Cubic mapping / BUMP causes bug when scaled

[LeSill]

Hi,

Please view the attached pictures. I created two cubes and one material, which included an albedo map and a BUMP map. One cube's material tag projection is set to UVW mapping, while the other's is set to CUBIC. I adjusted the UVW mapping's Length U to fxp 20% and then scaled the CUBIC mapping to 20% using the TEXTURE tool. The cubic mapping produces a glitch. It's caused by BUMP. When I turn it off, the albedo map is fine. Please solve this bug as soon as possible.

Many thanks

[burnin]

Hmm, can't replicate this either...

[LeSill]

Perhaps that is a bug in my Cinema. Please try to open the file I have attached here. There's an albedo map and a problematic BUMP map. You should encounter the bug there. There could be a relation with the option "Use UVW for bump".

[LeSill]

Did anyone test the file? It would be helpful to know whether the issue is with the Cinema installation or the Corona plugin. Many thanks for any response.

[burnin]

Try latest daily, as bump bug 's been squashed.

[bnji]

Hello LeSill,


Thank you for bringing this to our attention.
Like @burnin, I've tried reproducing this but haven't had luck so far.
I tested this using the Corona 9 version and up to Corona 12 hotfix 1 + Cinema 4D R23 and up to Cinema 4D 2024 version.
For each testing scene, the result was the same: the stretched texture remained the same, and the object using the UVW Map remained the same (no change, no difference between rendered images, no crashes)
I used a basic test scene created from scratch and also tested the scene project you provided.
This is a very odd situation/case.
I'm curious to know if there's anything different on your C4D version that might be causing this.
Could you please try uninstalling C4D and Corona, cleaning any leftovers from both, then clean install both software and try again to see if the issue persists?
Looking forward to hearing from you soon.