xserver

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Files

stefan11111 1708f0f6ae composite: Only copy bits from the parent pixmap when absolutely necessary

Since 1e728c3e88 ,
Whenever we allocate a composite pixmap, we perform an expensive CopyArea call from the parent pixmap.

This leads to very bad performance when using a framebuffer driver without shadowfb.

My guess is that this call ends up reading memory from the framebuffer memory directly, which is very slow.

Fixes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1814

Reviewed-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: stefan11111 <stefan11111@shitposting.expert>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2073>
(cherry picked from commit 7e6c55cc9f)

2026-01-25 10:40:03 -08:00

compalloc.c

composite: Only copy bits from the parent pixmap when absolutely necessary

2026-01-25 10:40:03 -08:00

compext.c

composite: drop swapping request length fields

2026-01-25 10:39:58 -08:00

compinit.c

dix: unexport Ones()

2026-01-25 10:39:57 -08:00

compint.h

2023-02-25 09:40:41 -08:00