void setupShaders()

in source/viewer/MenuScreen.h [72:128]
52 lines of code
2 McCabe index (conditional complexity)

  void setupShaders() {
    static const GLchar* VertexShaderSrc =
        "#version 150\n"
        "uniform mat4 matWVP;\n"
        "in      vec4 Position;\n"
        "in      vec4 Color;\n"
        "in      vec2 TexCoord;\n"
        "out     vec2 oTexCoord;\n"
        "out     vec4 oColor;\n"
        "void main()\n"
        "{\n"
        "   gl_Position = (matWVP * Position);\n"
        "   oTexCoord   = TexCoord;\n"
        "   oColor.rgb  = pow(Color.rgb, vec3(2.2));\n" // convert from sRGB to linear
        "   oColor.a    = Color.a;\n"
        "}\n";

    static const char* FragmentShaderSrc =
        "#version 150\n"
        "uniform sampler2D Texture0;\n"
        "in      vec4      oColor;\n"
        "in      vec2      oTexCoord;\n"
        "out     vec4      FragColor;\n"
        "void main()\n"
        "{\n"
        "   FragColor = oColor * texture2D(Texture0, -oTexCoord + vec2(0.5, 0.5));\n"
        "}\n";

    GLuint vshader = CreateShader(GL_VERTEX_SHADER, VertexShaderSrc);
    GLuint fshader = CreateShader(GL_FRAGMENT_SHADER, FragmentShaderSrc);

    static const std::string kLogoFilename = "logo.png";
    static const int kDstChannels = 4;
    int width, height, channels;
    uint8_t* textureBytes =
        stbi_load(kLogoFilename.c_str(), &width, &height, &channels, kDstChannels);
    if (!textureBytes) {
      std::cout << "ERROR LOADING LOGO TEXTURE: " << kLogoFilename << std::endl;
      static uint8_t dummy[] = {
          255,
          0,
          0,
          0,
      };
      textureBytes = dummy;
      width = 1;
      height = 1;
      channels = 4;
    }

    TextureBuffer* generated_texture =
        new TextureBuffer(false, Sizei(width, height), 4, (unsigned char*)textureBytes);

    gridMaterial = new ShaderFill(vshader, fshader, generated_texture);
    glDeleteShader(vshader);
    glDeleteShader(fshader);
  }