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svga: avoid emitting redundant SetVertexBuffers() commands

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Reviewed-by: Charmaine Lee <charmainel@vmware.com>
This commit is contained in:
Brian Paul 2016-01-05 13:03:04 -07:00
parent b11bd20889
commit 077aa3be93
2 changed files with 26 additions and 5 deletions
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5
src/gallium/drivers/svga/svga_context.h
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@ -345,6 +345,11 @@ struct svga_hw_draw_state
SVGA3dElementLayoutId layout_id;
SVGA3dPrimitiveType topology;
/** Vertex buffer state */
SVGA3dVertexBuffer vbuffers[PIPE_MAX_ATTRIBS];
struct svga_winsys_surface *vbuffer_handles[PIPE_MAX_ATTRIBS];
unsigned num_vbuffers;
struct svga_winsys_surface *ib; /**< index buffer for drawing */
SVGA3dSurfaceFormat ib_format;
unsigned ib_offset;

26
src/gallium/drivers/svga/svga_draw.c
View file

@ -517,11 +517,27 @@ draw_vgpu10(struct svga_hwtnl *hwtnl,
buffers[i].offset = hwtnl->cmd.vbufs[i].buffer_offset;
}
if (vbuf_count > 0) {
ret = SVGA3D_vgpu10_SetVertexBuffers(svga->swc, vbuf_count,
0, /* startBuffer */
buffers, vb_handle);
if (ret != PIPE_OK)
return ret;
/* If we haven't yet emitted a drawing command or if any
* vertex buffer state is changing, issue that state now.
*/
if (((hwtnl->cmd.swc->hints & SVGA_HINT_FLAG_DRAW_EMITTED) == 0) ||
vbuf_count != svga->state.hw_draw.num_vbuffers ||
memcmp(buffers, svga->state.hw_draw.vbuffers,
vbuf_count * sizeof(buffers[0])) ||
memcmp(vb_handle, svga->state.hw_draw.vbuffer_handles,
vbuf_count * sizeof(vb_handle[0]))) {
ret = SVGA3D_vgpu10_SetVertexBuffers(svga->swc, vbuf_count,
0, /* startBuffer */
buffers, vb_handle);
if (ret != PIPE_OK)
return ret;
svga->state.hw_draw.num_vbuffers = vbuf_count;
memcpy(svga->state.hw_draw.vbuffers, buffers,
vbuf_count * sizeof(buffers[0]));
memcpy(svga->state.hw_draw.vbuffer_handles, vb_handle,
vbuf_count * sizeof(vb_handle[0]));
}
}
}