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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
629bef2a4c
Some instructions have a minimum latency before another instruction can execute. It's a little unclear exactly what the details on these are. For things like OpBar it's probably something to do with when stuff actually convergres. For MemBar, maybe we only need to wait before we do something that also touches memory? Unclear and the few docs seem to imply that it's a straight-up stall. For now, we model it as an execution latency where nothing is allowed to happen until then. The blob also inserts a NOP with a delay of 2 in these cases. It's not entirely clear why but it's probably best we do the same. Theses instructions tend to be pretty heavy-weight anyway so 2 cycles isn't really going to cost much compared to the chances that we're missing some subtle HW issues somewhere. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26716> |
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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://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.