Metal Viewport: Navigation issue with 'Auto Depth' and 'Wireframe' enabled #107159

New Issue

Ingo Clemens · 2023-04-20T09:51:26+02:00

Ingo Clemens commented

2023-04-20 09:51:26 +02:00

System Information
Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Max 1.2

Blender Version
Broken: version: 3.5 and 3.5.1 Release Candidate, branch: blender-v3.5-release, commit date: 2023-04-19 10:18, hash: 8e6e737ec80b
Worked: OpenGL backend

Short description of error
Viewport navigation is unreliable at times (panning, zooming and orbiting) when 'Auto Depth' is enabled in the Navigation Preferences and Wireframe is enabled (either in Wireframe display and Wireframe Overlay).

Unreliable means:

Orbiting doesn't occur at the mouse position but around an arbitrary point making exact navigation impossible.
Panning and Zooming is happening in very small, almost invisible increments.

See this video for a visual reference: https://youtu.be/qqJkxJTSX4s

It doesn't happen all the time and depends on the display size of the objects on screen. The closer the view is to the object, the less frequent the issue occurs.
When the view is from a distance, therefore the objects are displayed small, the error occurs more frequently.

It appears to be a precision error of some sort. Maybe also how fast the interaction is. When there is a noticeable time between the click and the drag it seems to happen less often.

Disabling the Wireframe display fixes the issue.

Exact steps for others to reproduce the error
The problem occurs with default Blender.

Enable 'Auto Depth' in the Navigation Preferences.
Choose Wireframe as the viewport display or turn on the wireframe overlay in the viewport shading settings.
Create some geometry (i.e. spheres which have some more wireframe to display)
Perform regular navigation (pan, orbit, zoom) while trying to navigate around the objects. The issue happens more often the smaller the objects are displayed.

**System Information** Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Max 1.2 **Blender Version** Broken: version: 3.5 and 3.5.1 Release Candidate, branch: blender-v3.5-release, commit date: 2023-04-19 10:18, hash: `8e6e737ec80b` Worked: OpenGL backend **Short description of error** Viewport navigation is unreliable at times (panning, zooming and orbiting) when 'Auto Depth' is enabled in the Navigation Preferences and Wireframe is enabled (either in Wireframe display and Wireframe Overlay). Unreliable means: - Orbiting doesn't occur at the mouse position but around an arbitrary point making exact navigation impossible. - Panning and Zooming is happening in very small, almost invisible increments. See this video for a visual reference: https://youtu.be/qqJkxJTSX4s It doesn't happen all the time and depends on the display size of the objects on screen. The closer the view is to the object, the less frequent the issue occurs. When the view is from a distance, therefore the objects are displayed small, the error occurs more frequently. It appears to be a precision error of some sort. Maybe also how fast the interaction is. When there is a noticeable time between the click and the drag it seems to happen less often. Disabling the Wireframe display fixes the issue. **Exact steps for others to reproduce the error** The problem occurs with default Blender. 1. Enable 'Auto Depth' in the Navigation Preferences. 2. Choose Wireframe as the viewport display or turn on the wireframe overlay in the viewport shading settings. 3. Create some geometry (i.e. spheres which have some more wireframe to display) 4. Perform regular navigation (pan, orbit, zoom) while trying to navigate around the objects. The issue happens more often the smaller the objects are displayed.

Ingo Clemens added the

labels 2023-04-20 09:51:27 +02:00

Ingo Clemens commented

2023-04-20 10:03:34 +02:00

The problem seems to be limited to macOS. Testing on Windows 10 didn't produce the error.

Michael Parkin-White commented

2023-04-20 11:26:08 +02:00

Thanks for the report, this could possibly be related to other similar selection/texture paint issues where the viewport size state was not always correct for operations outside of rendering passes.

Fixes for these issues have landed in 3.6.0 alpha (https://builder.blender.org/download/daily/) and will be back ported to 3.5.1 but the commits have not yet landed.

would you be able to confirm a few details:

Does this occur with the OpenGL backend enabled in 3.5.0?
Does this occur with the Metal backend in 3.6.0?
Could you please attach the demo file you had in the video? (No worries if you don't have it any more)

Thanks :)!

Though I will investigate this anyhow!

Thanks for the report, this could possibly be related to other similar selection/texture paint issues where the viewport size state was not always correct for operations outside of rendering passes. Fixes for these issues have landed in 3.6.0 alpha (https://builder.blender.org/download/daily/) and will be back ported to 3.5.1 but the commits have not yet landed. would you be able to confirm a few details: 1) Does this occur with the OpenGL backend enabled in 3.5.0? 2) Does this occur with the Metal backend in 3.6.0? 3) Could you please attach the demo file you had in the video? (No worries if you don't have it any more) Thanks :)! Though I will investigate this anyhow!

Jason Fielder added the

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Metal Viewport: Navigation issue with 'Auto Depth' and 'Wireframe' enabled #107159