Mesa3D Graphics Library (Bleeding edge ray tracing branches)
Go to file
Mike Blumenkrantz 3c5b7dca30 util/vbuf: fix buffer overrun in attribute conversions
using the stride to calculate the buffer map size here is not correct, as
the stride is not necessarily equal to the attribute size, it's only the distance
between elements. for the case of overlapping elements (cts does this), the result
is that the attribute conversion will read past the end of the mapped src region

this is usually fine for drivers when they directly map the vertex buffer, as the memory
past the requested region is usually made available, but in the case where the readback
occurs using a staging resource sized exactly to the map region, this overflows and fails
silently, not even triggering a valgrind error because gpu memory lol

instead, add the size of the largest possible element, which will automatically be clamped
and ensure any staging buffers are correctly sized

Cc: mesa-stable@lists.freedesktop.org

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10963>
2021-06-09 21:52:12 +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: Run tests inside Crosvm 2021-06-09 19:14:00 +00:00
android android: Add scripts to build using meson 2021-06-07 16:04:15 +00:00
bin egl/android: refactor to use the legit vndk/window.h header 2021-06-09 21:07:54 +00:00
build-support
docs radv: Implement VK_EXT_global_priority_query. 2021-06-09 08:25:25 +00:00
include egl/android: refactor to use the legit vndk/window.h header 2021-06-09 21:07:54 +00:00
src util/vbuf: fix buffer overrun in attribute conversions 2021-06-09 21:52:12 +00:00
subprojects util: Perfetto SDK v15.0 2021-05-07 13:41:38 +00:00
.dir-locals.el
.editorconfig docs: fixup indentation 2020-01-18 11:39:32 +01:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml ci: Move Kernel build tasks into its own file 2021-06-09 19:14:00 +00:00
.mailmap .mailmap: fix email for Daniel Schürmann 2021-03-22 18:56:22 +00:00
.travis.yml travis: Download XQuartz from GitHub. 2021-05-29 10:25:16 +00:00
Android.common.mk meson, util: Make zlib optional again 2021-03-19 19:33:59 +00:00
Android.mk android: Add scripts to build using meson 2021-06-07 16:04:15 +00:00
CleanSpec.mk CleanSpec.mk: Remove HOST_OUT_release 2018-08-02 15:42:40 -06:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
REVIEWERS docs: remove doxygen support 2021-05-05 18:53:08 +00:00
VERSION VERSION: bump to 21.2.0-devel 2021-04-14 21:11:07 +00:00
meson.build add execmem build option 2021-06-09 21:28:17 +00:00
meson_options.txt add execmem build option 2021-06-09 21:28:17 +00:00

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.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.