mirrors/yuzu
2
1
Fork 0
mirror of https://github.com/yuzu-emu/yuzu.git synced 2024-07-04 23:31:19 +01:00
Code Issues Releases Activity

shader/memory: Move unaligned load/store to functions

Browse source
This commit is contained in:
ReinUsesLisp 2020-01-25 02:18:14 -03:00
parent 96638f57c9
commit 531f25a037
1 changed files with 27 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
src/video_core/shader/decode/memory.cpp
View file

@ -62,6 +62,20 @@ u32 GetMemorySize(Tegra::Shader::UniformType uniform_type) {
}
}
Node ExtractUnaligned(Node value, Node address, u32 mask, u32 size) {
Node offset = Operation(OperationCode::UBitwiseAnd, address, Immediate(mask));
offset = Operation(OperationCode::ULogicalShiftLeft, std::move(offset), Immediate(3));
return Operation(OperationCode::UBitfieldExtract, std::move(value), std::move(offset),
Immediate(size));
}
Node InsertUnaligned(Node dest, Node value, Node address, u32 mask, u32 size) {
Node offset = Operation(OperationCode::UBitwiseAnd, std::move(address), Immediate(mask));
offset = Operation(OperationCode::ULogicalShiftLeft, std::move(offset), Immediate(3));
return Operation(OperationCode::UBitfieldInsert, std::move(dest), std::move(value),
std::move(offset), Immediate(size));
}
Node Sign16Extend(Node value) {
Node sign = Operation(OperationCode::UBitwiseAnd, value, Immediate(1U << 15));
Node is_sign = Operation(OperationCode::LogicalUEqual, std::move(sign), Immediate(1U << 15));
@ -144,19 +158,23 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
LOG_DEBUG(HW_GPU, "LD_L cache management mode: {}", static_cast<u64>(instr.ld_l.unknown));
[[fallthrough]];
case OpCode::Id::LD_S: {
const auto GetMemory = [&](s32 offset) {
const auto GetAddress = [&](s32 offset) {
ASSERT(offset % 4 == 0);
const Node immediate_offset = Immediate(static_cast<s32>(instr.smem_imm) + offset);
const Node address =
Operation(OperationCode::IAdd, GetRegister(instr.gpr8), immediate_offset);
return opcode->get().GetId() == OpCode::Id::LD_S ? GetSharedMemory(address)
: GetLocalMemory(address);
return Operation(OperationCode::IAdd, GetRegister(instr.gpr8), immediate_offset);
};
const auto GetMemory = [&](s32 offset) {
return opcode->get().GetId() == OpCode::Id::LD_S ? GetSharedMemory(GetAddress(offset))
: GetLocalMemory(GetAddress(offset));
};
switch (instr.ldst_sl.type.Value()) {
case StoreType::Signed16:
case StoreType::Signed16: {
Node address = GetAddress(0);
SetRegister(bb, instr.gpr0, Sign16Extend(GetMemory(0)));
break;
}
case StoreType::Bits32:
case StoreType::Bits64:
case StoreType::Bits128: {
@ -223,12 +241,7 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
// To handle unaligned loads get the bytes used to dereference global memory and extract
// those bytes from the loaded u32.
if (IsUnaligned(type)) {
Node mask = Immediate(GetUnalignedMask(type));
Node offset = Operation(OperationCode::UBitwiseAnd, real_address, std::move(mask));
offset = Operation(OperationCode::ULogicalShiftLeft, offset, Immediate(3));
gmem = Operation(OperationCode::UBitfieldExtract, std::move(gmem),
std::move(offset), Immediate(size));
gmem = ExtractUnaligned(gmem, real_address, GetUnalignedMask(type), size);
}
SetTemporary(bb, i, gmem);
@ -334,12 +347,8 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
Node value = GetRegister(instr.gpr0.Value() + i);
if (IsUnaligned(type)) {
Node mask = Immediate(GetUnalignedMask(type));
Node offset = Operation(OperationCode::UBitwiseAnd, real_address, std::move(mask));
offset = Operation(OperationCode::ULogicalShiftLeft, offset, Immediate(3));
value = Operation(OperationCode::UBitfieldInsert, gmem, std::move(value), offset,
Immediate(size));
const u32 mask = GetUnalignedMask(type);
value = InsertUnaligned(gmem, std::move(value), real_address, mask, size);
}
bb.push_back(Operation(OperationCode::Assign, gmem, value));