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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string_view>
#include "shader_recompiler/backend/glsl/emit_context.h"
#include "shader_recompiler/backend/glsl/emit_glsl_instructions.h"
#include "shader_recompiler/frontend/ir/value.h"
namespace Shader::Backend::GLSL {
namespace {
constexpr char cas_loop[]{"for(;;){{uint old_value={};uint "
"cas_result=atomicCompSwap({},old_value,bitfieldInsert({},{},{},{}));"
"if(cas_result==old_value){{break;}}}}"};
void SsboWriteCas(EmitContext& ctx, const IR::Value& binding, std::string_view offset_var,
std::string_view value, std::string_view bit_offset, u32 num_bits) {
const auto ssbo{fmt::format("{}_ssbo{}[{}>>2]", ctx.stage_name, binding.U32(), offset_var)};
ctx.Add(cas_loop, ssbo, ssbo, ssbo, value, bit_offset, num_bits);
}
} // Anonymous namespace
void EmitLoadGlobalU8([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitLoadGlobalS8([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitLoadGlobalU16([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitLoadGlobalS16([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitLoadGlobal32(EmitContext& ctx, IR::Inst& inst, std::string_view address) {
ctx.AddU32("{}=LoadGlobal32({});", inst, address);
}
void EmitLoadGlobal64(EmitContext& ctx, IR::Inst& inst, std::string_view address) {
ctx.AddU32x2("{}=LoadGlobal64({});", inst, address);
}
void EmitLoadGlobal128(EmitContext& ctx, IR::Inst& inst, std::string_view address) {
ctx.AddU32x4("{}=LoadGlobal128({});", inst, address);
}
void EmitWriteGlobalU8([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitWriteGlobalS8([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitWriteGlobalU16([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitWriteGlobalS16([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
void EmitWriteGlobal32(EmitContext& ctx, std::string_view address, std::string_view value) {
ctx.Add("WriteGlobal32({},{});", address, value);
}
void EmitWriteGlobal64(EmitContext& ctx, std::string_view address, std::string_view value) {
ctx.Add("WriteGlobal64({},{});", address, value);
}
void EmitWriteGlobal128(EmitContext& ctx, std::string_view address, std::string_view value) {
ctx.Add("WriteGlobal128({},{});", address, value);
}
void EmitLoadStorageU8([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.AddU32("{}=bitfieldExtract({}_ssbo{}[{}>>2],int({}%4)*8,8);", inst, ctx.stage_name,
binding.U32(), offset_var, offset_var);
}
void EmitLoadStorageS8([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.AddS32("{}=bitfieldExtract(int({}_ssbo{}[{}>>2]),int({}%4)*8,8);", inst, ctx.stage_name,
binding.U32(), offset_var, offset_var);
}
void EmitLoadStorageU16([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.AddU32("{}=bitfieldExtract({}_ssbo{}[{}>>2],int(({}>>1)%2)*16,16);", inst, ctx.stage_name,
binding.U32(), offset_var, offset_var);
}
void EmitLoadStorageS16([[maybe_unused]] EmitContext& ctx, IR::Inst& inst,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.AddS32("{}=bitfieldExtract(int({}_ssbo{}[{}>>2]),int(({}>>1)%2)*16,16);", inst,
ctx.stage_name, binding.U32(), offset_var, offset_var);
}
void EmitLoadStorage32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
const IR::Value& offset) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.AddU32("{}={}_ssbo{}[{}>>2];", inst, ctx.stage_name, binding.U32(), offset_var);
}
void EmitLoadStorage64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
const IR::Value& offset) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.AddU32x2("{}=uvec2({}_ssbo{}[{}>>2],{}_ssbo{}[({}+4)>>2]);", inst, ctx.stage_name,
binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var);
}
void EmitLoadStorage128(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
const IR::Value& offset) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.AddU32x4("{}=uvec4({}_ssbo{}[{}>>2],{}_ssbo{}[({}+4)>>2],{}_ssbo{}[({}+8)>>2],{}_ssbo{}[({}"
"+12)>>2]);",
inst, ctx.stage_name, binding.U32(), offset_var, ctx.stage_name, binding.U32(),
offset_var, ctx.stage_name, binding.U32(), offset_var, ctx.stage_name,
binding.U32(), offset_var);
}
void EmitWriteStorageU8([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
const auto bit_offset{fmt::format("int({}%4)*8", offset_var)};
SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 8);
}
void EmitWriteStorageS8([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
const auto bit_offset{fmt::format("int({}%4)*8", offset_var)};
SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 8);
}
void EmitWriteStorageU16([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
const auto bit_offset{fmt::format("int(({}>>1)%2)*16", offset_var)};
SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 16);
}
void EmitWriteStorageS16([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
const auto bit_offset{fmt::format("int(({}>>1)%2)*16", offset_var)};
SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 16);
}
void EmitWriteStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.Add("{}_ssbo{}[{}>>2]={};", ctx.stage_name, binding.U32(), offset_var, value);
}
void EmitWriteStorage64(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,
std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.Add("{}_ssbo{}[{}>>2]={}.x;", ctx.stage_name, binding.U32(), offset_var, value);
ctx.Add("{}_ssbo{}[({}+4)>>2]={}.y;", ctx.stage_name, binding.U32(), offset_var, value);
}
void EmitWriteStorage128([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& binding,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
ctx.Add("{}_ssbo{}[{}>>2]={}.x;", ctx.stage_name, binding.U32(), offset_var, value);
ctx.Add("{}_ssbo{}[({}+4)>>2]={}.y;", ctx.stage_name, binding.U32(), offset_var, value);
ctx.Add("{}_ssbo{}[({}+8)>>2]={}.z;", ctx.stage_name, binding.U32(), offset_var, value);
ctx.Add("{}_ssbo{}[({}+12)>>2]={}.w;", ctx.stage_name, binding.U32(), offset_var, value);
}
} // namespace Shader::Backend::GLSL
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