OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tu: Disable LRZ write when alpha-to-coverage is enabled

Browse Source 
Alpha-to-coverage acts like discard and happens after FS ends,
so like with discard LRZ write should be disabled.
With discard we don't know at the moment of binning whether
fragment would be not discarded, so we cannot write its depth to LRZ.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/6876

Cc: mesa-stable

Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18083>
This commit is contained in:
Danylo Piliaiev
2022-08-16 16:45:39 +03:00
committed by Marge Bot
parent 59dca6f6e1
commit c45fded26b
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/freedreno/vulkan/tu_pipeline.c
View File

@@ -3625,7 +3625,7 @@ tu_pipeline_builder_parse_depth_stencil(struct tu_pipeline_builder *builder,
if (builder->shaders->variants[MESA_SHADER_FRAGMENT]) {
const struct ir3_shader_variant *fs = builder->shaders->variants[MESA_SHADER_FRAGMENT];
if (fs->has_kill || fs->no_earlyz || fs->writes_pos) {
if (fs->has_kill || builder->alpha_to_coverage) {
pipeline->lrz.force_disable_mask |= TU_LRZ_FORCE_DISABLE_WRITE;
}
if (fs->no_earlyz || fs->writes_pos) {