glReadPixel

[limbo-lab]

Hi, I'm an newbie to gl. I wanna render to an image(not snapshot). I googled and found that glReadPixel meets my requirements. However it has some to do with FrameBuffer and I can't not find any trace of FrameBuffer in BCMeshTransformView.

[Ciechan]

BCMeshTransformView uses GLKView internally which has the snapshot method that does exactly this – renders its content to an image. It uses glReadPixels internally so this is pretty much what you want.