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shader: fix incorrect per-lane VCCZ/EXECZ reads

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This commit is contained in:
nmzik
2026-09-09 13:22:09 +04:00
parent 32ea0869e5
commit 1af19eabf0
2 changed files with 29 additions and 5 deletions
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src/graphics/shader/recompiler/frontend/translate/Translate.cpp
+9 -5
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@@ -134,11 +134,15 @@ IR::U32 Translator::ReadRawU32(const Decoder::Operand& operand) {
case Decoder::OperandKind::Scc:
return ir.Select(ir.GetScc(), IR::U32(IR::Value(1u)), IR::U32(IR::Value(0u)));
case Decoder::OperandKind::VccZ:
return ir.Select(ir.LogicalNot(ir.GetVcc()), IR::U32(IR::Value(1u)),
IR::U32(IR::Value(0u)));
case Decoder::OperandKind::ExecZ:
return ir.Select(ir.LogicalNot(ir.GetExec()), IR::U32(IR::Value(1u)),
IR::U32(IR::Value(0u)));
case Decoder::OperandKind::ExecZ: {
const bool vcc = operand.kind == Decoder::OperandKind::VccZ;
auto mask = vcc ? ir.GetVccLo() : ir.GetExecLo();
if (program.wave_size == 64u) {
mask = ir.BitwiseOr(mask, vcc ? ir.GetVccHi() : ir.GetExecHi());
}
const auto zero = IR::U32(IR::Value(0u));
return ir.Select(ir.IEqual(mask, zero), IR::U32(IR::Value(1u)), zero);
}
default: EXIT("invalid decoded operand used as a raw U32 source");
}
}