Im a (Very) new VRay user :
What’s the way to turn an object into a lighting object ?
I wan’t to do a colored neon, red at one end and green at the other…
I tried :
- turning the material self-illum
- increasing RGB output of the self-illuminated diffuse
- increasing “generate GI” in VrayMtlWrapper’s mat.
No way, the objet does not really generate light but only transmit it.
Thanx to all.
Re: True lighting objects
Well, it’s the way, I think, but:
Try to REALLY increase output value to, say, 50, and you will start to see the difference…
And render the image with GI turned one, of course.
Regards,
Joao.
Don’t forget to check the box beside the self-illum color swatch at the top.
--Jon
i think the size of the object also affects the light. i remember putting an output of 50 on a small light bulb in a room, and it lit the equivalent of maybe 3 feet in each direction. i had to add another GI bounce and increase the output value to like 100, but then i got a burning hot spot where the light bulb met the wall. in the end i had to fake it with an omni light and turning the light bulb’s shadow casting off.
but then when i applied the original light material (with output = 50) to the ceiling of the room, everything was well lit.
Did you try putting an actual “output” map in the self-illum rollout? Not just adjusting the self-illum level.
SunnyC
just like egz i should point out that this is not the place for this post.
Thanx everyone for the advices.
You’re right, it seems objects can behave like lights using one of those two ways :
- Increasing “output amount” of diff material
- Adding VRayMtlWrapper with increased “Generate GI”
Results are the same…
Fabrice
2 techniques for lighting objects…
Precising my last post …
The 2 techniques don’t act the same,
Here’s a image of 2 teapot :
on the left auto-illum gradient ramp with output amount on 30,
on the right a VRayMtlWrapper with the “Generate GI” on 15.
The 2nd seems to act more real…
Fabrice
interesting results, I woner witch one acts more like a neon light? I’d be guessing the right, the way the light overlaps each other.