Hello,
Maybe my question is not really related to the HOpenGL library in
particular, but more general a MacOSX+OpenGL problem. I hope some of
you guys recognize this issue.
It seems there is no way to get the accumulation buffer to work
efficiently on MacOSX. Using this buffer to implement a neat motion
blur slows down the framerate to less than 8 fps on my machine. A
brand new Macbook with the newest NVIDIA GeForce 9400M running a very
simple demo with just one 3D torus.
I am using this initialization code:
> initialDisplayMode $= [
> ...
> , WithAccumBuffer
> ]
>
> initialDisplayCapabilities $= [
> ...
> , Where DisplayAccA IsEqualTo 8 -- Also tried 1, 16, 24, 32...
> ]
And use the buffer like this:
> withMotionBlur comp = do
> accum Mult 0.95
> comp
> accum Accum 0.05
> accum Return 1.2
The result looks verry pretty but is terribly slow.
Is there someone how has ever used the accumulation buffer on MacOSX
without experiencing slowdowns?
Thanks,
--
sebastiaan
