Orthographic view is blurry - rB36814ddc94b5 regression #85726

New Issue

Alaska · 2021-02-17T08:00:44+01:00

Alaska commented

2021-02-17 08:00:44 +01:00

System Information:
Operating system: Linux-5.10.0-3-amd64-x86_64 64 Bits
Graphics card: GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.39

Blender Version:
Broken version: 2.93.0 Alpha, branch: master, commit date: 2021-02-17 06:07, hash: 17dddc9417
Worked: Prior to 2.93 36814ddc94

Short description of error:
When in orthographic mode, the 3D viewport appears "blurrier" than usual when compared to non-orthographic mode or older versions of Blender. Here's a few screenshots:


Prior to `36814ddc94`	Current Master	Prior to `36814ddc94` (enlarged)	Current Master (enlarged)

Exact steps for others to reproduce the error:

Open a scene with a model that's at least semi-complex, I used a scene with Suzanne in it.
Enter orthographic mode View -> Perspective/Orthographic, or Numpad 5.
Observe how the scene appears blurry when compared to older versions. Changing the anti-aliasing option in User Preferences -> Viewport -> Viewport Anti-aliasing can either make the effect worse or better. Decreasing anti-aliasing sample count makes the issue better while increasing the anti-aliasing sample count makes it worse. This is inline with the issue being related to a change in the TAA used by the workbench render engine introduced in 36814ddc94.

Note: I am using a 1920x1080 monitor. I assume this issue is less noticeable on higher resolution monitors.

**System Information:** Operating system: Linux-5.10.0-3-amd64-x86_64 64 Bits Graphics card: GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.39 **Blender Version:** Broken version: 2.93.0 Alpha, branch: master, commit date: 2021-02-17 06:07, hash: `17dddc9417` Worked: Prior to 2.93 36814ddc94 **Short description of error:** When in orthographic mode, the 3D viewport appears "blurrier" than usual when compared to non-orthographic mode or older versions of Blender. Here's a few screenshots: |![Old.jpg](https://archive.blender.org/developer/F9811401/Old.jpg)|![Latest.jpg](https://archive.blender.org/developer/F9811399/Latest.jpg)|![Old (Enlarged).jpg](https://archive.blender.org/developer/F9811404/Old__Enlarged_.jpg)|![Latest (Enlarged).jpg](https://archive.blender.org/developer/F9811406/Latest__Enlarged_.jpg)| | -- | -- | -- | -- | |Prior to 36814ddc94| Current Master|Prior to 36814ddc94 (enlarged)|Current Master (enlarged)| **Exact steps for others to reproduce the error:** 1. Open a scene with a model that's at least semi-complex, I used a scene with Suzanne in it. 2. Enter orthographic mode `View -> Perspective/Orthographic`, or `Numpad 5`. 3. Observe how the scene appears blurry when compared to older versions. Changing the anti-aliasing option in `User Preferences -> Viewport -> Viewport Anti-aliasing` can either make the effect worse or better. Decreasing anti-aliasing sample count makes the issue better while increasing the anti-aliasing sample count makes it worse. This is inline with the issue being related to a change in the TAA used by the workbench render engine introduced in 36814ddc94. Note: I am using a 1920x1080 monitor. I assume this issue is less noticeable on higher resolution monitors.

Alaska commented

2021-02-17 08:00:44 +01:00

Added subscriber: @Alaska

blender-admin commented

2021-02-17 08:00:44 +01:00

#85941 was marked as duplicate of this issue

blender-admin commented

2021-02-17 08:00:44 +01:00

#85782 was marked as duplicate of this issue

blender-admin commented

2021-02-17 08:00:44 +01:00

#85775 was marked as duplicate of this issue

Alaska commented

2021-02-17 08:02:04 +01:00

Added subscriber: @Jeroen-Bakker

Alaska commented

2021-02-17 08:02:04 +01:00

As pointed out in the report, bisecting points to 36814ddc94 as the cause.

CC @Jeroen-Bakker

As pointed out in the report, bisecting points to 36814ddc94 as the cause. CC @Jeroen-Bakker

Philipp Oeser commented

2021-02-17 10:58:24 +01:00

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

Dalai Felinto commented

2021-02-17 10:59:01 +01:00

Added subscriber: @dfelinto

Jeroen Bakker was assigned by Dalai Felinto

2021-02-17 10:59:01 +01:00

Dalai Felinto commented

2021-02-17 10:59:01 +01:00

I can reproduce as well on:

Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.102.04```

Assigning to Jeroen since it was recent from one of his commits.

I can reproduce as well on: ```Operating system: Linux-5.8.0-41-generic-x86_64-with-glibc2.31 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.102.04``` Assigning to Jeroen since it was recent from one of his commits.

Jeroen Bakker removed their assignment 2021-02-17 12:14:23 +01:00

Clément Foucault was assigned by Jeroen Bakker

2021-02-17 12:14:23 +01:00

Alaska commented

2021-02-17 22:56:28 +01:00

Added subscriber: @fclem