3D Viewport wireframes can anti-alias in a wonky way #120781

New Issue

Sybren A. Stüvel · 2024-04-18T12:50:26+02:00

Sybren A. Stüvel commented

2024-04-18 12:50:26 +02:00

System Information
Operating system: Linux-5.15.0-101-generic-x86_64-with-glibc2.35 64 Bits, X11 UI
Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 470.239.06

Blender Version
Broken: version: 4.2.0 Alpha, branch: main, commit date: Thu Apr 18 12:33:42 2024 +0200, hash: 23348d4a5c62ef63042742862e6d99537d02e12f
Worked: 4.1 could be more anti-aliased to my taste, but doesn't show this particular issue.

Short description of error
Wireframes be wonk. It looks like the anti-aliasing is causing some extra stair-stepping effect.

Exact steps for others to reproduce the error

blender41 --factory-startup --python-expr 'import bpy, math; bpy.context.object.rotation_euler.x = math.radians(-6)'
Switch the 3D Viewport to Wireframe mode
Observe the wonk

`main`:
4.1 release:

This issue occurs both in my self-compiled Blender as well as the latest buildbot build (9cb3a17352, download).

**System Information** Operating system: Linux-5.15.0-101-generic-x86_64-with-glibc2.35 64 Bits, X11 UI Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 470.239.06 **Blender Version** Broken: version: 4.2.0 Alpha, branch: `main`, commit date: Thu Apr 18 12:33:42 2024 +0200, hash: `23348d4a5c62ef63042742862e6d99537d02e12f` Worked: 4.1 could be more anti-aliased to my taste, but doesn't show this particular issue. **Short description of error** Wireframes be wonk. It looks like the anti-aliasing is causing some extra stair-stepping effect. **Exact steps for others to reproduce the error** - `blender41 --factory-startup --python-expr 'import bpy, math; bpy.context.object.rotation_euler.x = math.radians(-6)'` - Switch the 3D Viewport to Wireframe mode - Observe the wonk | `main`:| ![image](/attachments/00a75156-f8dd-4269-b2a6-cffcae304021) | |-|-| | 4.1 release: | ![image](/attachments/4539065c-da6e-4e41-88ca-da40d41fec30) | This issue occurs both in my self-compiled Blender as well as the latest buildbot build (`9cb3a17352`, [download](https://builder.blender.org/download/daily/blender-4.2.0-alpha+main.9cb3a17352bd-linux.x86_64-release.tar.xz)).

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Sybren A. Stüvel added the

labels 2024-04-18 12:50:27 +02:00

Jeroen Bakker commented

2024-04-18 12:56:44 +02:00

Can reproduce on metal as well when not using HDPI screens

There were some patches for wireframe rendering lately, will need to look which one introduced the artifacts.

Can reproduce on metal as well when not using HDPI screens ![image](/attachments/13c6a46c-1f94-46a2-8d74-d45b13f1b77e) There were some patches for wireframe rendering lately, will need to look which one introduced the artifacts.

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Trevor H commented

2024-04-18 16:31:37 +02:00

System Information
Operating system: Windows 10 home : Laptop Lenovo G50-80
Graphics card: Intel(R) HD Graphics 5500 4.4.0 - Build 20.19.15.5063

I don't know if this is related, but will comment in case it is.

In Blender 4.1.1...I get weird glitch type affect in edit mode. This actually happened a few years ago with Intel Graphic users, and it was fixed.

Blender 3.6 and Blender 4.0 do not have this issue.

The Images are from Blender 3.6 and Blender 4.1.1, with my Viewport Display Settings.

System Information Operating system: Windows 10 home : Laptop Lenovo G50-80 Graphics card: Intel(R) HD Graphics 5500 4.4.0 - Build 20.19.15.5063 I don't know if this is related, but will comment in case it is. In Blender 4.1.1...I get weird glitch type affect in edit mode. This actually happened a few years ago with Intel Graphic users, and it was fixed. Blender 3.6 and Blender 4.0 do not have this issue. The Images are from Blender 3.6 and Blender 4.1.1, with my Viewport Display Settings.

Blender4_1_1.jpg

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Blender3_6.jpg

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