The convolution filter rocks, but it can be a little slow, it would be cool if there were some preset convolutions that were hard-coded for optimisation. That way common convo's like gaussian blurs, emboss etc... would be nice and fast.
I appreciate that this is an APE we're talking about so perhaps it should be a request directed to Tom Holden.
Additional Convolutions
4 posts
Try to divide all filters by multiples of 2. Also, there is a convolution pack somewhere. It showed how it works and quite a few useful and fast example filthers.
I think your missing the point, hard coded convolutions using code optimisations and hacks would be much much faster.
...not to mention that avsmandan's tip was wrong... it is not multiples of 2 but powers of 2 (i.e. 1, 2, 4, 8, 16, 32...)