Pavel Ondračka 9db5da0f38 r300: add partial CMP support on R5xx
VE_COND_MUX_GTE4 is a nice match for the TGSI CMP opcode, however
there is a big limitation due to the general shortcoming of the
vertex shader engine that any instruction can read only two different
temporary registers. So we still have to lower in some cases.

Shader-db RV530:
total instructions in shared programs: 130872 -> 130333 (-0.41%)
instructions in affected programs: 29854 -> 29315 (-1.81%)
helped: 294
HURT: 83
total temps in shared programs: 16747 -> 16775 (0.17%)
temps in affected programs: 407 -> 435 (6.88%)
helped: 10
HURT: 38

Reviewed-by: Filip Gawin <filip.gawin@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23691>
2023-06-22 14:34:39 +00:00
2022-11-22 19:04:13 +00:00
2023-06-22 14:34:39 +00:00
2022-01-19 15:17:17 +00:00
2022-11-21 23:09:30 +00:00
2023-06-09 19:31:20 +00:00
2023-04-13 08:45:17 +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
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Remember that not everyone is in the same timezone as you, so it might
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To figure out who you're talking to, or which nick to ping for your
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<https://dri.freedesktop.org/wiki/WhosWho/>`_.

The next best option is to ask your question in an email to the
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<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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