I haven’t seen this for quite a while, but I am getting some buckets on a DR rendering with the correct texture, but they are a lot darker than the others (the bright ones are correct). The bitmaps are on a shared network drived and they are mapped indentically on each render node and on the host workstation.
This is with Vray 1.50.00 on Max8 SP3.
I had always thought that this was due to one of the rendernodes not connected to the network properly, but in this instance, they are seeing the bitmaps OK (on the mapped ‘resource’ drive) and seeing the scene OK (on the mapped ‘work’ drive) and getting instructions to render OK.
This is very strange. The bitmap used where the buckets render dark is situated on our ‘work’ drive in the project folder I am working on as it is a project specific bitmap.
If I copy this texture (a .png file) to the ‘resources’ drive where the vast majority of our textures are and in material editor select to use the bitmap from this new location, it looks dark, but if I switch back to the ‘work’ drive location, it goes bright - and this is just in the material editor! Its the same darn bitmap!
I’ve had this problem as well and it turned out that I was running VRay 1.5 RC2 on one system and RC3 on another.
But I doubt that that’s the problem… (although you never know )
I think I have a poltergeist! Now the problem seems to have gone away!
Basically, I think Max may have been getting confused with the gamma on the bitmaps - I told it manually when picking from either the ‘work’ drive or the ‘resources’ drive to use the default system gamma (which is 2.2 for bitmaps) and it brings them both in the same now (even if I put it back to using the ‘images’ gamma).