Any plans to fix directx renderer on Windows, it h...

# compose-desktop

[mohamed rejeb]

Any plans to fix directx renderer on Windows, it has a lot of flickering issues (flickering on hover buttons appears even on jb toolbox, flickering with some random black squares grid on complex paths/images when there is a lot of content...)
These issues have been there for years now, it should be a priority.

[Nitesh Singh]

you can try
System.setProperty("skiko.renderApi", "OPENGL")
System.setProperty("skiko.renderApi", "SOFTWARE")

[mohamed rejeb]

I did. I'm using opengl right now but directx is better and it is the default renderer, it should be fixed.

[Alexander Maryanovsky]

Is there a ticket with a reproducer?

[mohamed rejeb]

Yes there is, you can check the video as well
The fix that I listed in the comments only makes it harder to reproduce.

https://youtrack.jetbrains.com/issue/CMP-8127/Rendering-bug-in-Windows-on-drawing-large-paths

[mohamed rejeb]

I will open an issue on the hover issue, sometimes when you hover clickable items the UI starts shaking.

[Alexander Maryanovsky]

Like this?

IMG_2613.MOV

[Alexander Maryanovsky]

and it doesn’t show up if you record the screen

[mohamed rejeb]

I have windows only on the office, I will share a video with you when I'm there.
But the most important issue is the first one reported on youtrack, the app becomes unusable when it appears.

[Alexander Maryanovsky]

Does this happen only on your computer, or others as well? Anything special about it?

[mohamed rejeb]

Nothing special, it happens all the time on all the computers I tried with.

[mohamed rejeb]

You didn't manage to reproduce it on your computer?

[Alexander Maryanovsky]

Haven’t tried yet; my main work computer is a mac…

[mohamed rejeb]

You should be able to reproduce it, you need to be patient and keep dragging for few seconds.
Also the higher the resolution of your screen the faster you can reproduce it.

[Alexander Maryanovsky]

When you record the screen, does it show in the video?

[mohamed rejeb]

Yes it does. That's the video attached to the YouTrack issue above:

reproduce.mp4

[Alexander Maryanovsky]

Ah, silly question.

[Alexander Maryanovsky]

I saw the recording…

[mohamed rejeb]

After it appears for the first time, it will start appearing everywhere even on hovering a button for example

[mohamed rejeb]

That's how it looks in a real app on a 2k screen
You can see the images flickering as well

IMG_3276.MOV

[mohamed rejeb]

Did manage to reproduce it?