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anv: Drop alpha_to_coverage from the NULL FS optimization 

Starting with Ivy Bridge, we implement alpha-to-coverage by writting
gl_SampleMask with a pattern based on alpha.  This will show up in
wm_prog_data::uses_omask so we don't need to look at the key.

Fixes: 36ee2fd61c ("anv: Implement the basic form of VK_EXT_transform_feedback")
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16506>
This commit is contained in:
Jason Ekstrand 2022-05-13 17:01:06 -05:00 committed by Marge Bot
parent 1b9248e761
commit 9fe6caf4e7
1 changed files with 0 additions and 1 deletions
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src/intel/vulkan/anv_pipeline.c
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@ -1216,7 +1216,6 @@ anv_pipeline_compile_fs(const struct brw_compiler *compiler,
if (fs_stage->key.wm.color_outputs_valid == 0 &&
!fs_stage->prog_data.wm.has_side_effects &&
!fs_stage->prog_data.wm.uses_omask &&
!fs_stage->key.wm.alpha_to_coverage &&
!fs_stage->prog_data.wm.uses_kill &&
fs_stage->prog_data.wm.computed_depth_mode == BRW_PSCDEPTH_OFF &&
!fs_stage->prog_data.wm.computed_stencil) {