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PercyPea, thanks I read your comments before and looked at your example - but altering the masks is a 2D distortion effect not a pseudo 3D displacement map - i.e. it has no interaction with the 3D...

AndreMichelle, wondered if you gave any thought to bumps on your engine? I'm convinced there must be a way to do it but that eureka moment is escaping me.

My understanding is that to do a bump map properly you need to scan all rendered points and adjust their Y displacement from a reference bump map (plus apply perspective scaling). Storing and...

Excellent thread, great ideas, great code, great explanations.

I've experimented with some bump mapping (and reverted to Flash5 in the process because I'm antiquated like that):

BodBod's...