hey people, im working per-pixel lighting with dot3 bump mapping, I'm using Cubemaps, Normalmaps and Decalmaps right now. The result is nice but how would I add attenuation now? The way I have it right now is more like "diffuse per-pixel lighting" meaning that every surface has lighting. The tutorials like ronfraziers or nvidia use a 1D and 2D texture to apply the effect but I don't have a texture unit left to do that.. Ideas :)?

second rendering pass

so i render everything a second time and blend the result?

yeah i think thats pretty much what multi pass rendering is.

whoa I already got it working using 3d texture attenuation, I love the result, and don't tell me not all cards support it, i don't really care since this engine is pretty high end :).

cool, any screens/ source ?

Also for attenuation you can use projective lightning. I've been meaning to try to create complete projective "per-pixel lightning", but never got around to it. I know you don't need any extensions whatsoever for pojective lighting, but i am not sure about speed yet.

http://www.jazzd.de/forums/viewtopic.php?t=16

:D

pretty nice

thanks

Pretty Cool, I finished my DOT3 Bump Mapping few days ago (with some bugs), and working now on the same thing "Attenuation", i don't know if i should do it the old way or with Fragment programs
Care to share the Source code?, it might help me clarify some bugs in my code