Mesh as Light?

[Atom]

Hi All,

I am trying to convert a Lux based scene to RenderMan based scene. I
am using Blender 2.49.2 and Mosaic 0.43 ans Aqsis 1.5 (recent build).

Is there a way to make a mesh become a light in renderman?

What kind of shader does that in Mosaic?

[>WHiTeRaBBiT<]

Hi Atom,

AFAIK only 3Delight and Air support mesh based area lighting. In order
to use this you'll need an area light shader and then attach it to the
"Area Light Shader" menu in the "Materials Setup" tab in MOSAIC. I
believe 3Delight has a arealight shader that comes with it you could
use, also you may have to make a code fragment and attach it to the
scene to define the quality vs speed for it. The other option is to
fake an area light with indirect diffusion maps in Aqsis but there are
still several bugs that still need to be fixed in Aqsis before I can
demo that technique :-/ The last option is to just use a shadeless
material and put a soft light with maybe a projection to fake it (old
school style).

BTW good luck on the translation from Lux, I originally heard that Lux
was using RIB so looked into adding it to MOSAIC's preset list but it
turned out it uses a completely modified version of RIB (so different
there's no easy way to port it). Let me know if you discover some
trick or option in Lux that makes it RIB compatible and I'll look at
adding it again ;)

Eric Back (WHiTeRaBBiT)

[Atom]

Thanks for the reply.

Fortunately I still have the Blender scene, so I had planned on using
Mosaic as the converter. But I still need to map the textures inside
Blender from the Lux format to the Mosaic format.

I guess I'll take another look at 3Delight. I was hoping Aqsis would
come up to speed quickly, but I guess that is not the case.

On Aug 8, 11:36 am, ">WHiTeRaBBiT<" <whiterab...@dreamscapearts.com>
wrote: