kc3-lang/angle/tests/angle_tests/UnpackRowLength.cpp

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• Author : Minmin Gong
  Date : 2015-01-27 14:42:36
  Hash : b8aee3bc
  Message : Add UNPACK_ROW_LENGTH support to D3D11 renderer Change-Id: I31ccffddcb04a45f19d3c3eb9a396c30e794b218 Reviewed-on: https://chromium-review.googlesource.com/243951 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Minmin Gong <mgong@microsoft.com>

• tests/angle_tests/UnpackRowLength.cpp

• #include "ANGLETest.h"
  
  // Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
  ANGLE_TYPED_TEST_CASE(UnpackRowLengthTest, ES3_D3D11, ES2_D3D11);
  
  #include <array>
  
  template<typename T>
  class UnpackRowLengthTest : public ANGLETest
  {
    protected:
      UnpackRowLengthTest() : ANGLETest(T::GetGlesMajorVersion(), T::GetPlatform())
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
          setConfigDepthBits(24);
  
          mProgram = 0;
      }
  
      virtual void SetUp() override
      {
          ANGLETest::SetUp();
  
          const std::string vertexShaderSource = SHADER_SOURCE
          (
              precision highp float;
              attribute vec4 position;
  
              void main()
              {
                  gl_Position = position;
              }
          );
  
          const std::string fragmentShaderSource = SHADER_SOURCE
          (
              uniform sampler2D tex;
  
              void main()
              {
                  gl_FragColor = texture2D(tex, vec2(0.0, 1.0));
              }
          );
  
          mProgram = CompileProgram(vertexShaderSource, fragmentShaderSource);
          if (mProgram == 0)
          {
              FAIL() << "shader compilation failed.";
          }
      }
  
      virtual void TearDown() override
      {
          glDeleteProgram(mProgram);
  
          ANGLETest::TearDown();
      }
  
      void testRowLength(int texSize, int rowLength)
      {
          glPixelStorei(GL_UNPACK_ROW_LENGTH, rowLength);
  
          if (getClientVersion() == 3)
          {
              // Only texSize * texSize region is filled as WHITE, other parts are BLACK.
              // If the UNPACK_ROW_LENGTH is implemented correctly, all texels inside this texture are WHITE.
              std::vector<GLubyte> buf(rowLength * texSize * 4);
              for (int y = 0; y < texSize; y++)
              {
                  std::vector<GLubyte>::iterator rowIter = buf.begin() + y * rowLength * 4;
                  std::fill(rowIter, rowIter + texSize * 4, 255);
                  std::fill(rowIter + texSize * 4, rowIter + rowLength * 4, 0);
              }
  
              GLuint tex;
              glGenTextures(1, &tex);
              glBindTexture(GL_TEXTURE_2D, tex);
  
              glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texSize, texSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, &buf[0]);
              glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
              glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
              glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  
              drawQuad(mProgram, "position", 0.5f);
  
              EXPECT_PIXEL_EQ(0, 0, 255, 255, 255, 255);
              EXPECT_PIXEL_EQ(1, 0, 255, 255, 255, 255);
  
              glDeleteTextures(1, &tex);
          }
          else
          {
              EXPECT_GL_ERROR(GL_INVALID_ENUM);
          }
      }
  
      GLuint mProgram;
  };
  
  TYPED_TEST(UnpackRowLengthTest, RowLength128)
  {
      testRowLength(128, 128);
  }
  
  TYPED_TEST(UnpackRowLengthTest, RowLength1024)
  {
      testRowLength(128, 1024);
  }