Force redraw with CADisplayLink

I'm currently using CADisplayLink to show an OpenGL animation which work开发者_如何学Cs great. Sometimes, however a parameter changes and I need to redraw the view immediately and can't wait until the next frame is requested by CADisplayLink. If I don't do that, I get one frame wrong which looks really bad in my case.

So, how can I force a redraw of an EAGLView without interfering with the CADisplayLink stuff?

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If your CADisplayLink is calling method drawFrame, for example, then just call drawFrame yourself when you need to. No reason you need to wait for CADisplayLink if you don't want to.

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Your question suggests that you're storing your data in your view rather than in a data object. You should be able to change your data at any time, and your view should update when its needed to display. Move the data to a model object, and have the EAGLView draw itself based on the data when requested from the CADisplayLink rather than redrawing itself when the data changes.