OpenGL invalid framebuffer operation after glClear(GL_COLOR_BUFFER_BIT);

Question

Every time after I call glClear(GL_COLOR_BUFFER_BIT);, I get the OpenGL error \"invalid framebuffer operation\".

The call seems to work just fine, and n

Answer 1

I was having this issue on osx using NSOpenGLView with a CVDisplayLink to trigger the render callback.

Be sure to wait for the NSOpenGLView to be fully displayed before starting rendering, i.e. :

-(void)viewDidAppear {
    [super viewDidAppear];

    CVDisplayLinkStart(_displayLink);
}

Doing it in viewDidLoad is too early.