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Black splotches in animation

Posted: Wed Feb 18, 2009 3:37 pm
by fabian-pok
Hi,

I rendered an animation with kray 2.0 but it seems to have black splotches in the scene at some frames.

The scene is fully GI baked for all frames... I also tried to render it on a mac, renderfarm and an win2003 but it stays the same... for the same frames.

So...I need a bit of help.

Thx,

Fabian

Re: Black splotches in animation

Posted: Wed Feb 18, 2009 4:17 pm
by jure
It looks like you didn't use enough photons.

Re: Black splotches in animation

Posted: Wed Feb 18, 2009 4:41 pm
by fabian-pok
I'm at 500000 for the caustics and at 3000000 for the photons. Could it be caused by lights in the scene?

Fabian

Re: Black splotches in animation

Posted: Wed Feb 18, 2009 5:18 pm
by Janusz Biela
Check Your resolution GI.
For interiors good is 400 mm (without auto) and for this room enough is 200.000 photons.

Re: Black splotches in animation

Posted: Wed Feb 18, 2009 5:32 pm
by fabian-pok
Okay...

That seems to be the problem, I had to much photons.

Thx Johny!

Grtz,

Fabian

www.postorgasmickitchen.tv
Kray 2.0 + LW 9.6 + 72core renderfarm = 1/10 rendertime

Re: Black splotches in animation

Posted: Thu Feb 19, 2009 4:11 pm
by florian
Last time I had this error I created the GI cache the wrong way.

It should be done this way.
- Set GI Mode to Shared for all frames
- Make sure there is no GI file present
- set mode to update
- set renmderrange and an apropriate framestep an render the animation (you can disable AA for this)
- after the render is done, set mode to load before doing any other renderings
- enable AA, set the framesetp back to 1 and send it to the farm.

Cheers, Florian

Re: Black splotches in animation

Posted: Fri Feb 20, 2009 1:16 pm
by fabian-pok
Hi Florian,

I'm gonna try your sollution. (cause I re-rendered the scene last night on the farm and it had the black splotches again...pfff)

But it meens that if the camera moves in a scene you need to cache-bake some frames to have enough GI-data for the renderfarm? While if you would render it on a single computer the splotches would not appear?

Grtzzz,

Fabian

www.postorgasmickitchen.tv