Show Posts
1
Graphics / Looking for a nice variable sigma gaussian blur shader
« on: January 12, 2017, 02:27:01 am »
For my project I need a blur shader. It has to have per-pass adjustable intensity in very wide range (sigma from 1 to 500) and becouse of some deeper mathematical reasons I would really prefer to have gaussian blur (well, discrete approximation of one) with actual sigma as control parameter.
I don't have enough experience to generate proper weights and pass them to a kernel yet. For now I am using crappy approximation of two passes of a moving average but it's very far from perfect.
I feel like this is such a standard problem that somebody must have had written it before and probably posted somewhere over the internet. If you happen to have such a piece of code stashed somewhere, it would be wery helpful if you've posted it to me or pointed in the right direction.
I don't have enough experience to generate proper weights and pass them to a kernel yet. For now I am using crappy approximation of two passes of a moving average but it's very far from perfect.
I feel like this is such a standard problem that somebody must have had written it before and probably posted somewhere over the internet. If you happen to have such a piece of code stashed somewhere, it would be wery helpful if you've posted it to me or pointed in the right direction.