Metal backend: View Port drawing issue with face orientation #108837
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Reference: blender/blender#108837
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System Information
Operating system: macOS-13.4-x86_64-i386-64bit 64 Bits
Graphics card: Metal API Intel(R) Iris(TM) Plus Graphics 1.2
Blender Version
Broken: version: 3.5.1, 3.6-beta, 4.0
Worked: with OpenGL backend
Short description of error
When enabling "face orientation" in the view port the display does not update until I rotate the model. When rotating the model the face orientation colour overlay display is broken.
See attached screen movie showing the issue.
Exact steps for others to reproduce the error
To reproduce:
This was observed using the default startup cube.
Hi, thanks for the report. Does this issue remain in 3.6-beta?: https://builder.blender.org/download/daily/
Do you've "Metal backend" selected?: https://code.blender.org/2023/01/introducing-the-blender-metal-viewport/
Can you replicate this with OpenGL backend?
This seems to be a similar visual artifact to some earlier reports on Macs.
@ReeceRobinson Try switching the graphics backend to OpenGL then restart blender and see if the same artifact exists.
The issue exists in both the 3.6 beta and 4.0 alpha. However, when I switched the graphics backend to OpenGL the issue was resolved.
View Port Draw Issuesto Metal backend: View Port drawing issue with face orientation@Michael-Parkin-White-Apple , can you check?
I'll take a look into this, thanks for the report!
Cannot reproduce on Apple Silicon GPUs, so possibly limited to Intel. Looks like it could be a form of overlay z-fighting, so adjusting depth for affected platforms may be sufficient.