Resizing the Blender Window causes the interface to disappear #109739
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Reference: blender/blender#109739
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System Information
Operating system: macOS-13.4.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Pro 1.2
Operating system: macOS-12.6.3-x86_64-i386-64bit 64 Bits
Graphics card: Metal API AMD Radeon Pro 455 1.2
Blender Version
Broken: version: 3.6.0, branch: blender-v3.6-release, commit date: 2023-06-27 08:08, hash:
c7fc78b81ecbBroken: 3.6.1, 4.0.0 (Metal)
Worked: OpenGL
Short description of error
When resizing the Blender window the whole UI goes blank.
Exact steps for others to reproduce the error
See
resizing-window-interface-disappear.mov.Original report
No on any one project, and doesn't always happen immediately.
Literally resizing the window nothing else. I do have magnet installed for windows management, that wasn't being used in this instance.
I have a multi monitor setup, 3440x1440, 2560x1440 and the MacBook's internal display active.
Once in this happens the UI has only reappeared once so far and requires Blender to be closed and relaunched.
I had OBS open at the time, I don't have to be recording for the incident to happen.
Hi, thanks for the report. Does this happen with both viewport backends? (OpenGL/Metal)
Thanks for getting back to me, currently the GPU back end is set to Metal.
I shall switch it to OpenGL and will get back to you if it happens again.
Hi, any updates?
poke
Also check whether it persists in 3.6.1/4.0: https://builder.blender.org/download/daily/
@PratikPB2123 I have the same bug. I've updated the description.
Thanks @jenkm :)
@Michael-Parkin-White-Apple , can you check?
Thanks @PratikPB2123 I can have a look into this.
I am encountering the same bug. #114192 might also be related?
Hi, I had the issue again with 4.0.1 but 4.0.2 I haven't seen it again- I moved back to my Windows machine for some time.
I also don't see GPU Backend as an option any more so cannot switch between them for testing. I presume this is now a commandline toogle or deprecated?
On MacOS, OpenGL backend is removed in 4.0
I can test. It still occurs on the latest 4.2 alpha (2024-03-06 23:19, hash:
66187559126b)This is easy to trigger and important too. So I'll raise the priority for attention.
Has taken a while for me to be able to reproduce this, but the issue occurs because GPU_context_activate and GPU_context_deactivate stop being called on a frame-by-frame basis. The Metal backend had been relying on this phase for fetching the resized backing window buffer information from the context.
Next step is to determine why context activation and deactivation is not happening. Perhaps for a case where there is only a singular GPU Context present.