Konstantin Seurer df44b353ad radv: Optimize ray tracing position fetch
Gets rid of a lot of indirection when fetching triangle positions.
Storing the primitive address increases register pressure by a bit but
the traversal shader which should have the highest register demand
should not be affected when position fetch is not used.

Totals:
Instrs: 4021686 -> 4022435 (+0.02%); split: -0.01%, +0.03%
CodeSize: 21235812 -> 21235832 (+0.00%); split: -0.02%, +0.02%
Latency: 23402275 -> 23412110 (+0.04%); split: -0.04%, +0.09%
InvThroughput: 4352818 -> 4352206 (-0.01%); split: -0.04%, +0.02%
VClause: 101906 -> 102058 (+0.15%); split: -0.03%, +0.18%
Copies: 342210 -> 342368 (+0.05%); split: -0.09%, +0.14%
Branches: 114988 -> 114993 (+0.00%)
PreVGPRs: 26551 -> 27111 (+2.11%)
VALU: 2249366 -> 2249524 (+0.01%); split: -0.01%, +0.02%
SALU: 529828 -> 529808 (-0.00%); split: -0.01%, +0.00%

Reviewed-by: Natalie Vock <natalie.vock@gmx.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35533>
2025-07-19 16:07:59 +00:00
2025-02-23 00:31:59 +01:00
2025-07-15 12:37:08 +00:00
2025-01-08 20:37:51 +00:00
2025-02-09 08:13:27 +00:00
2023-11-02 11:37:46 +00:00
2024-05-13 14:32:12 +00:00
2025-02-23 00:31:59 +01:00
2025-07-16 01:32:54 +00:00
2024-11-18 22:29:14 +00:00
2025-07-16 13:50:24 +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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