Thanks poopipe . So it should be some per face index like those 1001,1002 stored with the geo or it's still some code to execute during loading or run time that assign per face mat ID based on UV values? I mean if it's in the geo already so why the code? I never heard about storing it in FBX for example.
UDIM is nothing more than a standardised way of organising multiple materials - it has no relation to rendering at all. Any engine that can make use of texture arrays (or equivalent system) can render matching materials with different textures in one batch - any engine that doesn't can't. If you want a UDIM implementation…
Thanks Oglu that's really make sense come to rendering.motionblur said: Thanks for your deep explain motionblur. Now, i know which way is suite for me :) Thanks again