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

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• Author : Geoff Lang
  Date : 2013-10-23 14:37:58
  Hash : f11dbdb3
  Message : Added a read pixels test. Change-Id: Ia4c5a0290e62e2c312d86fa18ef4e76d782a4a41 Reviewed-on: https://chromium-review.googlesource.com/179357 Reviewed-by: Nicolas Capens <nicolascapens@chromium.org> Commit-Queue: Nicolas Capens <nicolascapens@chromium.org> Tested-by: Nicolas Capens <nicolascapens@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• tests/angle_tests/ReadPixelsTest.cpp

• #include "ANGLETest.h"
  
  class ReadPixelsTest : public ANGLETest
  {
  protected:
      ReadPixelsTest()
      {
          setWindowWidth(32);
          setWindowHeight(32);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  };
  
  TEST_F(ReadPixelsTest, out_of_bounds)
  {
      glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
      glClear(GL_COLOR_BUFFER_BIT);
      EXPECT_GL_NO_ERROR();
  
      GLsizei pixelsWidth = 32;
      GLsizei pixelsHeight = 32;
      std::vector<GLubyte> pixels(pixelsWidth * pixelsHeight * 4);
  
      glReadPixels(-pixelsWidth / 2, -pixelsHeight / 2, pixelsWidth, pixelsHeight, GL_RGBA, GL_UNSIGNED_BYTE, pixels.data());
      EXPECT_GL_NO_ERROR();
  
      for (int y = pixelsHeight / 2; y < pixelsHeight; y++)
      {
          for (int x = pixelsWidth / 2; x < pixelsWidth; x++)
          {
              const GLubyte* pixel = pixels.data() + ((y * pixelsWidth + x) * 4);
  
              // Expect that all pixels which fell within the framebuffer are red
              EXPECT_EQ(pixel[0], 255);
              EXPECT_EQ(pixel[1], 0);
              EXPECT_EQ(pixel[2], 0);
              EXPECT_EQ(pixel[3], 255);
          }
      }
  }