The DC code is broken for setups with several screens. Devs only have one pSave
pixmap and there's no code to thrash them like p[Save|Restore]GC.
That means if you have two X screens and force SW cursor on both, the server
will end up passing a bunch of CopyAreas with mismatching screens to the driver,
which can fail horribly if the driver does a good job abstracting screens away
from each other.
The GC thrashing code looks a bit clunky in the first place. Can we just have an
array with numScreens elements for the per-device GCs and pixmaps?
Thanks,
- Pierre-Loup
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