Chaos Corona for 3ds Max > [Max] Bug Reporting

Using textures in a UDIM tile set up results in rendering slowdowns

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Njen:
I had an environment that was using a couple of materials with 47 UDIM tile textures loaded in CoronaBitmap loaders piped into a 'MultiTIle' node, and I was experiencing slow render times compared to when I split out the single material into 47 separate materials not using any textures as UDIM tiles. I measured the render times to be 200% - 300% slower using textures as UDIM tiles.

The reason using UDIM tiles are preferable is because they are automatically and easily output by 3D painting apps. Also, obviously, because it's a lot easier maintaining a few materials than 47 of them.

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