86 Commits

Author SHA1 Message Date
Sebastian Wick
918dd0c293 wayland/buffer: Do not guard explicit sync releases by buffer->resource
The buffer resource doesn't need to exist for a timeline to exist so we
still have to send the timeline release. Only guard the
wl_buffer_send_relase call.

Fixes: e8b890ab53 ("wayland: Implement linux-drm-syncobj-v1")
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4157>
2024-12-06 08:56:23 +00:00
Jonas Ådahl
85d2d49499 wayland/surface: Unconditionally set scanout destination rect
The cogl_scanout_get_dst_rect() fell back on the buffer dimensions as
the destination rectangle when nothing was explicitly set. This,
however, is not necessarily correct. For example, if a buffer is larger
the CRTC resolution, but the surface is scaled to exactly match the CRTC view,
the expected destination size should match the CRTC resolution, not the
buffer dimension, which would be the case if no explicit destination was
set.

In meta_wayland_try_aquire_scanout() we're in a good position to
determine the destination rect in the CRTC primary plane, since we have
all the prerequisits, i.e. that the surface effectively covers the whole
CRTC, the actor allocation box (the non-black border part), the scale
and transform of the view.

This tweaks the CoglScanout API a bit to make it explicit that the
dst_rect must be unconditionally provided, and removes the fallback to
the buffer dimension as the destination rectangle, which sometimes
resulted in a destination rectangle being larger than the primary plane
itself, resulting in clipping and incorrect scaling.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/3773
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4147>
2024-11-27 20:18:31 +00:00
Jonas Ådahl
2149427f4a wayland/buffer: Also pass src/dst rect when trying to scanout EGLImage
Do the same as in the DMA buffer case, and just pass it forward.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4147>
2024-11-27 20:18:31 +00:00
Michel Dänzer
6d21b5151e Move MetaDrmTimeline to src/common
There's nothing Wayland specific about it.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3876>
2024-08-30 21:07:16 +00:00
Bilal Elmoussaoui
a05caa6338 cogl/texture2d: Rename from_egl_image constructor
Similar to the from_egl_image_external one, to give it the correct
namespace

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3910>
2024-08-01 11:06:33 +00:00
Bilal Elmoussaoui
97c43f9eec cogl/egl: Move get_egl_display to Context
Allows us to get rid of the extra header

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3910>
2024-08-01 11:06:33 +00:00
Bilal Elmoussaoui
1f255be055 cogl: Properly export required functions by cogl-pango
Needed for moving cogl-pango out of tree

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3909>
2024-07-30 20:20:45 +00:00
Michel Dänzer
c25f6f2ded wayland/buffer: Pass g_object_unref to g_ptr_array_new_with_free_func
The release_points array holds pointers to MetaWaylandSyncPoint objects.

Fixes leaking references (and ultimately the underlying memory) for the
array elements.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/3442
Fixes: e8b890ab53a6 ("wayland: Implement linux-drm-syncobj-v1")
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3710>
2024-04-19 10:32:38 +00:00
Jonas Ådahl
0b91d22848 common/cogl-drm-formats: Split out format to string helper
It means it can be included in places that assume cogl and everything it
involves shouldn't be included, e.g. meta-renderer-native-gles3.c.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3304>
2024-04-16 21:05:09 +00:00
Austin Shafer
e8b890ab53 wayland: Implement linux-drm-syncobj-v1
This implements the explicit sync protocol linux-drm-syncobj-v1. This
works by importing a DRM syncobj timeline and importing/exporting fds
to/from the sync points on the timeline corresponding to buffer acquire
and release. We take fds for sync points provided during a surface
commit and use them to delay transaction application, and fetch fds
from Cogl to signal when we are done using a particular buffer.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3300>
2024-03-28 13:28:08 -04:00
Ray Strode
3f5bf42ab6 wayland/buffer: Don't assert mutter supports all shm formats
On big endian architectures the mapping of drm formats to cogl
formats is significantly trimmed compared to on little endian
architectures.

meta_wayland_init_shm tries a bunch of formats, including some
that just aren't mapped on e.g. s390x.

The code asserts the mapping will exist, however, leading to
crashes when Xwayland starts.

This commit makes failure to find a mapping non-fatal.

Suggested by Jonas Ådahl.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3672>
2024-03-27 10:16:47 -04:00
Robert Mader
adc776d0d7 crtc/kms: Pass on src and dst rects to primary plane assignments
This allows us to pass on the related data from CoglScanouts.

If dst_rect does not match the mode, we assume that not covered areas
are opaque black - usually black bars around a centered surface.

While such driver behaviour does not appear to be documented (well) yet,
it seems to be followed by all known existing drivers and is used in a
similar way in ChromeOS.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3177>
2024-02-10 17:41:12 +00:00
Robert Mader
52c4b85161 cogl: Turn CoglScanout into an object
We need an object to hold additional scanout related information, such
as scaling and positioning data. Turn CoglScanout into such an object,
moving the interface into CoglScanoutBuffer.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3177>
2024-02-10 17:41:12 +00:00
Robert Mader
a422ae022b wayland/buffer: Move scanout lifetime handling
There doesn't seem to be a good reason to keep this code in
`MetaWaylandSurface`. Moving it to `MetaWaylandBuffer` cleans things
up and will allow us to tread buffers differently depending on their
type.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3559>
2024-02-02 17:52:30 +01:00
Robert Mader
03a98343d2 wayland/dma-buf: Take MetaWaylandBuffer in try_acquire_scanout
And do some minor variable order cleanup while on it.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3559>
2024-02-02 17:40:37 +01:00
Sebastian Wick
59d4343057 wayland-buffer: Enable YCbCr support for wayland shm
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3371>
2023-12-20 23:51:14 +00:00
Sebastian Wick
c8f4c85bfb wayland-buffer: Support MultiTexture formats via wayland shm
Finding the shm offset and shm stride for each plane is the main issue.
The rest is just creating multiple textures for each plane.

One assumption is that shm planes are always contiguous in memory so the
next plane comes directly after the size of the current plane.

The size of a plane is determined by the height and stride. There is
only a single stride parameter for shm buffers but we assume that the
first plane is always non-subsampled which gives us a number of "logical
elements" on one line (stride / bpp of the first plane). The stride of
the other planes is then the number of logical elements devided by the
subsampling factor and multiplied by the bpp of the plane.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3371>
2023-12-20 23:51:14 +00:00
Sebastian Wick
97c1d19017 wayland-buffer: Use MetaFormatInfo to find supported formats
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3280>
2023-11-22 12:11:38 +00:00
Ivan Molodetskikh
2d1fc65b3a Adjust COGL_TRACE names to improve automatic processing
In profilers with a timeline or flame graph views it is a very common
scenario that a span name must be displayed in an area too short to fit
it. In this case, profilers may implement automatic shortening to show
the most important part of the span name in the available area. This
makes it easier to tell what's going on without having to zoom all the
way in.

The current trace span names in Mutter don't really follow any system
and cannot really be shortened automatically.

The Tracy profiler shortens with C++ in mind. Consider an example C++
name:

SomeNamespace::SomeClass::some_method(args)

The method name is the most important part, and the arguments with the
class name will be cut if necessary in the order of importance.

This logic makes sence for other languages too, like Rust. I can see it
being implemented in other profilers like Sysprof, since it's generally
useful.

Hence, this commit adjusts our trace names to look like C++ and arrange
the parts of the name in the respective order of importance.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3402>
2023-11-22 11:46:07 +00:00
Bilal Elmoussaoui
655b4a9c75 Port to MtkRegion
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3292>
2023-11-03 11:27:52 +00:00
Bilal Elmoussaoui
863163cc6e cogl: Port Texture* away from CoglObject
- Make Texture a parent GObject class and move the vtable funcs as vfuncs
instead of an interface as we would like to have dispose free the TextureLoader.
- Make the various texture sub-types inherit from it.
- Make all the sub-types constructors return a CoglTexture instead of their respective
specific type. As most of the times, the used functions accept a CoglTexture,
like all the GTK widgets constructors returning GtkWidget.
- Fix up the basics of gi-docgen for all these types.
- Remove CoglPrimitiveTexture as it is useless: It is just a texture underhood.
- Remove CoglMetaTexture: for the exact same reason as above.
- Switch various memory management functions to use g_ variant instead of the cogl_ one

Note we would still want to get rid of the _cogl_texture_init which is something
for the next commit

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3193>
2023-10-29 21:16:24 +00:00
Bilal Elmoussaoui
c1e6948e42 cogl: Port Bitmap away from CoglObject
We still need to use set_qdata_full as CoglBitmapPixbuf would free
the data itself by unrefing the pixbuf

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3193>
2023-10-29 21:16:24 +00:00
Bilal Elmoussaoui
918ae0f4d4 mutter: Replace cairo_rectangle_int_t with MtkRectangle
Note: the various helpers in boxes.c were not ported yet, see the next
commit. This was intentionally done to simplify the porting process

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3128>
2023-08-30 16:46:13 +02:00
Sandro Bonazzola
ff4d87727b Update license access method
Dropped obsolete Free Software Foundation address pointing
to the FSF website instead as suggested by
https://www.gnu.org/licenses/gpl-howto.html
keeping intact the important part of the historical notice
as requested by the license.

Resolving rpmlint reported issue E: incorrect-fsf-address.

Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3155>
2023-08-30 08:48:23 +02:00
Niels De Graef
3dd9f15eba shaped-texture: Start using MetaMultiTexture
To be able to later support more complex YUV formats, we need to make
sure that MetaShapedTexture (the one who will actually render the
texture) can use the MetaMultiTexture class.

Co-Authored-By: Robert Mader <robert.mader@collabora.com>
Co-Authored-By: Daniel van Vugt <daniel.van.vugt@canonical.com>
Co-Authored-By: Sebastian Wick <sebastian.wick@redhat.com>
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2191>
2023-07-25 21:24:35 +00:00
Robert Mader
efe884a97f wayland: Remove DRM_FORMAT_MOD_INVALID defines
In both cases we already unconditionally import drm_fourcc.h and all
distros shipping recent Mutter should by now have versions of that file
containing MOD_INVALID.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3065>
2023-07-19 10:39:55 +00:00
Robert Mader
ae88e13c5a wayland/buffer: Clean up format map
Use the newly introduced opaque formats where appropriate, allowing us
to drop the custom components handling.

Also use pre-mult alpha. This may slightly improve upload times
and should generally be more correct.

Tested with `weston-simple-shm`, ensuring the alpha channel still gets
ignored for opaque formats, and `gradient-test` from
https://gitlab.freedesktop.org/jadahl/wayland-test-clients

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3065>
2023-07-19 10:39:55 +00:00
Robert Mader
4a5a31edc6 mutter: Remove stray spaces
To silence code-style-check complains.

Fixes d44f02ba6427ae583ad9d4a62668461355ec08fa

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3018>
2023-05-24 14:16:41 +02:00
Bilal Elmoussaoui
d44f02ba64 mutter: Cleanup gi-docgen annotations
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2939>
2023-05-22 15:47:37 +00:00
Daniel van Vugt
46e1ede687 wayland/buffer: Avoid spamming the log when a buffer is not scanoutable
It's not really an error and we recover seamlessly.

If someone really wants to check if/why direct scanout is failing then
they can still use `env MUTTER_DEBUG=render,kms`.

Fixes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2702
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2918>
2023-03-20 07:22:03 +00:00
Jonas Ådahl
02b1cfe08f onscreen/native: Handle unexpected scanout failures async
We test direct client buffer scanout using a TEST_ONLY commit on atomic,
and with various conditions in non-atomic, but if we end up failing to
actually commit despite this, handle the fallout asynchronously. What
this means is that we'll reschedule a new frame immediately.

For this to work, the same scanout buffer needs to be avoided for the
same CRTC. This is done by using the newly added signal on the
CoglScanout object to let the MetaWaylandBuffer object mark the current
buffer as non-working for the onsrceen that it failed on. This allows to
re-try buffers on the same onscreen when new ones are attached.

This queues a full damage, since we consumed the qeued redraw rect. The
redraw rect wasn't lost - it was accumulated to make sure the whole
primary plane was redrawed according to the damage region, whenever we
would end up no longer doing direct scanout, but this accumulation only
works when we're not intentionally stopping to scanout. For now, lets
just damage the whole view, it's just an graceful fallback in response
to an unexpected error anyway.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2854>
2023-03-01 23:57:32 +00:00
Jonas Ådahl
2731f0cda4 wayland: Setup and use ownership chains
As elsewhere, make sure objects that need to have a ownership up to the
context, and use this ownership chain to find relevant components, such
as the backend or the Wayland compositor object instance.

wayland/data-device: Hook up data devices to seats

They are tied to a seat - make that connection in struct fields too, so
that related objects can get to the context via it.

wayland: Don't get Wayland compositor via singleton getter

This means via the ownership chain or equivalent.

xwayland: Hook up manager to Wayland compositor

Same applies to the drag-n-drop struct.

xwayland: Make X11 event handling compositor instance aware

This avoids finding it via singletons in the callee.

xwayland: Don't get Wayland compositor from singleton

xwayland: Pass manager when handling dnd event

window/xwayland: Don't get Wayland compositor from singleton

xwayland/grab-keyboard: Don't get backend from singleton

xwayland: Don't get backend from singleton

wayland: Always get the backend from the context

This means traveling up the ownership chain or equivalent when
necessary.

wayland: Hook up data devices, offers and sources to the compositor

This allows tying them to a context without going through any
singletons.

wayland: Don't get display from singleton

xwayland: Don't get display from singleton

tablet: Don't get display from singleton

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2718>
2022-12-17 15:13:48 +01:00
Robert Mader
28a3da8d28 wayland/buffer: Add 'render' debug prints
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2680>
2022-12-09 20:14:26 +00:00
Michel Dänzer
05efcb4b21 wayland/surface: Overhaul handling of buffer use count
Move the use count from a separate MetaWaylandBufferRef struct to the
MetaWaylandBuffer class, and remove the former.

The buffer use count is now incremented already in
meta_wayland_surface_commit, since the Wayland protocol defines the
buffer to be in use by the compositor at that point. If the buffer
attachment ends up being dropped again before it is applied to the
surface state (e.g. because another buffer is committed to a
synchronized sub-surface before the parent surface is committed),
the use count is now decremented, and a buffer release event is sent if
the use count drops to 0.

Buffer release events were previously incorrectly not sent under these
circumstances. Test case: Run the weston-subsurfaces demo with the -r1
and/or -t1 command line parameter. Resize the window. Before this
change, weston-subsurfaces would freeze or abort after a few resize
operations, because mutter failed to send release events and the
client ran out of usable buffers.

v2:
* Handle NULL priv->buffer_ref in
  meta_wayland_cursor_surface_apply_state.
v3:
* Remove MetaWaylandBufferRef altogether, move the use count tracking
  to MetaWaylandBuffer itself. Much simpler, and doesn't run into
  lifetime issues when mutter shuts down.
v4:
* Warn if use count isn't 0 in meta_wayland_buffer_finalize.
* Keep pending_buffer_resource_destroyed for attached but not yet
  committed buffers. If the client attaches a buffer and then destroys
  it before commit, we ignore the buffer attachement, same as before
  this MR.
v5:
* Rebase on top of new commit which splits up surface->texture.
* MetaWaylandSurfaceState::buffer can only be non-NULL if
  ::newly_attached is TRUE, simplify accordingly.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1880>
2022-12-01 17:23:34 +01:00
Michel Dänzer
79dc41499d wayland/surface: Call meta_wayland_buffer_attach from surface commit
Preparation for potentially calling meta_wayland_transaction_apply some
time after surface commit, in which case doing it in the former would be
too late: The client may legally destroy the attached wl_buffer
immediately after commit, in which case meta_wayland_buffer_attach would
spuriously fail and disconnect the client (or possibly even crash mutter
due to NULL error).

Requires splitting up the surface texture between protocol and output
state, and propagating from the former to the latter via
MetaWaylandSurfaceState.

v2: (Jonas Ådahl)
* Move meta_wayland_surface_get_texture call to separate line.
* Use g_autoptr for GError.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1880>
2022-12-01 12:41:32 +01:00
Michel Dänzer
416285d1b7 wayland/dma-buf: Add meta_wayland_dma_buf_fds_for_wayland_buffer
And call it from meta_wayland_buffer_realize. This makes dma-buf fds
available for EGL image type buffers as well.

v2:
* Move buffer->dma_buf.dma_buf assignment value to next line.
  (Jonas Ådahl)

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1880>
2022-12-01 09:40:38 +01:00
Carlos Garnacho
9c402bd091 wayland: Ensure to remove destroy listener for MetaWaylandBuffer
Avoid the chance of invalid memory access by leaving the wl_listener
behind when handling the destroy notification.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2588>
2022-08-23 17:06:07 +00:00
Jonas Ådahl
2cb7499735 wayland: Add single pixel buffer support
The "single pixel buffer" Wayland protocol extension provides a way for
clients to create 1x1 buffers with a single color, specified by
providing the color channels (red, green and blue) as well as the
alpha channel as a 32 bit unsigned integer.

For now, this is turned into a 1x1 texture. Future potential
improvements is to hook things up to the scanout candidate logic and
turn it into a scanout capable DMA buffer.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2246>
2022-08-02 12:19:42 +00:00
Jonas Ådahl
75ec27966d wayland/buffer: Only query Wayland EGL buffer if display bound
It's not allowed to call eglQueryWaylandBuffer() if the call to
eglBindWaylandDisplay() failed, and will result in an assert being hit
in mesa if called.

Avoid that by keeping track whether we succeeded to bind, and only
attempt to realize a legacy EGL wl_buffer if binding succeeded.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2415>
2022-05-17 10:09:27 +00:00
Jonas Ådahl
47375897a5 wayland/shm: Add support for ABGR8888 and XBGR8888 formats
This avoids shuffling bits for clients drawing in these formats.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2200
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2352>
2022-03-30 14:43:10 +00:00
Jonas Ådahl
8a2fcf3be0 wayland: Use new KMS update test API to try acquiring scanout
This significantly increases the chance of a fullscreen surface buffer
being scanned out instead of being painted via composition. This is
assuming the client supports the DMA buffer feedback Wayland protocol.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2146>
2022-01-05 20:00:36 +00:00
Jonas Ådahl
6ba86366b3 drm-buffer: Replace 'use-modifier' boolean with flags
This lets us add more customization to the buffer instance without
adding more boolean arguments.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1854>
2021-10-18 17:33:33 +02:00
Jonas Ådahl
10c4bc6e3f drm-buffer: Create from MetaDeviceFile instead of MetaKmsDevice
The DRM buffers aren't really tied to mode setting, so they shouldn't
need to have an associated mode setting device. Now that we have a
device file level object that can fill this role, port over
MetaDrmBuffer and friends away from MetaKmsDevice to MetaDeviceFile.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1828>
2021-07-07 21:03:26 +02:00
Dor Askayo
80fd030f10 onscreen/native: Move function declaration to the correct header file
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1715>
2021-02-09 08:27:11 +00:00
Jonas Ådahl
84bde805fe native: Consolidate DRM buffer management to MetaDrmBuffer types
This commit consolidates DRM buffer management to the MetaDrmBuffer
types, where the base type handles the common functionality (such as
managing the framebuffer id using drmModeAdd*/RMFb()), and the sub types
their corresponding type specific behavior.

This means that drmModeAdd*/RmFB() handling is moved from meta-gpu-kms.c
to meta-drm-buffer.c; dumb buffer allocation/management from
meta-renderer-native.c.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1488>
2021-01-22 16:47:08 +00:00
Jonas Ådahl
c56433d6ee wayland/buffer: Trace instrument buffer-attach
While browsing sysprof profiling reports, I saw surface-commit taking
significant times sometimes; trace attach too, to see whether such
things are due to e.g. texture uploads.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1616>
2020-12-01 11:41:11 +00:00
Daniel van Vugt
345976192d wayland-buffer: Add debug logging of pixel format in use
Enable it with environment `MUTTER_DEBUG=wayland`.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1387
2020-10-20 09:53:53 +00:00
Jonas Ådahl
d3f629bfa8 wayland/shm: Advertise support for 64 half point RGBA formats
Now that cogl understands them, hook wl_shm up so they can be used.

This also bumps the wayland-server version dependency to 1.17.90, which
corresponds to the master branch of wayland. The new formats will be
available in 1.18.0.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/804
2020-08-07 09:02:49 +00:00
Jonas Ådahl
115de303b0 wayland/shm: Add ARGB2101010 formats and friends
In order to get higher color pixel precision when the alpha channel is
less important. Only advertise these formats if it is supported by the
used cogl renderer.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/804
2020-08-07 09:02:49 +00:00
Jonas Ådahl
2d6040e2a3 wayland/shm: Advertise support for RGB565
Doesn't hurt to support it, could save memory bandwidth would any client
use it without degrading visual quality.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/804
2020-08-07 09:02:49 +00:00