OTOY Forums

Hi all,
it seems there's definitely something strange with emitters.
Look at this pic, as you see emitters must be transparent in order to see some light. This is because they are flipped, so actually thwey cast light upwards and light you see is bounced. If i set opacity to 0 you sdee no light and emitters are just diffuse. If i flip normal nothing happens. If i opne obj, flip emitter's normal and reload scene, nothing happens.
Can someone please tell me if emitters still have troubles ? reading forum i didnt see any mention of major bugs like the one i'm experiecing so i'd like to know your opinion.

thanks again,
Paolo

Why don't you use blackbody instead of texture emission and play with temperature? Also there you will see normalize switch, so any problems with normals will be fixed easy with one click..

In general, when I play with emitters, I set the power of environment at 0, play with the tone-mapper until I get the correct exposition for the emitters and then rise again the power of environment accordingly.
Hope it help
ciao beppe

Hi all,
BTW before posting i tried all emitter's types, but no light.
Anyway irt seems i solved the issue in a strange way, maybe it's a bug on OBJ exporter: in LW, i flipped emitter's normals so they face upwards. Doing this, lights work nicely but i'm sure flipping normals to the wrong side before export is not the way it's supposed to work
I'll link this thread in LW plugin too, maybe it's useful to fix it.

Paolo

just revers them

bepeg4d, just as i wrote: i had to reverse them to get correct light.
I dont think it's the way it's supposed to work...

Paolo

Hi Paolo,
sorry but I work with cinema 4d and there is not this kind of problem with emitters, maybe it's a LW exporter problem
anyway in this thread I don't speak about normal directions but about playing with exposer and gamma
ciao beppe