Find a file
Michel Dänzer 65e376a721 gallium/util: Cast to target type before shifting left
Otherwise a smaller type may be promoted to int, which can hit undefined
behaviour:

../src/gallium/auxiliary/util/u_half.h:126:29: runtime error: left shift of 32768 by 16 places cannot be represented in type 'int'
    #0 0x5646ff63d488 in util_half_to_float ../src/gallium/auxiliary/util/u_half.h:126
    #1 0x5646ff63d749 in _mesa_half_to_float ../src/util/half_float.c:145
    #2 0x5646ff54d557 in nir_const_value_negative_equal ../src/compiler/nir/nir_instr_set.c:372
    #3 0x5646ff44d29a in const_value_negative_equal_test_nir_type_float16_trivially_true_Test::TestBody() ../src/compiler/nir/tests/negative_equal_tests.cpp:121
    #4 0x5646ff505c05 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) ../src/gtest/src/gtest.cc:2402
    #5 0x5646ff4f1513 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) ../src/gtest/src/gtest.cc:2438
    #6 0x5646ff4979b5 in testing::Test::Run() ../src/gtest/src/gtest.cc:2474
    #7 0x5646ff49a08e in testing::TestInfo::Run() ../src/gtest/src/gtest.cc:2656
    #8 0x5646ff49c81c in testing::TestCase::Run() ../src/gtest/src/gtest.cc:2774
    #9 0x5646ff4b81f6 in testing::internal::UnitTestImpl::RunAllTests() ../src/gtest/src/gtest.cc:4649
    #10 0x5646ff50981e in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) ../src/gtest/src/gtest.cc:2402
    #11 0x5646ff4f4eeb in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) ../src/gtest/src/gtest.cc:2438
    #12 0x5646ff4af818 in testing::UnitTest::Run() ../src/gtest/src/gtest.cc:4257
    #13 0x5646ff52e639 in RUN_ALL_TESTS() ../src/gtest/include/gtest/gtest.h:2233
    #14 0x5646ff52e4f9 in main ../src/gtest/src/gtest_main.cc:37
    #15 0x7f6bacb78bba in __libc_start_main ../csu/libc-start.c:308
    #16 0x5646ff448019 in _start (/home/daenzer/src/mesa-git/mesa/build-amd64-sanitize/src/compiler/nir/negative_equal+0x17c019)

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
2019-10-24 16:20:31 +02:00
.appveyor Appveyor/Meson: Add build test of osmesa gallium 2019-10-19 14:44:44 +00:00
.gitlab-ci gitlab-ci: Update kernel for LAVA jobs to 5.4-rc4 2019-10-24 08:47:37 +02:00
bin symbols-check: ignore exported C++ symbols 2019-10-13 17:40:43 +01:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs docs: Add new Intel extension 2019-10-23 19:07:34 +03:00
doxygen doxygen: Plumb through gallium/ to automated documentation 2016-05-30 17:53:45 +01:00
include drm-uapi: Update headers from drm-next 2019-10-23 05:41:14 +00:00
scons scons/windows: Fix build with LLVM>=8 2019-10-04 13:48:08 +00:00
src gallium/util: Cast to target type before shifting left 2019-10-24 16:20:31 +02:00
subprojects meson: add a expat subproject 2019-09-10 20:36:47 +00:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig editorconfig: Fix meson style 2019-05-24 18:44:18 +00:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml gitlab-ci: Enable llvmpipe in ARM build jobs 2019-10-22 10:26:29 +00:00
.mailmap .mailmap: add a couple of aliases for Jakob Bornecrantz 2019-10-03 17:11:20 -04:00
.travis.yml travis: test meson install as well 2019-10-18 15:27:37 +01:00
Android.common.mk docs: Update bug report URLs for the gitlab migration 2019-09-19 16:37:36 +00:00
Android.mk Android.mk: Fix missing \ from recent llvm change 2019-09-13 19:11:10 +00:00
appveyor.yml appveyor: Move appveyor script into .appveyor directory 2019-10-18 13:02:58 -07:00
CleanSpec.mk CleanSpec.mk: Remove HOST_OUT_release 2018-08-02 15:42:40 -06:00
common.py scons/MSYS2-MinGW-W64: Fix build options defaults 2019-10-05 08:43:13 +00:00
meson.build meson: add -Werror=empty-body to disallow if(x); 2019-10-24 14:54:09 +01:00
meson_options.txt meson: Check for SPIRV-Tools and llvm-spirv 2019-09-21 08:28:32 +00:00
README.rst README: Drop the badges from the readme 2019-02-07 12:46:17 -06:00
REVIEWERS REVIEWERS: add VMware reviewers 2019-10-18 16:42:40 +00:00
SConstruct docs: Update bug report URLs for the gitlab migration 2019-09-19 16:37:36 +00:00
VERSION mesa: bump version to 19.3.0-devel 2019-08-20 22:33:49 +01:00

`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.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.