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Eric Anholt 8bd91d1368 util: Fix big-endian handling of z/s formats.
channel datatypes in Mesa are the host's endianness.  For example,
PIPE_FORMAT_R32_UINT doesn't do a bswap in and out in u_format_table.c's
pack/unpack functions.  So, z32_unorm shouldn't be byte swapping either,
and neither should z24s8 which is also a packed format, and once you've
got those it becomes clear that all of the swaps in this file were
mistaken.

Things would mostly work out because it's unusual to read/write Z/S data
through the GL API, and even for drivers like softpipe as long as the pack
and unpack both swap it could work anyway.  However, the bug would be
visible in glReadPixels() with the matching datatype which would hit the
memcpy fastpath without doing another swap.

Caught by a mesa/main unit test on transitioning to using these
pack/unpack functions.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10336>
2021-04-21 19:59:10 +00:00
.gitlab/issue_templates gitlab: rename RADV bug report template 2021-04-01 10:02:39 +00:00
.gitlab-ci ci: support KHR-GLES testing 2021-04-20 12:39:27 +02:00
bin anv: Remove vkCreateDmaBufINTEL (v4) 2021-04-08 14:15:55 +00:00
build-support
docs docs: update calendar and link releases notes for 21.0.3 2021-04-21 19:32:16 +00:00
doxygen
include drm-uapi: Update drm_fourcc.h for new TGL modifier 2021-04-13 02:53:11 +00:00
src util: Fix big-endian handling of z/s formats. 2021-04-21 19:59:10 +00:00
subprojects
.dir-locals.el
.editorconfig
.gitignore
.gitlab-ci.yml ci: support KHR-GLES testing 2021-04-20 12:39:27 +02:00
.mailmap .mailmap: fix email for Daniel Schürmann 2021-03-22 18:56:22 +00:00
.travis.yml scons: Remove. 2021-03-20 10:38:55 +00:00
Android.common.mk meson, util: Make zlib optional again 2021-03-19 19:33:59 +00:00
Android.mk
CleanSpec.mk
meson.build meson: OpenMP is supposed to be optional 2021-04-19 23:23:59 +00:00
meson_options.txt meson: Increase Android Platform SDK version limit 2021-04-19 21:21:53 +00:00
README.rst
REVIEWERS scons: Remove. 2021-03-20 10:38:55 +00:00
VERSION VERSION: bump to 21.2.0-devel 2021-04-14 21:11:07 +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 `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.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.