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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
96d8e48ed5
Back when SSBOs were first enabled in i965, we tried to work around issues where the CPU and GPU were incoherently writing to the same cacheline by forcing an alignment such that different sections of data would fall in different cachelines. This seems wrong. On integrated GPUs with LLC, CPU and GPU writes should be coherent. On integrated GPUs without LLC, we either enable snooping (so they are again coherent), or we use WC maps (so the CPU cache isn't used). Discrete GPUs always use WC maps (so the CPU cache isn't used). This should work. In other words, I think the increased alignment was just working around coherency problems on atoms that have been fixed in the intervening 6 year time period. Untyped surface messages require 4B alignment. Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5016 Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11727> |
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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.