Kenneth Graunke
a8588f512b
This skips GLSL IR lowering of pack/unpackHalf operations, allowing the NIR optimizer to see them Improves performance in Synmark2's OglCSDof by about 2x, by cutting about 90% of the cycles from one of the compute shaders. shader-db statistics on Skylake: 4 compute shaders went from SIMD8 to SIMD16. total instructions in shared programs: 15598871 -> 15542568 (-0.36%) instructions in affected programs: 143016 -> 86713 (-39.37%) helped: 144 HURT: 0 helped stats (abs) min: 17 max: 4669 x̄: 390.99 x̃: 164 helped stats (rel) min: 7.48% max: 85.28% x̄: 30.17% x̃: 24.22% 95% mean confidence interval for instructions value: -510.50 -271.49 95% mean confidence interval for instructions %-change: -32.70% -27.65% Instructions are helped. total cycles in shared programs: 371973958 -> 368902103 (-0.83%) cycles in affected programs: 5557722 -> 2485867 (-55.27%) helped: 144 HURT: 0 helped stats (abs) min: 106 max: 1026600 x̄: 21332.33 x̃: 1697 helped stats (rel) min: 0.53% max: 88.98% x̄: 36.12% x̃: 34.67% 95% mean confidence interval for cycles value: -41570.02 -1094.64 95% mean confidence interval for cycles %-change: -38.44% -33.80% Cycles are helped. total spills in shared programs: 11936 -> 11903 (-0.28%) spills in affected programs: 110 -> 77 (-30.00%) helped: 3 HURT: 2 total fills in shared programs: 25644 -> 25178 (-1.82%) fills in affected programs: 677 -> 211 (-68.83%) helped: 5 HURT: 0 total loops in shared programs: 4830 -> 4829 (-0.02%) loops in affected programs: 1 -> 0 helped: 1 HURT: 0
`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.