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

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• Author : Jamie Madill
  Date : 2014-07-17 10:40:49
  Hash : b759a748
  Message : Fix test class names to reflect their class-ness. Style guide dictates a camel case scheme for classes. Since the tests are actually classes, update their names to reflect that. Change-Id: Ib7422b6d8c5de8414765439704fc103eae8b2d63 Reviewed-on: https://chromium-review.googlesource.com/208680 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Zhenyao Mo <zmo@chromium.org>

• tests/angle_tests/IncompleteTextureTest.cpp

• #include "ANGLETest.h"
  
  #include <vector>
  
  class IncompleteTextureTest : public ANGLETest
  {
  protected:
      IncompleteTextureTest()
      {
          setWindowWidth(128);
          setWindowHeight(128);
          setConfigRedBits(8);
          setConfigGreenBits(8);
          setConfigBlueBits(8);
          setConfigAlphaBits(8);
      }
  
      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");
      }
  
      virtual void TearDown()
      {
          glDeleteProgram(mProgram);
  
          ANGLETest::TearDown();
      }
  
      void fillTextureData(std::vector<GLubyte> &buffer, GLubyte r, GLubyte g, GLubyte b, GLubyte a)
      {
          size_t count = buffer.size() / 4;
          for (size_t i = 0; i < count; i++)
          {
              buffer[i * 4 + 0] = r;
              buffer[i * 4 + 1] = g;
              buffer[i * 4 + 2] = b;
              buffer[i * 4 + 3] = a;
          }
      }
  
      GLuint mProgram;
      GLint mTextureUniformLocation;
  };
  
  TEST_F(IncompleteTextureTest, IncompleteTexture2D)
  {
      GLuint tex;
      glGenTextures(1, &tex);
      glActiveTexture(GL_TEXTURE0);
      glBindTexture(GL_TEXTURE_2D, tex);
  
      glUseProgram(mProgram);
      glUniform1i(mTextureUniformLocation, 0);
  
      const GLsizei textureWidth = 2;
      const GLsizei textureHeight = 2;
      std::vector<GLubyte> textureData(textureWidth * textureHeight * 4);
      fillTextureData(textureData, 255, 0, 0, 255);
  
      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, textureWidth, textureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData.data());
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255);
  
      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
  
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_EQ(0, 0, 0, 0, 0, 255);
  
      glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA, textureWidth >> 1, textureHeight >> 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData.data());
  
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_EQ(0, 0, 255, 0, 0, 255);
  
      glDeleteTextures(1, &tex);
  }
  
  TEST_F(IncompleteTextureTest, UpdateTexture)
  {
      GLuint tex;
      glGenTextures(1, &tex);
      glActiveTexture(GL_TEXTURE0);
      glBindTexture(GL_TEXTURE_2D, tex);
  
      glUseProgram(mProgram);
      glUniform1i(mTextureUniformLocation, 0);
  
      const GLsizei redTextureWidth = 64;
      const GLsizei redTextureHeight = 64;
      std::vector<GLubyte> redTextureData(redTextureWidth * redTextureHeight * 4);
      fillTextureData(redTextureData, 255, 0, 0, 255);
      for (size_t i = 0; i < 7; i++)
      {
          glTexImage2D(GL_TEXTURE_2D, i, GL_RGBA, redTextureWidth >> i, redTextureHeight >> i, 0, GL_RGBA, GL_UNSIGNED_BYTE,
                       redTextureData.data());
      }
  
      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, 0, 0, 255);
  
      const GLsizei greenTextureWidth = 32;
      const GLsizei greenTextureHeight = 32;
      std::vector<GLubyte> greenTextureData(greenTextureWidth * greenTextureHeight * 4);
      fillTextureData(greenTextureData, 0, 255, 0, 255);
  
      for (size_t i = 0; i < 6; i++)
      {
          glTexSubImage2D(GL_TEXTURE_2D, i, greenTextureWidth >> i, greenTextureHeight >> i,
                          greenTextureWidth >> i, greenTextureHeight >> i, GL_RGBA, GL_UNSIGNED_BYTE,
                          greenTextureData.data());
      }
  
      drawQuad(mProgram, "position", 0.5f);
      EXPECT_PIXEL_EQ(getWindowWidth() - greenTextureWidth, getWindowHeight() - greenTextureWidth, 0, 255, 0, 255);
  
      glDeleteTextures(1, &tex);
  }