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Connor Abbott dfe432d829 ir3: Make trig replacement expression exact
This prevents other optimizations from associating the inner multiply,
which can add inaccuracies that can lead to discontinuities around the
boundary of the ffract. We should use exactly the sequence that the blob
uses to avoid problems.

Since fadd + fmul cannot be combined to ffma when exact is specified, we
have to use ffma ourselves.

Fixes artifacts in PixMark Volplosion with !7458.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12912>
2021-09-17 15:45:29 +00:00
.gitlab/issue_templates issue_templates/Bug Report: Rename master branch to main 2021-05-05 12:20:11 -07:00
.gitlab-ci CI/windows: Build shared-glapi, EGL, gles2 2021-09-16 17:38:58 +00:00
android AOSP: Add panfrost vulkan library suffix 2021-08-16 09:18:46 +00:00
bin symbols-check: Fix symbol demangling for Windows 2021-09-16 17:38:58 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs features: fix listing for GL_ARB_parallel_shader_compile 2021-09-17 12:27:15 +00:00
include egl/dri2: seperate EGLImage validate and lookup 2021-09-09 01:42:39 +00:00
src ir3: Make trig replacement expression exact 2021-09-17 15:45:29 +00:00
subprojects util: Perfetto SDK v15.0 2021-05-07 13:41:38 +00:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig editorconfig: Use 3-space tabs for .rst 2021-06-22 17:37:55 +00:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml ci: Put all container related jobs in a single stage 2021-09-10 18:56:26 +00:00
.mailmap mailmap: Add two more lines for Alyssa Rosenzweig 2021-07-12 23:45:34 +00:00
.travis.yml travis: Download XQuartz from GitHub. 2021-05-29 10:25:16 +00:00
meson.build meson: Set /Zc:__cplusplus for MSVC 2021-09-16 17:38:58 +00:00
meson_options.txt meson: allow egl_native_platform to be specified 2021-07-21 23:12:58 +00:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
REVIEWERS Fix up leftover "state_trackers" references to "frontends" 2021-07-02 07:35:05 +00:00
VERSION VERSION: bump version for 21.3 development cycle 2021-07-14 10:22:12 -07:00

`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 `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://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.