VrayDisplacementMod

[andyp7]

Hi guys,

I have a VrayDisplacementMod on a piece of editable poly, when its in 2D mapping mode, i get about 2000 warnings: "invalid geometric normals" and "texture derivatives".

Now, I have done a search on here and I have messed about with the file to try and get it to work but I am still getting the warnings.

Does anyone know how to fix this? I would normally ignore warnings, but this is an animation so I dont want the 3000 frames to each have 4000 warning messages.

Thanks in advance.

[studioDIM]

if it's just ignoring the messages what you're looking for, just set the vray log file name to none (empty the field, simply) and the log level to 1.

Lele

[andyp7]

I did that, but i was concered it was slowing my render times down. Is this the case?

[studioDIM]

I doubt it does, at least by much.
But i haven't got proof of that...


Lele

[Candelero]

@ andyp7

Can you please show us that model (the displaced one) in WIRE, as having those warnings is not accidental.

Best regards,
nikki Candelero

[andyp7]

Candelero: Here are the screens:





thanks

[baumgore]

Hi,

put a subdivide modifier on it, VRayDisplace sometimes does not like too big faces (VrayFur behaves the same). I also have here scenes which renders faster with Subdivide put on certain objects. Sometimes this modifier is the magic "make all render better, don't let me switch back to sloppy Scanliner" sort of thing. But be carefull, don't subdivide the meshes too small, or you will get even longer render-times.
Hope this helps.

[andyp7]

thanks for the advice, i shall give it a whirl.

[Candelero]

Yes, the problem is actually your geometry topology.
It is recommended that you subdivide the polys. Also keep in mind, it would
be very good if they all are quads for better tesselation.

Best regards,
nikki Candelero

[andyp7]

hey guys,

I tried what you suggested and it makes no difference, to test it I made a box in my scene and added the modifier and it get the same warnings.

Any other ideas?

[andyp7]

Okay, I worked it out. Its the mapping I have used, I used a planar mapping and then uvwunrap. If I add a UVW map mod and then use box mappping it works fine. Which fixes my problem but now I have to remap it all