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[spirv] new castings for int8/int16/etc (#86)

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This commit introduces extended support for low-precision integer casting (int8, int16) in the SPIR-V shader generation pipeline, improving compatibility and performance across both Android and PC platforms.

Co-authored-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-on: eden-emu/eden#86
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2025-07-23 01:02:10 +02:00 • committed by crueter
parent a974c5a29c
commit 7962c81738
Signed by untrusted user: crueter
GPG key ID: 425ACD2D4830EBC6
10 changed files with 178 additions and 2 deletions
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49
src/shader_recompiler/frontend/ir/ir_emitter.cpp
View file

@ -1730,10 +1730,36 @@ F16F32F64 IREmitter::ConvertIToF(size_t dest_bitsize, size_t src_bitsize, bool i
: ConvertUToF(dest_bitsize, src_bitsize, value, control);
}
U32U64 IREmitter::UConvert(size_t result_bitsize, const U32U64& value) {
U8U16U32U64 IREmitter::UConvert(size_t result_bitsize, const U8U16U32U64& value) {
switch (result_bitsize) {
case 8:
switch (value.Type()) {
case Type::U8:
// Nothing to do
return value;
case Type::U32:
return Inst<U8>(Opcode::ConvertU8U32, value);
default:
break;
}
break;
case 16:
switch (value.Type()) {
case Type::U16:
// Nothing to do
return value;
case Type::U32:
return Inst<U16>(Opcode::ConvertU16U32, value);
default:
break;
}
break;
case 32:
switch (value.Type()) {
case Type::U8:
return Inst<U32>(Opcode::ConvertU32U8, value);
case Type::U16:
return Inst<U32>(Opcode::ConvertU32U16, value);
case Type::U32:
// Nothing to do
return value;
@ -1753,10 +1779,31 @@ U32U64 IREmitter::UConvert(size_t result_bitsize, const U32U64& value) {
default:
break;
}
break;
default:
break;
}
throw NotImplementedException("Conversion from {} to {} bits", value.Type(), result_bitsize);
}
U8U16U32U64 IR::IREmitter::SConvert(size_t result_bitsize, const U8U16U32U64& value) {
switch (result_bitsize) {
case 32:
switch (value.Type()) {
case Type::U8:
return Inst<U32>(Opcode::ConvertS32S8, value);
case Type::U16:
return Inst<U32>(Opcode::ConvertS32S16, value);
default:
break;
}
break;
default:
break;
}
throw NotImplementedException("Signed Conversion from {} to {} bits", value.Type(), result_bitsize);
}
F16F32F64 IREmitter::FPConvert(size_t result_bitsize, const F16F32F64& value, FpControl control) {
switch (result_bitsize) {
case 16:

3
src/shader_recompiler/frontend/ir/ir_emitter.h
View file

@ -305,7 +305,8 @@ public:
[[nodiscard]] F16F32F64 ConvertIToF(size_t dest_bitsize, size_t src_bitsize, bool is_signed,
const Value& value, FpControl control = {});
[[nodiscard]] U32U64 UConvert(size_t result_bitsize, const U32U64& value);
[[nodiscard]] U8U16U32U64 UConvert(size_t result_bitsize, const U8U16U32U64& value);
[[nodiscard]] U8U16U32U64 SConvert(size_t result_bitsize, const U8U16U32U64& value);
[[nodiscard]] F16F32F64 FPConvert(size_t result_bitsize, const F16F32F64& value,
FpControl control = {});

6
src/shader_recompiler/frontend/ir/opcodes.inc
View file

@ -475,6 +475,12 @@ OPCODE(ConvertF64U8, F64, U32,
OPCODE(ConvertF64U16, F64, U32, )
OPCODE(ConvertF64U32, F64, U32, )
OPCODE(ConvertF64U64, F64, U64, )
OPCODE(ConvertU16U32, U16, U32, )
OPCODE(ConvertU32U16, U32, U16, )
OPCODE(ConvertU8U32, U8, U32, )
OPCODE(ConvertU32U8, U32, U8, )
OPCODE(ConvertS32S8, U32, U8, )
OPCODE(ConvertS32S16, U32, U16, )
// Image operations
OPCODE(BindlessImageSampleImplicitLod, F32x4, U32, Opaque, Opaque, Opaque, )

1
src/shader_recompiler/frontend/ir/value.h
View file

@ -269,6 +269,7 @@ using F32 = TypedValue<Type::F32>;
using F64 = TypedValue<Type::F64>;
using U32U64 = TypedValue<Type::U32 | Type::U64>;
using F32F64 = TypedValue<Type::F32 | Type::F64>;
using U8U16U32U64 = TypedValue<Type::U8 | Type::U16 | Type::U32 | Type::U64>;
using U16U32U64 = TypedValue<Type::U16 | Type::U32 | Type::U64>;
using F16F32F64 = TypedValue<Type::F16 | Type::F32 | Type::F64>;
using UAny = TypedValue<Type::U8 | Type::U16 | Type::U32 | Type::U64>;