Maniphest T88506

Twitchy behavior in Eevee during walk/fly mode.
Closed, Duplicate

Assigned To
None
Authored By
StrictlyIncreasing (StrictlyIncreasing)
May 23 2021, 5:56 PM
Tags
  • BF Blender
Subscribers
Firepal64
Germano Cavalcante (mano-wii)
Himanshi Kalra (calra)
StrictlyIncreasing (StrictlyIncreasing)

Description

System Information
Operating system: Linux-5.8.0-53-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: AMD RAVEN (DRM 3.38.0, 5.8.0-53-generic, LLVM 11.0.0) X.Org 4.6 (Core Profile) Mesa 20.2.6

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-05-22 04:53, hash: rBf7b22fc3d271
Worked: (newest version of Blender that worked as expected)

Short description of error
First and foremost i must give a epilepsy WARNING - IF YOU ARE SENSITIVE TO FLASHING LIGHTS DO NOT TRY OUT THE STEPS BELOW.

If you activate walk/fly mode while in rendered mode and there is volume object in the scene the object will exhibit a weird twitching behavior even if you remain still i.e do not use your mouse or keyboard after activating walk/fly mode.

Exact steps for others to reproduce the error

  1. Delete cube.

2)Add Suzanne monkey
3)Add a empty volume object
4)Add a Geometry node modifier on the volume object.
5)Add a 'Points to volume' node in the modifier
6)Add a object info node and select Suzanne as the target.
7)Connect the 'geometry' socket of the newly added object info node into the points to volume node.
8)Switch to rendered mode

  1. Go into walk/fly mode, by default the hotkey is shift + ~
  2. Observe a weird blinking/twitching behavior.

A similarish behavior can also be observed with soft shadows.

Event Timeline

StrictlyIncreasing (StrictlyIncreasing) created this task.May 23 2021, 5:56 PM
Firepal64 added a subscriber: Firepal64.May 24 2021, 11:26 AM

Lemme guess. T80871 duplicate?

Himanshi Kalra (calra) changed the task status from Needs Triage to Confirmed.May 24 2021, 2:25 PM
Himanshi Kalra (calra) added subscribers: Germano Cavalcante (mano-wii), Himanshi Kalra (calra).

Thanks for the report @StrictlyIncreasing (StrictlyIncreasing)

I can confirm the issue on Windows 10 as of latest master 7e841c797

I do feel the issue is a duplicate of T80871 as rightly pointed out by Firepal. The steps in this report are detailed enough for me to reproduce the flickering comparing to the original report.
Will let @Germano Cavalcante (mano-wii) double check the duplicates.

Germano Cavalcante (mano-wii) added a comment.May 24 2021, 6:15 PM

Nice finding. In fact, it is a duplicate of T80871, so I will merge the reports. (This one can still be consulted).
Here is a file for simpler steps to reproduce the error: