Display bug in shading and overlays #77282

New Issue

Niko · 2020-06-02T20:46:37+02:00

Niko commented

2020-06-02 20:46:37 +02:00

System Information
Operating system: macOS 10.15.4
Graphics card: Radeon RX 580 8 GB

Blender Version
Broken:
2.82a 2020-03-20
2.80 2019-07-29

Worked: -

Short description of error
Display bug in shading when Clip Start value is too low:

Display bug in overlays when Clip End value is too high:

I can reproduce it with Blender 2.80 2019-07-29.
Someone on Blenderartists says he has the same thing on Windows 10:
Weird screen effects in Solid Viewport Shading

Exact steps for others to reproduce the error
With the default startup file:

Clip start: 0.001 mm -> display bug in shading in perspective mode only.
Clip end: 1000 km -> display bug in overlays in both perspective and orthographic modes.

**System Information** Operating system: macOS 10.15.4 Graphics card: Radeon RX 580 8 GB **Blender Version** Broken: 2.82a 2020-03-20 2.80 2019-07-29 Worked: - **Short description of error** Display bug in shading when Clip Start value is too low: ![Screenshot 2020-06-02 at 20.33.06.png](https://archive.blender.org/developer/F8572705/Screenshot_2020-06-02_at_20.33.06.png) Display bug in overlays when Clip End value is too high: ![Screenshot 2020-06-02 at 20.34.52.png](https://archive.blender.org/developer/F8572704/Screenshot_2020-06-02_at_20.34.52.png) I can reproduce it with Blender 2.80 2019-07-29. Someone on Blenderartists says he has the same thing on Windows 10: [Weird screen effects in Solid Viewport Shading ](https://blenderartists.org/t/weird-screen-effects-in-solid-viewport-shading/1232135) **Exact steps for others to reproduce the error** With the default startup file: - Clip start: 0.001 mm -> display bug in shading in perspective mode only. - Clip end: 1000 km -> display bug in overlays in both perspective and orthographic modes.

Niko commented

2020-06-02 20:46:37 +02:00

Added subscriber: @Loopkin

Jeroen Bakker commented

2020-06-02 21:29:52 +02:00

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2020-06-02 21:29:52 +02:00

Clip start and end is used to define the area where a 24 bit float value is used for depth precision. Setting these values to extreme values means that you decrease the depth precision and that gives artifacts. Decreasing the range will improve the depth precision.

This is a limitation of GPU rasterization we should improve the help text and manual as this is a common mistake.

Clip start and end is used to define the area where a 24 bit float value is used for depth precision. Setting these values to extreme values means that you decrease the depth precision and that gives artifacts. Decreasing the range will improve the depth precision. This is a limitation of GPU rasterization we should improve the help text and manual as this is a common mistake.

Jesse Yurkovich commented

2020-06-02 23:44:57 +02:00

Added subscriber: @deadpin

Jesse Yurkovich commented

2020-06-02 23:44:57 +02:00

The manual already has a very visible orange warning box explaining the situation- [x]. Since that has existed for some time, and users still inadvertently run into issues quite frequently, I think it's time for a more direct UI indicator now.

Just an example below of what it could look like[2]:

The manual already has a very visible orange warning box explaining the situation- [x]. Since that has existed for some time, and users still inadvertently run into issues quite frequently, I think it's time for a more direct UI indicator now. Just an example below of what it could look like[2]: ![example.png](https://archive.blender.org/developer/F8572962/example.png) - [x] https://docs.blender.org/manual/en/dev/editors/3dview/properties/sidebar.html#dview-view-clip - [x] [P1443](https://archive.blender.org/developer/P1443.txt)

Niko commented

2020-06-03 07:33:43 +02:00

OK thank's, so this not a bug.
Maybe a UI warning is actually a good idea !

OK thank's, so this not a bug. Maybe a UI warning is actually a good idea !

Richard Antalik commented

2020-06-04 11:15:33 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-06-04 11:15:33 +02:00

Changed status from 'Needs Triage' to: 'Archived'

Richard Antalik closed this issue

2020-06-04 11:15:33 +02:00

Richard Antalik self-assigned this 2020-06-04 11:15:33 +02:00

Richard Antalik commented

2020-06-04 11:15:33 +02:00

+1 for warning in UI. There are like 50 identical reports. @deadpin you should make patch for UI team to review.

Since this is not bug, report will be closed.

+1 for warning in UI. There are like 50 identical reports. @deadpin you should make patch for UI team to review. Since this is not bug, report will be closed.

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Display bug in shading and overlays #77282