Adam Jackson <[email protected]> writes: > ... instead of its root window. Xwayland's rootless mode empties the > root window border clip since its root window has no storage, but > redirected windows (the only kind it can show) will have a non-empty > border clip anyway, cf. the #ifdef COMPOSITE in miComputeClips. With > this change, non-glamor Xwayland's GetImage actually works. > > Other acceleration layers may need to change to account for this, but > this appears to be safe for the existing open source drivers. Only the > xfree86 DDX has any problem with losing its framebuffer on VT switch, > and even then only for UMS drivers (which excludes glamor, uxa, and sna > from consideration). This leaves exa, which already contains code to > evict pixmaps to host memory on VT switch. Since the xfree86 core will > still empty the root clip on VT switch, while the root window itself may > not contain a valid image we won't try to touch it, but GetImage from a > redirected window will now work even when switched away. > > Signed-off-by: Adam Jackson <[email protected]>
Acked-by: Keith Packard <[email protected]> -- -keith
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