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We want to use nir_opt_large_constants() instead (which is already enabled), since that doesn't involve uploading the large immediate data array again on each CB0 update. The downside is a bit of addressing math, since constant_data is accessed using 64-bit global addresses. The shader-db results are a bit all over: All Iris driver platforms had similar results. (Ice Lake shown) total instructions in shared programs: 19910185 -> 19913931 (0.02%) instructions in affected programs: 225374 -> 229120 (1.66%) helped: 3 / HURT: 348 total cycles in shared programs: 856004856 -> 855016808 (-0.12%) cycles in affected programs: 22832422 -> 21844374 (-4.33%) helped: 277 / HURT: 101 total spills in shared programs: 6580 -> 6609 (0.44%) spills in affected programs: 516 -> 545 (5.62%) helped: 1 / HURT: 4 total fills in shared programs: 8235 -> 8267 (0.39%) fills in affected programs: 1022 -> 1054 (3.13%) helped: 1 / HURT: 3 total sends in shared programs: 1039347 -> 1039095 (-0.02%) sends in affected programs: 16367 -> 16115 (-1.54%) helped: 251 / HURT: 0 LOST: 5 GAINED: 2 LOST: - 3 SIMD16 fragment shaders (Superposition) - 2 SIMD16 compute shaders (Aztec Ruins) GAINED: - fake news... 2 SIMD8 compute shaders that replace the lost SIMD16 compute shaders. Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16539> |
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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://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <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 `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://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.