Find a file
Mario Kleiner fc44e708d7 asahi: Set PIPE_BIND_SCANOUT in agx_resource_from_handle().
Commit 534a04d557 optimized agx_resource_from_handle() to lazily
defer assignment of a kms-ro renderonly_scanout object to an imported
resource until its kms winsys handle is actually queried by a caller
via agx_resource_get_handle(), to avoid unnecessary import into the
DCP display controller. Only resources with bind flag PIPE_BIND_SCANOUT
will get a renderonly_scanout object assigned during such queries.

Problem: This prevents Mesa GBM's gbm_bo_import() function from properly
importing dmabufs for direct scanout use by some Wayland compositors,
e.g., GNOME mutter.

gbm_bo_import() of dmabuf fd's (GBM_BO_IMPORT_FD / GBM_BO_IMPORT_FD_MODIFIER),
even with GBM_BO_USE_SCANOUT flag, will not mark an imported bo with the
PIPE_BIND_SCANOUT bind flag before internally assigning its KMS winsys
handle via screen->resource_get_handle() -> agx_resource_get_handle(),
causing silent failure of that query. Therefore gbm_bo_import() seems
to return a successfully created gbm_bo with all proper properties,
but gbm_bo_get_handle() and gbm_bo_get_handle_for_plane() will return
invalid handles. These invalid handles cause drmAddFbXXX ioctl calls to
fail, and therefore failure of direct scanout of wl_buffers.

Setting PIPE_BIND_SCANOUT for a resource in agx_resource_from_handle()
may retain the optimization and makes gbm_bo_get_handle[_for_plane]()
work. This fixes direct scanout of fullscreen wl_surface / wl_buffers
under at least GNOME mutter 48.

Fixes: 534a04d557 ("asahi: Flip kmsro around to allocate on the GPU")
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37538>
2025-09-24 15:14:42 +00:00
.ci-farms Revert "ci: disable Collabora's farm due to maintenance" 2025-09-08 16:16:52 +00:00
.ci-farms-disabled Revert "ci: disable Collabora's farm due to maintenance" 2025-09-08 16:16:52 +00:00
.github/workflows meson: remove unused osmesa option 2025-06-23 06:42:50 +00:00
.gitlab docs: update gitlab docs urls 2025-02-23 00:31:59 +01:00
.gitlab-ci ci/build-rust: strip rust libs and binaries 2025-09-19 17:28:42 +00:00
.marge/hooks ci: pipeline_message: reset empty errors 2025-01-07 05:08:10 +00:00
android android: Only include libdrm_intel for i915 as iris do not depend on it 2025-09-04 07:53:36 +00:00
bin ci,crnm: migrate colorama to rich 2025-09-23 09:57:37 +00:00
build-support meson: move tsan-blacklist.txt to build-support with the other build support files 2024-05-01 07:05:12 +00:00
docs tu: Expose VK_EXT_dynamic_rendering_unused_attachments 2025-09-23 17:33:19 +00:00
include drm-uapi: Sync panfrost_drm.h 2025-09-19 10:05:43 +00:00
licenses licenses: add missing licenses 2025-01-08 20:37:51 +00:00
src asahi: Set PIPE_BIND_SCANOUT in agx_resource_from_handle(). 2025-09-24 15:14:42 +00:00
subprojects subprojects: fix ignore exception for files under packagefiles/ 2025-08-25 15:55:53 +00:00
.clang-format
.clang-format-ignore ci: enforce formatting for RADV & ACO 2023-06-16 19:59:52 +00:00
.clang-format-include clang-format: Add src/imagination to .clang-format-include 2025-09-17 10:05:18 +00:00
.dir-locals.el
.editorconfig editorconfig: move OpenCL configuration to root 2025-08-30 22:49:08 -07:00
.git-blame-ignore-revs freedreno: Add register renaming to .git-blame-ignore-revs 2025-07-03 12:50:04 +00:00
.gitattributes gitlab: Highlight .cl as C 2023-11-02 11:37:46 +00:00
.gitignore .gitignore: Add KDevelop *.kdev4 2025-07-24 16:12:10 +00:00
.gitlab-ci.yml ci: Uprev ci-templates to pull in new helpers 2025-09-16 06:16:21 +00:00
.graphqlrc.yml
.mailmap mailmap: Update for Dylan Baker 2025-09-16 19:45:15 +00:00
.mr-label-maker.yml mr-label-maker.yml: remove remaining osmesa occurrences 2025-06-23 06:42:50 +00:00
.shellcheckrc ci: move shellcheck options to .shellcheckrc 2024-10-24 22:43:03 +00:00
CODEOWNERS intel: update code owners 2025-08-31 15:38:27 +00:00
meson.build mesa: add u_overflow.h 2025-09-23 09:09:55 +02:00
meson.options pvr, pco: usc program (pre-)generation boilerplate 2025-09-16 18:26:09 +00:00
README.rst docs: Match README installation guide with meson.rst 2024-07-27 11:53:53 +00:00
rustfmt.toml mesa: Add rustfmt.toml 2024-11-18 22:29:14 +00:00
VERSION VERSION: bump to 25.3 2025-07-16 13:50:24 +00:00

`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://docs.mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_):

.. code-block:: sh

  $ meson setup build
  $ ninja -C build/
  $ sudo ninja -C build/ 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://docs.mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.rst
<https://docs.mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses gitlab for patches submission, review and discussions.