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In order to return correct offsets, strides and possibly other parameters. This is relevant for formats like NV12 and P010 where the second plane, when produced by the Intel VAAPI decoder, uses the same FD like the first one, but with an offset. Right now there are only two modifiers with well defined indices of auxiliary planes for semi-planar formats according to the local copy of drm_fourcc.h, `I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS` and `I915_FORMAT_MOD_4_TILED_MTL_MC_CCS`, sharing the same layout. Assume that future `MC_CCS` modifiers will get defined accordingly for now. Cc: mesa-stable Tested-by: Nanley Chery <nanley.g.chery@intel.com> Reviewed-by: Nanley Chery <nanley.g.chery@intel.com> Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9952 Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25603>
`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://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_): .. code-block:: sh $ mkdir build $ cd build $ meson .. $ sudo ninja 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://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.