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cdinic
08-24-2002, 12:38 PM
Just finished a 27hour! render of 500 frames and I can't use it! I think tere might be a way to salvage them but I need soem help.

problem: I did nt set up a background plane, instead I only have a ground plane with render scale set to 10. everything was fine untill I noted that my volumetic lights basicly dissapear against the transparent background!!!!!

I renderd to RPF

I imported into combustion, and rendered out a frame to a targa. the result is posted below after being converted to a jpeg.

I tried copying the layer multiple times to build up the effect of the lacking top half of volumetric lights but that did nothing.

I fear the only solution will be re-rendering everything! unless I could possibly render out the eviornment element alone. With a black background plane of couse, then composite it ontop of the old and sick render.

is that possible?

any better solutions?

Thanks a million!!!

-Chris
Marcel
08-24-2002, 01:32 PM
Can't you render out the volumetric lights with all the objects having black materials? That would give you a layer with the lights only. (And the volumetric lights would dissapear correctly behind any geomerty)

For other effects you can render a seperate alpha pass manually. Use a white 100% self illumination material, and black materials..
cdinic
08-24-2002, 01:40 PM
although this does work, it takes about 1min 30sec per frame. still a large undertaking... I think this is going to be the only solution, but any other ideas would be greatly appreciated

Thanks marcel!

-Chris
Marcel
08-24-2002, 07:08 PM
Are you rendering new alpha maps, or rerendering the volumetric lights?

If you are rendering new alpha maps:
- Have you deleted all the lights?
- You can turn off mapping and 'filter maps' at the render dialog for a little speed boost.

The volumetric lights will take some while, I can image that.
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