//
// Copyright 2022 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// EmulateAdvancedBlendEquations.h: Emulate advanced blend equations by implicitly reading back from
// the color attachment (as an input attachment) and apply the equation function based on a uniform.
//

#ifndef COMPILER_TRANSLATOR_TREEOPS_SPIRV_EMULATEADVANCEDBLENDEQUATIONS_H_
#define COMPILER_TRANSLATOR_TREEOPS_SPIRV_EMULATEADVANCEDBLENDEQUATIONS_H_

#include "common/angleutils.h"
#include "compiler/translator/Compiler.h"

namespace sh
{

class TCompiler;
class TIntermBlock;
class TSymbolTable;
class DriverUniform;
struct ShaderVariable;
class AdvancedBlendEquations;

// Declares the necessary input attachment (if not already for framebuffer fetch), loads from it and
// implements the specified advanced blend equation functions.  A driver uniform is used to select
// which function to use at runtime.
[[nodiscard]] bool EmulateAdvancedBlendEquations(
    TCompiler *compiler,
    TIntermBlock *root,
    TSymbolTable *symbolTable,
    const DriverUniform *driverUniforms,
    std::vector<ShaderVariable> *uniforms,
    const AdvancedBlendEquations &advancedBlendEquations);

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_TREEOPS_SPIRV_EMULATEADVANCEDBLENDEQUATIONS_H_
