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SintToSnormNz

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This commit is contained in:
mahmoud radwan 2025-04-26 13:07:28 +03:00
parent 9a9aa24756
commit ba36139bc7
6 changed files with 16 additions and 14 deletions
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10
src/shader_recompiler/backend/spirv/emit_spirv_bitwise_conversion.cpp
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@ -108,16 +108,6 @@ Id EmitUnpackSnorm2x16(EmitContext& ctx, Id value) {
return ctx.OpUnpackSnorm2x16(ctx.F32[2], value);
}
Id EmitUnpackSnormNz2x16(EmitContext& ctx, Id value) {
const auto [x, y] = ExtractBitFields<true>(ctx, value, R(0, 16), R(16, 16));
const auto unpacked{ctx.OpCompositeConstruct(ctx.S32[2], x, y)};
constexpr s32 N = std::numeric_limits<u16>::max();
const Id numerator = ctx.OpIAdd(ctx.S32[2], unpacked, ctx.ConstS32(N / 2, N / 2));
const Id denom = ctx.ConstS32(N - 1, N - 1);
const Id result = ctx.OpConvertSToF(ctx.F32[2], ctx.OpUDiv(ctx.S32[2], numerator, denom));
return ctx.OpFma(ctx.F32[2], result, ctx.ConstF32(2.0f, 2.0f), ctx.ConstF32(-1.0f, -1.0f));
}
Id EmitPackUint2x16(EmitContext& ctx, Id value) {
const auto unpacked{ctx.OpBitcast(ctx.U32[2], value)};
const auto [x, y] = ExtractComposite<2>(ctx, ctx.U32, unpacked);

1
src/shader_recompiler/backend/spirv/emit_spirv_instructions.h
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@ -213,7 +213,6 @@ Id EmitPackUnorm2x16(EmitContext& ctx, Id value);
Id EmitUnpackUnorm2x16(EmitContext& ctx, Id value);
Id EmitPackSnorm2x16(EmitContext& ctx, Id value);
Id EmitUnpackSnorm2x16(EmitContext& ctx, Id value);
Id EmitUnpackSnormNz2x16(EmitContext& ctx, Id value);
Id EmitPackUint2x16(EmitContext& ctx, Id value);
Id EmitUnpackUint2x16(EmitContext& ctx, Id value);
Id EmitPackSint2x16(EmitContext& ctx, Id value);

2
src/shader_recompiler/ir/ir_emitter.cpp
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@ -868,8 +868,6 @@ Value IREmitter::Unpack2x16(const AmdGpu::NumberFormat number_format, const U32&
return Inst(Opcode::UnpackUnorm2x16, value);
case AmdGpu::NumberFormat::Snorm:
return Inst(Opcode::UnpackSnorm2x16, value);
case AmdGpu::NumberFormat::SnormNz:
return Inst(Opcode::UnpackSnormNz2x16, value);
case AmdGpu::NumberFormat::Uint:
return Inst(Opcode::UnpackUint2x16, value);
case AmdGpu::NumberFormat::Sint:

1
src/shader_recompiler/ir/opcodes.inc
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@ -204,7 +204,6 @@ OPCODE(PackUnorm2x16, U32, F32x
OPCODE(UnpackUnorm2x16, F32x2, U32, )
OPCODE(PackSnorm2x16, U32, F32x2, )
OPCODE(UnpackSnorm2x16, F32x2, U32, )
OPCODE(UnpackSnormNz2x16, F32x2, U32, )
OPCODE(PackUint2x16, U32, F32x2, )
OPCODE(UnpackUint2x16, F32x2, U32, )
OPCODE(PackSint2x16, U32, F32x2, )

12
src/shader_recompiler/ir/reinterpret.h
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@ -34,6 +34,12 @@ inline F32 ApplyReadNumberConversion(IREmitter& ir, const F32& value,
case AmdGpu::NumberConversion::UnormToUbnorm:
// Convert 0...1 to -1...1
return ir.FPSub(ir.FPMul(value, ir.Imm32(2.f)), ir.Imm32(1.f));
case AmdGpu::NumberConversion::SintToSnormNz: {
const IR::U32 additon = ir.IAdd(ir.IMul(ir.BitCast<U32>(value), ir.Imm32(2)), ir.Imm32(1));
const IR::F32 left = ir.ConvertSToF(32, 32, additon);
const IR::F32 max = ir.Imm32(float(std::numeric_limits<u32>::max()));
return ir.FPDiv(left, max);
}
default:
UNREACHABLE();
}
@ -66,6 +72,12 @@ inline F32 ApplyWriteNumberConversion(IREmitter& ir, const F32& value,
case AmdGpu::NumberConversion::UnormToUbnorm:
// Convert -1...1 to 0...1
return ir.FPDiv(ir.FPAdd(value, ir.Imm32(1.f)), ir.Imm32(2.f));
case AmdGpu::NumberConversion::SintToSnormNz: {
const IR::F32 max = ir.Imm32(float(std::numeric_limits<u32>::max()));
const IR::F32 mul = ir.FPMul(ir.FPClamp(value, ir.Imm32(-1.f), ir.Imm32(1.f)), max);
const IR::F32 left = ir.FPSub(mul, ir.Imm32(1.f));
return ir.BitCast<F32>(U32{ir.FPDiv(left, ir.Imm32(2.f))});
}
default:
UNREACHABLE();
}

4
src/video_core/amdgpu/types.h
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@ -197,6 +197,7 @@ enum class NumberConversion : u32 {
UintToUscaled = 1,
SintToSscaled = 2,
UnormToUbnorm = 3,
SintToSnormNz = 4,
};
struct CompMapping {
@ -287,6 +288,7 @@ inline NumberFormat RemapNumberFormat(const NumberFormat format, const DataForma
case NumberFormat::Uscaled:
return NumberFormat::Uint;
case NumberFormat::Sscaled:
case NumberFormat::SnormNz:
return NumberFormat::Sint;
case NumberFormat::Ubnorm:
return NumberFormat::Unorm;
@ -344,6 +346,8 @@ inline NumberConversion MapNumberConversion(const NumberFormat format) {
return NumberConversion::SintToSscaled;
case NumberFormat::Ubnorm:
return NumberConversion::UnormToUbnorm;
case NumberFormat::SnormNz:
return NumberConversion::SintToSnormNz;
default:
return NumberConversion::None;
}