Every material producing an overbright error

[snivlem]

Hi, when I put V-Ray into Fly-Through mode with incremental add to current map, this happens in the outliner:

[2013/Apr/11|09:24:39] V-Ray warning: Material "P11_VRAY@material" produced overbright or invalid color (rgb=-1.#IND00 -1.#IND00 -1.#IND00).

Every single material in my scene generates this error so I'm getting hundreds of lines of errors and V-Ray fatal crash during batch. Its an outdoor scene so I've only a sun + sky setup in this scene, no other lights.

The scene renders perfectly normal without issue with just regular single frame mode.

As a workaround, would putting the Light Cache in Single frame mode, then ticking "Use Camera Path" be a good workaround?

[2013/Apr/11|09:06:12] V-Ray: V-Ray for Maya version 2.25.01, revision 22828 from Mar 23 2013, 02:44:45
Maya 2013.5x64

[yolov]

Hi,

I only managed to get a fatal error with that particular build, no overbright colors and no batch mode. It doesn't seem to happen with the latest nightlies for 2013.5 however. It would be helpful if you could describe briefly what materials you have in the scene or if you could send us a scene.

[snivlem]

Hi Yolov,

They are all standard V-Ray Mtl with jpgs, tiffs etc and a sun + sky setup.

Really nothing special - although there is V-Ray fur referenced into the scene (with VRayMtl assigned). I have found V-Ray Fur to be the cause of this problem many times in the past now that I think of it but that was usually when it had a 2 Sided material assigned to it.

Unfortunately this is a very, very big scene with many Maya Assets so I cannot send it in. After production if you guys are not able to reproduce I could see if I can do this.

However, it's okay though as a workaround I just chose to set Light Cache to "use camera path" and I turned off "Fly through" mode and the errors go away and the scene renders just fine.

[Svetlozar Draganov]

Hello snivlem

Thank you very much for the feedback.
It would be very helpful for us if you provide us a sample scene , you could use the same scene replacing your objects with simple primitives likes cubes,spheres etc.

[snivlem]

Unfortunately I do not have the time to do this, but have narrowed it down to "Fly Through Mode' in the light cache. Seems to affect several builds and happens on different scenes.

For some reason VRay builds a corrupt Light Cache, because when I freeze it, it'll still produce overly bright script errors, only way to fix is to not use "Fly Through Mode".

After production I can see if I can make a scene and I'll post here.

[yolov]

That would be very helpful for finding out what causes this. Will wait for whenever you get the time to do so.