Firstly, this breaks the assumption that when we redirect the screen,
all window is either mapped or unmapped, causing a assertion failure.
Secondly, if transition window into fading when the screen is not
redirected, the fading will not progress until the screen is redirected,
probably not the desired result.
Fixes#246
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Since user reports indicate it has real performance benefits.
Also add a command line flag for turning use-damage off.
Fixes#242
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Because first frame no window has their pixmap bound, which doesn't
happen in frames after the first. If a window is unmapped in that frame,
the compositor will try to render a window with no pixmap bound if
fading is enabled.
Now we keep track if we are in the first frame, and if that's the case
we skip fading in unmap/destroy.
Fixes#239, bug number 2
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This simplifies the logic a bit since we know a shadow is always bound
(if needed) when the screen is redirected.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
If a window is unmapped during the draw_callback re-run when the screen
is just redirected, that window won't get a chance to acquire a pixmap.
If fading is enabled, the compositor will try to render that window and
crash.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Previously all image stale flags are ignored when processing an unmapped
window. If a window gains a shadow during its fading out transition, the
shadow flag will be set, but shadow won't actually be generated, causing
a NULL pointer dereference during render.
Fixes#239
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Otherwise shadow won't get generated in next critical section, causing
NULL pointer dereference or assertion failure in next render.
Partially fixes#239
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
win_get_name _updates_ the name of the window by querying the X server,
thus potentially changes the behaviour of the compositor when logging is
turned on (e.g. we could fail to detect window name changes, because the
name was blindly updated in a logging call without handling the name change).
We shouldn't do that.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
recheck_focus rejects focus of unmapped windows, so we have to make sure
pending maps of windows are processed before we call recheck_focus.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Convert several places where the window image is bound/unbound directly
to use image flags. Make sure window image updates only happen in one
place.
Remove win_bind_image function since its no longer used after this.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
And a window update flag for mapping the window.
Also make sure related functions consider the case where the given window
has pending updates.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Which includes the pending update flags for the window.
Using an internal struct makes sure the window update flags are opaque outside
of win.c
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
rename map_win, unmap_win, destroy_win to map_win_start,
unmap_win_start, destroy_win_start respectively. To clarify their
intended functions. Also rename the corresponding finish_* functions to
*_finish so they are consistent.
Also some very minor code clean ups.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Instead of doing both unmapping and destroying in the same function,
since that complicates the logic.
Also since now destroy_win handles both the managed and unmanaged cases,
remove destroy_unmanage_win function.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Split it into PIXMAP_STALE and SHADOW_STALE, this allows us to update
pixmaps and shadow images separately.
Also added PIXMAP_NONE and SHADOW_NONE, as redundancy to detect logic
errors.
Convenient constants and functions are provided for updating pixmap and
shadow together.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Instead of pointer to pointer. The two level of pointers were used to
inform the caller the window has been destroyed (pointer set to NULL).
Now, destruction of windows are now signaled by the return value, which
is marked `must_use`.
Problem with taking pointer to pointer is that they tends to pollute the
function signatures a little bit. And we are not using it well anyways.
A lot of the callers passes pointers to local variables to those
functions, so the information about window destruction doesn't actually
bubble up. So, we switch to use just one level of pointers instead.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
It could be hard for Ubuntu/Debian users to find the correct packages
for the dependencies.
Thanks @kgilmer
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
When a window has 0 opacity, it's rendering is skipped completely. Thus
its background isn't blurred.
This commit fixes that.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Dummy backends are backends that doesn't render anything on to the
screen or the target window. But they are still be useful for debug
purposes, and can be useful for other things too.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
blur_kernel_count could be none zero when user set a blur kernel but
didn't enable blur. In that case deinit_render will try to free
elements of blur_kerns_cache, causing a segfault because
blur_kerns_cache is never allocated.
Fixes#209
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
compton built from the git repo often _seems_ to be from a older release,
this change disambiguate the version string.
compton built from the git repo now have version string like this:
'vgit-xxxxx'
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
xerror handler might be called during XCloseDisplay, at which point
session_t is already destroyed, causing a segfault.
Ping #209
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Only render blur with transparency when window is fading in/out.
Otherwise, a window with a set opacity will always have a completely
blurred background.
Fixes#198
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
There were still some artifacts left when multiple semi-transparent
windows are stacked on top of each other.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Instead of rendering into the back buffer, render into a intermediate
texture.
This is a preparation for partial screen updating, which is necessary to
eliminate artifacts visible when using blur and use-damage together.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
In theory, it should be fine. But it causes mesa to stuck in
xcb_wait_for_special_event, indicating X connection setup issues.
Instead of investigating what went wrong in mesa, I choose to apply this
simple fix.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Yuxuan Shui