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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES2/gl2extchromium.h>
#include "gpu/command_buffer/client/gles2_lib.h"
#include "gpu/command_buffer/service/image_factory.h"
#include "gpu/command_buffer/tests/gl_manager.h"
#include "gpu/command_buffer/tests/gl_test_utils.h"
#include "gpu/command_buffer/tests/texture_image_factory.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_image.h"
#if defined(OS_MACOSX)
#include "gpu/ipc/service/gpu_memory_buffer_factory_io_surface.h"
#endif
namespace gpu {
class GLNativeGMBTest : public testing::Test {
protected:
void SetUp() override {
gl_.Initialize(GLManager::Options());
}
void TearDown() override {
gl_.Destroy();
}
// Runs a simple battery of tests.
void RunBackbufferTestWithOptions(const GLManager::Options& options) {
GLManager gl;
gl.Initialize(options);
gl.MakeCurrent();
// Clear the back buffer and check that it has the right values.
glClearColor(0.0f, 0.25f, 0.5f, 0.7f);
glClear(GL_COLOR_BUFFER_BIT);
uint8_t pixel[4];
memset(pixel, 0, 4);
glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixel);
EXPECT_NEAR(0u, pixel[0], 2);
EXPECT_NEAR(64u, pixel[1], 2);
EXPECT_NEAR(127u, pixel[2], 2);
uint8_t alpha = options.backbuffer_alpha ? 178 : 255;
EXPECT_NEAR(alpha, pixel[3], 2);
// Resize, then clear the back buffer and check its contents.
glResizeCHROMIUM(10, 10, 1, true);
glClearColor(0.5f, 0.6f, 0.7f, 0.8f);
glClear(GL_COLOR_BUFFER_BIT);
memset(pixel, 0, 4);
glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixel);
EXPECT_NEAR(128u, pixel[0], 2);
EXPECT_NEAR(153u, pixel[1], 2);
EXPECT_NEAR(178u, pixel[2], 2);
uint8_t alpha2 = options.backbuffer_alpha ? 204 : 255;
EXPECT_NEAR(alpha2, pixel[3], 2);
// Swap buffers, then clear the back buffer and check its contents.
::gles2::GetGLContext()->SwapBuffers();
glClearColor(0.1f, 0.2f, 0.3f, 0.4f);
glClear(GL_COLOR_BUFFER_BIT);
memset(pixel, 0, 4);
glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixel);
EXPECT_NEAR(25u, pixel[0], 2);
EXPECT_NEAR(51u, pixel[1], 2);
EXPECT_NEAR(76u, pixel[2], 2);
uint8_t alpha3 = options.backbuffer_alpha ? 102 : 255;
EXPECT_NEAR(alpha3, pixel[3], 2);
gl.Destroy();
}
GLManager gl_;
};
TEST_F(GLNativeGMBTest, TestNativeGMBBackbufferWithDifferentConfigurations) {
if (!GLTestHelper::HasExtension("GL_ARB_texture_rectangle")) {
LOG(INFO) << "GL_ARB_texture_rectangle not supported. Skipping test...";
return;
}
#if defined(OS_MACOSX)
GpuMemoryBufferFactoryIOSurface image_factory;
#else
TextureImageFactory image_factory;
image_factory.SetRequiredTextureType(GL_TEXTURE_RECTANGLE_ARB);
#endif
for (int has_alpha = 0; has_alpha <= 1; ++has_alpha) {
for (int msaa = 0; msaa <= 1; ++msaa) {
for (int preserve_backbuffer = 0; preserve_backbuffer <= 1;
++preserve_backbuffer) {
GLManager::Options options;
options.image_factory = &image_factory;
options.multisampled = msaa == 1;
options.backbuffer_alpha = has_alpha == 1;
options.preserve_backbuffer = preserve_backbuffer;
RunBackbufferTestWithOptions(options);
}
}
}
}
} // namespace gpu
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