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shader: V_FFBH_I32

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This commit is contained in:
nmzik
2026-08-29 14:03:57 +04:00
parent 618926b124
commit d9ae3ed64c
7 changed files with 57 additions and 6 deletions
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src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.h
+1
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@@ -185,6 +185,7 @@ enum class Opcode {
V_BFREV_B32,
V_FFBH_U32,
V_FFBL_B32,
V_FFBH_I32,
V_ADD_F32,
V_SUB_F32,
V_SUBREV_F32,
src/graphics/shader/recompiler/frontend/decode/VectorAluOps.cpp
+2
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@@ -119,6 +119,7 @@ constexpr OpcodeMap VOP1_OPCODE_LIST[] = {
{0x38u, Opcode::V_BFREV_B32},
{0x39u, Opcode::V_FFBH_U32},
{0x3au, Opcode::V_FFBL_B32},
{0x3bu, Opcode::V_FFBH_I32},
{0x3fu, Opcode::V_FREXP_EXP_I32_F32},
{0x40u, Opcode::V_FREXP_MANT_F32},
{0x42u, Opcode::V_MOVRELD_B32},
@@ -169,6 +170,7 @@ constexpr OpcodeMap VOP3_ENCODED_VOP1_OPCODE_LIST[] = {
{0x38u, Opcode::V_BFREV_B32},
{0x39u, Opcode::V_FFBH_U32},
{0x3au, Opcode::V_FFBL_B32},
{0x3bu, Opcode::V_FFBH_I32},
{0x3fu, Opcode::V_FREXP_EXP_I32_F32},
{0x40u, Opcode::V_FREXP_MANT_F32},
{0x42u, Opcode::V_MOVRELD_B32},
src/graphics/shader/recompiler/frontend/translate/Integer.cpp
+7 -4
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@@ -224,11 +224,14 @@ bool Translator::S_FF1_I32_B64(const Decoder::Instruction& inst) {
return true;
}
bool Translator::V_FFBH_U32(const Decoder::Instruction& inst) {
const auto source = ReadU32(inst.src0);
const auto msb = IR::U32(ir.Emit(IR::ValueOpcode::FindUMsb32, {source}));
bool Translator::V_FFBH_32(const Decoder::Instruction& inst, bool sign) {
const auto source = ReadU32(inst.src0);
const auto value = sign ? ir.BitwiseXor(
source, ir.ShiftRightArithmetic(source, IR::U32(IR::Value(31u))))
: source;
const auto msb = IR::U32(ir.Emit(IR::ValueOpcode::FindUMsb32, {value}));
const auto position = ir.ISub(IR::U32(IR::Value(31u)), msb);
const auto result = ir.Select(ir.INotEqual(source, IR::U32(IR::Value(0u))), position,
const auto result = ir.Select(ir.INotEqual(value, IR::U32(IR::Value(0u))), position,
IR::U32(IR::Value(0xffffffffu)));
WriteOperand(DestinationOperand(inst), result);
return true;
src/graphics/shader/recompiler/frontend/translate/Translator.h
+1 -1
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@@ -182,7 +182,7 @@ private:
bool V_OR3_B32(const Decoder::Instruction& inst);
bool V_XOR3_B32(const Decoder::Instruction& inst);
bool S_FF1_I32_B64(const Decoder::Instruction& inst);
bool V_FFBH_U32(const Decoder::Instruction& inst);
bool V_FFBH_32(const Decoder::Instruction& inst, bool sign);
bool S_FLBIT_I32_B64(const Decoder::Instruction& inst);
bool Integer24(const Decoder::Instruction& inst, bool sign, bool addend);
bool V_MAD_U64_U32(const Decoder::Instruction& inst);
src/graphics/shader/recompiler/frontend/translate/Vector.cpp
+2 -1
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@@ -491,7 +491,8 @@ bool Translator::EmitVector(const Decoder::Instruction& inst, std::string* error
case O::V_AND_OR_B32: return V_AND_OR_B32(inst);
case O::V_OR3_B32: return V_OR3_B32(inst);
case O::V_XOR3_B32: return V_XOR3_B32(inst);
case O::V_FFBH_U32: return V_FFBH_U32(inst);
case O::V_FFBH_U32: return V_FFBH_32(inst, false);
case O::V_FFBH_I32: return V_FFBH_32(inst, true);
case O::V_MAD_I32_I24: return Integer24(inst, true, true);
case O::V_MAD_U32_U24: return Integer24(inst, false, true);