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Maniphest T76171

Eevee bsdf shaders glitches
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Description

System Information
Operating system: Linux-5.4.0-26-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: AMD STONEY (DRM 3.35.0, 5.4.0-26-generic, LLVM 9.0.1) X.Org 4.5 (Core Profile) Mesa 20.1.0-devel (git-8faa0e2 2020-04-27 focal-oibaf-ppa)

Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: rB375c7dc4caf4
Worked: (optional)

Short description of error
Eevee bsdf shaders glithces when rendered and in viewport

Exact steps for others to reproduce the error
with basic startup assign a material on the cube and add to volume setting some of the bsdf effects and it appears as a smokey green pixelated curtain front the object, more like an artifact

additional: recently i upgraded to ubuntu focal fossa 20.04, but i can't directly relate this issue with this because the last version of blender i used before this doesn't included eevee engine

Revisions and Commits

rB Blender
rBe2e9df1520fb EEVEE: Fix undefined behavior when using BSDF nodes inside volume shaders
rB062a843bfbe7 EEVEE: Fix undefined behavior when using BSDF nodes inside volume shaders

Related Objects

Event Timeline

Ariel Leonardo Argüello (arieleoar) created this task.Apr 28 2020, 4:41 AM
Ariel Leonardo Argüello (arieleoar) added a comment.Apr 28 2020, 4:47 AM

System Information
Operating system: Linux-5.4.0-26-lowlatency-x86_64-with-glibc2.29 64 Bits
Graphics card: AMD KAVERI (DRM 3.35.0, 5.4.0-26-lowlatency, LLVM 9.0.1) X.Org 4.6 (Core Profile) Mesa 20.1.0-devel (git-bf3c9d2 2020-04-25 focal-oibaf-ppa)

Blender Version
Broken: version: 2.82 (sub 7), branch: Unknown, commit date: Unknown Unknown, hash: rBUnknown
Worked: (optional)

reproduced in a desktop pc, same result, also with 20.04 focal fossa

same process, added a bsdf effect on volume and the same result appears{F8498429}

Evan Wilson (EAW) added a subscriber: Evan Wilson (EAW).Apr 28 2020, 6:27 AM

Picture from above:

Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).Apr 28 2020, 7:23 PM

Could you provide a simple .blend file demonstrating the problem?

Richard Antalik (ISS) changed the task status from Needs Triage to Needs Information from User.Apr 28 2020, 11:08 PM
Ariel Leonardo Argüello (arieleoar) added a comment.Apr 29 2020, 2:38 AM

yes, there is the .blend file and a screen video capture

basic-setup.blend549 KBDownload

Ankit Meel (ankitm) added a subscriber: Ankit Meel (ankitm).May 6 2020, 3:22 PM

a lot of volume shaders cause such glitch. glossy BSDF, glass BSDF, velvet BSDF, translation BSDF, Toon BSDF, subsurf scattering,


principled volume:

In 2.82a:

System Information
Operating system: Darwin-18.7.0-x86_64-i386-64bit 64 Bits
Graphics card: Intel(R) HD Graphics 6000 Intel Inc. 4.1 INTEL-12.10.12
rBc0bbf1553f680dbcc67022d1e8b1d16dc2f3a5eb

Ankit Meel (ankitm) changed the task status from Needs Information from User to Confirmed.May 6 2020, 3:26 PM
Ankit Meel (ankitm) added a project: EEVEE & Viewport.
Clément Foucault (fclem) closed this task as Resolved by committing rB062a843bfbe7: EEVEE: Fix undefined behavior when using BSDF nodes inside volume shaders.Jun 30 2020, 1:32 AM
Clément Foucault (fclem) claimed this task.
Clément Foucault (fclem) added a commit: rB062a843bfbe7: EEVEE: Fix undefined behavior when using BSDF nodes inside volume shaders.
Jeroen Bakker (jbakker) mentioned this in T77348: Blender LTS: Maintenance Task.Jun 30 2020, 5:28 PM
Jeroen Bakker (jbakker) added a commit: rBe2e9df1520fb: EEVEE: Fix undefined behavior when using BSDF nodes inside volume shaders.Jul 13 2020, 5:15 PM