Hello community,
for some fancy FX routines I lately tried to come up with a fast 16 bit 2d box filter blur. After some research I ended up with this article:
Some here...
It explains how to achieve a fast 2d box blur by applying a horizontal and a vertical blur consecutively.
So much for the theory. I wrote a straight forward version using the same technique for each color component and I must confess it's already
painfully slow on my 206Mhz ARM CPU, probably for caching reasons.
Is anyone interested in helping me optimizing the provided technique to 16 bits?
I really need some fancy ideas.