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>
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@ -287,6 +287,7 @@ svga_bind_sampler_states(struct pipe_context *pipe,
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{
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struct svga_context *svga = svga_context(pipe);
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unsigned i;
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boolean any_change = FALSE;
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assert(shader < PIPE_SHADER_TYPES);
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assert(start + num <= PIPE_MAX_SAMPLERS);
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@ -295,8 +296,15 @@ svga_bind_sampler_states(struct pipe_context *pipe,
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if (!svga_have_vgpu10(svga) && shader != PIPE_SHADER_FRAGMENT)
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return;
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for (i = 0; i < num; i++)
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for (i = 0; i < num; i++) {
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if (svga->curr.sampler[shader][start + i] != samplers[i])
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any_change = TRUE;
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svga->curr.sampler[shader][start + i] = samplers[i];
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}
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if (!any_change) {
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return;
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}
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/* find highest non-null sampler[] entry */
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{
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@ -405,6 +413,7 @@ svga_set_sampler_views(struct pipe_context *pipe,
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unsigned flag_1d = 0;
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unsigned flag_srgb = 0;
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uint i;
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boolean any_change = FALSE;
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assert(shader < PIPE_SHADER_TYPES);
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assert(start + num <= Elements(svga->curr.sampler_views[shader]));
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@ -422,6 +431,7 @@ svga_set_sampler_views(struct pipe_context *pipe,
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pipe_sampler_view_release(pipe, &svga->curr.sampler_views[shader][start + i]);
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pipe_sampler_view_reference(&svga->curr.sampler_views[shader][start + i],
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views[i]);
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any_change = TRUE;
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}
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if (!views[i])
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@ -434,6 +444,10 @@ svga_set_sampler_views(struct pipe_context *pipe,
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flag_1d |= 1 << (start + i);
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}
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if (!any_change) {
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return;
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}
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/* find highest non-null sampler_views[] entry */
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{
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unsigned j = MAX2(svga->curr.num_sampler_views[shader], start + num);
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