3af4e63061
This allows us to skip the entire backend compilation process for large SIMD widths when register pressure is high enough that we'd likely decide to prefer a smaller one in the end anyway. The hope is to make the same decisions as before, but with less CPU overhead. We are making mostly the same decisions as before: | API / Platform | Total Shaders | Changed | % Identical -------------------------------------------------- | VK / Arc A770 | 905,525 | 1,157 | 99.872% | | VK / Arc B580 | 788,127 | 53 | 99.993% | | VK / Panther | 786,333 | 13 | 99.998% | | GL / Arc A770 | 308,618 | 269 | 99.913% | | GL / Arc B580 | 264,066 | 13 | 99.995% | | GL / Panther | 273,212 | 0 | 100.000% | Improves compile times on my i7-12700K: | Game | Arc B580 | Arc A770 | --------------------------------------------------- | Assassins Creed: Odyssey | -13.47% | -10.98% | | Borderlands 3 (DX12) | -10.05% | -11.31% | | Dark Souls 3 | -21.06% | -21.08% | | Oblivion Remastered | -11.10% | -9.82% | | Phasmophobia | -32.73% | -31.00% | | Red Dead Redemption 2 | -20.10% | -14.38% | | Total War: Warhammer III | -10.11% | -14.44% | | Wolfenstein Youngblood | -15.91% | -13.47% | | Shadow of the Tomb Raider | -30.23% | -25.86% | It seems to have nearly no effect on compile times on Xe3 unfortunately, as only 1,014 shaders in fossil-db even fail SIMD32 compilation in the first place, and we want to let most of the "might succeed" cases through to the backend for throughput analysis. Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36750>
`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.