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Paulo Zanoni 9b50b320d1 iris: implement inter-context busy-tracking 
Previously, no buffers were ever marked as EXEC_OBJECT_ASYNC so the
Kernel would ensure dependency tracking for us. After we implemented
explicit busy tracking in commit 89a34cb845, only the external
objects kept relying on the Kernel's implicit tracking and Iris did
inter-batch busy tracking, meaning we lost inter-screen and
inter-context synchronization. This seemed fine to me since, as far as
I understood, it is the duty of the application to synchronize itself
against multiple screens and contexts.

The problem here is that applications were actually relying on the old
behavior where the Kernel guarantees synchronization, so 89a34cb845
can be seen as a regression. This commit addresses the inter-context
synchronization case.

Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5731
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5812
Fixes: 89a34cb845 ("iris: switch to explicit busy tracking")
Tested-by: Konstantin Kharlamov <hi-angel@yandex.ru>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14783>
2022-02-09 20:07:48 +00:00
.gitlab/issue_templates issue_templates/Bug Report: Rename master branch to main 2021-05-05 12:20:11 -07:00
.gitlab-ci meson: Check arguments before adding. 2021-11-10 21:58:06 +00:00
android android: add support for classic dri-drivers (v2) 2021-12-17 22:30:50 +00:00
bin android_stub: update platform headers to include atrace 2021-10-09 00:42:32 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs docs: add release notes for 21.3.5 2022-01-26 18:36:17 +00:00
include intel: remove 2 preproduction pci-id for ADLS 2021-11-10 21:58:04 +00:00
src iris: implement inter-context busy-tracking 2022-02-09 20:07:48 +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 meson: Check arguments before adding. 2021-11-10 21:58:06 +00:00
.mailmap mailmap: Add two more lines for Alyssa Rosenzweig 2021-07-12 23:45:34 +00:00
.pick_status.json iris: implement inter-context busy-tracking 2022-02-09 20:07:48 +00:00
.travis.yml travis: Download XQuartz from GitHub. 2021-05-29 10:25:16 +00:00
CODEOWNERS CODEOWNERS: add @jenatali for Microsoft & D3D12 2021-10-06 22:52:05 +00:00
meson.build meson: correctly detect linker arguments 2021-12-17 22:30:50 +00:00
meson_options.txt meson_options: Bump max value of platform-sdk-version to 31 2021-10-06 12:05:22 +00:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
VERSION VERSION: bump for 21.3.5 2022-01-26 18:36:23 +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.