gnu: mesa: Re-enable X11 protocol support for the DRI2 extension.

Starting with Mesa 24.3, X11 protocol support for the DRI2 extension is
no longer enabled by default.  The developers are phasing it out in
favor of DRI3, and have moved it into an optional 'legacy-x11' feature.
Re-enable it to retain hardware acceleration on older systems that do
not support DRI3.

* gnu/packages/gl.el (mesa)[arguments]<#:configure-flags>: Add
'-Dlegacy-x11=dri2'.

Signed-off-by: John Kehayias <john.kehayias@protonmail.com>
This commit is contained in:
Philipp Berger 2025-07-13 06:06:45 +02:00 committed by John Kehayias
parent f5486310de
commit f09ae65276
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@ -439,6 +439,9 @@ panfrost,r300,r600,svga,softpipe,llvmpipe,tegra,v3d,vc4,virgl,zink"))
;; Also enable the tests.
"-Dbuild-tests=true"
;; Re-enable X11 protocol support for the DRI2 extension.
"-Dlegacy-x11=dri2"
"-Dllvm=enabled") ; default is x86/x86_64 only
;; XXX: 'debugoptimized' causes LTO link failures on some drivers. The