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Kenneth Graunke 03df494ea4 mesa: Mark render-to-texture as unsafe if there's no pipe_resource
Let's be slightly more defensive here.  If a texture image doesn't have
an associated pipe_resource allocated, then render_texture() will pass
that along to _mesa_update_renderbuffer_surface(), which will crash on a
NULL pointer dereference.  So, if there isn't a pipe_resource, then we
should just skip this altogteher.

Today, this isn't an issue, because each gl_texture_image always
allocates a pipe_resource up front.  On a branch of mine, I prototyped
some improvements to the compressed texture fallback handling, where it
would defer resource allocation, examine the source image's block data,
and dynamically select a format based on that, then allocate it later.

With that prototype in place, we saw crashes the Android "My Talking
Tom" series of games, which appear to be attaching ASTC textures to a
framebuffer color attachment.  That FBO would be incomplete anyway, as
ASTC textures aren't renderable, but we got into a situation where the
render-to-texture code was crashing due to the lack of pt before it
could properly signal that it was incomplete and bailing.

Technically, we don't need this now, but I figure that being defensive
won't hurt and this would probably save whoever encounters such an issue
in the future a bunch of frustrating debugging.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17508>
2022-07-26 18:38:43 +00:00
.github/workflows github/ci: Set permissions for GitHub actions 2022-07-15 20:56:16 +00:00
.gitlab/issue_templates gitlab: ask that reporters don't include long logs in descriptions 2022-06-08 15:06:51 +00:00
.gitlab-ci ci/lava: Increase boot timeout 2022-07-21 02:24:20 +00:00
android Android.mk: Intermediate output paths may already be absolute 2022-06-26 22:06:36 +00:00
bin bin: Add a script for filtering/sorting refcount logs 2022-05-02 16:58:20 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs lavapipe: advertise VK_EXT_multisampled_render_to_single_sampled 2022-07-26 00:02:26 +00:00
include kopper: Implement {EGL,GLX}_EXT_buffer_age 2022-07-18 19:31:29 +00:00
src mesa: Mark render-to-texture as unsafe if there's no pipe_resource 2022-07-26 18:38:43 +00:00
subprojects subprojects: Point DirectX-Headers at a specific tag 2022-07-15 16:27:11 +00:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig ci/vs2019: Update editorconfig for ps1 files 2022-06-14 21:14:33 +00:00
.gitattributes Add new rules to .gitattributes 2022-01-19 15:17:17 +00:00
.gitignore .gitignore: Qualify the path for the ignored build directory. 2022-06-09 22:53:37 +00:00
.gitlab-ci.yml Revert "CI: Disable Collabora lab" 2022-07-16 11:44:26 +00:00
.mailmap mailmap: update my email to Igalia 2022-07-11 15:03:53 +01:00
CODEOWNERS CODEOWNERS: evelikov renamed to xexaxo 2022-06-24 12:28:59 +00:00
meson.build util: Add a Win32 futex impl 2022-07-15 21:31:51 +00:00
meson_options.txt util: Add a Win32 futex impl 2022-07-15 21:31:51 +00:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
VERSION VERSION: bump to 22.2-devel for next cycle 2022-04-13 23:40:25 +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://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.