EmulateAdvancedBlendEquations.h

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//

// 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"

#include "compiler/translator/tree_ops/spirv/EmulateFramebufferFetch.h"

namespace sh

class TIntermBlock;

class TSymbolTable;

class DriverUniform;

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 AdvancedBlendEquations &advancedBlendEquations,

    const DriverUniform *driverUniforms,

    InputAttachmentMap *inputAttachmentMapOut);

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_TREEOPS_SPIRV_EMULATEADVANCEDBLENDEQUATIONS_H_