bool GLContext::InitEGLSurface()

in PlayAssetDelivery/NativeSample/common/ndk_helper/GLContext.cpp [87:144]

• 46 lines of code
• 3 McCabe index (conditional complexity)

bool GLContext::InitEGLSurface() {
  display_ = eglGetDisplay(EGL_DEFAULT_DISPLAY);
  eglInitialize(display_, 0, 0);

  /*
   * Here specify the attributes of the desired configuration.
   * Below, we select an EGLConfig with at least 8 bits per color
   * component compatible with on-screen windows
   */
  const EGLint attribs[] = {EGL_RENDERABLE_TYPE,
                            EGL_OPENGL_ES2_BIT,  // Request opengl ES2.0
                            EGL_SURFACE_TYPE,
                            EGL_WINDOW_BIT,
                            EGL_BLUE_SIZE,
                            8,
                            EGL_GREEN_SIZE,
                            8,
                            EGL_RED_SIZE,
                            8,
                            EGL_DEPTH_SIZE,
                            24,
                            EGL_NONE};
  color_size_ = 8;
  depth_size_ = 24;

  EGLint num_configs;
  eglChooseConfig(display_, attribs, &config_, 1, &num_configs);

  if (!num_configs) {
    // Fall back to 16bit depth buffer
    const EGLint attribs[] = {EGL_RENDERABLE_TYPE,
                              EGL_OPENGL_ES2_BIT,  // Request opengl ES2.0
                              EGL_SURFACE_TYPE,
                              EGL_WINDOW_BIT,
                              EGL_BLUE_SIZE,
                              8,
                              EGL_GREEN_SIZE,
                              8,
                              EGL_RED_SIZE,
                              8,
                              EGL_DEPTH_SIZE,
                              16,
                              EGL_NONE};
    eglChooseConfig(display_, attribs, &config_, 1, &num_configs);
    depth_size_ = 16;
  }

  if (!num_configs) {
    LOGW("Unable to retrieve EGL config");
    return false;
  }

  surface_ = eglCreateWindowSurface(display_, config_, window_, NULL);
  eglQuerySurface(display_, surface_, EGL_WIDTH, &screen_width_);
  eglQuerySurface(display_, surface_, EGL_HEIGHT, &screen_height_);

  return true;
}