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Previously, no buffers were ever marked as EXEC_OBJECT_ASYNC so the Kernel would ensure dependency tracking for us. After we implemented explicit busy tracking in commit89a34cb845, only the external objects kept relying on the Kernel's implicit tracking and Iris did inter-batch busy tracking, meaning we lost inter-screen and inter-context synchronization. This seemed fine to me since, as far as I understdood, it is the duty of the application to synchronize itself against multiple screens and contexts. The problem here is that applications were actually relying on the old behavior where the Kernel guarantees synchronization, so89a34cb845can be seen as a regression. This commit addresses the inter-context synchronization case. v2: Rebase after the changes froma90a1f15a7. This new version is significantly different. Cc: mesa-stable (see the backport in MR !14783) References: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14783 Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5731 Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5812 Fixes:89a34cb845("iris: switch to explicit busy tracking") References:a90a1f15a7("iris: Create an IRIS_BATCH_BLITTER for using the BLT command streamer") Tested-by: Konstantin Kharlamov <hi-angel@yandex.ru> (v1) Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14505>
`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.