Ashima Noise External Texture Warp (Composition by gtoledo3)
This is a GLSL shader that is a "texture warp/distortion" effect.
It uses the Ashima Noise implementation that's been kicking around lately, that I particularly like and think looks nice and organic.
I'd used it for generating patterns, but had the idea a month or so ago to use the noise to perturb in input texture - which didn't occur to me at first since the whole deal was that it's a "textureless" noise implementation, but I'm glad it did!
After I had that hanging around for awhile, I decided to add some simple "feedback" loop facilitated lighting, which has a kind of eerie look :-)
I've been able to generate really cool looking abstract landscape type looks by feeding textures that have those kind of colors going on, and macerating the texture to taste. I've also achieved some pretty gross "melting flesh"/"monster" looks as well. I've had some fun with this filter in the past while, and I hope you all do as well. :-)
Go through the "Mode" values to checkout the various basic looks, 4 Modes in all.
"Amount" will increase the amount of the rippling, while "noiseFreq" will tend to increase the density of rippling per area.
"Speed" controls the pace of distortion fluctuation.
"Bump" will do some stuff to the .z channel to mess with the lighting a bit in modes where it's active.
"Spot R1/R2" control the throw of the mouse active light.
"gammaOn/gamma" controls gamma (psonice's gamma code...if it works, why not use it?).
Then there's some color channel offset stuff.
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