Blender freezes when I try to stop the render kernel loading process in the viewport (OptiX backend) #74992

New Issue

Pasang Bomjan · 2020-03-21T09:51:36+01:00

Pasang Bomjan commented

2020-03-21 09:51:36 +01:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.59

Blender Version
Broken: version: 2.83 (sub 10), branch: master, commit date: 2020-03-20 19:52, hash: 9607e54985

Short description of error
Blender freezes when I try to stop the render kernel loading process in the viewport. Then I have to force close it.
Final render is somewhat similar case. When I press ESC, it should cancel the operation all together in my opinion.

Exact steps for others to reproduce the error

Reset to factory settings.
Choose Optix and goto rendered mode in the viewport. Render kernels will start to load.
Try to cancel the process by going to shaded mode or by changing to CPU compute mode or something like that

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.59 **Blender Version** Broken: version: 2.83 (sub 10), branch: master, commit date: 2020-03-20 19:52, hash: `9607e54985` **Short description of error** Blender freezes when I try to stop the render kernel loading process in the viewport. Then I have to force close it. Final render is somewhat similar case. When I press ESC, it should cancel the operation all together in my opinion. **Exact steps for others to reproduce the error** - Reset to factory settings. - Choose Optix and goto rendered mode in the viewport. Render kernels will start to load. - Try to cancel the process by going to shaded mode or by changing to CPU compute mode or something like that

Pasang Bomjan commented

2020-03-21 09:51:36 +01:00

Added subscriber: @Pasang

Bastien Montagne changed title from ~~Blender freezes when I try to stop the render kernel loading process in the viewport~~ to Blender freezes when I try to stop the render kernel loading process in the viewport (OptiX backend)

2020-03-23 10:34:47 +01:00

Patrick Mours was assigned by Bastien Montagne

2020-03-23 10:34:47 +01:00

Bastien Montagne commented

2020-03-23 10:34:47 +01:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Patrick Mours commented

2020-03-23 13:51:24 +01:00

Changed status from 'Needs Developer To Reproduce' to: 'Archived'

Patrick Mours closed this issue

2020-03-23 13:51:24 +01:00

Patrick Mours commented

2020-03-23 13:51:24 +01:00

This is to be expected. Loading the render kernel is one call into the OptiX API and it can take a while to complete (as the status message will tell you). There is no way to abort that because the thread in question does not return back to Blender before it finished (and only Blender will know and attempt to cancel). So while clicking ESC will start the cancelation process, it has to wait for OptiX to return back to Blender before it can follow through. You don't have to force close, you just have to wait for kernels to have finished loading before the cancel goes into effect (then again, this only happens once anyway, kernels are cached for subsequent launches).

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Blender freezes when I try to stop the render kernel loading process in the viewport (OptiX backend) #74992