b57c1ec421
A long time in a galaxy far far away, there was a GLSLang bug with how it handled samplers passed in as function parameters. (The bug can be found here: https://github.com/KhronosGroup/glslang/issues/179.) Unfortunately, that version was shipped in several apps and has been causing heartburn for our SPIR-V parser ever since. Recent changes to NIR uncovered a moderately old bug in how we work around this issue. In particular, we ended up with a deref_cast from uniform to local which is not a no-op cast so nir_opt_deref wasn't getting rid of the cast. The only reason why it worked before was because someone just happened to call nir_fixup_deref_modes which "fixed" the cast (that shouldn't be happening) and then a later round of copy-prop would get rid of it. The fact that the deref_cast survived that long without causing trouble for other parts of NIR is a bit surprising. Just whacking the mode of the pointer seems to fix it fairly unobtrusively. Currently, only apps with this bug will have a local variable containing an image or sampler. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109304 Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@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.