Bump maps on refractive materials dont render on back side.

[jpjapers_1]

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
glasstest (2).zip (4.69 MB)

[quangdung_lang]

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_1]

@Dung

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?

[tom_grimes]

He’s new-ish He’s in the Company News (3D Rendering Blog for ArchDesign, ArchViz, Media & Entertainment | Chaos) welcoming all the new coronauts to the team, “Ivan: QA specialist (better make sure you write good bug reports)”

[jpjapers_1]

@TomG

He’s new-ish He’s in the Company News (3D Rendering Blog for ArchDesign, ArchViz, Media & Entertainment | Chaos) 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_1]

@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.

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