Hi, everybody!
Before I start, I specify that I am french, so there will be mistake. Sorry! ^^'
Here's my problem: i've created a light bulb and put a pointlight inside (that was the easy part). In order to have a good glass effect, I've tried several way (mia material with thin glass preset, basic blinn, but the screenshot was taken from the scene with the blinn).
But the thing is that the glass must be dirty: the bottom is so dirty that no light should pass here.
So, I'd like to know how to stop the light where dirtiness make the light bulb opaque.
I tried to put the same texture in the transparency and in the color channel, but it seems like the bulb become completly opaque when other pointlight are in the scene (the shadow from the bulb is entirely opaque).
Caustics and final gathering are activated.
Hope I was clear enought!^^
Thank you very much.
