[not for merging] enhance(main/mesa): Lucas Fryzek and xMeM's freedreno kgsl for mesa 26.2.0-devel

[lfdevs]

• Based on Robert Kirkman's PR ([not for merging] enhance(main/mesa): Lucas Fryzek and xMeM's freedreno kgsl for mesa 25.1.1 #24840), rebased to mesa 26.2.0-devel. The reason it is opened as a draft PR is to make it easier for people in need to download, and there is no need to merge.
• For convenience and some potentially needed latest features, I directly specified the source code as a branch of my repository. This branch has already applied patches such as 0013-detect-sve-sve2-support.patch, 0016-unofficial_support_adreno_710_720_722.patch, 0017-preserve-egl-support-in-zink.patch, 0018-disable-general-layout-in-zink-for-turnip.patch, etc., so the already applied patches are not repeatedly used here.
• The original inventor of this code is Lucas Fryzek. The Termux:X11 port of this code was created by xMeM.
• Requires specifying the environment variable MESA_LOADER_DRIVER_OVERRIDE=kgsl when used.

Tip

• Due to current limitations, if you use desktop environments such as Xfce 4 or KDE Plasma, please disable the display compositor first before installing the build artifacts of this PR.
• If screen tearing issues occur when running certain programs or games, you can add the following two environment variables to force-enable vertical sync:

  vblank_mode=3 MESA_VK_WSI_PRESENT_MODE=mailbox

[robertkirkman]

Thank you, i did not have time to make updates for this and this is helpful for people who like this driver, even though it has flickering that most people probably don't prefer

[hansm629]

@lfdevs
Thank you!

There are still artifact, flickering, and tearing issues, but it works very well on the Adreno 840.

Most of the Freedreno KGSL-related issues seem to be caused by compatibility problems with the Termux-X11 X server and fence synchronization issues.

Would it be possible to fix these issues by using Claude and Codex?

[lfdevs]

Would it be possible to fix these issues by using Claude and Codex?

I think even with AI assistance, it still requires someone who is relatively familiar with graphics driver development. Otherwise, we wouldn't know where to begin.

[IntinteDAO]

Would it be possible to fix these issues by using Claude and Codex?

I think even with AI assistance, it still requires someone who is relatively familiar with graphics driver development. Otherwise, we wouldn't know where to begin.

I agree, although if we don't have someone like that, I would start by creating a demo for the AI. That way, we could eliminate the human in the loop. Instead of a person writing "works / doesn't work," let the AI try different ways to pinpoint the problem and "see" whether it solved the problem or not.