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75f02ed4b5
This avoids massively long shader compile times when there is lots of spilling, at a minor cost of a few more spills/fills. Choose 15 as it is already the default used by the Cyberpunk 2077 driconf workaround. Surprisingly the number of additional spills/fills are miniscule in fossil-db: Instructions in all programs: 152680595 -> 152681525 (+0.0%) SENDs in all programs: 7672789 -> 7672789 (+0.0%) Loops in all programs: 48469 -> 48469 (+0.0%) Cycles in all programs: 11981743456 -> 11984228708 (+0.0%) Spills in all programs: 42989 -> 42779 (-0.5%) Fills in all programs: 76380 -> 76776 (+0.5%) partly because of the chaotic unpredictability that the choice of registe to spill has on a shader. For example, this patch massively helps some shaders in terms of spills/fills: Spills helped fossils/fossil-db/steam-native/red_dead_redemption2.vk-g6.foz/4101ff9c9b83bf22/SIMD8 fragment: 3208 -> 2894 (-9.8%) Fills helped fossils/fossil-db/steam-native/red_dead_redemption2.vk-g6.foz/4101ff9c9b83bf22/SIMD8 fragment: 7258 -> 6795 (-6.4%) Spills helped fossils/q2rtx/q2rtx-rt-pipeline.976f4ab1c0fee975.1.foz/c496e8a549f6b4bf/compute: 109 -> 92 (-15.6%) Related: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31133 Related: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9241 Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/11709 Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/11844 Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31269> |
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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://docs.mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_): .. code-block:: sh $ meson setup build $ ninja -C build/ $ sudo ninja -C build/ 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://docs.mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://docs.mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.