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shader: initialize compute EXEC from active subgroup

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This commit is contained in:
nmzik
2026-08-19 20:19:32 +02:00
parent 77db9164b8
commit 705fc93363
3 changed files with 39 additions and 11 deletions
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src/graphics/shader/recompiler/frontend/translate/Translate.cpp
+10 -3
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@@ -841,9 +841,16 @@ bool TranslateProgram(const IR::Program& source, IR::ValueProgram& result,
entry_ir.SetScalarReg(reg, entry_ir.GetUserData(reg));
}
entry_ir.SetExec(IR::U1(IR::Value(true)));
entry_ir.SetExecLo(IR::U32(IR::Value(per_invocation_masks ? 1u : 0xffffffffu)));
entry_ir.SetExecHi(
IR::U32(IR::Value(!per_invocation_masks && source.wave_size > 32u ? 0xffffffffu : 0u)));
if (source.stage == ShaderType::Compute && !per_invocation_masks) {
const auto active = entry_ir.Emit(IR::ValueOpcode::Ballot, {IR::Value(true)});
entry_ir.SetExecLo(entry_ir.CompositeExtract(active, 0));
entry_ir.SetExecHi(source.wave_size > 32u ? entry_ir.CompositeExtract(active, 1)
: IR::U32(IR::Value(0u)));
} else {
entry_ir.SetExecLo(IR::U32(IR::Value(per_invocation_masks ? 1u : 0xffffffffu)));
entry_ir.SetExecHi(IR::U32(
IR::Value(!per_invocation_masks && source.wave_size > 32u ? 0xffffffffu : 0u)));
}
if (source.stage == ShaderType::Compute) {
const auto* cs = compute_input_info;
const auto thread_ids =