yuzu-mainline/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp

// 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 {
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)};
    ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int({}%4)*8,8);", ctx.stage_name,
            binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var, value,
            offset_var);
}

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)};
    ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int({}%4)*8,8);", ctx.stage_name,
            binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var, value,
            offset_var);
}

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)};
    ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int(({}>>1)%2)*16,16);",
            ctx.stage_name, binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var,
            value, offset_var);
}

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)};
    ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int(({}>>1)%2)*16,16);",
            ctx.stage_name, binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var,
            value, offset_var);
}

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