Many Intel GPUs can't switch between sync and async flips
willy nilly. Sometimes that change itself will take one
extra frame. This means that constant ping-pong between
sync and async flips is only going to cause problems.
Stay in async flip mode as long as the client is requesting
it.
The present protocol spec does say:
"If 'options' contains PresentOptionAsync, and the 'target-msc'
is less than or equal to the current msc for 'window', then
the operation will be performed as soon as possible, not
necessarily waiting for the next vertical blank interval."
So there is an expectation that a future target-msc will
still be respected even when PresentOptionAsync is specified.
Staying in async flip mode won't actually change that given
that present_scmd_pixmap() takes the flip mode into account
when calculating exec_msc. So visually the flip should still
happen on the correct target_msc regardles of whether we
executed it as sync or async.
Signed-off-by: notbabaisyou <though-went-some-simple@proton.me>
dix-config.h always needs to be included first, otherwise things
can get messed up in really obscure ways, eg. certain types silently
changing in size and causing mysterious crashes.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1813>
If a present request using explicit sync is scrapped, instead of sending
a PresentIdleNotify event we should signal the release point.
Signed-off-by: Erik Kurzinger <ekurzinger@nvidia.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1511>
For tracking the MSC when the present can be executed separately from
the target MSC.
Allows removing the requeue field instead, plus more later.
v2:
* Rename wait_msc → exec_msc (Roman Gilg)
* Use exec_msc = target_msc instead of exec_msc++, for clarity.
* Bug fix: Set exec_msc = target_msc also if present_flip returned
false in present_execute.
v3:
* Set exec_msc = target_msc also if present_wnmd_flip returned
false in present_wnmd_execute, for consistency.
v4:
* Specifically check for exec_msc == crtc_msc + 1 in
present_execute_wait/copy, to avoid re-introducing
https://bugs.freedesktop.org/show_bug.cgi?id=94596 .
Reviewed-by: Roman Gilg <subdiff@gmail.com>
Tested-by: Roman Gilg <subdiff@gmail.com>
Preparation for different handling between SCMD & WNMD. No functional
change intended.
Reviewed-by: Roman Gilg <subdiff@gmail.com>
Tested-by: Roman Gilg <subdiff@gmail.com>
Make sure that vblanks and windows get cleaned up correctly
in window flip mode.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Flipping pixmaps per window needs additional arguments in the
flip mode API. Add these as preperation for window flip mode.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Introduce vblank property for flip modes, that demand explicite
allowance by the driver for vblanks to become idle.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
With the new internal flip mode API move vblank creation
and so on into a seperate file, such that it can be shared
between flip modes.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Ville Syrjälä
Enrico Weigelt, metux IT consult
Erik Kurzinger
Xaver Hugl
Michel Dänzer
Łukasz Spintzyk
Lionel Landwerlin
Roman Gilg