Francisco Jerez 17add74dec iris/gen12: Implement programming of pixel pipe hashing tables.
Straightforward by using the pixel hashing table computation helper
previously introduced, assuming we know the fraction of work that
needs to be submitted to each pixel pipe.  Note that AFAIA the
hardware maps indices in the table to pixel pipes from largest to
smallest, so it shouldn't be necessary to permute indices based on the
physical IDs of the pixel pipes as we are doing on Gen11.

Improves performance of most non-trivial graphics workloads I've tried
on an 80 EU TGL.  E.g. the following testcases improve performance
significantly with sample size 27 and statistical significance 1%:

  gputest/pixmark_piano:      62.89% ±0.10%
  gputest/pixmark_volplosion: 61.51% ±0.06%
  unigine/valley:             26.72% ±0.25%
  gfxbench/gl_5_high:         24.70% ±0.19%
  unigine/heaven:             23.54% ±0.17%
  steam/csgo:                 22.75% ±4.36%
  gfxbench/gl_manhattan31:    22.43% ±0.29%
  gfxbench/gl_4:              20.92% ±0.35%
  warsow/benchsow:            19.15% ±2.53%
  gfxbench/gl_trex_off:       18.84% ±0.27%

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8749>
2021-02-23 21:15:25 -08:00
2020-08-06 09:46:48 +00:00
2021-02-23 22:27:04 -05:00
2020-01-18 11:39:32 +01:00
2020-08-06 09:46:48 +00:00
2019-10-18 16:42:40 +00:00
2021-01-13 09:46:19 -08:00

`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 `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.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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