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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
0975e1513a
Often, games just use arrays to select between 1.0 and 0.0 or -1.0. In the case where all values are the same except one index, use a compare instead of a shift. It's impossible to optimize the shift to just a compare because of NIR's SM5 shift semantics, but when we know the array length, it works just fine. Foz-DB Navi21: Totals from 3393 (2.96% of 114627) affected shaders: MaxWaves: 87039 -> 87087 (+0.06%) Instrs: 4991034 -> 4977962 (-0.26%); split: -0.28%, +0.02% CodeSize: 27505196 -> 27509988 (+0.02%); split: -0.08%, +0.10% VGPRs: 156216 -> 154720 (-0.96%) SpillSGPRs: 812 -> 801 (-1.35%); split: -1.60%, +0.25% Latency: 38221096 -> 38207053 (-0.04%); split: -0.10%, +0.06% InvThroughput: 9518564 -> 9469903 (-0.51%); split: -0.52%, +0.01% VClause: 121340 -> 121370 (+0.02%); split: -0.05%, +0.07% SClause: 127822 -> 127996 (+0.14%); split: -0.01%, +0.14% Copies: 437743 -> 437832 (+0.02%); split: -0.40%, +0.43% Branches: 173910 -> 173893 (-0.01%); split: -0.17%, +0.16% PreSGPRs: 147137 -> 147957 (+0.56%); split: -0.01%, +0.57% PreVGPRs: 126313 -> 126296 (-0.01%); split: -0.09%, +0.08% VALU: 3309713 -> 3288169 (-0.65%); split: -0.66%, +0.01% SALU: 762369 -> 770904 (+1.12%); split: -0.03%, +1.15% VMEM: 182394 -> 182392 (-0.00%) SMEM: 201777 -> 201801 (+0.01%); split: -0.00%, +0.01% Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40539> |
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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.