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

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• Author : Geoff Lang
  Date : 2015-01-29 13:25:14
  Hash : b9266276
  Message : Update texture size information on egl[Bind|Release]TexImage. BUG=450257 Change-Id: I7609131d78f255bf9f79b42f39b02303a5c14b60 Reviewed-on: https://chromium-review.googlesource.com/243915 Reviewed-by: Nicolas Capens <capn@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• tests/angle_tests/BindTexImageTest.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(BindTexImageTest, ES2_D3D9, ES2_D3D11);
  
  template<typename T>
  class BindTexImageTest : public ANGLETest
  {
    protected:
      BindTexImageTest() : ANGLETest(T::GetGlesMajorVersion(), T::GetPlatform())
      {
          setWindowWidth(512);
          setWindowHeight(512);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  
      virtual void SetUp()
      {
          ANGLETest::SetUp();
  
          const std::string vsSource = SHADER_SOURCE
          (
              precision highp float;
              attribute vec4 position;
              varying vec2 texcoord;
  
              void main()
              {
                  gl_Position = position;
                  texcoord = (position.xy * 0.5) + 0.5;
                  texcoord.y = 1.0 - texcoord.y;
              }
          );
  
          const std::string textureFSSource = SHADER_SOURCE
          (
              precision highp float;
              uniform sampler2D tex;
              varying vec2 texcoord;
  
              void main()
              {
                  gl_FragColor = texture2D(tex, texcoord);
              }
          );
  
          mTextureProgram = CompileProgram(vsSource, textureFSSource);
          if (mTextureProgram == 0)
          {
              FAIL() << "shader compilation failed.";
          }
  
          mTextureUniformLocation = glGetUniformLocation(mTextureProgram, "tex");
  
  
          const EGLint pBufferAttributes[] =
          {
              EGL_WIDTH, mPbufferSize,
              EGL_HEIGHT, mPbufferSize,
              EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGBA,
              EGL_TEXTURE_TARGET, EGL_TEXTURE_2D,
              EGL_NONE, EGL_NONE,
          };
  
          EGLWindow *window = getEGLWindow();
          mPbuffer = eglCreatePbufferSurface(window->getDisplay(), window->getConfig(), pBufferAttributes);
          ASSERT_NE(mPbuffer, EGL_NO_SURFACE);
  
          ASSERT_GL_NO_ERROR();
      }
  
      virtual void TearDown()
      {
          glDeleteProgram(mTextureProgram);
  
          EGLWindow *window = getEGLWindow();
          eglDestroySurface(window->getDisplay(), mPbuffer);
  
          ANGLETest::TearDown();
      }
  
      GLuint mTextureProgram;
      GLint mTextureUniformLocation;
  
      const size_t mPbufferSize = 32;
      EGLSurface mPbuffer;
  };
  
  // Verify that when eglBind/ReleaseTexImage are called, the texture images are freed and their
  // size information is correctly updated.
  TYPED_TEST(BindTexImageTest, TextureSizeReset)
  {
      GLuint texture = 0;
      glGenTextures(1, &texture);
      glBindTexture(GL_TEXTURE_2D, texture);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
      EXPECT_GL_NO_ERROR();
  
      glUseProgram(mTextureProgram);
      glUniform1i(mTextureUniformLocation, 0);
  
      // Fill the texture with white pixels
      std::vector<GLubyte> whitePixels(mPbufferSize * mPbufferSize * 4, 255);
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, mPbufferSize, mPbufferSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, &whitePixels[0]);
      EXPECT_GL_NO_ERROR();
  
      // Draw the white texture and verify that the pixels are correct
      drawQuad(mTextureProgram, "position", 0.5f);
      EXPECT_PIXEL_EQ(0, 0, 255, 255, 255, 255);
  
      // Bind the EGL surface and draw with it, results are undefined since nothing has
      // been written to it
      EGLWindow *window = getEGLWindow();
      eglBindTexImage(window->getDisplay(), mPbuffer, EGL_BACK_BUFFER);
      drawQuad(mTextureProgram, "position", 0.5f);
      EXPECT_GL_NO_ERROR();
  
      // Clear the back buffer to a unique color (green)
      glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
      glClear(GL_COLOR_BUFFER_BIT);
      EXPECT_PIXEL_EQ(0, 0, 0, 255, 0, 255);
  
      // Unbind the EGL surface and try to draw with the texture again, the texture's size should
      // now be zero and incomplete so the back buffer should be black
      eglReleaseTexImage(window->getDisplay(), mPbuffer, EGL_BACK_BUFFER);
      drawQuad(mTextureProgram, "position", 0.5f);
      EXPECT_PIXEL_EQ(0, 0, 0, 0, 0, 255);
  }