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shader: keep the old V_PERMLANE16 destination for inactive sources without BOUND_CTRL

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nmzik committed 2026-10-25 02:20:44 +02:00
1 parent 5d8381e0f3
commit 67c89e0915
5 files changed
+74 -60
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src/graphics/shader/recompiler/frontend/translate/Control.cpp
+7 -3
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@@ -465,9 +465,13 @@ void Translator::V_PERMLANE16_B32(const Decoder::Instruction& inst, bool x16) {
.fetch_inactive = inst.dst.op_sel,
.bound_control = inst.dst.op_sel_hi,
};
const auto result =
ir.Emit(IR::ValueOpcode::Permlane16U32,
{ReadU32(inst.src0), ReadU32(inst.src1), ReadU32(inst.src2), ir.GetExec()}, flags);
// An EXEC-disabled source lane without FI disables the write unless BOUND_CTRL reads zero.
const auto inactive = flags.fetch_inactive || flags.bound_control
? IR::U32(IR::Value(0u))
: ir.GetVectorReg(static_cast<IR::VectorReg>(inst.dst.reg));
const auto result = ir.Emit(
IR::ValueOpcode::Permlane16U32,
{ReadU32(inst.src0), ReadU32(inst.src1), ReadU32(inst.src2), ir.GetExec(), inactive}, flags);
auto dst = DestinationOperand(inst);
dst.op_sel = false;
dst.op_sel_hi = false;