Mesa3D Graphics Library (Bleeding edge ray tracing branches)
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Caio Marcelo de Oliveira Filho 8a995f2b5e nir: Fix nir_opt_idiv_const when negatives are involved
First, allow the case for negative powers of two.  Then ensure that we
use the absolute value of the non-constant value to calculate the
quotient -- this was hinted in the code by the name 'uq'.

This fixes an issue when 'd' is positive and 'n' is negative.  The
ishr will propagate the negative sign and we'll use nir_ineg() again,
incorrectly.

v2: First version used only ishr, but that isn't sufficient, since it
    never can produce a zero as a result.  (Jason)
    Allow negative powers of two.  (Caio)

Fixes: 74492ebad9 "nir: Add a pass for lowering integer division by constants"
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2019-05-16 10:55:03 -07:00
.gitlab-ci gitlab-ci: add the vulkan overlay layer to the vulkan build 2019-05-08 19:51:46 +02:00
bin delete autotools .gitignore files 2019-04-29 21:17:19 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs swr: clean up supported OGL4.0/4.1 extensions list 2019-05-16 17:41:14 +02:00
doxygen
include freedreno: Restore msm_drm.h to a pristine "make headers_install" copy. 2019-05-14 11:51:57 -07:00
scons scons: Compatibility with Scons development version string 2019-03-12 14:22:34 +00:00
scripts get_reviewer.pl: improve portability 2019-05-03 14:32:44 +01:00
src nir: Fix nir_opt_idiv_const when negatives are involved 2019-05-16 10:55:03 -07:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig editorconfig: Add max_line_length property 2019-01-10 15:50:34 +02:00
.gitattributes
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml gitlab-ci: add the vulkan overlay layer to the vulkan build 2019-05-08 19:51:46 +02:00
.mailmap .mailmap: Add a few more alises for myself 2019-02-13 12:03:41 -08:00
.travis.yml travis: fix syntax, and drop unused stuff 2019-05-10 17:26:53 +01:00
Android.common.mk android: fix missing backspace for line continuation 2019-03-08 21:14:24 +00:00
Android.mk mesa: android: freedreno: build libfreedreno_{drm,ir3} static libs 2019-05-06 11:29:26 +00:00
CleanSpec.mk CleanSpec.mk: Remove HOST_OUT_release 2018-08-02 15:42:40 -06:00
README.rst README: Drop the badges from the readme 2019-02-07 12:46:17 -06:00
REVIEWERS docs: drop most autoconf references 2019-04-15 13:44:34 -07:00
SConstruct scons: Require python 2.7 2018-08-16 13:52:56 -07:00
VERSION Bump version for 19.1 branch 2019-05-07 16:02:34 +00:00
appveyor.yml appveyor: Revert commits adding Cygwin support. 2019-01-25 14:13:26 +00:00
common.py scons/svga: remove opt from the list of valid build types 2018-10-26 12:09:00 -06:00
meson.build meson: fix a couple typos in comments 2019-05-09 11:14:37 +01:00
meson_options.txt meson: Make shader-cache a trillean instead of boolean 2019-05-03 10:57:36 -07:00

README.rst

`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.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.