We are assuming that CRTC_CTM is pass-through, so better ensure it
really is pass-through rather than whatever the previous KMS client left
there.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
We are assuming that CRTC_DEGAMMA_LUT is pass-through, so better ensure
it really is pass-through rather than whatever the previous KMS client
left there.
This too falls under deprecated_gamma_is_set check, because the legacy
gamma could use either GAMMA or DEGAMMA.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
We are assuming that gamma LUT is pass-through, so better ensure it
really is pass-through rather than whatever the previous KMS client left
there.
Unfortunately the legacy ioctl does not offer any way to reset the LUT
without actually crafting an identity LUT.
If the legacy gamma libdrm function indicates the feature is not
supported, do not try to use it again. This avoids hammering the legacy
gamma every frame when deprecated drm_output_set_gamma() is not used.
drm_output_set_gamma() is not updated to check/set this flag in order to
maintain its old behavior.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
We are assuming that CRTC_GAMMA_LUT is pass-through, so better ensure it
really is pass-through rather than whatever the previous KMS client left
there.
Unfortunately, we have old drm_output_set_gamma() API that cms-static
and cms-colord plugins are using. To avoid trampling over them, do not
touch gamma after they did. Those plugins are deprecated, so there is no
reason to make set_gamma work through atomic.
drm_output_set_gamma() is called from weston_compositor_add_output()
through the output_created_signal. This is after drm_output_enable() and
before any KMS modeset or atomic commit on the CRTC. Therefore it is not
possible that there would be any KMS action in flight when
drm_output_set_gamma() is called, and so setting deprecated_gamma_is_set
should be non-racy - like setting CRTC_GAMMA_LUT itself.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
We've passed the paint node deeply enough that we can now use the cached
matrix in it to save some calculations.
Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
Rename it as well.
By passing the paint node we'll have access to the cached buffer to output
matrix later.
Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
Compositor code can use opaque pointer comparison to determine whether
a head belongs to a given backend. Store a backend pointer in struct
weston_head to enable the compositor to select the correct backend
specific output configuration code.
This also allows to use the backend pointer instead of the opaque
backend_id pointer to check whether a head belongs to a backend, so
replace the checks in all to_xyz_head() functions and drop backend_id.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Now that the renderer type is stored in struct weston_renderer,
use that instead of use_pixman to determine the renderer type.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Instead of bailing based on our loosely tracked matrix "type" (that won't
recognize when an operation is reversed by its inverse) use the new
weston_matrix_to_transform to determine if the matrix reasonably matches.
Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
Some monitors expose a selector for the kind of content that will get
displayed, allowing them to optimise their settings for this particular
content type.
I got access to such a monitor, sadly even setting it to game mode
didn’t lower its atrocious latency, but drm_info[1] reports it to be set
correctly so hopefully it’ll work better with other monitors.
[1] https://github.com/ascent12/drm_info
Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
As things are, even when mode=current is specified on the .ini file,
a full modeset is needed (and done), which causes a very noticeable
screen blinking. That is because setting the max_bpc on a connector
needs full modesetting.
The idea here is that if mode=current on the .ini, no modesetting
should be done, so the current max_bpc is programmed into the
connector.
But if a custom max-bpc=... is specified, that will be used instead,
even if mode=current on the .ini
Fixes: https://gitlab.freedesktop.org/wayland/weston/-/issues/660
Signed-off-by: vanfanel <redwindwanderer@gmail.com>
Changing the mode will destoy the GBM surface for the output. As a result all
corresponding BOs are deleted regardless of the drm_fb refcount.
While a commit is pending, the last_state may contain a reference to such a BO.
So delay the mode switch until the commit is finished and the reference is
release.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
It is only enabled by a debug key binding, currently not tested at all,
and is seems it doesn't really work, so let's remove it. This also
removes it from the man page.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
"max bpc" property is meant for working around faulty sink hardware.
Normally it should be set to the maximum possible value so that the
kernel driver has full freedom to choose the link bpc without being
artificially forced to lower color precision.
The default value is 16 because that is a nice round number and more
than any link technology I've heard is using today which would be 12.
Also offer an API set the value, so that weston.ini could be used in the
next patch for sink workaround purposes.
Closes: https://gitlab.freedesktop.org/wayland/weston/-/issues/612
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
As a first step towards heterogeneous outputs, ignore other backends'
heads and outputs. This is done by checking the destroy callbacks for
heads and outputs.
See: https://gitlab.freedesktop.org/wayland/weston/-/issues/268
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Stop plugins from overwriting the struct weston_output::destroy vfunc,
as that will be used by backends to recognize their outputs.
Instead, pass a plugin-specific destroy callback when creating the
virtual output.
See: https://gitlab.freedesktop.org/wayland/weston/-/issues/268
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The outputs, heads, crtcs, and connectors are specific to a drm device and not
the backend in general.
Link them to the device that they belong to to be able to retrieve the
respective device.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
The commits happen per device instead of per backend. The pending state is
therefore per device as well. Allow to retrieve the device from the pending
state.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
The fbs are specific to the device on which they will be displayed. Therefore,
we have to tell which device shall be used when we are creating the fb.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Extract the kms device from the backend to allow a better separation of the
backend and the kms device. This will allow to handle multiple kms devices with
a single drm backend.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
And use it to get a feedback event for when adding scanout tranche.
With this change, I get back a feedback event for dmabuf-feedback
on VC4:
���� tranche: target device /dev/dri/card0, scanout
� ���� format ABGR2101010, modifier LINEAR (0x0)
� ���� format XBGR2101010, modifier LINEAR (0x0)
� ���� format ARGB8888, modifier LINEAR (0x0)
� ���� format ABGR8888, modifier LINEAR (0x0)
� ���� format XRGB8888, modifier LINEAR (0x0)
� ���� format XBGR8888, modifier LINEAR (0x0)
� ���� format RGB565, modifier LINEAR (0x0)
� ���� format YUV420, modifier LINEAR (0x0)
� ���� format YUV422, modifier LINEAR (0x0)
� ���� format YVU420, modifier LINEAR (0x0)
� ���� format YVU422, modifier LINEAR (0x0)
� ���� format NV12, modifier LINEAR (0x0)
� ���� format NV12, modifier BROADCOM_SAND128 (0x700000000000004)
� ���� format NV16, modifier LINEAR (0x0)
� ���� end of tranche
Besides that, it can place a fullscreen state of simple-egl on the
primary plane, which without this change wasn't possible.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Output color profile may be changed in flight. Output basic color
characteristics and EOTF mode cannot yet be changed in flight, but it is
reasonable to assume they could in the future. Therefore the color
outcome data may change in flight as well, which is the basis for HDR
metadata, which needs to be updated as well.
Track the changes to color outcome data with a serial number.
DRM-backend checks the serial number to see if it needs to re-create the
HDR metadata blob. This allows the changes to propagate all the way to
KMS.
The code added here is more of a reminder of what should happen than a
tested path.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This creates a new file for KMS related color code, to avoid making
drm.c even longer.
The moved code was just added in 5151f9fe9e
so the new file copyrights are written based on that.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Program the connector property HDR_OUTPUT_METADATA based on the EOTF
mode of the output.
For now, this changes only the EOTF. The colorimetry and luminance are
left undefined, to be filled in by later patches. This should still be
enough to put a video sink into HDR mode, albeit the response is
probably unknown.
drm_output keeps track of the currently existing blob id. If the blob
contents need to be re-created, this blob would be destroyed and the
field set to zero. In this patch, there is no provision for runtime
changing of HDR metadata, so there is no code doing that.
Destroying the blob at arbitrary times is not a problem, because the
kernel keeps a reference to the data as long as the blob id remains with
KMS.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Check whether HDR_OUTPUT_METADATA property exists on a KMS connector. If
yes, pretend that EDID claims support for all EOTF modes and update the
head supported EOTFs mask accordingly. If not, then only SDR is
possible.
Parsing EDID to take monitor capabilities into account is left for
later.
HDR mode cannot be set without HDR_OUTPUT_METADATA.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
The repaint_data is entirely backend specific. Moreover, it is only used by the
drm backend, while other backends ignore the repaint data.
There will always be only one repaint active, thus, there is no need to pass the
repaint data from the outside.
The repaint_data breaks with the multi-backend series, which calls repaint begin
for all backends to get the repaint_data. The repaint_data of the last backend
will then be passed to all other backend. At the moment, this works, because the
drm backend is the only backend that implements the begin_repaint call.
Another option would be to track the repaint data per backend in the compositor,
but actually, it the backend needs to track state across the calls, it's its own
responsibility.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Specifically log if there were no suitable planes for us to use, or if
we tried to place it on a plane but were told no by the kernel.
Signed-off-by: Daniel Stone <daniels@collabora.com>
When we introduced support for variable zpos, we did so by filtering the
list of acceptable planes and then creating a separate zpos-ordered
list. Now that the planes are already zpos-sorted in the backend list,
and we have more early filtering, we can replace this with a single
plane-list walk.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Walking the format/modifier list to try to find out if our FB is
compatible with the plane is surprisingly expensive. Since the plane's
capabilities are static over the lifetime of the KMS device, cache the
set of planes for which the FB is theoretically
format/modifier-compatible when it's created, and use that to do an
early cull of the set of acceptable planes.
Signed-off-by: Daniel Stone <daniels@collabora.com>
When we first create a drm_fb from a weston_buffer, cache it and keep it
alive as long as the buffer lives. This allows us to reuse the gbm_bo
and kernel-side DRM framebuffer, rather than constantly creating and
destroying them at every repaint. The overhead of doing so (e.g. MMU
updates) can be significant on some platforms.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Currently each drm_fb takes a reference on a client buffer it wraps.
This prevents us from being able to reuse a drm_fb in multiple places
(e.g. two views of the same client buffer) simultaneously, or even back
to back.
Move the buffer reference to the plane state, as preparation for
allowing drm_fb to be cached inside the weston_buffer.
Signed-off-by: Daniel Stone <daniels@collabora.com>
In commit "libweston: add initial dma-buf feedback implementation" we've
added initial support to dma-buf feedback, but it was not using the
feedback from DRM-backend to add useful per-surface feedback.
In this patch we add this. The scanout tranche of the per-surface
feedback is based on the union of formats/modifiers of the primary and
overlay planes available. These are intersected with the
formats/modifiers supported by the renderer device.
Also, it's important to mention that the scene can change a lot and we
can't predict much. So this patch also adds hysteresis to the dma-buf
feedback. We wait a few seconds to be sure that we reached stability
before adding or removing the scanout tranche from dma-buf feedback and
resending them. This help us to avoid spamming clients and leading to
unnecessary buffer reallocations on their end.
Here's an example of what we want to avoid:
1. We detect that a view was not placed in a plane only because its
format is not supported by the plane, so we add the scanout tranche
to the feedback and send the events.
2. A few milliseconds after, the view gets occluded. So now the view
can't be placed in a plane anymore. We need to remove the scanout
tranche and resend the feedback with formats/modifiers optimal for
the renderer device. The client will then reallocate its buffers.
3. A few milliseconds after, the view that was causing the occlusion
gets minimized. So we got back to the first situation, in which the
format of the view is not compatible with the plane. Then we need to
add a scanout tranche and resend the feedback...
This patch is based on previous work of Scott Anderson (@ascent).
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Signed-off-by: Scott Anderson <scott.anderson@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Add enum try_view_on_plane_failure_reasons to help us to keep track of
the reason why promoting view to a plane failed. We also add a variable
to struct weston_paint_node so that we can update this information in
each output repaint.
This will be used in the next commits, in which we add proper surface
dma-buf feedback support.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
The DRM backend uses changes in the cursor view memory address and
surface damage to detect when it needs to re-upload to a cursor plane
framebuffer.
However, when a cursor view is destroyed and then recreated, e.g., when
the pointer cursor surface is updated, the newly created view may have
the same memory address as the just destroyed one. If no new cursor
buffer is provided (because it was attached, committed and used
previously) when this address reuse occurs, then there also isn't any
updated surface damage and the backend doesn't update the cursor plane
framebuffer at all.
To fix this issue utilize the destroy signal to track when the cursor
view is destroyed, and clear the cached cursor_view value in drm_output.
After clearing the cached value, the next cursor view is always
considered new and thus uploaded to the plane properly.
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Remove all the backend code to support drivers without universal planes.
From[1]:
"The code needed to support kernels where DRM does not support uiniversal
planes makes the DRM-backend a little more complicated, because it needs
to create fake planes for primary and cursor. The lifetimes of the fake
planes does not match the lifetime of "proper" planes, which is surprising."
And since the universal planes left the experimetal flag in 2014[2] it is
safe to remove the support now.
[1] https://gitlab.freedesktop.org/wayland/weston/-/issues/427
[2] https://cgit.freedesktop.org/drm/drm-tip/commit/?id=c7dbc6c9ae5c3baa3be755a228a349374d043b5b
Signed-off-by: Igor Matheus Andrade Torrente <igormtorrente@gmail.com>
In commit "libweston: add struct weston_drm_format" struct
weston_drm_format and its helper functions were added to libweston.
Also, unit tests for this API have been added in commit "tests: add unit
tests for struct weston_drm_format".
Start to use this API in the DRM-backend, as it enhances the code by
avoiding repetition and ensuring correctness.
Signed-off-by: Scott Anderson <scott.anderson@collabora.com>
Co-authored-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
This header is for sharing fallback definitions for drm_fourcc.h. A new
test in tests/yuv-buffer-test.c is going to be needing XYUV8888 format,
and more new formats will be expected with HDR supports.
Share these fallback definitions in one place instead of copying them
all over.
All users of drm_fourcc.h are converted to include weston-drm-fourcc.h
instead for consistency: have the same definitions available everywhere.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
96bef0517e "drm-backend: add support for
writeback connectors" started using DRM_MODE_CONNECTOR_WRITEBACK and
DRM_CLIENT_CAP_WRITEBACK_CONNECTORS. These were introduced in libdrm
2.4.95.
According to
https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/311
Ubunut Xenial is the only mentioned distribution that does not provide a
libdrm new enough. I think that is fine to drop now, 2016 was a good
while ago.
Libdrm 2.4.95 also introduced DRM_CLIENT_CAP_ASPECT_RATIO,
DRM_MODE_PICTURE_ASPECT_64_27, DRM_MODE_PICTURE_ASPECT_256_135.
The fallback definitions for the above are dropped.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Recognize writeback connectors and add 'struct drm_writeback'
objects in order to store them.
These objects are created and stored in a list by the time
that DRM-backend is initialized. This list is updated if a
writeback connector dynamically appears or is disconnected.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
The function drm_connector_assign_connector_info() should
not be calling functions to handle drm_head, as connectors
and heads are not the same thing after patch "drm-backend:
move connector data from struct drm_head to struct drm_connector".
Move drm_head specific calls to drm_head_update_info(). This
is more in line with the hierarchy of the objects and also
allow us to drop drm_head pointer from drm_connector.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Instead of calling drmModeObjectGetProperties() each time that we need
the connector properties, it is better to keep a reference for it in
struct drm_connector. This reference is only updated when is necessary.
E.g. hotplug events.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
This is the first step in order to add support for writeback
connector in Weston. We don't want writeback connectors data
to be stored in 'struct drm_head' objects, as these objects are
used to output content and we should not use writeback connectors
for this purpose.
The writeback connectors will be stored in a new 'struct
drm_writeback', but the connector data is common between
'struct drm_head' and 'struct drm_writeback'.
So move connector data from 'struct drm_head' to 'struct
drm_connector'. This helps to avoid code duplication and makes
the code clearer.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
Now that we have a CRTC list in the DRM-backend, we can
iterate through it and look for the CRTCs that do not have
assigned outputs in order to find unused CRTCS.
So we can drop unused_crtcs from struct drm_backend and also
drop the functions drm_backend_update_unused_outputs() and
wl_array_remove_uint32().
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
There are no 'struct drm_output' for CRTCs that are not active.
Also, CRTC data lives in 'struct drm_output'. This is causing
us some trouble, as the DRM-backend needs to program those
unnactive CRTCs to be off.
If the DRM-backend had the reference for every CRTC (being
active or not), it would make certain functions (e.g.
drm_pending_state_apply_atomic()) more simple and efficient.
Move CRTC data from 'struct drm_output' to 'struct drm_crtc',
as this is the first step to allow the DRM-backend to have
references for every CRTC.
Also, add list of CRTCs to DRM-backend object. Now the
DRM-backend is responsible for allocating/deallocating the CRTC
objects. The outputs will only reference, init and fini the CRTCs
in this list.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
