Weird cycles render glitch #63441

New Issue

Everton Schneider · 2019-04-09T23:01:17+02:00

Everton Schneider commented

2019-04-09 23:01:17 +02:00

System Information
Operating system: Linux-4.18.0-17-generic-x86_64-with-Ubuntu-18.10-cosmic 64 Bits
Graphics card: GeForce GTX 980 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 415.27

Blender Version
Broken: version: 2.80 (sub 55), branch: master, commit date: 2019-04-09 10:54, hash: 32f3d47990
Worked: Master 2.80 builds from 2019-04-06

Short description of error
It's hard for me to describe since I don't have any clue... But what I can say is that in viewport I can see the animation is ok, the boolean modifier is working and everything updates as expected but when I change to render mode the chocolate egg jumps to I don't know exactly where... It seems that the rim vertices from solidify stays in place but the other vertices go crazy...

Exact steps for others to reproduce the error

Just open the attached file(It's a final production file without textures) and playback the animation, everything is ok...
Change to render mode or just hit F12 and you will see the glitch.

Dinheiro_Ovo_REPORT.blend

**System Information** Operating system: Linux-4.18.0-17-generic-x86_64-with-Ubuntu-18.10-cosmic 64 Bits Graphics card: GeForce GTX 980 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 415.27 **Blender Version** Broken: version: 2.80 (sub 55), branch: master, commit date: 2019-04-09 10:54, hash: `32f3d47990` Worked: Master 2.80 builds from 2019-04-06 **Short description of error** It's hard for me to describe since I don't have any clue... But what I can say is that in viewport I can see the animation is ok, the boolean modifier is working and everything updates as expected but when I change to render mode the chocolate egg jumps to I don't know exactly where... It seems that the rim vertices from solidify stays in place but the other vertices go crazy... **Exact steps for others to reproduce the error** - Just open the attached file(It's a final production file without textures) and playback the animation, everything is ok... - Change to render mode or just hit F12 and you will see the glitch. [Dinheiro_Ovo_REPORT.blend](https://archive.blender.org/developer/F6923702/Dinheiro_Ovo_REPORT.blend)

Everton Schneider commented

2019-04-09 23:01:17 +02:00

Added subscriber: @EvertonSchneider

Everton Schneider commented

2019-04-09 23:10:23 +02:00

After some more tests I think I found where the bug is... When I disable the "Auto Smooth" option under mesh property panel the glitch is gone and everything works fine like in the workbench engine... I still don't understand it since I'm not a developer but I know that it's related with "auto smooth" option.

Sergey Sharybin self-assigned this 2019-04-10 09:35:06 +02:00

Sergey Sharybin commented

2019-04-10 09:35:42 +02:00

Can not confirm the issue yet, but see some assert failures which might be affecting on it.