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shader: add scalar zero-bit count and search operations

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fxpw
2026-10-10 04:24:33 +02:00
committed by nmzik
parent 3b9e176b70
commit fa56c5eae9
7 changed files with 106 additions and 5 deletions
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src/graphics/shader/recompiler/frontend/translate/Integer.cpp
+6 -2
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@@ -221,8 +221,12 @@ void Translator::V_XOR3_B32(const Decoder::Instruction& inst) {
WriteOperand(DestinationOperand(inst), result);
}
void Translator::S_FF1_I32_B64(const Decoder::Instruction& inst) {
const auto source = ExtractU64(ReadU64(inst.src0));
void Translator::S_FF_I32_B64(const Decoder::Instruction& inst, bool find_zero) {
auto source = ReadU32Pair(inst.src0);
if (find_zero) {
source[0] = ir.BitwiseNot(source[0]);
source[1] = ir.BitwiseNot(source[1]);
}
const auto low_lsb = IR::U32(ir.Emit(IR::ValueOpcode::FindILsb32, {source[0]}));
const auto high_lsb = IR::U32(ir.Emit(IR::ValueOpcode::FindILsb32, {source[1]}));
const auto high_position = ir.IAdd(high_lsb, IR::U32(IR::Value(32u)));