b670527429
These events aren't reachable after xwl_present_cleanup, so they're leaked if we don't free them first. This requires storing the pixmap pointer in struct xwl_present_window. Luckily, the buffer pointer isn't used for anything, so just replace that. v2: * Bump pixmap reference count in xwl_present_flip and drop it in xwl_present_free_event, fixes use-after-free in the latter due to the pixmap already being destroyed. Reviewed-by: Dave Airlie <airlied@redhat.com>
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
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