Re: copyCGLContextForPixelFormat
Re: copyCGLContextForPixelFormat
- Subject: Re: copyCGLContextForPixelFormat
- From: John Harper <email@hidden>
- Date: Mon, 4 Feb 2008 09:53:33 -0800
On Feb 4, 2008, at 5:24 AM, Richard Somers wrote:
I noticed with both of these applications that when switching to
layer-backed mode the pixel format was changed from double-buffered
to single-buffered so I thought that might have something to do with
the slow down. But apparently from John's comment this is how Core
Animation is supposed to work.
CA manages the multiple buffers itself, so each one is single buffered
from OpenGL's point of view.
So here is my question. Is there something inherently inconsistent
with the current implementation of a layer-backed OpenGL view that
will cause a slow down in frame rates when used with some graphics
cards or is this a known issue that is being addressed?
Not that I know of, though I am only familiar with the CA side of
things. Probably the best thing is to file a bug report including the
sample app showing the problem,
John
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