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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <bit>
#include "shader_recompiler/backend/spirv/emit_spirv.h"
#include "shader_recompiler/backend/spirv/emit_spirv_instructions.h"
namespace Shader::Backend::SPIRV {
namespace {
Id StorageIndex(EmitContext& ctx, const IR::Value& offset, size_t element_size,
u32 index_offset = 0) {
if (offset.IsImmediate()) {
const u32 imm_offset{static_cast<u32>(offset.U32() / element_size) + index_offset};
return ctx.Const(imm_offset);
}
const u32 shift{static_cast<u32>(std::countr_zero(element_size))};
Id index{ctx.Def(offset)};
if (shift != 0) {
const Id shift_id{ctx.Const(shift)};
index = ctx.OpShiftRightLogical(ctx.U32[1], index, shift_id);
}
if (index_offset != 0) {
index = ctx.OpIAdd(ctx.U32[1], index, ctx.Const(index_offset));
}
return index;
}
Id StoragePointer(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
const StorageTypeDefinition& type_def, size_t element_size,
Id StorageDefinitions::*member_ptr, u32 index_offset = 0) {
if (!binding.IsImmediate()) {
throw NotImplementedException("Dynamic storage buffer indexing");
}
const Id ssbo{ctx.ssbos[binding.U32()].*member_ptr};
const Id index{StorageIndex(ctx, offset, element_size, index_offset)};
return ctx.OpAccessChain(type_def.element, ssbo, ctx.u32_zero_value, index);
}
Id LoadStorage(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset, Id result_type,
const StorageTypeDefinition& type_def, size_t element_size,
Id StorageDefinitions::*member_ptr, u32 index_offset = 0) {
const Id pointer{
StoragePointer(ctx, binding, offset, type_def, element_size, member_ptr, index_offset)};
return ctx.OpLoad(result_type, pointer);
}
Id LoadStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
u32 index_offset = 0) {
return LoadStorage(ctx, binding, offset, ctx.U32[1], ctx.storage_types.U32, sizeof(u32),
&StorageDefinitions::U32, index_offset);
}
void WriteStorage(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset, Id value,
const StorageTypeDefinition& type_def, size_t element_size,
Id StorageDefinitions::*member_ptr, u32 index_offset = 0) {
const Id pointer{
StoragePointer(ctx, binding, offset, type_def, element_size, member_ptr, index_offset)};
ctx.OpStore(pointer, value);
}
void WriteStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset, Id value,
u32 index_offset = 0) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32, sizeof(u32),
&StorageDefinitions::U32, index_offset);
}
} // Anonymous namespace
void EmitLoadGlobalU8(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitLoadGlobalS8(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitLoadGlobalU16(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitLoadGlobalS16(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
Id EmitLoadGlobal32(EmitContext& ctx, Id address) {
return ctx.OpFunctionCall(ctx.U32[1], ctx.load_global_func_u32, address);
}
Id EmitLoadGlobal64(EmitContext& ctx, Id address) {
return ctx.OpFunctionCall(ctx.U32[2], ctx.load_global_func_u32x2, address);
}
Id EmitLoadGlobal128(EmitContext& ctx, Id address) {
return ctx.OpFunctionCall(ctx.U32[4], ctx.load_global_func_u32x4, address);
}
void EmitWriteGlobalU8(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitWriteGlobalS8(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitWriteGlobalU16(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitWriteGlobalS16(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
void EmitWriteGlobal32(EmitContext& ctx, Id address, Id value) {
ctx.OpFunctionCall(ctx.void_id, ctx.write_global_func_u32, address, value);
}
void EmitWriteGlobal64(EmitContext& ctx, Id address, Id value) {
ctx.OpFunctionCall(ctx.void_id, ctx.write_global_func_u32x2, address, value);
}
void EmitWriteGlobal128(EmitContext& ctx, Id address, Id value) {
ctx.OpFunctionCall(ctx.void_id, ctx.write_global_func_u32x4, address, value);
}
Id EmitLoadStorageU8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
if (ctx.profile.support_int8 && ctx.profile.support_descriptor_aliasing) {
return ctx.OpUConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.U8, ctx.storage_types.U8,
sizeof(u8), &StorageDefinitions::U8));
} else {
return ctx.OpBitFieldUExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset8(offset), ctx.Const(8u));
}
}
Id EmitLoadStorageS8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
if (ctx.profile.support_int8 && ctx.profile.support_descriptor_aliasing) {
return ctx.OpSConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.S8, ctx.storage_types.S8,
sizeof(s8), &StorageDefinitions::S8));
} else {
return ctx.OpBitFieldSExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset8(offset), ctx.Const(8u));
}
}
Id EmitLoadStorageU16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
if (ctx.profile.support_int16 && ctx.profile.support_descriptor_aliasing) {
return ctx.OpUConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.U16, ctx.storage_types.U16,
sizeof(u16), &StorageDefinitions::U16));
} else {
return ctx.OpBitFieldUExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset16(offset), ctx.Const(16u));
}
}
Id EmitLoadStorageS16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
if (ctx.profile.support_int16 && ctx.profile.support_descriptor_aliasing) {
return ctx.OpSConvert(ctx.U32[1],
LoadStorage(ctx, binding, offset, ctx.S16, ctx.storage_types.S16,
sizeof(s16), &StorageDefinitions::S16));
} else {
return ctx.OpBitFieldSExtract(ctx.U32[1], LoadStorage32(ctx, binding, offset),
ctx.BitOffset16(offset), ctx.Const(16u));
}
}
Id EmitLoadStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
return LoadStorage32(ctx, binding, offset);
}
Id EmitLoadStorage64(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
if (ctx.profile.support_descriptor_aliasing) {
return LoadStorage(ctx, binding, offset, ctx.U32[2], ctx.storage_types.U32x2,
sizeof(u32[2]), &StorageDefinitions::U32x2);
} else {
return ctx.OpCompositeConstruct(ctx.U32[2], LoadStorage32(ctx, binding, offset, 0),
LoadStorage32(ctx, binding, offset, 1));
}
}
Id EmitLoadStorage128(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) {
if (ctx.profile.support_descriptor_aliasing) {
return LoadStorage(ctx, binding, offset, ctx.U32[4], ctx.storage_types.U32x4,
sizeof(u32[4]), &StorageDefinitions::U32x4);
} else {
return ctx.OpCompositeConstruct(ctx.U32[4], LoadStorage32(ctx, binding, offset, 0),
LoadStorage32(ctx, binding, offset, 1),
LoadStorage32(ctx, binding, offset, 2),
LoadStorage32(ctx, binding, offset, 3));
}
}
void EmitWriteStorageU8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage(ctx, binding, offset, ctx.OpSConvert(ctx.U8, value), ctx.storage_types.U8,
sizeof(u8), &StorageDefinitions::U8);
}
void EmitWriteStorageS8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage(ctx, binding, offset, ctx.OpSConvert(ctx.S8, value), ctx.storage_types.S8,
sizeof(s8), &StorageDefinitions::S8);
}
void EmitWriteStorageU16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage(ctx, binding, offset, ctx.OpSConvert(ctx.U16, value), ctx.storage_types.U16,
sizeof(u16), &StorageDefinitions::U16);
}
void EmitWriteStorageS16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage(ctx, binding, offset, ctx.OpSConvert(ctx.S16, value), ctx.storage_types.S16,
sizeof(s16), &StorageDefinitions::S16);
}
void EmitWriteStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
WriteStorage32(ctx, binding, offset, value);
}
void EmitWriteStorage64(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
if (ctx.profile.support_descriptor_aliasing) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32x2, sizeof(u32[2]),
&StorageDefinitions::U32x2);
} else {
for (u32 index = 0; index < 2; ++index) {
const Id element{ctx.OpCompositeExtract(ctx.U32[1], value, index)};
WriteStorage32(ctx, binding, offset, element, index);
}
}
}
void EmitWriteStorage128(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
Id value) {
if (ctx.profile.support_descriptor_aliasing) {
WriteStorage(ctx, binding, offset, value, ctx.storage_types.U32x4, sizeof(u32[4]),
&StorageDefinitions::U32x4);
} else {
for (u32 index = 0; index < 4; ++index) {
const Id element{ctx.OpCompositeExtract(ctx.U32[1], value, index)};
WriteStorage32(ctx, binding, offset, element, index);
}
}
}
} // namespace Shader::Backend::SPIRV
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