Cycles Glass BSDF broken on GPU #55306

New Issue

omgold · 2018-06-03T15:37:28+02:00

omgold commented

2018-06-03 15:37:28 +02:00

I find that with the current master branch Glass Shaders do not work, but only on GPU. Appearance is mostly black, except for higher IORs (like >2), then something lighter appears, but completely different than with CPU render. I could bisect the bug down to commit 095a01a73a, but I didn't figure out why this change should have an effect only on GPU.

GPU is GTX1080 on Linux 4.16.2 with CUDA 9.2.88.1.

Blend File: glass-test.blend

I find that with the current master branch Glass Shaders do not work, but only on GPU. Appearance is mostly black, except for higher IORs (like >2), then something lighter appears, but completely different than with CPU render. I could bisect the bug down to commit 095a01a73a35d3af57573fc724d381bcca019f54, but I didn't figure out why this change should have an effect only on GPU. GPU is GTX1080 on Linux 4.16.2 with CUDA 9.2.88.1. Blend File: [glass-test.blend](https://archive.blender.org/developer/F3573859/glass-test.blend)

omgold commented

2018-06-03 15:37:28 +02:00

Added subscriber: @omgold

Brecht Van Lommel commented

2018-06-03 16:10:13 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2018-06-03 16:10:13 +02:00

Please use the new bug report template and provide all the requested information:
https://developer.blender.org/maniphest/task/edit/form/1/

Particularly GPU, operating system and .blend file are important.

Please use the new bug report template and provide all the requested information: https://developer.blender.org/maniphest/task/edit/form/1/ Particularly GPU, operating system and .blend file are important.

omgold commented

2018-06-03 17:35:36 +02:00

Okay, sure. Blend file and info OS/Hardware find above. To be precise about versions:

Not working:

Arch distro package 17:2.79.b.git2.0385b33f-15 (Splash screen hash 0385b33f0b)
source rebuild of 815b1f24fa
source rebuild of 095a01a73a

Working:

source rebuild of b3afc8917c

Okay, sure. Blend file and info OS/Hardware find above. To be precise about versions: Not working: - Arch distro package 17:2.79.b.git2.0385b33f-15 (Splash screen hash 0385b33f0b3) - source rebuild of 815b1f24fa298784d9204b9248bc69ceb2b3d762 - source rebuild of 095a01a73a35d3af57573fc724d381bcca019f54 Working: - source rebuild of b3afc8917cdeaa98ebfa3f2aa17e8c5a69fdb1e3

Brecht Van Lommel commented

2019-03-01 05:46:37 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-03-01 05:46:37 +01:00

Brecht Van Lommel self-assigned this 2019-03-01 05:46:37 +01:00

Brecht Van Lommel commented

2019-03-01 05:46:37 +01:00

This should be solved by now, we fixed a bug exactly like this.

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Cycles Glass BSDF broken on GPU #55306