Displacement texture UV overrides diffuse UV (bugged) Tweet

[rubberchicken]

I have a mesh with two UVs, one is used for the general texturing and one is used for the graphics. They are named correctly and mixing both as diffuse maps works as expected. However, when I plug the graphics map into texture displacement the other general texture images assume the UV used for the displacement. This seems quite similar to what you see in the Modo viewport where it can only display using one UV.

[face_off]

Hi

I vaguely recall that displacement mapping will only work on the 1st UV map for the mesh (this is an Octane limitation). Does that answer your question? If not, can you send me a scene which shows this issue please?

Thanks

Paul

[rubberchicken]

I can confirm that the displacement was working in the above scenario, but it was changing the UV of the diffuse to the one it was using. Indeed the displacement was in the second slot as far as the Modo naming went. I swapped the vertex maps contents so that the displacement was in the first listed and diffuse in the second. Displacement worked as before but the diffuse now uses the correct UV. Pretty inconvenient behaviour. I'm used to working with a very flexible UV system I guess. This scenario would be a pain if you had a large scene and decide you want to add a displacement texture on something, you have to rename and order every texture in the scene unless you had already named things in a way that displacement UV would list first. Or if you are bringing in assets from third parties or other jobs.

[face_off]

I can confirm that the displacement was working in the above scenario, but it was changing the UV of the diffuse to the one it was using.

Would it be possible to send me a sample scene showing this so I can get a better understanding of what is happening please?

For reference, the manual has some information on this at https://docs.otoy.com/ModoH/ModoPluginManual.htm#Modo/MesheswithMultipleUVs.htm although it does not cover the specific limitation when working with Displacement maps. There is also some information at https://docs.otoy.com/StandaloneH_STA/StandaloneManual.htm#StandaloneSTA/TextureDisplacement.htm

Thanks

Paul

[rubberchicken]

Ah sorry I forgot to subscribe to the topic again. This forum software.

I'd already read up on the multiple UV workflow which is a pain but I get it. This seems a different issue though. Happy to send the scene... what's the process for that?

[face_off]

I'd already read up on the multiple UV workflow which is a pain but I get it. This seems a different issue though. Happy to send the scene... what's the process for that?

PM the scene to me here via the mail icon under my photo.

Thanks

Paul