Konstantin Seurer b88ac6b381 nir: Optimize fpow with small constant exponents
They would be turned into exp(log(a)*b) instead, which is slow.

Totals from 2146 (2.52% of 85071) affected shaders:
MaxWaves: 35769 -> 35779 (+0.03%); split: +0.03%, -0.01%
Instrs: 6476835 -> 6465494 (-0.18%); split: -0.18%, +0.00%
CodeSize: 35382288 -> 35347092 (-0.10%); split: -0.10%, +0.00%
SpillSGPRs: 1055 -> 1017 (-3.60%)
Latency: 75211743 -> 75063623 (-0.20%); split: -0.20%, +0.00%
InvThroughput: 17525115 -> 17501745 (-0.13%); split: -0.14%, +0.00%
VClause: 200089 -> 200077 (-0.01%); split: -0.01%, +0.01%
SClause: 293566 -> 293480 (-0.03%); split: -0.03%, +0.00%
Copies: 649631 -> 640516 (-1.40%); split: -1.44%, +0.03%
Branches: 268441 -> 268325 (-0.04%)
PreSGPRs: 146868 -> 146045 (-0.56%)
PreVGPRs: 134125 -> 134128 (+0.00%); split: -0.00%, +0.01%

Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26727>
2024-01-02 11:16:14 +01:00
2022-11-22 19:04:13 +00:00
2023-12-27 22:34:32 +00:00
2023-12-22 04:01:12 +00:00
2023-11-02 11:37:46 +00:00
2022-11-21 23:09:30 +00:00
2023-12-24 09:30:52 +00:00
2023-10-25 19:56:42 +00:00

`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.
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