We create a renderer for the sole purpose of blitting buffers from a
primary renderer that we might not be able to scan-out from. If we end
up with the pixman renderer, it either won't work becuase it cannot
import dmabufs from the primary renderer, or won't have any effect
because the primary renderer already uses dumb buffers.
We test for DMA-BUF capabilities specifically to make it clear what our
interest is, rather than focusing too much on the pixman renderer.
If init_drm_renderer failed, it would destroy the renderer but would not
set it to NULL, leading to use-after-free.
NULL the renderer after destroying it.
create_immed() is a bit dangerous because on failure, either the
connection is closed or the buffer is silently ignored.
Use create() with a roundtrip to figure out whether the import
succeeded.
Passing the wlr_client_buffer directly has a downsides because a
fresh wlr_buffer pointer is passed each output commit instead of
cycling through existing wlr_buffer objects:
- The FDs are re-imported each time in the backend.
- Any import failure is logged every output commit [1].
- The Wayland backend cannot handle import failures without
roundtripping each output commit [2].
Instead, extract the source buffer from the wlr_client_buffer and
pass that to the backend.
[1]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4836
[2]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4841
If we are trying directly scan-out a shm buffer, we create a temporary
buffer pool to instantiate a wl_buffer from, created in accordance to
our buffers size. If the buffer has an offset, it will end up out of
bounds of the created pool.
Extend the temporary pool by the buffer offset to compensate. Matching
the original pool size does matter unless we want to optimize away the
temporary pool to reduce mappings in the parent compositor.
Perform a primitive garbage collection of buffers that have not been
used in the past 10 seconds, an arbitrarily selected number.
As garbage collection also makes span buffer allocation happen much more
often, logging on allocation activity leads to a lot of log noise so get
rid of that while at it.
The event time used for zwp_tablet_pad_group_v2_send_mode_switch was
tv_nsec / 1000, which is microseconds resetting every whole second.
Use get_current_time_msec to get milliseconds including whole seconds.
With this change vulkan renderer can be automatically chosen in two more cases:
GLES2 renderer is disabled at compile time
GLES2 renderer failed to be created
Main purpose of this change is to automatically choose vulkan as renderer when GLES2 renderer is not enabled.
timeline feature will never be applicable to backends without it, so
don't check it. Before this commit, it would cause timeline to be set
to false if libinput ended up being the last item in the list (which is
the case currently).
We store both queued and current buffers to be able to retain both the
framebuffer currently on screen and the one queued to replace it. From a
re-use perspective, we only care about the last committed framebuffer.
The viewport is only stored in order to be re-used together with the
last committed framebuffer, so do away with the queued/current
distinction and store a single viewport updated every time a commit
completes.
Instead of trying to restore the drm state when the session is activated
again, just disconnect all outputs when the session is deactivated. The
scan that triggers on session activation will rediscover the connectors.
Accessing the output state viewport require a buffer, and that might not
have a state with a buffer when preparing the plane properties for an
atomic commit.
Instead, store the properties at the same time as the fb, and use a
similar mechanism to carry the state around.
We support direct scanout when there is an output and buffer
transform so long as the transforms are the same (so cancel out for the
buffer contents). But we still need to apply the output transform to
the destination box location and size.
If our session is re-activated during scanout, restore_drm_device will
reset planes and then attempt an enabling modeset commit without a
buffer. The new plane transform logic requires a committed buffer to be
present to calculate the boxes if they were not explicitly provided, and
at least amdgpu rejects commits that try to use 0 as default.
Skip updating plane props instead of segfaulting if no buffer is set.
A better fix would be to not rely on restore_drm_device at all and
instead require compositors to modeset in response to session
activation.
Fixes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3912
We've actually been doing the wrong thing this whole time, for v1 of the
protocol, we should set the refresh_nsec field to 0 if the output does
not have a constant refresh rate. However we've been setting it to the
fastest rate instead since eac7c2ad2f
which is incidentally exactly what v2 of the protocol proposes.
So allow advertising v2, and fix v1 to set refresh_nsec to 0.
We were checking whether the damage region was empty before
clipping. However a non-empty damage region can become empty after
clipping. Instead, check whether the clipped region is empty.
Fixes: 4339c37f99 ("backend/drm: clip FB damage")
When setting the primary buffer location for direct scanout, subtract
the offset of that output to put the buffer location in output-relative
coordinates.
Fixes#3910
Currently the headless backend does not actually implement the
wlr_output_test function, causing tests containing output state
unsupported by the headless backend to succeed while committing the same
state will always fail.
This commit fixes that by actually hooking up the already exisiting test
function.
References: https://codeberg.org/river/river/issues/1154
Enable scene-tree direct scanout of a single buffer with various options
for scaling and source crop. This is intended to support direct scanout
for fullscreen video with/without scaling, letterboxing/pillarboxing
(e.g. 4:3 content on a 16:9 display), and source crop (e.g. when
1920x1088 planes are used for 1920x1080 video).
This works by explicitly specifying the source crop and destination box
for the primary buffer in the output state. DRM atomic and libliftoff
backends will turn this into a crop and scale of the plane (assuming the
hardware supports that). For the Wayland/X11/DRM-legacy backends I just
reject this so scanout will be disabled.
The previous behaviour is preserved if buffer_src_box and buffer_dst_box
are unset: the buffer is displayed at native size at the top-left of the
output with no crop.
The change to `struct wlr_output_state` makes this a binary breaking
change (but this works transparently for scene-tree compositors like
labwc after a recompile).
wlr_multi_backend sorts the states it is given and tries to perform
sequential backend-wide commits for each sub-backend with the states
that belong to it.
It did not manage the index correctly for the next iteration, so given N
states for a backend it would perform N backend-wide commits.
Clarify the logic by calculating a length rather than an end pointer and
update the index after each iteration.
This piece of code checks for multi-GPU renderer support, so it
needs to run after the renderer is initialized.
Fixes: 514c4b4cce ("backend: add timeline feature flag")
Closes: https://github.com/swaywm/sway/issues/8382
Since wlr_damage_ring now only works with buffer local coordinates, this
creates an inpedance mismatch for compositors that want to use this
function. Instead of compositors needing to the the conversion itself,
change thu function to take buffer local coordinates directly.
