22f9fbc0d9
All of the affected shaders are geometry shaders... the same ones from the similar fs changes. The "No changes on any other platforms" comment below is not quite right. Without the previous change to register coalescing, this optimization caused quite a few regressions in tests that either used gl_ClipVertex or used different interpolation modes. I observed that with both patches applied, glsl-1.10/execution/interpolation/interpolation-none-gl_BackSecondaryColor-smooth-vertex.shader_test was one instruction shorter. I suspect other shaders would be similarly affected. Since this is all based on NOS, shader-db does not reflect it. Haswell total instructions in shared programs: 12954955 -> 12954918 (<.01%) instructions in affected programs: 3603 -> 3566 (-1.03%) helped: 37 HURT: 0 helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1 helped stats (rel) min: 0.21% max: 2.50% x̄: 1.99% x̃: 2.50% 95% mean confidence interval for instructions value: -1.00 -1.00 95% mean confidence interval for instructions %-change: -2.30% -1.69% Instructions are helped. total cycles in shared programs: 410012108 -> 410012098 (<.01%) cycles in affected programs: 3540 -> 3530 (-0.28%) helped: 5 HURT: 0 helped stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2 helped stats (rel) min: 0.28% max: 0.28% x̄: 0.28% x̃: 0.28% 95% mean confidence interval for cycles value: -2.00 -2.00 95% mean confidence interval for cycles %-change: -0.28% -0.28% Cycles are helped. Ivy Bridge total instructions in shared programs: 11679387 -> 11679351 (<.01%) instructions in affected programs: 3292 -> 3256 (-1.09%) helped: 36 HURT: 0 helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1 helped stats (rel) min: 0.21% max: 2.50% x̄: 2.04% x̃: 2.50% 95% mean confidence interval for instructions value: -1.00 -1.00 95% mean confidence interval for instructions %-change: -2.34% -1.74% Instructions are helped. No changes on any other platforms. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
`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 status
------------
Travis:
.. image:: https://travis-ci.org/mesa3d/mesa.svg?branch=master
:target: https://travis-ci.org/mesa3d/mesa
Appveyor:
.. image:: https://img.shields.io/appveyor/ci/mesa3d/mesa.svg
:target: https://ci.appveyor.com/project/mesa3d/mesa
Coverity:
.. image:: https://scan.coverity.com/projects/139/badge.svg?flat=1
:target: https://scan.coverity.com/projects/mesa
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.