kc3-lang/angle/src/tests/end2end_tests/SwizzleTest.cpp

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• Hash : 167dceb3
  Author :
  Date : 2015-03-31T12:49:57
  

  Check for the extension before creating compressed textures in SwizzleTest.
  
  Change-Id: Ia561fc7bb0262ab6974517d9796e4828db5b511c
  Reviewed-on: https://chromium-review.googlesource.com/263251
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  

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• src/tests/end2end_tests/SwizzleTest.cpp

• #include "ANGLETest.h"
  
  #include <vector>
  
  // Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
  ANGLE_TYPED_TEST_CASE(SwizzleTest, ES3_D3D11);
  
  template<typename T>
  class SwizzleTest : public ANGLETest
  {
  protected:
      SwizzleTest() : ANGLETest(T::GetGlesMajorVersion(), T::GetPlatform())
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
  
          GLenum swizzles[] =
          {
              GL_RED,
              GL_GREEN,
              GL_BLUE,
              GL_ALPHA,
              GL_ZERO,
              GL_ONE,
          };
  
          for (int r = 0; r < 6; r++)
          {
              for (int g = 0; g < 6; g++)
              {
                  for (int b = 0; b < 6; b++)
                  {
                      for (int a = 0; a < 6; a++)
                      {
                          swizzlePermutation permutation;
                          permutation.swizzleRed = swizzles[r];
                          permutation.swizzleGreen = swizzles[g];
                          permutation.swizzleBlue = swizzles[b];
                          permutation.swizzleAlpha = swizzles[a];
                          mPermutations.push_back(permutation);
                      }
                  }
              }
          }
      }
  
      virtual void SetUp()
      {
          ANGLETest::SetUp();
  
          const std::string vertexShaderSource = SHADER_SOURCE
          (
              precision highp float;
              attribute vec4 position;
              varying vec2 texcoord;
  
              void main()
              {
                  gl_Position = position;
                  texcoord = (position.xy * 0.5) + 0.5;
              }
          );
  
          const std::string fragmentShaderSource = SHADER_SOURCE
          (
              precision highp float;
              uniform sampler2D tex;
              varying vec2 texcoord;
  
              void main()
              {
                  gl_FragColor = texture2D(tex, texcoord);
              }
          );
  
          mProgram = CompileProgram(vertexShaderSource, fragmentShaderSource);
          if (mProgram == 0)
          {
              FAIL() << "shader compilation failed.";
          }
  
          mTextureUniformLocation = glGetUniformLocation(mProgram, "tex");
  
          glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
      }
  
      virtual void TearDown()
      {
          glDeleteProgram(mProgram);
          glDeleteTextures(1, &mTexture);
  
          ANGLETest::TearDown();
      }
  
      template <typename T>
      void init2DTexture(GLenum internalFormat, GLenum dataFormat, GLenum dataType, const T* data)
      {
          glGenTextures(1, &mTexture);
          glBindTexture(GL_TEXTURE_2D, mTexture);
          glTexStorage2D(GL_TEXTURE_2D, 1, internalFormat, 1, 1);
          glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 1, 1, dataFormat, dataType, data);
  
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
      }
  
      void init2DCompressedTexture(GLenum internalFormat, GLsizei width, GLsizei height, GLsizei dataSize, const GLubyte* data)
      {
          glGenTextures(1, &mTexture);
          glBindTexture(GL_TEXTURE_2D, mTexture);
          glCompressedTexImage2D(GL_TEXTURE_2D, 0, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, width, height, 0, dataSize, data);
  
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
      }
  
      GLubyte getExpectedValue(GLenum swizzle, GLubyte unswizzled[4])
      {
          switch (swizzle)
          {
            case GL_RED:   return unswizzled[0];
            case GL_GREEN: return unswizzled[1];
            case GL_BLUE:  return unswizzled[2];
            case GL_ALPHA: return unswizzled[3];
            case GL_ZERO:  return 0;
            case GL_ONE:   return 255;
            default:       return 0;
          }
      }
  
      void runTest2D()
      {
          glUseProgram(mProgram);
          glBindTexture(GL_TEXTURE_2D, mTexture);
          glUniform1i(mTextureUniformLocation, 0);
  
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED);
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_GREEN);
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_BLUE);
          glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ALPHA);
  
          glClear(GL_COLOR_BUFFER_BIT);
          drawQuad(mProgram, "position", 0.5f);
  
          GLubyte unswizzled[4];
          glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &unswizzled);
  
          for (size_t i = 0; i < mPermutations.size(); i++)
          {
              const swizzlePermutation& permutation = mPermutations[i];
  
              glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, permutation.swizzleRed);
              glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, permutation.swizzleGreen);
              glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, permutation.swizzleBlue);
              glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, permutation.swizzleAlpha);
  
              glClear(GL_COLOR_BUFFER_BIT);
              drawQuad(mProgram, "position", 0.5f);
  
              EXPECT_PIXEL_EQ(0, 0,
                              getExpectedValue(permutation.swizzleRed, unswizzled),
                              getExpectedValue(permutation.swizzleGreen, unswizzled),
                              getExpectedValue(permutation.swizzleBlue, unswizzled),
                              getExpectedValue(permutation.swizzleAlpha, unswizzled));
          }
      }
  
      GLuint mProgram;
      GLint mTextureUniformLocation;
  
      GLuint mTexture;
  
      struct swizzlePermutation
      {
          GLenum swizzleRed;
          GLenum swizzleGreen;
          GLenum swizzleBlue;
          GLenum swizzleAlpha;
      };
      std::vector<swizzlePermutation> mPermutations;
  };
  
  TYPED_TEST(SwizzleTest, RGBA8_2D)
  {
      GLubyte data[] = { 1, 64, 128, 200 };
      init2DTexture(GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, RGB8_2D)
  {
      GLubyte data[] = { 77, 66, 55 };
      init2DTexture(GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, RG8_2D)
  {
      GLubyte data[] = { 11, 99 };
      init2DTexture(GL_RG8, GL_RG, GL_UNSIGNED_BYTE, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, R8_2D)
  {
      GLubyte data[] = { 2 };
      init2DTexture(GL_R8, GL_RED, GL_UNSIGNED_BYTE, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, RGBA32F_2D)
  {
      GLfloat data[] = { 0.25f, 0.5f, 0.75f, 0.8f };
      init2DTexture(GL_RGBA32F, GL_RGBA, GL_FLOAT, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, RGB32F_2D)
  {
      GLfloat data[] = { 0.1f, 0.2f, 0.3f };
      init2DTexture(GL_RGB32F, GL_RGB, GL_FLOAT, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, RG32F_2D)
  {
      GLfloat data[] = { 0.9f, 0.1f  };
      init2DTexture(GL_RG32F, GL_RG, GL_FLOAT, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, R32F_2D)
  {
      GLfloat data[] = { 0.5f };
      init2DTexture(GL_R32F, GL_RED, GL_FLOAT, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, D32F_2D)
  {
      GLfloat data[] = { 0.5f };
      init2DTexture(GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, D16_2D)
  {
      GLushort data[] = { 0xFF };
      init2DTexture(GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, data);
      runTest2D();
  }
  
  TYPED_TEST(SwizzleTest, D24_2D)
  {
      GLuint data[] = { 0xFFFF };
      init2DTexture(GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, data);
      runTest2D();
  }
  
  #include "media/pixel.inl"
  
  TYPED_TEST(SwizzleTest, CompressedDXT_2D)
  {
      if (!extensionEnabled("GL_EXT_texture_compression_dxt1"))
      {
          return;
      }
  
      init2DCompressedTexture(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, pixel_0_width, pixel_0_height, pixel_0_size, pixel_0_data);
      runTest2D();
  }
  

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