swung0x48/MobileGL
1
0
Fork 0
mirror of https://github.com/MobileGL-Dev/MobileGL synced 2026-09-11 13:48:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

[Fix, Test] (DirectVulkan, ShaderTranspiler, TraceReplay): repair iterationRP's missing reduction barrier

Browse Source 
Program 203 reuses prefixSumCache for a second subgroup reduction before every workgroup invocation has consumed the first result. Add a fingerprint-gated SPIR-V pass that inserts the missing Workgroup acquire-release barrier while preserving native subgroup operations.

Keep the repair opt-in behind MOBILEGL_ITERATIONRP_FIX_BARRIER, cover insertion, pass-through, and idempotence, and enable it together with the existing iterationRP subgroup repairs for the matching Linux and Android CI retraces.
This commit is contained in:
swung0x48
2026-08-19 23:42:17 -04:00
parent 5bd8ef01e5
commit c09045fe59
20 changed files with 583 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MobileGL/Config.h
+4
View File
@@ -100,6 +100,10 @@ namespace MobileGL::MG_Config {
// itself on >= 16-lane devices. Auto is ON; ForceOff replays the pack's bug
// verbatim.
QuirkOverride FixIterationRPSubgroupScratch = QuirkOverride::Auto;
// MOBILEGL_ITERATIONRP_FIX_BARRIER: repair Program 203's missing workgroup
// rendezvous between its two reductions over prefixSumCache. Off by default and
// fingerprint-gated by FixIterationRPBarrierPass when enabled.
Bool IterationRPFixBarrier = false;
// MOBILEGL_DERIVE_NUM_SUBGROUPS: replace compute gl_NumSubgroups loads with
// ceil(workgroup invocations / gl_SubgroupSize) on the NATIVE subgroup path
// (ShaderTranspiler::DeriveNumSubgroupsPass). Auto is ON: GL requires