pale/dark DR buckets

[vlado]

I think we came to the conclusion that there is a bug in 3ds Max 2014 due to the automatic gamma feature. It generally means that randomly render nodes will load textures with different gamma. For the moment, using VRayHDRI seems to be the safest way to avoid the issue. I'm not sure if it is fixed in 3ds Max 2015.

Best regards,
Vlado

[tashko.zashev]

The same thing with 3DS Max 2015. Using it, I managed to reproduce the gamma issue a few times.

[PIXELBOX_SRO]

so whats the conclusion here then? Also on MAX 2015 and latest official Vray build
We have the same problems :-//
All paths using UNC
Checked ies lights too...
and still were getting randomly lighter/darker buckets over DR

Any solutions guys ?
Were under mega tight deadline so its rather urgent we find some solution to this

[tashko.zashev]

A workable solution for now is to load all bitmaps through the V-RayHDRI node. You can convert all materials very easy with the V-Ray Bitmap to VrayHDRI converter script.

[PIXELBOX_SRO]

thanks for the reply Tashko!
is this going to be fixed in the upcoming Vray SP or is this our "beloved" Autodesk problem???

[Dariusz Makowski (Dadal)]

As stated above I think its AD problem...

[samuel_bubat]

Maybe one should make a sticky post to outline the solutions. there were so many threads about this problem recently.
I recall several reason this problem can happen.

1. Missing assets
2. Domelight
3. Different service packs.
4. 3dsmax Bitmap Loader.

Maybe some of these problems can be tracked back to the bitmap loader as well ?

[tashko.zashev]

thanks for the reply Tashko!
is this going to be fixed in the upcoming Vray SP or is this our "beloved" Autodesk problem???

The problems seems to be in the 3DS Max itself.
There is a the reply from Vlado about this issue - post #76

I think we came to the conclusion that there is a bug in 3ds Max 2014 due to the automatic gamma feature. It generally means that randomly render nodes will load textures with different gamma. For the moment, using VRayHDRI seems to be the safest way to avoid the issue. I'm not sure if it is fixed in 3ds Max 2015.

Best regards,
Vlado

[PIXELBOX_SRO]

unfortunatelly on one of our workstation this VRAYHDRI converter script is missing in the quad menu.
Any idea why? We had installed all the vray instances the same way.
Cheers

[tashko.zashev]

unfortunatelly on one of our workstation this VRAYHDRI converter script is missing in the quad menu.
Any idea why? We had installed all the vray instances the same way.
Cheers

Try to execute : registerVRayMenus() in 3ds Max Script Listener

[PIXELBOX_SRO]

cheers that helped!

[fraggle]

Our problem was cause by different version of vray (2.4xxx vs 2.5).

[Darlene_O]

Can anyone give me a "network rendering for dummies" of the correct steps to fix/check my maps? I didn't understand the last instructions. I don't know about the "V-Ray Bitmap to VrayHDRI converter script". I am getting the darker buckets on my slave machine as well. Can't fix it for many months. Quite desperate at this point.

[tashko.zashev]

Can anyone give me a "network rendering for dummies" of the correct steps to fix/check my maps? I didn't understand the last instructions. I don't know about the "V-Ray Bitmap to VrayHDRI converter script". I am getting the darker buckets on my slave machine as well. Can't fix it for many months. Quite desperate at this point.

First make sure that all of the machines have identical software versions (V-Ray & Max)
Then you can use the following tips to troubleshoot the issue further:
*) Does it occur on a new simple scene?
*) Make sure that the slave machine has access to all assets.In V-Ray 3 you can use Transfer missing maps option. Which V-Ray version you are using?
*) Make sure that the Windows regional settings "Additional settings" "Decimal symbol" and "Digit grouping symbol" have same setup for all machines.
*) If you have any additional plugins on the workstation (for color corrections for an example), they should be also installed on the slaves.
*) Check where the difference comes from. You can try to add several render elements like GI, Lighting, Diffuse, Reflection.
*) Does it occur randomly or on every render with the current scene?

If you post some render examples to see the bucket difference will be helpful as well.