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792a638b03
The NGG hardware pipeline doesn't track these statistics automatically, and in fact *cannot* track them automatically when API geometry shaders are involved, so we accumulate statistics in the shader using atomic adds. This implementation accumulates statistics via the memory system and the RW buffer descriptor setup. We could use GDS, but since these atomics aren't latency-sensitive, that basically just trades off L2$ bandwidth vs. export bus bandwidth. One single memory transaction per shader workgroup doesn't seem too bad. The result ring buffer in memory is needed either way to avoid pipeline stalls. The shader code contains the atomic unconditionally, though the GFX10_GS_QUERY_BUF is a null buffer when no queries are active. The atomic is simply discarded by the shader hardware in that case. Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> |
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| README.rst | ||
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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.html <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.html <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 `Freenode's #dri-devel <irc://chat.freenode.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.html <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.html <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses email mailing-lists for patches submission, review and discussions.