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svga: avoid emitting redundant SetSamplers() commands 

This greatly reduces the number of SetSamplers() commands for some
applications.

Reviewed-by: José Fonseca <jfonseca@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
This commit is contained in:
Brian Paul 2015-12-10 14:55:33 -07:00
parent 1291e910d5
commit 27d5be0b8f
2 changed files with 18 additions and 7 deletions
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3
src/gallium/drivers/svga/svga_context.h
View File

@ -347,6 +347,9 @@ struct svga_hw_draw_state
SVGA3dSurfaceFormat ib_format;
unsigned ib_offset;
unsigned num_samplers[PIPE_SHADER_TYPES];
SVGA3dSamplerId samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
/* used for rebinding */
unsigned num_sampler_views[PIPE_SHADER_TYPES];
unsigned default_constbuf_size[PIPE_SHADER_TYPES];

22
src/gallium/drivers/svga/svga_state_sampler.c
View File

@ -301,13 +301,21 @@ update_samplers(struct svga_context *svga, unsigned dirty )
}
if (count > 0) {
ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
count,
0, /* start */
svga_shader_type(shader), /* type */
ids);
if (ret != PIPE_OK)
return ret;
if (count != svga->state.hw_draw.num_samplers[shader] ||
memcmp(ids, svga->state.hw_draw.samplers[shader],
count * sizeof(ids[0])) != 0) {
/* HW state is really changing */
ret = SVGA3D_vgpu10_SetSamplers(svga->swc,
count,
0, /* start */
svga_shader_type(shader), /* type */
ids);
if (ret != PIPE_OK)
return ret;
memcpy(svga->state.hw_draw.samplers[shader], ids,
count * sizeof(ids[0]));
svga->state.hw_draw.num_samplers[shader] = count;
}
}
}