Bug#1118780: gtk4: Mipmap tests fail 16/32-bit pixel format conversions due to memory alignment issues

[John Paul Adrian Glaubitz]

On Sat, 2025-10-25 at 21:46 +0200, Gregor Riepl wrote:
> > I have tested your patch now and it seems it just reduced the number of failures by one.
> 
> There's already a workaround for the "Missing JIT" error, but it seems to be broken on sparc...
> 
> https://salsa.debian.org/gnome-team/gtk4/-/blob/debian/latest/debian/rules?ref_type=heads#L279-294

Well, for some reason the setting "export GALLIUM_DRIVER=softpipe" is ignored. I'm currently
reading the Mesa documentation to figure out why that's the case.

Adrian

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