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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
fbf95ce074
The calculated length of a line may be infinite, if the coords we get are bogus. This leads to an infinite loop in line stippling. To prevent this test for this explicitly (although technically on at least x86 sse it would actually work without the explicit test, as long as we use the int-converted length value). While here also get rid of some always-true condition. Note this does not actually solve the root cause, which is that the coords we receive are bogus after clipping. This seems a difficult problem to solve. One issue is that due to float arithmetic, clip w may become 0 after clipping if the incoming geometry is "sufficiently degenerate", hence x/y/z ndc (and window) coords will be all inf (or nan). Even with w not quite 0, I believe it's possible we produce values which are actually outside the view volume. (Also, x=y=z=w=0 coords in clipspace would be not considered subject to clipping, and similarly result in all NaN coords.) We just hope for now other draw stages (and rasterizers) can handle those relatively safely (llvmpipe itself should be sort of robust against this, certainly converstion to fixed point will produce garbage, it might fail a couple assertions but should neither hang nor crash otherwise). Reviewed-by: Jose Fonseca <jfonseca@vmware.com> |
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| appveyor.yml | ||
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| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
| install-lib-links.mk | ||
| Makefile.am | ||
| meson.build | ||
| meson_options.txt | ||
| README.rst | ||
| REVIEWERS | ||
| SConstruct | ||
| VERSION | ||
`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.