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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
0cf3c5f2f3
Calculating the scissor rectangle fields with the y flipped (0 on top)
can generate negative values that will cause assertion failure later on
as the scissor fields are all unsigned. We must clamp the bbox values
again to make sure they don't exceed the fb_height. Also fixed a
calculation error.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108999
https://bugs.freedesktop.org/show_bug.cgi?id=109594
v2:
- I initially clamped the values inside the if (Y is flipped) case
and I made a mistake in the calculation: the clamp of the bbox[2] should
be a check if (bbox[2] >= fbheight) bbox[2] = fbheight - 1 instead and I
shouldn't have changed the ScissorRectangleYMax calculation. As the
fixed code is equivalent with using CLAMP instead of MAX2 at the top of
the function when bbox[2] and bbox[3] are calculated, and the 2nd is more
clear, I replaced it. (Nanley Chery)
v3:
- Reversed the CLAMP change in bbox[3] as the API guarantees that the
viewport height is positive. (Nanley Chery)
v4:
- Added nomination for the mesa-stable branch and the link to the second
bugzilla bug (Nanley Chery)
CC: <mesa-stable@lists.freedesktop.org>
Tested-by: Paul Chelombitko <qamonstergl@gmail.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
(cherry picked from commit
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| docs | ||
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| include | ||
| m4 | ||
| scons | ||
| scripts | ||
| src | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .travis.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| appveyor.yml | ||
| autogen.sh | ||
| CleanSpec.mk | ||
| 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.