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- // Copyright (c) 2015 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 <stdint.h>
- #include "gpu/command_buffer/tests/gl_manager.h"
- #include "gpu/command_buffer/tests/gl_test_utils.h"
- #include "testing/gtest/include/gtest/gtest.h"
- namespace gpu {
- // A collection of tests that exercise the GL_EXT_srgb extension.
- class GLEXTSRGBTest : public testing::Test {
- protected:
- void SetUp() override { gl_.Initialize(GLManager::Options()); }
- void TearDown() override { gl_.Destroy(); }
- bool IsApplicable() const {
- return GLTestHelper::HasExtension("GL_EXT_sRGB");
- }
- GLManager gl_;
- };
- // Test to ensure that GL_SRGB_ALPHA as glTex(Sub)Image2D parameter works. This
- // is tricky because GL_SRGB_ALPHA is valid in OpenGL ES 2.0 but not valid in
- // OpenGL.
- TEST_F(GLEXTSRGBTest, TexImageSRGBALPHAFormat) {
- if (!IsApplicable())
- return;
- static const int kWidth = 10;
- static const int kHeight = 10;
- static const int kSubImageX = kWidth / 2;
- static const int kSubImageY = kHeight / 2;
- static const int kSubImageWidth = kWidth / 2;
- static const int kSubImageHeight = kHeight / 2;
- static const uint8_t kImageColor[] = {255, 255, 255, 255};
- static const uint8_t kSubImageColor[] = {128, 128, 128, 128};
- uint8_t pixels[kWidth * kHeight * 4];
- GLuint tex = 0;
- glGenTextures(1, &tex);
- glBindTexture(GL_TEXTURE_2D, tex);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- memset(pixels, kImageColor[0], sizeof(pixels));
- glTexImage2D(GL_TEXTURE_2D, 0, GL_SRGB_ALPHA_EXT, kWidth, kHeight, 0,
- GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE, pixels);
- EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
- memset(pixels, kSubImageColor[0], sizeof(pixels));
- glTexSubImage2D(GL_TEXTURE_2D, 0, kSubImageX, kSubImageY, kSubImageWidth,
- kSubImageHeight, GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE, pixels);
- EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
- glBindTexture(GL_TEXTURE_2D, 0);
- GLuint fbo = 0;
- glGenFramebuffers(1, &fbo);
- glBindFramebuffer(GL_FRAMEBUFFER, fbo);
- glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
- tex, 0);
- EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE),
- glCheckFramebufferStatus(GL_FRAMEBUFFER));
- GLTestHelper::CheckPixels(0, 0, kSubImageX, kHeight, 0, kImageColor, nullptr);
- GLTestHelper::CheckPixels(0, 0, kWidth, kSubImageY, 0, kImageColor, nullptr);
- GLTestHelper::CheckPixels(kSubImageX, kSubImageY, kSubImageWidth,
- kSubImageHeight, 0, kSubImageColor, nullptr);
- }
- } // namespace gpu
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