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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "shader_recompiler/backend/spirv/emit_spirv_instructions.h"
#include "shader_recompiler/backend/spirv/spirv_emit_context.h"
namespace Shader::Backend::SPIRV {
namespace {
Id Pointer(EmitContext& ctx, Id pointer_type, Id array, Id offset, u32 shift) {
const Id shift_id{ctx.Const(shift)};
const Id index{ctx.OpShiftRightArithmetic(ctx.U32[1], offset, shift_id)};
return ctx.OpAccessChain(pointer_type, array, ctx.u32_zero_value, index);
}
Id Word(EmitContext& ctx, Id offset) {
const Id shift_id{ctx.Const(2U)};
const Id index{ctx.OpShiftRightArithmetic(ctx.U32[1], offset, shift_id)};
const Id pointer{ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, index)};
return ctx.OpLoad(ctx.U32[1], pointer);
}
std::pair<Id, Id> ExtractArgs(EmitContext& ctx, Id offset, u32 mask, u32 count) {
const Id shift{ctx.OpShiftLeftLogical(ctx.U32[1], offset, ctx.Const(3U))};
const Id bit{ctx.OpBitwiseAnd(ctx.U32[1], shift, ctx.Const(mask))};
const Id count_id{ctx.Const(count)};
return {bit, count_id};
}
} // Anonymous namespace
Id EmitLoadSharedU8(EmitContext& ctx, Id offset) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{
ctx.OpAccessChain(ctx.shared_u8, ctx.shared_memory_u8, ctx.u32_zero_value, offset)};
return ctx.OpUConvert(ctx.U32[1], ctx.OpLoad(ctx.U8, pointer));
} else {
const auto [bit, count]{ExtractArgs(ctx, offset, 24, 8)};
return ctx.OpBitFieldUExtract(ctx.U32[1], Word(ctx, offset), bit, count);
}
}
Id EmitLoadSharedS8(EmitContext& ctx, Id offset) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{
ctx.OpAccessChain(ctx.shared_u8, ctx.shared_memory_u8, ctx.u32_zero_value, offset)};
return ctx.OpSConvert(ctx.U32[1], ctx.OpLoad(ctx.U8, pointer));
} else {
const auto [bit, count]{ExtractArgs(ctx, offset, 24, 8)};
return ctx.OpBitFieldSExtract(ctx.U32[1], Word(ctx, offset), bit, count);
}
}
Id EmitLoadSharedU16(EmitContext& ctx, Id offset) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u16, ctx.shared_memory_u16, offset, 1)};
return ctx.OpUConvert(ctx.U32[1], ctx.OpLoad(ctx.U16, pointer));
} else {
const auto [bit, count]{ExtractArgs(ctx, offset, 16, 16)};
return ctx.OpBitFieldUExtract(ctx.U32[1], Word(ctx, offset), bit, count);
}
}
Id EmitLoadSharedS16(EmitContext& ctx, Id offset) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u16, ctx.shared_memory_u16, offset, 1)};
return ctx.OpSConvert(ctx.U32[1], ctx.OpLoad(ctx.U16, pointer));
} else {
const auto [bit, count]{ExtractArgs(ctx, offset, 16, 16)};
return ctx.OpBitFieldSExtract(ctx.U32[1], Word(ctx, offset), bit, count);
}
}
Id EmitLoadSharedU32(EmitContext& ctx, Id offset) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u32, ctx.shared_memory_u32, offset, 2)};
return ctx.OpLoad(ctx.U32[1], pointer);
} else {
return Word(ctx, offset);
}
}
Id EmitLoadSharedU64(EmitContext& ctx, Id offset) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u32x2, ctx.shared_memory_u32x2, offset, 3)};
return ctx.OpLoad(ctx.U32[2], pointer);
} else {
const Id shift_id{ctx.Const(2U)};
const Id base_index{ctx.OpShiftRightArithmetic(ctx.U32[1], offset, shift_id)};
const Id next_index{ctx.OpIAdd(ctx.U32[1], base_index, ctx.Const(1U))};
const Id lhs_pointer{ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, base_index)};
const Id rhs_pointer{ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, next_index)};
return ctx.OpCompositeConstruct(ctx.U32[2], ctx.OpLoad(ctx.U32[1], lhs_pointer),
ctx.OpLoad(ctx.U32[1], rhs_pointer));
}
}
Id EmitLoadSharedU128(EmitContext& ctx, Id offset) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u32x4, ctx.shared_memory_u32x4, offset, 4)};
return ctx.OpLoad(ctx.U32[4], pointer);
}
const Id shift_id{ctx.Const(2U)};
const Id base_index{ctx.OpShiftRightArithmetic(ctx.U32[1], offset, shift_id)};
std::array<Id, 4> values{};
for (u32 i = 0; i < 4; ++i) {
const Id index{i == 0 ? base_index : ctx.OpIAdd(ctx.U32[1], base_index, ctx.Const(i))};
const Id pointer{ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, index)};
values[i] = ctx.OpLoad(ctx.U32[1], pointer);
}
return ctx.OpCompositeConstruct(ctx.U32[4], values);
}
void EmitWriteSharedU8(EmitContext& ctx, Id offset, Id value) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{
ctx.OpAccessChain(ctx.shared_u8, ctx.shared_memory_u8, ctx.u32_zero_value, offset)};
ctx.OpStore(pointer, ctx.OpUConvert(ctx.U8, value));
} else {
ctx.OpFunctionCall(ctx.void_id, ctx.shared_store_u8_func, offset, value);
}
}
void EmitWriteSharedU16(EmitContext& ctx, Id offset, Id value) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u16, ctx.shared_memory_u16, offset, 1)};
ctx.OpStore(pointer, ctx.OpUConvert(ctx.U16, value));
} else {
ctx.OpFunctionCall(ctx.void_id, ctx.shared_store_u16_func, offset, value);
}
}
void EmitWriteSharedU32(EmitContext& ctx, Id offset, Id value) {
Id pointer{};
if (ctx.profile.support_explicit_workgroup_layout) {
pointer = Pointer(ctx, ctx.shared_u32, ctx.shared_memory_u32, offset, 2);
} else {
const Id shift{ctx.Const(2U)};
const Id word_offset{ctx.OpShiftRightArithmetic(ctx.U32[1], offset, shift)};
pointer = ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, word_offset);
}
ctx.OpStore(pointer, value);
}
void EmitWriteSharedU64(EmitContext& ctx, Id offset, Id value) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u32x2, ctx.shared_memory_u32x2, offset, 3)};
ctx.OpStore(pointer, value);
return;
}
const Id shift{ctx.Const(2U)};
const Id word_offset{ctx.OpShiftRightArithmetic(ctx.U32[1], offset, shift)};
const Id next_offset{ctx.OpIAdd(ctx.U32[1], word_offset, ctx.Const(1U))};
const Id lhs_pointer{ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, word_offset)};
const Id rhs_pointer{ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, next_offset)};
ctx.OpStore(lhs_pointer, ctx.OpCompositeExtract(ctx.U32[1], value, 0U));
ctx.OpStore(rhs_pointer, ctx.OpCompositeExtract(ctx.U32[1], value, 1U));
}
void EmitWriteSharedU128(EmitContext& ctx, Id offset, Id value) {
if (ctx.profile.support_explicit_workgroup_layout) {
const Id pointer{Pointer(ctx, ctx.shared_u32x4, ctx.shared_memory_u32x4, offset, 4)};
ctx.OpStore(pointer, value);
return;
}
const Id shift{ctx.Const(2U)};
const Id base_index{ctx.OpShiftRightArithmetic(ctx.U32[1], offset, shift)};
for (u32 i = 0; i < 4; ++i) {
const Id index{i == 0 ? base_index : ctx.OpIAdd(ctx.U32[1], base_index, ctx.Const(i))};
const Id pointer{ctx.OpAccessChain(ctx.shared_u32, ctx.shared_memory_u32, index)};
ctx.OpStore(pointer, ctx.OpCompositeExtract(ctx.U32[1], value, i));
}
}
} // namespace Shader::Backend::SPIRV
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