIFO,
+ * and returns a pointer to the command's rectangle array. This
+ * function must be paired with SVGA_FIFOCommitAll().
+ *
+ * Clear is a rendering operation which fills a list of
+ * rectangles with constant values on all render target types
+ * indicated by 'flags'.
+ *
+ * Clear is not affected by clipping, depth test, or other
+ * render state which affects the fragment pipeline.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * May write to attached render target surfaces.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_BeginClear(struct svga_winsys_context *swc,
+ SVGA3dClearFlag flags, // IN
+ uint32 color, // IN
+ float depth, // IN
+ uint32 stencil, // IN
+ SVGA3dRect **rects, // OUT
+ uint32 numRects) // IN
+{
+ SVGA3dCmdClear *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_CLEAR,
+ sizeof *cmd + sizeof **rects * numRects,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->clearFlag = flags;
+ cmd->color = color;
+ cmd->depth = depth;
+ cmd->stencil = stencil;
+ *rects = (SVGA3dRect*) &cmd[1];
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_ClearRect --
+ *
+ * This is a simplified version of SVGA3D_BeginClear().
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_ClearRect(struct svga_winsys_context *swc,
+ SVGA3dClearFlag flags, // IN
+ uint32 color, // IN
+ float depth, // IN
+ uint32 stencil, // IN
+ uint32 x, // IN
+ uint32 y, // IN
+ uint32 w, // IN
+ uint32 h) // IN
+{
+ SVGA3dRect *rect;
+ enum pipe_error ret;
+
+ ret = SVGA3D_BeginClear(swc, flags, color, depth, stencil, &rect, 1);
+ if(ret != PIPE_OK)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ memset(rect, 0, sizeof *rect);
+ rect->x = x;
+ rect->y = y;
+ rect->w = w;
+ rect->h = h;
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginDrawPrimitives --
+ *
+ * Begin a DRAW_PRIMITIVES command. This reserves space for it in
+ * the FIFO, and returns a pointer to the command's arrays.
+ * This function must be paired with SVGA_FIFOCommitAll().
+ *
+ * Drawing commands consist of two variable-length arrays:
+ * SVGA3dVertexDecl elements declare a set of vertex buffers to
+ * use while rendering, and SVGA3dPrimitiveRange elements specify
+ * groups of primitives each with an optional index buffer.
+ *
+ * The decls and ranges arrays are initialized to zero.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * May write to attached render target surfaces.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_BeginDrawPrimitives(struct svga_winsys_context *swc,
+ SVGA3dVertexDecl **decls, // OUT
+ uint32 numVertexDecls, // IN
+ SVGA3dPrimitiveRange **ranges, // OUT
+ uint32 numRanges) // IN
+{
+ SVGA3dCmdDrawPrimitives *cmd;
+ SVGA3dVertexDecl *declArray;
+ SVGA3dPrimitiveRange *rangeArray;
+ uint32 declSize = sizeof **decls * numVertexDecls;
+ uint32 rangeSize = sizeof **ranges * numRanges;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_DRAW_PRIMITIVES,
+ sizeof *cmd + declSize + rangeSize,
+ numVertexDecls + numRanges);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->numVertexDecls = numVertexDecls;
+ cmd->numRanges = numRanges;
+
+ declArray = (SVGA3dVertexDecl*) &cmd[1];
+ rangeArray = (SVGA3dPrimitiveRange*) &declArray[numVertexDecls];
+
+ memset(declArray, 0, declSize);
+ memset(rangeArray, 0, rangeSize);
+
+ *decls = declArray;
+ *ranges = rangeArray;
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginSurfaceCopy --
+ *
+ * Begin a SURFACE_COPY command. This reserves space for it in
+ * the FIFO, and returns a pointer to the command's arrays. This
+ * function must be paired with SVGA_FIFOCommitAll().
+ *
+ * The box array is initialized with zeroes.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Asynchronously copies a list of boxes from surface to surface.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_BeginSurfaceCopy(struct svga_winsys_context *swc,
+ struct pipe_surface *src, // IN
+ struct pipe_surface *dest, // IN
+ SVGA3dCopyBox **boxes, // OUT
+ uint32 numBoxes) // IN
+{
+ SVGA3dCmdSurfaceCopy *cmd;
+ uint32 boxesSize = sizeof **boxes * numBoxes;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SURFACE_COPY, sizeof *cmd + boxesSize,
+ 2);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ surface_to_surfaceid(swc, src, &cmd->src, PIPE_BUFFER_USAGE_GPU_READ);
+ surface_to_surfaceid(swc, dest, &cmd->dest, PIPE_BUFFER_USAGE_GPU_WRITE);
+ *boxes = (SVGA3dCopyBox*) &cmd[1];
+
+ memset(*boxes, 0, boxesSize);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SurfaceStretchBlt --
+ *
+ * Issue a SURFACE_STRETCHBLT command: an asynchronous
+ * surface-to-surface blit, with scaling.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Asynchronously copies one box from surface to surface.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SurfaceStretchBlt(struct svga_winsys_context *swc,
+ struct pipe_surface *src, // IN
+ struct pipe_surface *dest, // IN
+ SVGA3dBox *boxSrc, // IN
+ SVGA3dBox *boxDest, // IN
+ SVGA3dStretchBltMode mode) // IN
+{
+ SVGA3dCmdSurfaceStretchBlt *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SURFACE_STRETCHBLT, sizeof *cmd,
+ 2);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ surface_to_surfaceid(swc, src, &cmd->src, PIPE_BUFFER_USAGE_GPU_READ);
+ surface_to_surfaceid(swc, dest, &cmd->dest, PIPE_BUFFER_USAGE_GPU_WRITE);
+ cmd->boxSrc = *boxSrc;
+ cmd->boxDest = *boxDest;
+ cmd->mode = mode;
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SetViewport --
+ *
+ * Set the current context's viewport rectangle. The viewport
+ * is clipped to the dimensions of the current render target,
+ * then all rendering is clipped to the viewport.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SetViewport(struct svga_winsys_context *swc,
+ SVGA3dRect *rect) // IN
+{
+ SVGA3dCmdSetViewport *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SETVIEWPORT, sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->rect = *rect;
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SetScissorRect --
+ *
+ * Set the current context's scissor rectangle. If scissor
+ * is enabled then all rendering is clipped to the scissor.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SetScissorRect(struct svga_winsys_context *swc,
+ SVGA3dRect *rect) // IN
+{
+ SVGA3dCmdSetScissorRect *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SETSCISSORRECT, sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->rect = *rect;
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SetClipPlane --
+ *
+ * Set one of the current context's clip planes. If the clip
+ * plane is enabled then all 3d rendering is clipped to against
+ * the plane.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error SVGA3D_SetClipPlane(struct svga_winsys_context *swc,
+ uint32 index, const float *plane)
+{
+ SVGA3dCmdSetClipPlane *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SETCLIPPLANE, sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->index = index;
+ cmd->plane[0] = plane[0];
+ cmd->plane[1] = plane[1];
+ cmd->plane[2] = plane[2];
+ cmd->plane[3] = plane[3];
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_SetZRange --
+ *
+ * Set the range of the depth buffer to use. 'min' and 'max'
+ * are values between 0.0 and 1.0.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_SetZRange(struct svga_winsys_context *swc,
+ float zMin, // IN
+ float zMax) // IN
+{
+ SVGA3dCmdSetZRange *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SETZRANGE, sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->zRange.min = zMin;
+ cmd->zRange.max = zMax;
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginSetTextureState --
+ *
+ * Begin a SETTEXTURESTATE command. This reserves space for it in
+ * the FIFO, and returns a pointer to the command's texture state
+ * array. This function must be paired with SVGA_FIFOCommitAll().
+ *
+ * This command sets rendering state which is per-texture-unit.
+ *
+ * XXX: Individual texture states need documentation. However,
+ * they are very similar to the texture states defined by
+ * Direct3D. The D3D documentation is a good starting point
+ * for understanding SVGA3D texture states.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_BeginSetTextureState(struct svga_winsys_context *swc,
+ SVGA3dTextureState **states, // OUT
+ uint32 numStates) // IN
+{
+ SVGA3dCmdSetTextureState *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SETTEXTURESTATE,
+ sizeof *cmd + sizeof **states * numStates,
+ numStates);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ *states = (SVGA3dTextureState*) &cmd[1];
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginSetRenderState --
+ *
+ * Begin a SETRENDERSTATE command. This reserves space for it in
+ * the FIFO, and returns a pointer to the command's texture state
+ * array. This function must be paired with SVGA_FIFOCommitAll().
+ *
+ * This command sets rendering state which is global to the context.
+ *
+ * XXX: Individual render states need documentation. However,
+ * they are very similar to the render states defined by
+ * Direct3D. The D3D documentation is a good starting point
+ * for understanding SVGA3D render states.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_BeginSetRenderState(struct svga_winsys_context *swc,
+ SVGA3dRenderState **states, // OUT
+ uint32 numStates) // IN
+{
+ SVGA3dCmdSetRenderState *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_SETRENDERSTATE,
+ sizeof *cmd + sizeof **states * numStates,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ *states = (SVGA3dRenderState*) &cmd[1];
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_BeginQuery--
+ *
+ * Issues a SVGA_3D_CMD_BEGIN_QUERY command.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Commits space in the FIFO memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_BeginQuery(struct svga_winsys_context *swc,
+ SVGA3dQueryType type) // IN
+{
+ SVGA3dCmdBeginQuery *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_BEGIN_QUERY,
+ sizeof *cmd,
+ 0);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->type = type;
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_EndQuery--
+ *
+ * Issues a SVGA_3D_CMD_END_QUERY command.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Commits space in the FIFO memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_EndQuery(struct svga_winsys_context *swc,
+ SVGA3dQueryType type, // IN
+ struct svga_winsys_buffer *buffer) // IN/OUT
+{
+ SVGA3dCmdEndQuery *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_END_QUERY,
+ sizeof *cmd,
+ 1);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->type = type;
+
+ swc->region_relocation(swc, &cmd->guestResult, buffer, 0,
+ PIPE_BUFFER_USAGE_GPU_WRITE);
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * SVGA3D_WaitForQuery--
+ *
+ * Issues a SVGA_3D_CMD_WAIT_FOR_QUERY command. This reserves space
+ * for it in the FIFO. This doesn't actually wait for the query to
+ * finish but instead tells the host to start a wait at the driver
+ * level. The caller can wait on the status variable in the
+ * guestPtr memory or send an insert fence instruction after this
+ * command and wait on the fence.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Commits space in the FIFO memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+enum pipe_error
+SVGA3D_WaitForQuery(struct svga_winsys_context *swc,
+ SVGA3dQueryType type, // IN
+ struct svga_winsys_buffer *buffer) // IN/OUT
+{
+ SVGA3dCmdWaitForQuery *cmd;
+
+ cmd = SVGA3D_FIFOReserve(swc,
+ SVGA_3D_CMD_WAIT_FOR_QUERY,
+ sizeof *cmd,
+ 1);
+ if(!cmd)
+ return PIPE_ERROR_OUT_OF_MEMORY;
+
+ cmd->cid = swc->cid;
+ cmd->type = type;
+
+ swc->region_relocation(swc, &cmd->guestResult, buffer, 0,
+ PIPE_BUFFER_USAGE_GPU_WRITE);
+
+ swc->commit(swc);
+
+ return PIPE_OK;
+}