mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-01-07 17:20:21 +01:00
read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
a34b0d68bb
Support PRIME render offload between a Wayland server gpu and a Wayland
client gpu with different channel ordering for their color formats,
e.g., between Intel drivers which currently only support ARGB2101010
and XRGB2101010 import/display and nouveau which only supports ABGR2101010
rendering and display on nv-50 and later.
In the wl_visuals table, we also store for each format an alternate
sibling format which stores colors at the same precision, but with
different channel ordering, e.g., ARGB2101010 <-> ABGR2101010.
If a given client-gpu renderable format is not supported by the server
for import, but the alternate format is supported by the server, expose
the client-gpu renderable format as a valid EGLConfig to the client. At
eglSwapBuffers time, during the blitImage() detiling blit from the client
backbuffer to the linear buffer, the client format is converted to the
server supported format. As we have to do a copy for PRIME anyway,
this channel swizzling conversion comes essentially for free.
Note that even if a server gpu in principle does support sampling
from the clients native format, this conversion will be a performance
advantage if it allows to convert to the servers preferred format
for direct scanout, as the Wayland compositor may then be able to
directly page-flip a fullscreen client wl_buffer onto the primary
plane, or onto a hardware overlay plane, avoiding an extra data copy
for desktop composition.
Tested so far under Weston with: nouveau single-gpu, Intel single-gpu,
AMD single-gpu, "Optimus" Intel server iGPU for display + NVidia
client dGPU for rendering.
v2: Implement minor review comments by Eric Engestrom: Add some
comment and assert, and some style fixes for clarity.
No functional change.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
|
||
|---|---|---|
| bin | ||
| build-support | ||
| docs | ||
| doxygen | ||
| 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.