renderman shader antialising

#1

Hi guys

I am facing atialising problem while rendering .i am writing a shader that having simple vertical
black lines but when i am rendering ,the area near camera shows jaggy edges . some one please tell me how prefilter antialising code add in to shader.

thanks
Neal

#2

hi neal,

shader antialiasing is an art for itself and it usually cannot be done by some swiss army prefilter antialising code :smiley:

are you using RSL?
how does your code look like? i guess you did your lines with the step funtion. use filterstep instead

grs
Patrik

#3

I think Advanced Renderman has a filteredpulse() function which does what you want. This is a classic case where you get aliasing issues.

Simon

#4

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