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This allows us to get damage tracking for free™.
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These allow describing an output's viewport inside the scene-graph.
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When providing non-zero layout-local coordinates to
wlr_scene_render_output, the viewport should be translated by the
given values. However the viewport was translated by the opposite
values: when giving 42,42 the viewport's position would be set to
-42,-42.
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Previously used by attempt_enable_needs_modeset, but this has been
dropped in the previous commit.
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Modesets require a buffer. The DRM backend tried to auto-enable
outputs when a CRTC becomes available in the past, but now that
fails because no buffer is available.
Instead of having this magic inside the DRM backend, a better
approach is to do it in the compositor or in an optional helper.
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On modeset wlr_output will internally allocate a buffer. The
backend will emit a "mode" output event, then wlr_output will
emit a "commit" event.
wlr_output_damage handles the "mode" event by damaging the whole
output, and then handles the "commit" event. However the commit
event has a buffer, so wlr_output_damage rotates the damage in its
ring buffer, thinking the compositor has rendered a frame. The
compositor hasn't rendered a frame, what wlr_output_damage sees is
the internal wlr_output black buffer used for the modeset.
Let's fix this by damaging the whole output in the "commit" event
handler if the mode has changed. Additionally, damage the whole
output after rotating the damage ring buffer.
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drm_connector_set_pending_fb already takes care of this.
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Constify drmModeConnector while at it.
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Don't set the MODE flag when disabling a CRTC. This fixes a NULL
pointer dereference in drm_connector_state_init.
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Previously, we were copying wlr_output_state on the stack and
patching it up to be guaranteed to have a proper drmModeModeInfo
stored in it (and not a custom mode). Also, we had a bunch of
helpers deriving DRM-specific information from the generic
wlr_output_state.
Copying the wlr_output_state worked fine so far, but with output
layers we'll be getting a wl_list in there. An empty wl_list stores
two pointers to itself, copying it on the stack blindly results in
infinite loops in wl_list_for_each.
To fix this, rework our DRM backend to stop copying wlr_output_state,
instead add a new struct wlr_drm_connector_state which holds both
the wlr_output_state and additional DRM-specific information.
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"state" is easily confused with wlr_output_state.
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Fixes: ba0525c5c08b ("surface: drop wlr_surface_state.buffer_resource")
Closes: https://github.com/swaywm/wlroots/issues/3173
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Instead, use wlr_surface_state.buffer only.
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When surface_state_move processes a NULL commit, make sure to
reset state->buffer to NULL instead of leaving behind an old
wlr_buffer.
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This is an internal struct.
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We always return the same wlr_client_buffer as the one passed in,
so no need to return anything.
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Instead of taking a wl_resource as argument, take a wlr_buffer.
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This makes the naming consistent with other resource implementations.
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Move the wlr_subsurface parent link to the subsurface state.
This is a dumb find/replace operation. This shouldn't result in
any behavior change.
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Add a comment to explain the difference.
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Caching frame callback lists is actually the correct behavior, because
if a surface is locked because of e.g. subsurface synchronization,
clients would expect to receive frame done events only after the
pending state is actually committed.
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We can just send a read-only file descriptor instead.
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This exposes a read-only FD with the keymap.
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This function behaves like allocate_shm_file, except it also
returns a read-only FD. This is useful to share the same segment
of memory with many Wayland clients.
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Makes it easier to find out which branch is taken when debugging
issues like [1].
[1]: https://github.com/swaywm/wlroots/issues/3156
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drm_surface_blit returns NULL on error. This can happen e.g. when
the source buffer cannot be imported into EGL.
Closes: https://github.com/swaywm/wlroots/issues/3154
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Closes: https://github.com/swaywm/wlroots/issues/3156
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Add RECT nodes to the scene-graph demo to illustrate how they are used.
Here, we add a solid rectangle behind each surface as a quick-and-dirty
border, handling surface.commit in order to size it appropriately.
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With the addition of a non-surface node type, it was unclear how such
nodes should interact with scene_node_surface_at(). For example, if the
topmost node at the given point is a RECT, should the function treat
that node as transparent and continue searching, or as opaque and return
(probably) NULL?
Instead, replace the function with one returning a scene_node, which
will allow for more consistent behavior across different node types.
Compositors can downcast scene_surface nodes via the now-public
wlr_scene_surface_from_node() if they need access to the surface itself.
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RECT is a solid-colored rectangle, useful for simple borders or other
decoration. This can be rendered directly using the wlr_renderer,
without needing to create a surface.
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This will allow us to create node types which are rendered but not
surface-based, such as a solid color or image.
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Commits named "Fix #XXX" make it pretty complicated to figure out
exactly what the commit is doing from the shortlog. A better place
for issue references is in the extended commit message.
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Depends on [1].
[1]: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/84
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Fixes: d9d8fc1ab9b7 ("render/allocator: re-open GBM FD")
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Using the same DRM file description for the DRM backend and for the
GBM allocator will result in GEM handle ref'counting issues [1].
Re-open the DRM FD to fix these issues.
[1]: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/110
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