Utku Iseri d6eb5b4039 panvk: explicit fallback to linear for legacy scanout images
If there isn't any modifier info coming from the compositor, we go
through our internal image path and pick the best modifier that
supports the image. This causes problems on X11, as it actually
expects the image to be in a linear layout.

Explicitly set the modifier to linear for legacy scanout images,
which specifically indicates that the image doesn't have an
explicit DRM modifier and we should do the safe thing by using
linear.

The naming becomes confusing for scanout with this change,
so the flag is now split into two separate flags, one for controlling
the AFBC optimalness called wsi, the other more directly called
legacy_scanout, which is used for enforcing the linear mod.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37771>
2025-10-16 13:28:38 +00:00
2025-02-23 00:31:59 +01:00
2025-10-16 10:45:32 +00:00
2025-01-08 20:37:51 +00:00
2023-11-02 11:37:46 +00:00
2025-09-16 19:45:15 +00:00
2025-08-31 15:38:27 +00:00
2024-11-18 22:29:14 +00:00
2025-10-16 03:31:58 +00:00

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
======================================================


Source
------

This repository lives at https://gitlab.freedesktop.org/mesa/mesa.
Other repositories are likely forks, and code found there is not supported.


Build & install
---------------

You can find more information in our documentation (`docs/install.rst
<https://docs.mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_):

.. code-block:: sh

  $ meson setup build
  $ ninja -C build/
  $ sudo ninja -C build/ install

Support
-------

Many Mesa devs hang on IRC; if you're not sure which channel is
appropriate, you should ask your question on `OFTC's #dri-devel
<irc://irc.oftc.net/dri-devel>`_, someone will redirect you if
necessary.
Remember that not everyone is in the same timezone as you, so it might
take a while before someone qualified sees your question.
To figure out who you're talking to, or which nick to ping for your
question, check out `Who's Who on IRC
<https://dri.freedesktop.org/wiki/WhosWho/>`_.

The next best option is to ask your question in an email to the
mailing lists: `mesa-dev\@lists.freedesktop.org
<https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_


Bug reports
-----------

If you think something isn't working properly, please file a bug report
(`docs/bugs.rst <https://docs.mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.rst
<https://docs.mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses gitlab for patches submission, review and discussions.
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