A quick search on GitHub showing the _COMPTON_SHADOW is actively being
used (most noteably, by polybar). It is not a difficult thing to support,
and it doesn't have that much runtime overhead. So remove the option
that guards this feature, make it enabled by default.
(Side note, I saw lots of people putting this option in their config
files, but this is actually a command line only option.)
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>
Also fill the center of parsed kernel with 1. This shouldn't change the
behavior of the old backends since they will modify the center of the
kernels.
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>
Previously we were using glibc's strtod function to parse floating point
numbers. The problem is, strtod is locale dependent. Meaning 7,7 might
be parsed as two numbers (7 and 7) in one locale, and parsed as one
number (7 point 7) in another locale. This is undesirable.
We need to set the locale to a value we know to make number parsing
consistently. We could use setlocale(), but that is not thread-safe. We
can also use uselocale(), which is thread-safe, but doesn't cover strtod
(Yeah, some of the locale-aware functions only acknowledge the global
locale, not the thread local one).
So in frustration, I just wrote a simple floating point number parser
myself. This parser obviously doesn't cover all cases strtod covers, but
is good enough for our needs.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Move filling winopts with default values to after command line options have
been parsed, not after parsing the config file. This is more intuitive.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
* Pass a options_t, not session_t
* Slightly improve error handling when setting vsync method via dbus
The goal here is to limit the scope of what a given function can access.
And session_t contains basically everything, so don't pass it around.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
* string functions mstr*() are moved to string_utils.c
* allocation wrappers are moved to utils.h
* printf_* functions are moved to log.h
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This cause certain window types to be ignored in deciding whether the
screen should be redirected after being unredirected.
Fixes#58
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Make sure the wintype options are properly initialized even when there
is no config file specified/supported.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Multipass blur is not properly implemented for xrender backend. There is
visible artifacts when it is used. And it is quite difficult to
implement correctly and efficiently for the xrender backend.
Print a warning message for multipass blur so we can survey whether it
is actually been used.
No functionality is removed in this commit.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
IANAL, but I think I am allowed to add missing copyright notices for
someone else. And I did my best job using git history to figure out who
wrote which functions. So I hope everything is fine.
Re-did the painting logic, and document it.
It is unclear to me what is the previous painting logic. But the current
one is basically this:
1. Go through all windows top to bottom, and put visible windows (not
unmapped, opacity > 0, etc) into a linked list, from bottom to top
2. Accumulate a region of ignore on each window, which is basically the
region of screen that is obscured by all the windows above current
one.
3. Paint all the visible windows from bottom to top. Subtract the region
of ignore from the painting region. If we need to paint shadow, we
subtract the body of the window from the shadow painting region too,
because we don't want shadow behind the window.
4. region of ignore is invalidated when window stack change, an
window on top moved or changed shape, when window changed between
opaque and transparent, etc.
Notes:
It is unclear whether all the different shapes of a window (extents,
noframe, border, bounding shape, etc) are calculated correctly or not.
It is unclear if window shape related events are handled correctly or
not. Need more testing.
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
