present_notify_msc with divisor == 0 has undocumented special meaning,
it means async present notify, which means we could receive MSC
notifications from the past.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Factored out vblank event generation, add abstraction over how vblank
events are generated. The goal is so we can request vblank events in
different ways based on the driver we are running on.
Tried to simplify the frame scheduling logic, we will see if I succeeded
or not.
Also, the logic to exclude vblank events for vblank interval estimation
when the screen off is dropped. It's too hard to get right, we need to
find something robust.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
We unredirect because we receive bad vblank events, and also vblank
events at a different interval compared to when the screen is on. But it
is enough to just not record the vblank interval statistics when the
screen is off.
Although, unredirecting when display is off can also fix the problem
where use-damage causes the screen to flicker when the display is turned
off then back on. So we need something else for that.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Previously everytime we receive a vblank event, we always request a new
one. This made the logic somewhat simpler. But this generated many
useless vblank events, and wasted power. We only need vblank events for
two things:
1. after we rendered a frame, we need to know when it has been displayed
on the screen.
2. estimating the refresh rate.
This commit makes sure we only request vblank events when it's actually
needed.
Fixes#1079
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Part of the long running effort to reduce the prevalence of `session_t`.
After this, functions that communicate with X can make use of the error
handling machinary (set_ignore_cookie, set_cant_fail_cookie) without
needing to take a `session_t` parameter.
This commit converts everything to use the new struct `x_connection`,
most of the conversions are mechanical.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
there are two x extensions for working with monitors (especially
multiple): xinerama and randr. xinerama is old, feature-poor and in
general isn't used anymore compared to the randr: new, feature-rich and
widely-used. for some reason we were using both of them, so let's drop
xinerama to keep things simple, clean and small. and to be modern.
the drop was done in three steps:
* first step was to replace all the xinerama-based code with the
randr-based one and to replace or remove all the xinerama mentions;
* second step was to replace the xinerama's terminology with the
randr's one. xinerama was referring only to the word "screen", while
randr refers to multiple words and i think the word "monitor" is the
most suitable for us and, hopefully, clear both to a contributor and
to an end user;
* third step was to refactor the new randr-based code if needed and to
address related todo's (mostly about moving related functions
elsewhere).
all the steps were done well except addressing a leftover todo about
moving the win_update_monitor function to the x.c which wasn't done.
the xinerama-shadow-crop option was renamed to crop-shadow-to-monitor,
but it's previous name is still accepted, has effect and the
deprecation message is printed to preserve backwards-compatibility.
We used to have a list of X errors we should ignore in case they do
occur. This commit expands that functionality to also allow us aborting
on certain errors.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Downstream code expect wid_get_text_prop to return at least 1 string.
However wid_get_text_prop would return 0 strings when the property is
set to an empty string.
Fixes: dc37370a66
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Of course, we still use GLX, so we can't completely remove Xlib yet. But
this removes all Xlib uses outside of the backends.
This drops support for COMPOUND_TEXT Xorg strings, so people how wants
multilingual support has to use UTF8, which should be fine since most of
the applications support that.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Rename `popcountl` to `popcntul` to avoid name conflicts with NetBSD
system headers.
Remove the unused `popcount` function.
Closes#502
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
x_print_error aborts the program when it sees a redirect_subwindow
failure. A function called x_print_error really shouldn't cause the
program to terminate.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
leftovers:
1) config file path. Has to implement compatibility functionalities before
we can change it.
2) links in man pages. Has to migrate the repo first.
3) _COMPTON_SHADOW, it has become a defacto standard, so we have to keep
supporting it.
4) dbus names, undecided whether we should/could change it.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
During normalization of the kernel, the center element is added to the
sum twice, causing the resulting elements to be smaller than they should
be.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
After converting from struct conv to xorg format, cache the result to
save CPU time.
And remove an unused function.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Instead of storing them as an array of xfixed.
Might cause some performance overhead for the new backend, because
it is allocating a buffer to do the conversion every frame. Will fix
later.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
As a global variable, since they shouldn't change during the period
compton is running. Also limit the scope of the variable to x.c.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
