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If the FD passed in isn't from a render node, try to determine the corresponding render node and open it. If that succeeds, use the render node FD for internal driver operations, while keeping the original FD for application-facing KMS and flink operations. This avoids issues with unauthenticated card-node FDs, e.g. GBM platform probing via eglinfo in a desktop session as a non-root user. Compared to the analogous amdgpu change, the radeon winsys needs some extra plumbing because GEM handles belong to the DRM file description they came from. Keep track of both FDs, translate handles between them when needed, and make mixed dma-buf / flink imports still resolve to one internal BO. This follows suggestions from Michel Dänzer, with additional inspiration from iris winsys. Assisted-by: Codex (GPT-5.4) Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com> Closes: https://gitlab.freedesktop.org/mesa/mesa/-/work_items/11724 |
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`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.