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Viewport Clipping Not Visible in Wireframe Mode
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Description

System Information
Operating system: Darwin-18.2.0-x86_64-i386-64bit 64 Bits
Graphics card: Intel Iris Pro OpenGL Engine Intel Inc. 4.1 INTEL-12.4.7

Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-11 13:50, hash: rB06312c6d2db8
Worked: (optional)

This bug has basically made my blend file unusable. I can't finish the scene because the viewport isn't working properly. The wireframe is fragmented and flashing on and off when I try to orbit the camera. When I go into solid view the objects disappear altogether.

Exact steps for others to reproduce the error

The error is immediately obvious on my machine. Open the .blend file and go into wireframe view or solid view, and see if the objects are visible. This may be specific to MacOS, I don't know.

Details

Type
Bug

Event Timeline

Also, if you could think of any settings I might be able to fiddle with to get my .blend to be useable again, I would greatly appreciate it. Otherwise I'll be forced to recreate the scene again from scratch.

I can confirm on Win 7 that, when opening your file, there is nothing visible in the Layout workspace when shading is set to wireframe and solid. However, the remaining default workspaces display correctly for me in all for shading modes. I deleted the Layout workspace, and then added a new Layout workspace. Everything appears normal in this workspace for me. See my updated version of your file.

The one setting I did notice that was odd to me, was that you had the viewport set to 550 samples, and rendering set to 4. Perhaps this contributed to the issue?

I can confirm that the send file is showing the issue. But in order to fix this we need to know the how to get to this 'corrupted' state in a reproduceable way. Did you know what you did, just before this issue appeared.
I haven't been able to detect the corruption.

Philipp Oeser (lichtwerk) triaged this task as Needs Information from User priority.

Not sure if solved everything described here, but you seem to (accidentally?) used viewport clipping region (ALT+B)
If I open your file and hit ALT+B again everything seems fine...
(this would not really explain the flashing wireframes though...)

But to get us started, I'll wait for an answer if we have visible geometry again...

oh, @Jeroen Bakker (jbakker) was quicker... does ALT+B make a difference for you as well?

We just had an online discussion about the viewport clipping and what we want to change.

  1. Show the viewport clipping in wireframe draw mode. (We will move the current code to overlay_mode.c so the code will be shared)
  2. Automatically turn off viewport clipping when rendering in EEVEE or Cycles.
Jeroen Bakker (jbakker) renamed this task from Wireframe view flashing on and off, solid view completely invisible to Viewport Clipping Not Visible in Wireframe Mode.
Jeroen Bakker (jbakker) claimed this task.
Jeroen Bakker (jbakker) raised the priority of this task from Needs Information from User to Normal.

I can confirm that the new version seems to be working. Thanks, @Evan Wilson (EAW) ! I was also able to fix the issue by starting a new .blend file and just appending the Scene from the previous .blend to the new one.

@Jeroen Bakker (jbakker) I'm afraid I don't know quite what I did before I had this problem. It seemed to happen more or less out of the blue. I think it happened when I was modelling the piece of geometry called "Cube.043".

Also some of the settings such as clipping are strange because I was fiddling around with them arbitrarily trying to fix the issue. Before that everything was basically left at default settings... I can't recall anything else I changed, I was mostly just modelling and doing basic shader and animation work.

As for the low render samples, that was deliberate. I was just using that to get a quick preview render.

@Philipp Oeser (lichtwerk) ALT+B seems to fix the issue as well. It's quite possible I hit that accidentally. I don't know what it does.

Thanks so much for helping, guys!

@Alan Noble (AlanNoble) you can try to load your file with disabled LoadUI option in open screen


on Linux Blender 2.80RC1 after file reload all work fine