CoreImage - problems with larger images

FROM : Kenny Leung
DATE : Wed Jul 19 18:52:16 2006

Hi All.

I've been working on a morphing filter for CoreImage, and it seems to 
work great on smaller images, but breaks down with any image larger 
than 10x7. Since there is much I don't understand about CoreImage and 
graphics hardware, I freely admit that it could be my problem, but 
then again, I don't see how. I'm thinking that this might be a bug 
with CoreImage when some limit is reached in texture sizes.

Here is an example of the results on a 10x7 image:

http://www.hexdreams.com/temp/Morph10x7.jpg

Here is an example of a 1280x960 image:

http://www.hexdreams.com/temp/Morph12x10.jpg

Note how the right half of the image is hosed. The blank hole on the 
left half is caused by sampling nothing on the right half.

Any help from the more experienced is greatly appreciated. A sample 
program is available.

Thanks!

-Kenny