Aliasing In Procudural Shader

[photex]

Hi folks,

I'm looking for advice on handling the immense amount of aliasing my fishscales shader is capable of. Talking to keyframe on irc helped me out a lot and thanks to this I'm trying to understand how to apply smooth to my shader instead of my basic conditionals.

My shader currently uses: (tt < apt)?colorA:colorB; where apt == abs(sin(radians(s))

smooth returns 0 - 1 so I figure that can drive a color mix, but what is a way to determine a threshold to my abs(sin(s)) shenanigans? Is filterstep related to this?

Any help, comments, jokes, war stories, etc.. all greatly appreciated.

_chip

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I suppose one step might be spelling "Procedural" correctly

Edited July 13, 2007 by photex

[photex]

indeed filterstep was the magic. Someone correct me if I'm wrong but it's like a magic version of smooth where you only need to know the edge/threshold and it works the rest out for you.

so now instead of:

(tt<apt)?colorA:colorB;

I'm doing:

float bias = filterstep(apt, tt, "filter", "box", "width", 2);

vector surfacecolor = vop_colormix(colorA, colorB, bias, 2);

This has introduced some new problems for me though in areas where more than two colors converge in the pattern.

As always, I love advice, ideas, etc..

_chip