chromium/third_party/angle/src/tests/compiler_tests/EmulateGLFragColorBroadcast_test.cpp

//
// Copyright 2016 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.
//
// EmulateGLFragColorBroadcast_test.cpp:
//   Tests for gl_FragColor broadcast behavior emulation.
//

#include "GLSLANG/ShaderLang.h"
#include "angle_gl.h"
#include "gtest/gtest.h"
#include "tests/test_utils/compiler_test.h"

usingnamespacesh;

namespace
{

const int kMaxDrawBuffers = …;

class EmulateGLFragColorBroadcastTest : public MatchOutputCodeTest
{ … };

// Verifies that without explicitly enabling GL_EXT_draw_buffers extension
// in the shader, no broadcast emulation.
TEST_F(EmulateGLFragColorBroadcastTest, FragColorNoBroadcast)
{ … }

// Verifies that with explicitly enabling GL_EXT_draw_buffers extension
// in the shader, broadcast is emualted by replacing gl_FragColor with gl_FragData.
TEST_F(EmulateGLFragColorBroadcastTest, FragColorBroadcast)
{ … }

// Verifies that with explicitly enabling GL_EXT_draw_buffers extension
// in the shader with an empty main(), anothing happens.
TEST_F(EmulateGLFragColorBroadcastTest, EmptyMain)
{ … }

}  // namespace