802f4da5ee
Add a new backend to enable using native driver in a VM guest, via a new virtgpu context type which (indirectly) makes host kernel interface available in guest and handles the details of mapping buffers to guest, etc. Note that fence-fd's are currently a bit awkward, in that they get signaled by the guest kernel driver (drm/virtio) once virglrenderer in the host has processed the execbuf, not when host kernel has signaled the submit fence. For passing buffers to the host (virtio-wl) the egl context in virglrenderer is used to create a fence on the host side. But use of out-fence-fd's in guest could have slightly unexpected results. For this reason we limit all submitqueues to default priority (so they cannot be preepmted by host egl context). AFAICT virgl and venus have a similar problem, which will eventually be solveable once we have RESOURCE_CREATE_SYNC. Signed-off-by: Rob Clark <robdclark@chromium.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14900>
`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.