Rhys Perry bd4c661ad0 ac,ac/nir: use a better sync scope for shared atomics
https://reviews.llvm.org/rL356946 (present in LLVM 9 and later) changed
the meaning of the "system" sync scope, making it no longer restricted to
the memory operation's address space. So a single address space sync scope
is needed for shared atomic operations (such as "system-one-as" or
"workgroup-one-as") otherwise buffer_wbinvl1 and s_waitcnt instructions
can be created at each shared atomic operation.

This mostly reimplements LLVMBuildAtomicRMW and LLVMBuildAtomicCmpXchg
to allow for more sync scopes and uses the new functions in ac->nir with
the "workgroup-one-as" or "workgroup" sync scopes.

      F1 2017 (4K, Ultra High settings, TAA), avg FPS : 59 -> 59.67 (+1.14%)
     Strange Brigade (4K, ~highest settings), avg FPS : 51.5 -> 51.6 (+0.19%)
RotTR/mountain (4K, VeryHigh settings, FXAA), avg FPS : 57.2 -> 57.2 (+0.0%)
    RotTR/tomb (4K, VeryHigh settings, FXAA), avg FPS : 42.5 -> 43.0 (+1.17%)
  RotTR/valley (4K, VeryHigh settings, FXAA), avg FPS : 40.7 -> 41.6 (+2.21%)
                         Warhammer II/fallen, avg FPS : 31.63 -> 31.83 (+0.63%)
                         Warhammer II/skaven, avg FPS : 37.77 -> 38.07 (+0.79%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2019-04-29 18:20:44 +01:00
2019-04-15 13:44:41 -07:00
2019-04-21 01:05:19 +00:00
2019-04-26 14:59:32 -07:00
2019-04-15 13:44:34 -07:00
2018-08-16 13:52:56 -07:00
2019-01-29 15:30:25 -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.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.
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