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svga: check for no-ops in svga_bind_sampler_states() 

and svga_set_sampler_views().  If there's no change, return early
and don't set a SVGA_NEW_x dirty state flag.

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
This commit is contained in:
Brian Paul 2016-01-05 13:03:04 -07:00
parent 6531ccb705
commit b11bd20889
1 changed files with 15 additions and 1 deletions
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16
src/gallium/drivers/svga/svga_pipe_sampler.c
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@ -287,6 +287,7 @@ svga_bind_sampler_states(struct pipe_context *pipe,
{
struct svga_context *svga = svga_context(pipe);
unsigned i;
boolean any_change = FALSE;
assert(shader < PIPE_SHADER_TYPES);
assert(start + num <= PIPE_MAX_SAMPLERS);
@ -295,8 +296,15 @@ svga_bind_sampler_states(struct pipe_context *pipe,
if (!svga_have_vgpu10(svga) && shader != PIPE_SHADER_FRAGMENT)
return;
for (i = 0; i < num; i++)
for (i = 0; i < num; i++) {
if (svga->curr.sampler[shader][start + i] != samplers[i])
any_change = TRUE;
svga->curr.sampler[shader][start + i] = samplers[i];
}
if (!any_change) {
return;
}
/* find highest non-null sampler[] entry */
{
@ -405,6 +413,7 @@ svga_set_sampler_views(struct pipe_context *pipe,
unsigned flag_1d = 0;
unsigned flag_srgb = 0;
uint i;
boolean any_change = FALSE;
assert(shader < PIPE_SHADER_TYPES);
assert(start + num <= Elements(svga->curr.sampler_views[shader]));
@ -422,6 +431,7 @@ svga_set_sampler_views(struct pipe_context *pipe,
pipe_sampler_view_release(pipe, &svga->curr.sampler_views[shader][start + i]);
pipe_sampler_view_reference(&svga->curr.sampler_views[shader][start + i],
views[i]);
any_change = TRUE;
}
if (!views[i])
@ -434,6 +444,10 @@ svga_set_sampler_views(struct pipe_context *pipe,
flag_1d |= 1 << (start + i);
}
if (!any_change) {
return;
}
/* find highest non-null sampler_views[] entry */
{
unsigned j = MAX2(svga->curr.num_sampler_views[shader], start + num);