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//
// Copyright 2002 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.
//
// Emulate gl_FragColor broadcast behaviors in ES2 where
// GL_EXT_draw_buffers is explicitly enabled in a fragment shader.
//
#ifndef COMPILER_TRANSLATOR_TREEOPS_EMULATEGLFRAGCOLORBROADCAST_H_
#define COMPILER_TRANSLATOR_TREEOPS_EMULATEGLFRAGCOLORBROADCAST_H_
#include <vector>
#include "common/angleutils.h"
namespace sh
{
struct ShaderVariable;
class TCompiler;
class TIntermBlock;
class TSymbolTable;
// Replace all gl_FragColor with gl_FragData[0], and in the end of main() function,
// assign gl_FragData[1] ... gl_FragData[maxDrawBuffers - 1] with gl_FragData[0].
// If gl_FragColor is in outputVariables, it is replaced by gl_FragData.
[[nodiscard]] bool EmulateGLFragColorBroadcast(TCompiler *compiler,
TIntermBlock *root,
int maxDrawBuffers,
std::vector<ShaderVariable> *outputVariables,
TSymbolTable *symbolTable,
int shaderVersion);
} // namespace sh
#endif // COMPILER_TRANSLATOR_TREEOPS_EMULATEGLFRAGCOLORBROADCAST_H_
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