kc3-lang/angle/src/tests/gl_tests/SRGBFramebufferTest.cpp

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• Author : Geoff Lang
  Date : 2016-10-19 16:14:46
  Hash : 1d2c41d6
  Message : Implement GL_EXT_sRGB_write_control for GL. BUG=angleproject:1547 BUG=655247 Change-Id: I3f04ddc7032e4a47eb21ff3b8586c5b47415bb64 Reviewed-on: https://chromium-review.googlesource.com/400958 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

• src/tests/gl_tests/SRGBFramebufferTest.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.
  //
  
  // SRGBFramebufferTest.cpp: Tests of sRGB framebuffer functionality.
  
  #include "test_utils/ANGLETest.h"
  #include "test_utils/gl_raii.h"
  
  namespace angle
  {
  
  class SRGBFramebufferTest : public ANGLETest
  {
    protected:
      SRGBFramebufferTest()
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  
      void SetUp() override
      {
          ANGLETest::SetUp();
  
          const std::string vs =
              "precision highp float;\n"
              "attribute vec4 position;\n"
              "void main()\n"
              "{\n"
              "   gl_Position = vec4(position.xy, 0.0, 1.0);\n"
              "}\n";
  
          const std::string fs =
              "precision highp float;\n"
              "uniform vec4 color;\n"
              "void main()\n"
              "{\n"
              "   gl_FragColor = color;\n"
              "}\n";
  
          mProgram = CompileProgram(vs, fs);
          ASSERT_NE(0u, mProgram);
  
          mColorLocation = glGetUniformLocation(mProgram, "color");
          ASSERT_NE(-1, mColorLocation);
      }
  
      void TearDown() override
      {
          glDeleteProgram(mProgram);
  
          ANGLETest::TearDown();
      }
  
      GLuint mProgram      = 0;
      GLint mColorLocation = -1;
  };
  
  // Test basic validation of GL_EXT_sRGB_write_control
  TEST_P(SRGBFramebufferTest, Validation)
  {
      GLenum expectedError =
          extensionEnabled("GL_EXT_sRGB_write_control") ? GL_NO_ERROR : GL_INVALID_ENUM;
  
      GLboolean value = GL_FALSE;
      glEnable(GL_FRAMEBUFFER_SRGB_EXT);
      EXPECT_GL_ERROR(expectedError);
  
      glGetBooleanv(GL_FRAMEBUFFER_SRGB_EXT, &value);
      EXPECT_GL_ERROR(expectedError);
      if (expectedError == GL_NO_ERROR)
      {
          EXPECT_EQ(GL_TRUE, value);
      }
  
      glDisable(GL_FRAMEBUFFER_SRGB_EXT);
      EXPECT_GL_ERROR(expectedError);
  
      glGetBooleanv(GL_FRAMEBUFFER_SRGB_EXT, &value);
      EXPECT_GL_ERROR(expectedError);
      if (expectedError == GL_NO_ERROR)
      {
          EXPECT_EQ(GL_FALSE, value);
      }
  }
  
  // Test basic functionality of GL_EXT_sRGB_write_control
  TEST_P(SRGBFramebufferTest, BasicUsage)
  {
      if (!extensionEnabled("GL_EXT_sRGB_write_control") ||
          (!extensionEnabled("GL_EXT_sRGB") && getClientMajorVersion() < 3))
      {
          std::cout
              << "Test skipped because GL_EXT_sRGB_write_control and GL_EXT_sRGB are not available."
              << std::endl;
          return;
      }
  
      GLColor linearColor(64, 127, 191, 255);
      GLColor srgbColor(13, 54, 133, 255);
  
      GLTexture texture;
      glBindTexture(GL_TEXTURE_2D, texture.get());
      glTexImage2D(GL_TEXTURE_2D, 0, GL_SRGB_ALPHA_EXT, 1, 1, 0, GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE,
                   nullptr);
  
      GLFramebuffer framebuffer;
      glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.get());
      glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.get(), 0);
  
      glUseProgram(mProgram);
      glUniform4fv(mColorLocation, 1, srgbColor.toNormalizedVector().data());
  
      glEnable(GL_FRAMEBUFFER_SRGB_EXT);
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_COLOR_NEAR(0, 0, linearColor, 1.0);
  
      glDisable(GL_FRAMEBUFFER_SRGB_EXT);
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_COLOR_NEAR(0, 0, srgbColor, 1.0);
  }
  
  // Use this to select which configurations (e.g. which renderer, which GLES major version) these
  // tests should be run against.
  ANGLE_INSTANTIATE_TEST(SRGBFramebufferTest,
                         ES2_D3D9(),
                         ES2_D3D11(),
                         ES3_D3D11(),
                         ES2_OPENGL(),
                         ES3_OPENGL(),
                         ES2_OPENGLES(),
                         ES3_OPENGLES());
  
  }  // namespace angle