Rhys Perry 7d552d71e9 ac/nir: optimize txd(coord, ddx/ddy(coord))
This is done in ac_nir_lower_tex so that we can optimize derivative
calculations with a different exec mask than the texture sample by using
the nir_strict_wqm_coord_amd path.

It's also more aware of divergence than nir_lower_tex is.

fossil-db (gfx1201):
Totals from 103 (0.13% of 79839) affected shaders:
MaxWaves: 2610 -> 2620 (+0.38%)
Instrs: 347283 -> 345912 (-0.39%); split: -0.40%, +0.00%
CodeSize: 1892380 -> 1883824 (-0.45%); split: -0.46%, +0.00%
VGPRs: 8028 -> 7824 (-2.54%)
Latency: 3942575 -> 3939623 (-0.07%); split: -0.08%, +0.01%
InvThroughput: 867147 -> 865281 (-0.22%); split: -0.24%, +0.02%
VClause: 6230 -> 6221 (-0.14%); split: -0.19%, +0.05%
SClause: 3910 -> 3914 (+0.10%); split: -0.26%, +0.36%
Copies: 16091 -> 15721 (-2.30%); split: -2.74%, +0.44%
PreSGPRs: 4651 -> 4658 (+0.15%)
PreVGPRs: 6389 -> 6320 (-1.08%); split: -1.17%, +0.09%
VALU: 228715 -> 227490 (-0.54%); split: -0.54%, +0.01%
SALU: 32763 -> 32767 (+0.01%); split: -0.06%, +0.07%
VMEM: 9027 -> 9024 (-0.03%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37561>
2025-10-23 11:22:00 +00:00
2025-02-23 00:31:59 +01:00
2025-10-22 09:23:34 +02:00
2025-01-08 20:37:51 +00:00
2023-11-02 11:37:46 +00:00
2025-09-16 19:45:15 +00:00
2025-10-21 02:28:09 +00:00
2025-10-20 17:46:38 +00:00
2025-10-20 17:46:38 +00:00
2024-11-18 22:29:14 +00:00
2025-10-16 03:31:58 +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://docs.mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_):

.. code-block:: sh

  $ meson setup build
  $ ninja -C build/
  $ sudo ninja -C build/ 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://docs.mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.rst
<https://docs.mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses gitlab for patches submission, review and discussions.
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