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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
a16975e615
This improves a couple of things: 1. We now only update anything if the shader actually cares. Previously, is_indexed_draw was causing us to flag dirty vertex buffers, elements, and SGVs every time the shader switched between indexed and non-indexed draws. This is a very common situation, but we only need that information if the shader uses gl_BaseVertex. We were also flagging things when switching between indirect/direct draws as well, and now we only bother if it matters. 2. We upload new draw parameters only when necessary. When we detect that the draw parameters have changed, we upload a new copy, and use that. Previously we were uploading it every time the vertex buffers were dirty (for possibly unrelated reasons) and the shader needed that info. Tying these together also makes the code a bit easier to follow. In Civilization VI's benchmark, this code was flagging dirty state many times per frame (49 average, 16 median, 614 maximum). Now it occurs exactly once for the entire run. |
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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.