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anv: Restrict the number of color regions to those actually written

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The back-end compiler emits the number of color writes specified by
wm_prog_key::nr_color_regions regardless of what nir_store_outputs we
have.  Once we've gone through and figured out which render targets
actually exist and are written by the shader, we should restrict the key
to avoid extra RT write messages.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
This commit is contained in:
Jason Ekstrand 2018-06-27 18:30:09 -07:00
parent 4d57e543b8
commit 80bc0b728c
1 changed files with 5 additions and 0 deletions
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5
src/intel/vulkan/anv_pipeline.c
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@ -963,6 +963,11 @@ anv_pipeline_compile_fs(struct anv_pipeline *pipeline,
num_rts = 1;
}
/* Now that we've determined the actual number of render targets, adjust
* the key accordingly.
*/
key.nr_color_regions = num_rts;
assert(num_rts <= max_rt);
map.surface_to_descriptor -= num_rts;
map.surface_count += num_rts;