Surface Brightness not working?

[mtb_mike]

Hey there. I'm curious as to what the surface brightness option inside the texture emission shader does? My thought (hope) is that disabling it would keep my object (a tv screen in this case) from blowing out when I crank the power up. Doesn't seem to do that. This is of course in the emission channel on a diffuse material.

Hope this makes sense. Oh yeah, I'm working inside C4D, not the standalone.

Thanks for any help.

Win 7 64 | Geforce GTX970 | i7 4790k| 16GB | C4D

[itsallgoode9]

surface brightness keeps the output of the emitter the same independent of scale. I haven't used it, so I can't tell you exactly how it works but if you have this turned off when you scale up the emitter, the brightness of the emitter will dim because it is the same amount of energy spread across more surface area.

[mtb_mike]

So thats what it does. BTW, how did you know this. I don.t see anything in my Cinema 4D docs. Maybe the standalone docs are something to check out?

Thanks for help!

[itsallgoode9]

it's something the added in one of the 2.x version updates but I don't remember when it came in. I don't think there's any documentation for it other than discussion/explanation on the forum. Do a search and you should be able to find a little bit of info about it.

[abstrax]

http://render.otoy.com/manuals/Standalo ... age_id=390