Show the fractional scale if we have one, and pixels.
Only Wayland has fractional scales, and for monitors, we have
to derive it from the logical and physical resolution of the
monitor. Not ideal, but it works.
The first time this function is called, has_xdg_output() returns
true, but haven't yet received all the xdg-output events, so wait
for that to be done. Otherwise, the logical size is 0, and nothing
useful comes from that.
This fixes a problem that is apparent in
https://bugzilla.mozilla.org/show_bug.cgi?id=1869724, but that also
reproduces on any GTK application as described in
https://bugzilla.mozilla.org/show_bug.cgi?id=1869724#c16.
xdg_output sizes might be physical if the compositor doesn't scale them,
it seems. So to report the correct logical geometry in GDK pixels, we
need to detect this case. We do this by checking whether the wl_output
size matches the xdg_output size.
According to the Mesa developers, the correct way to determine
disjointness is to check the actual inode of the fd because dup()ing can
cause these duplications to happen when planes are carelessly copied or
when planes are sent over dbus or other unix sockets.
Related: https://bugs.webkit.org/show_bug.cgi?id=267578
We can reach the code that removes the item from the hash table
before or after the weak unref has triggered. Just leave the
weakref in place and let it do its thing, if it hasn't gone
off yet. That matches what we do in free.
Fixes: #6377
We do gc in a timeout, when an arbitrary GL context might be
current, so we need to make sure its ours and we don't free
random textures in another context.
Fixes: #6366
Window handles allow windows to be dragged from maximized to restored,
but when the window is fullscreen they do nothing. With this change,
windows will be unfullscreened when dragged.
By implementing support for `GdkDmabufTextureBuilder` and
`GstVideoInfoDmaDrm`. This allows zero-copy video playback on Wayland
when paired with hardware video decoding.
Can be tested with `gtk4-demo --run=video_player`
We keep various pieces of double-buffered state on our side,
and then explicitly sync it over to the Wayland side.
Add a function to find out if we have any.
Count dead pixels in textures (ie the number of pixels in GPU
textures that are no longer backed by an alive GdkTexture object),
and when the there's too many, do a gc before rendering the next
frame.
Count the uses of cached texture - from the device (via the linked
list) and from the texture (via render data / weak ref), and only
free the item once the use count reaches zero.
Instead of forever running a timeout to do gc, ensure the timeout
is scheduled whenever we render a frame (this is done by calling
gsk_gpu_device_maybe_gc () before gsk_gpu_frame_render (), and
gsk_gpu_device_queue_gc () after).
Read the GSK_CACHE_TIMEOUT environment variable to override the
default 15s timeout for cache gc. This is mainly meant for debugging.
Since we don't really need two knobs, reuse the gc timeout value
for the max age of items too.
The node processing wasn't skipping 0-size nodes when using the
uber shader, leading to assertions down the road. Since the ngl
renderer doesn't use uber shaders, this only affects vulkan.
Test included.
Fixes: #6370
