Bump maps on refractive materials dont render on back side.

[Jpjapers]

If i apply a bump map to glass on a single face and look at it from the back the bump doesnt render if refraction is enabled and not 'Thin'

Scene and images attached

[Dung (Ivan)]

Hi jpjapers,

we've been able to reproduce this. We'll see what we can do about it :) I'll let you know the moment some new information is available.

Thank you for reporting this.

[Jpjapers]

Hi jpjapers,

we've been able to reproduce this. We'll see what we can do about it :) I'll let you know the moment some new information is available.

Thank you for reporting this.

Cool thanks :) Are you a new team member?

[TomG]

He's new-ish :) He's in the Company News (https://corona-renderer.com/blog/corona-renderer-2-for-3ds-max-released/) welcoming all the new coronauts to the team, "Ivan: QA specialist (better make sure you write good bug reports)" ;)

[Jpjapers]

He's new-ish :) He's in the Company News (https://corona-renderer.com/blog/corona-renderer-2-for-3ds-max-released/) welcoming all the new coronauts to the team, "Ivan: QA specialist (better make sure you write good bug reports)" ;)

Keen haha

[maru]

Workaround - use the multimap to texture different material IDs with different maps.
I do not however see any reason why this should not work with multi/sub-object material, so I would consider it a bug.
Additionally, the refraction gets all messed up when using multi/sub-object material, but I think this is a known "light transport" issue.

[Jpjapers]

Workaround - use the multimap to texture different material IDs with different maps.
I do not however see any reason why this should not work with multi/sub-object material, so I would consider it a bug.
Additionally, the refraction gets all messed up when using multi/sub-object material, but I think this is a known "light transport" issue.

For now i just rotated the second pane of glass to face inward so i still see the bump :)