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gpu: honour DB_ALPHA_TO_MASK as alpha-to-coverage and keep its depth writes behind the shader

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nmzik
2026-10-21 18:22:09 +02:00
parent 2944d126b3
commit 13b291f998
10 changed files with 19 additions and 18 deletions
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src/graphics/shader/shader.cpp
+2 -1
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@@ -355,10 +355,11 @@ static void ShaderGetStaticInputInfoPS(
ps_info.ps_pixel_kill_enable = sh.db_shader_control.shader_kill_enable;
ps_info.ps_depth_export_enable = sh.db_shader_control.shader_z_export_enable;
ps_info.ps_sample_mask_export_enable = sh.db_shader_control.shader_mask_export_enable;
// Alpha-to-mask coverage must gate depth writes, so it rules out early fragment tests.
ps_info.ps_early_z =
(sh.db_shader_control.shader_z_behavior == 1 && !sh.db_shader_control.shader_kill_enable &&
!sh.db_shader_control.shader_z_export_enable &&
!sh.db_shader_control.shader_mask_export_enable);
!sh.db_shader_control.shader_mask_export_enable && !sh.AlphaToMask());
ps_info.ps_execute_on_noop = sh.db_shader_control.shader_execute_on_noop;
for (uint32_t i = 0; i < ps_info.input_num; i++) {