Age | Commit message (Collapse) | Author |
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We weren't logging all of the flags, which made debugging more
difficult.
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Groundwork for the following commits. The goal is to allow users
to specify their own wlr_output_state instead of wlr_output.pending.
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backend/drm: use serial_str instead
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This allows the make/model/serial to be NULL when unset, and allows
them to be longer than the hardcoded array length.
This is a breaking change: compositors need to handle the new NULL
case, and we stop setting make/model to useless "headless" or
"wayland" strings.
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Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3434
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This information is stored in wlr_swapchain, no need to duplicate
it.
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Prior to [1], if an entry in a DRM format set was different than a
single LINEAR modifier, implicit modifiers were always allowed. This
has changed and now implicit modifiers are only allowed if INVALID
is in the list of modifiers.
So now we can safely enable explicit modifiers for cross-GPU imports,
without risking receiving buffers with an implicit modifier. This
should improve perf a bit on setups where two GPUs from the same vendor
are used.
This fixes the first bullet point from [2].
[1]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3231
[2]: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3331
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Maintaining our internal table up-to-date is tedious: one needs to
manually go through the PnP ID registry [1] and check whether we're
missing any entry.
udev_hwdb already has an API to fetch a manufacturer name from its
PnP ID. Use that instead.
[1]: https://uefi.org/pnp_id_list
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Ensures there is no field left to its previous undefined value after
calling an init function.
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The lease_fd is currently being leaked to child processes
Link: https://github.com/swaywm/sway/issues/4286#issuecomment-1065987957
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This has been added in [1] and allows us to close buffer handles
without manually calling drmIoctl.
[1]: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/192
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This avoids open-coding our own logic. The resulting code is more
readable.
References: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/146
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This helper is responsible for listening for new DRM devices and
create new child DRM backends as necessary.
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wlroots picks names for all outputs, but it might be desirable for
compositor to override it.
For instance, Sway will use a headless output as a fallback in
case no outputs are connected. Sway wants to clearly label the
fallback output as such and label "real" headless outputs starting
from HEADLESS-1.
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Rather than repeatedly trying to import DMA-BUFs which cannot be
scanned out, mark the failed ones with a special "poison" marker.
Inspired from [1].
[1]: https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/731
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drmModeAddFB2 doesn't support explicit modifiers. Only accept INVALID
which indicates an implicit modifier and LINEAR which may indicate
that GBM_BO_USE_LINEAR has been used.
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See [1] for the motivation.
[1]: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/75
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Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3181
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Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3183
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They are never used in practice, which makes all of our flag
handling effectively dead code. Also, APIs such as KMS don't
provide a good way to deal with the flags. Let's just fail the
DMA-BUF import when clients provide flags.
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When a connector ID is specified in a hotplug event, don't scan all
connectors. Only scan the connector that has changed.
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drmModeCreatePropertyBlob cannot create zero-sized blobs, that
fails with EINVAL.
Closes: https://github.com/swaywm/wlroots/issues/3297
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The BO handle table exists to avoid double-closing a BO handle,
which aren't reference-counted by the kernel. But if we can
guarantee that there is only ever a single ref for each BO handle,
then we don't need the BO handle table anymore.
This is possible if we create the handle right before the ADDFB2
IOCTL, and close the handle right after. The handles are very
short-lived and we don't need to track their lifetime.
Because of multi-planar FBs, we need to be a bit careful: some
FB planes might share the same handle. But with a small check, it's
easy to avoid double-closing the same handle (which wouldn't be a
big deal anyways).
There's one gotcha though: drmModeSetCursor2 takes a BO handle as
input. Saving the handles until drmModeSetCursor2 time would require
us to track BO handle lifetimes, so we wouldn't be able to get rid
of the BO handle table. As a workaround, use drmModeGetFB to turn the
FB ID back to a BO handle, call drmModeSetCursor2 and then immediately
close the BO handle. The overhead should be minimal since these IOCTLs
are pretty cheap.
Closes: https://github.com/swaywm/wlroots/issues/3164
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Found via scan-build
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As found in e.g. the Steam Deck.
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Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
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This reverts commit ea7357b70366588069c83f158e6a4eb2d3a702b3.
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This reverts commit d6be1d68b7d0542efa4dc2d19d57531484fe330a.
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drmModeAddFB2 doesn't support explicit modifiers. Only accept INVALID
which indicates an implicit modifier and LINEAR which may indicate
that GBM_BO_USE_LINEAR has been used.
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See [1] for the motivation.
[1]: https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/75
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Instead of ensuring the renderer and allocator are initialized in each
backend, do it in wlr_backend_autocreate. This allows compositors to
create backends without any renderer/allocator if they side-step
wlr_backend_autocreate.
Since the wlr_backend_get_renderer and backend_get_allocator end up
calling wlr_renderer_autocreate and wlr_allocator_autocreate, it sounds
like a good idea to centralize all of the opimionated bits in one place.
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Expose the panel orientation with wlr_drm_connector_get_panel_orientation.
Leave it to the compositor to consume this information and configure the
output accordingly.
Closes: https://github.com/swaywm/wlroots/issues/1581
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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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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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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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Using GBM to import DRM dumb buffers tends to not work well. By
using GBM we're calling some driver-specific functions in Mesa.
These functions check whether Mesa can work with the buffer.
Sometimes Mesa has requirements which differ from DRM dumb buffers
and the GBM import will fail (e.g. on amdgpu).
Instead, drop GBM and use drmPrimeFDToHandle directly. But there's
a twist: BO handles are not ref'counted by the kernel and need to
be ref'counted in user-space [1]. libdrm usually performs this
bookkeeping and is used under-the-hood by Mesa.
We can't re-use libdrm for this task without using driver-specific
APIs. So let's just re-implement the ref'counting logic in wlroots.
The wlroots implementation is inspired from amdgpu's in libdrm [2].
Closes: https://github.com/swaywm/wlroots/issues/2916
[1]: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/110
[2]: https://gitlab.freedesktop.org/mesa/drm/-/blob/1a4c0ec9aea13211997f982715fe5ffcf19dd067/amdgpu/handle_table.c
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Add render/allocator/ and include/render/allocator/ to hold
everything allocator-related.
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The Coordinated Video Timings (CVT) spec [1] defines two types of
timings: the "CVT standard CRT" timings and the "CVT reduced blanking"
timings (see section 3.6).
The standard CRT timings include pauses in the video stream to allow
CRT displays to reposition their electron beam at the end of each
horizontal scan line [2]. While this was desirable a few decades ago,
nowadays we can just generate a CVT reduced blanking timing by default.
wlroots users can still set full custom DRM modes via
wlr_drm_connector_add_mode.
[1]: https://glenwing.github.io/docs/VESA-CVT-1.2.pdf
[2]: https://en.wikipedia.org/wiki/Coordinated_Video_Timings#Reduced_blanking
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To retrieve the formats, an allocated crtc is required. If there is no
currently no crtc available, try to allocate it. This reproducable by
having a disabled output and going through a suspend cycle with amdgpu.
On start CRTCs look like this:
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1099] Reallocating CRTCs
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1110] State before reallocation:
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'DP-1' crtc=0 state=1 desired_enabled=1
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'DP-2' crtc=1 state=1 desired_enabled=1
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'DVI-D-1' crtc=-1 state=0 desired_enabled=0
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1167] State after reallocation:
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'DP-1' crtc=0 state=1 desired_enabled=1
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'DP-2' crtc=1 state=1 desired_enabled=1
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'DVI-D-1' crtc=-1 state=0 desired_enabled=0
where DP-1 is than disabled. After suspend/resume, allocation turns into:
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1099] Reallocating CRTCs
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1110] State before reallocation:
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'DP-1' crtc=-1 state=1 desired_enabled=0
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'DP-2' crtc=1 state=3 desired_enabled=1
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116] 'DVI-D-1' crtc=-1 state=0 desired_enabled=0
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1167] State after reallocation:
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'DP-1' crtc=-1 state=1 desired_enabled=0
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'DP-2' crtc=1 state=3 desired_enabled=1
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174] 'DVI-D-1' crtc=-1 state=0 desired_enabled=0
where the crtc for DP-1 is now NULL. Trying to enable the output results
in:
10:43:36.906 [DEBUG] [sway/config/output.c:351] Turning on output DP-1
10:43:36.906 [DEBUG] [sway/config/output.c:360] Set preferred mode
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [sway/config/output.c:366] Preferred mode rejected, falling back to another mode
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [DEBUG] [sway/config/output.c:400] Auto-detected output scale: 1.000000
10:43:36.907 [DEBUG] [sway/config/output.c:430] Committing output DP-1
10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
10:43:36.907 [ERROR] [sway/config/output.c:435] Failed to commit output DP-1
where the primary format can't be queried since there is no crtc
allocated for the connector. Allocating the connector inside
drm_connector_get_primary_formats() fixes this issue. This is possible
since the only user of get_primary_formats() is the swapchain allocation
function, which is only called on output enable. Do the same thing for
the cursor formats in case the user queries them before the output is
enabled.
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This allows the kernel to access our buffer damage. Some drivers
can take advantage of this, e.g. for PSR2 panels (Panel Self
Refresh) or for transfer over USB.
Closes: https://github.com/swaywm/wlroots/issues/1267
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