debuggerx/eden
1
0
Fork 0
mirror of https://git.eden-emu.dev/eden-emu/eden.git synced 2026-10-08 22:44:56 +00:00
Code Issues Packages Projects Releases Wiki Activity

shader_recompiler: gl_PrimitiveId scatter for geometry-stage stream compaction (#4330)

Browse Source 
Guest shaders that reserve a compacted output slot via subgroup ballot
-> popcount -> atomic add cannot preserve the originating primitives'
relative order once run through the single-invocation subgroup
fallback for stages without subgroup support. gl_PrimitiveId is
already hardware-guaranteed unique and monotonically increasing per
primitive, so CompactionFallbackPass rewrites that pattern into a
gl_PrimitiveId-indexed scatter instead.

Confirmed fixing corrupted/order-scrambled compacted draws in NieR
Automata on a device without geometry-stage subgroup support.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4330
This commit is contained in:
Aydar Kamaltdinov
2026-08-31 11:25:25 +02:00
committed by crueter
parent 1bd6656b3c
commit d0a6e951ff
7 changed files with 75 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/shader_recompiler/ir_opt/passes.h
+1
View File
@@ -13,6 +13,7 @@ struct HostTranslateInfo;
namespace Shader::Optimization {
void CollectShaderInfoPass(Environment& env, IR::Program& program);
void CompactionFallbackPass(IR::Program& program, const HostTranslateInfo& host_info);
void ConditionalBarrierPass(IR::Program& program);
void ConstantPropagationPass(Environment& env, IR::Program& program);
void DeadCodeEliminationPass(IR::Program& program);