Function initGL

cpp/0_Introduction/simpleCUDA2GL/main.cpp:703–748

/////////////////////////////////////////////////////////////////////////// Initialize GL ///////////////////////////////////////////////////////////////////////////

//! Initialize GL
////////////////////////////////////////////////////////////////////////////////
bool initGL(int *argc, char **argv)
{
    // Create GL context
    glutInit(argc, argv);
    glutInitDisplayMode(GLUT_RGBA | GLUT_ALPHA | GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(window_width, window_height);
    iGLUTWindowHandle = glutCreateWindow("CUDA OpenGL post-processing");

    // initialize necessary OpenGL extensions
    if (!isGLVersionSupported(2, 0)
        || !areGLExtensionsSupported("GL_ARB_pixel_buffer_object "
                                     "GL_EXT_framebuffer_object")) {
        printf("ERROR: Support for necessary OpenGL extensions missing.");
        fflush(stderr);
        return false;
    }

// default initialization
#ifndef USE_TEXTURE_RGBA8UI
    glClearColor(0.5, 0.5, 0.5, 1.0);
#else
    glClearColorIuiEXT(128, 128, 128, 255);
#endif
    glDisable(GL_DEPTH_TEST);

    // viewport
    glViewport(0, 0, window_width, window_height);

    // projection
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(60.0, (GLfloat)window_width / (GLfloat)window_height, 0.1f, 10.0f);

    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);

    glEnable(GL_LIGHT0);
    float red[]   = {1.0f, 0.1f, 0.1f, 1.0f};
    float white[] = {1.0f, 1.0f, 1.0f, 1.0f};
    glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, red);
    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, white);
    glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 60.0f);

    SDK_CHECK_ERROR_GL();

    return true;
}