Emma Anholt
558a600629
That's how the TGSI math opcodes work. This lets lower_vec_to_regs coalesce the DP output into the .yzw channels, giving an impressive shader-db win on softpipe: total instructions in shared programs: 2929840 -> 2794036 (-4.64%) instructions in affected programs: 1651438 -> 1515634 (-8.22%) total temps in shared programs: 372730 -> 332744 (-10.73%) temps in affected programs: 118151 -> 78165 (-33.84%) and a minor one on r300: total instructions in shared programs: 51238 -> 51149 (-0.17%) instructions in affected programs: 2621 -> 2532 (-3.40%) total vinst in shared programs: 15655 -> 15618 (-0.24%) vinst in affected programs: 468 -> 431 (-7.91%) total temps in shared programs: 9838 -> 9828 (-0.10%) temps in affected programs: 59 -> 49 (-16.95%) and a bigger one on i915g: total instructions in shared programs: 398064 -> 395901 (-0.54%) instructions in affected programs: 29271 -> 27108 (-7.39%) total tex_indirect in shared programs: 12261 -> 12233 (-0.23%) tex_indirect in affected programs: 98 -> 70 (-28.57%) LOST: 0 GAINED: 5 The r300 change is less impressive because it does some backend copy-prop, but also because intermediate storage of DPs now takes a vec4 instead of a scalar. Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14200>
`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.