Text Editor scrolling lag, macOS Metal backend #110898

New Issue

Yevgeny Makarov · 2023-08-07T18:05:26+02:00

Yevgeny Makarov commented

2023-08-07 18:05:26 +02:00

System Information
Operating system: macOS-12.6.3-x86_64-i386-64bit 64 Bits
Graphics card: Metal API AMD Radeon Pro 455 1.2

Blender Version
Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-07-30 15:51, hash: a14c747fe8e4
Worked: OpenGL

Short description of error
There is a lag when scrolling in Text Editor. (macOS, Metal backend)

Exact steps for others to reproduce the error

In text editor, open a big text (like gizmo_custom_geometry.py from Templates)
Try using MMB-drag or try scrolling on the trackpad

MMB-drag: you will see some page lag from the cursor, while with OpenGL the page moves with the cursor.

Trackpad: if you scroll, stop and hold; the text will continue scrolling after you stop your fingers. When using the OpenGL backend it stopped immediately.

**System Information** Operating system: macOS-12.6.3-x86_64-i386-64bit 64 Bits Graphics card: Metal API AMD Radeon Pro 455 1.2 **Blender Version** Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-07-30 15:51, hash: `a14c747fe8e4` Worked: OpenGL **Short description of error** There is a lag when scrolling in Text Editor. (macOS, Metal backend) **Exact steps for others to reproduce the error** - In text editor, open a big text (like `gizmo_custom_geometry.py` from Templates) - Try using MMB-drag or try scrolling on the trackpad MMB-drag: you will see some page lag from the cursor, while with OpenGL the page moves with the cursor. Trackpad: if you scroll, stop and hold; the text will continue scrolling after you stop your fingers. When using the OpenGL backend it stopped immediately.

text-editor-scrolling-lag-v3.6.1.mov

47 MiB

Yevgeny Makarov added the

labels 2023-08-07 18:05:26 +02:00

YimingWu commented

2023-08-08 04:23:54 +02:00

I'm not sure how this is affected by the UI drawing back-end. Does this also change how the event is handled? 🤔

YimingWu added the

Platform

macOS

label 2023-08-08 04:24:02 +02:00

Pratik Borhade commented

2023-08-08 05:10:38 +02:00

Maybe screen coordinate you get from low level functions could affect the result with different backend? Not sure though :)
@mano-wii can you verify the problem with Metal backend?

Maybe screen coordinate you get from low level functions could affect the result with different backend? Not sure though :) @mano-wii can you verify the problem with Metal backend?

Germano Cavalcante commented

2023-08-08 22:57:32 +02:00

I tested it on different versions with Metal and with OpenGL but I couldn't notice any difference on the Mac M1.

It should only be an issue on Macs with AMD GPUs.

Operating system: macOS-13.3.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 1.2

I tested it on different versions with Metal and with OpenGL but I couldn't notice any difference on the Mac M1. It should only be an issue on Macs with AMD GPUs. ``` Operating system: macOS-13.3.1-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 1.2 ```

Pratik Borhade commented

2023-08-09 05:02:55 +02:00

It should only be an issue on Macs with AMD GPUs.

@iss , can you replicate?

> It should only be an issue on Macs with AMD GPUs. @iss , can you replicate?

Richard Antalik commented

2023-08-15 05:24:59 +02:00

I think I can reproduce with Magic Mouse. There is lag, but only when scrolling from top down.

👀 1

Richard Antalik added

and removed

labels 2023-08-15 05:25:17 +02:00

YimingWu commented

2023-08-16 03:52:17 +02:00

Not sure if this patch will help? #110927

Not sure if this patch will help? https://projects.blender.org/blender/blender/pulls/110927

Yevgeny Makarov commented

2023-08-16 07:34:39 +02:00

Not sure if this patch will help? #110927

No, the current bug is present with the MMB-drag as well. I've added a video to the description.

> Not sure if this patch will help? https://projects.blender.org/blender/blender/pulls/110927 No, the current bug is present with the MMB-drag as well. I've added a video to the description.

Brecht Van Lommel added

Module

Platforms, Builds & Tests

and removed

Module

User Interface

labels 2024-02-07 18:09:57 +01:00

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