Scrolling and panning on Linux is very laggy on versions 9.1 and later

[tdaede]

Describe the bug
Panning and scrolling in all windows is very slow. This seems to be fallout from #341 changing the xrender options. A workaround is to set support/launch.properties to:

VMARGS_LINUX=-Dsun.java2d.xrender=false

and that brings smooth scrolling back.

I think this might depend on what provides XRender. It's provided by Glamor (a GL based backend) on my system.

To Reproduce
Open a large window with the function call graph open. Drag it around, and a redraw will only happen once the mouse cursor slows down.

Expected behavior
Behavior of 9.0.4 and below with very fast scrolling.

Environment (please complete the following information):

• OS: Fedora 32
  Gnome 3 X.Org
  Intel HD4600
  mesa version 20.0.4
  (xrender provided by glamor)
• Java Version: 14
  openjdk version "1.8.0_242"
  OpenJDK Runtime Environment (build 1.8.0_242-b08)
  OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)
• Ghidra Version: 9.1 and 9.1.2

[ryanmkurtz]

The values in launch.properties intend to define reasonable defaults, and the user is encouraged to change them based on their individual system configurations and needs. This is the first issue that's come up with xrender being set to true, so I'd be hesitant to see it changed at this point. Was this a standard Fedora install or did you do something special for glamor?

[dragonmacher]

Closed due to inactivity.

[nzec]

Also encountered this bug. setting VMARGS_LINUX=-Dsun.java2d.xrender=false seems to have fixed it. On a Ubuntu 22.04 install