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hk: fix alpha-to-coverage with sample shading

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fixes sascha willem's deferredmultisampling.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31908>
This commit is contained in:
Alyssa Rosenzweig 2024-10-26 23:01:07 -04:00
parent d0b3b4c309
commit 9bbe93d158
1 changed files with 7 additions and 0 deletions
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7
src/asahi/lib/agx_nir_prolog_epilog.c
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@ -451,6 +451,13 @@ agx_nir_fs_epilog(nir_builder *b, const void *key_)
NIR_PASS(_, b->shader, agx_nir_lower_to_per_sample);
NIR_PASS(_, b->shader, agx_nir_lower_fs_active_samples_to_register);
/* Lower the resulting discards. Done in agx_nir_lower_monolithic_msaa for
* the pixel shaded path.
*/
if (key->blend.alpha_to_coverage) {
NIR_PASS(_, b->shader, agx_nir_lower_sample_mask);
}
/* Ensure the sample ID is preserved in register. We do this late since it
* has to go in the last block, and the above passes might add control
* flow when lowering.