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shader: support scalar byte sign extension

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This commit is contained in:
shadowbeat070
2026-10-06 22:22:31 +02:00
committed by nmzik
parent c3a12397b0
commit 9e666e4dd2
5 changed files with 69 additions and 12 deletions
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src/graphics/shader/recompiler/frontend/decode/ScalarAluOps.cpp
+1
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@@ -53,6 +53,7 @@ constexpr OpcodeMap SOP1_OPCODE_LIST[] = {
{0x14u, Opcode::S_FF1_I32_B64},
{0x15u, Opcode::S_FLBIT_I32_B32},
{0x16u, Opcode::S_FLBIT_I32_B64},
{0x19u, Opcode::S_SEXT_I32_I8},
{0x1au, Opcode::S_SEXT_I32_I16},
{0x1bu, Opcode::S_BITSET0_B32},
{0x1cu, Opcode::S_BITSET0_B64},
src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.cpp
+1
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@@ -503,6 +503,7 @@ std::string InstructionToString(const Instruction& inst) {
OperandToString(inst.dst).c_str(),
OperandToString(inst.src0).c_str()));
case Opcode::S_ABS_I32:
case Opcode::S_SEXT_I32_I8:
case Opcode::S_SEXT_I32_I16:
case Opcode::S_BREV_B32:
case Opcode::S_BREV_B64:
src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.h
+1
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@@ -45,6 +45,7 @@ enum class Opcode {
S_CMOV_B64,
S_MOVK_I32,
S_ABS_I32,
S_SEXT_I32_I8,
S_SEXT_I32_I16,
S_ABSDIFF_I32,
S_BREV_B32,
src/graphics/shader/recompiler/frontend/translate/Scalar.cpp
+6 -2
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@@ -134,10 +134,14 @@ void Translator::EmitScalar(const Decoder::Instruction& inst) {
case O::S_ABS_I32:
return SimpleInteger(inst, IR::ValueOpcode::IAbs32, IR::Type::U32, false, false, true);
case O::S_SEXT_I32_I16:
case O::S_SEXT_I32_I8:
case O::S_SEXT_I32_I16: {
// Sign extension leaves SCC unchanged.
const auto bits = inst.opcode == O::S_SEXT_I32_I8 ? 8u : 16u;
WriteOperand(inst.dst, IR::U32(ir.Emit(IR::ValueOpcode::BitFieldSExtract,
{ReadU32(inst.src0), IR::Value(0u), IR::Value(16u)})));
{ReadU32(inst.src0), IR::Value(0u), IR::Value(bits)})));
return;
}
case O::S_MUL_I32:
case O::S_MULK_I32:
return SimpleInteger(inst, IR::ValueOpcode::IMul32, IR::Type::U32, false, false, false);