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Karmjit Mahil 0d25db406b pvr: Fix seg fault in vkAllocateDescriptorSets().
In cases when no immutable samplers were present but sampler
descriptor set layout bindings were, a seg fault was being caused
by an attempt to get the immutable sampler from within the
immutable sampler array while the array was not allocated.

This commit also remove the binding type check since only those
specific types can have immutable samplers. The check is covered
by the descriptor set layout creation and assignment of
has_immutable_samplers.

This commit also makes the immutable samplers const, since they're
meant to be immutable.

This commit also adds has_immutable_samplers field to descriptor
set layout. Previously to check whether immutable
samplers were present or not you'd check for the layout binding's
descriptor count to be 0 and the immutable sampler offset to be 0.
This doesn't tell you everything. If you have a descriptor of the
appropriate type (VK_DESCRIPTOR_TYPE_{COMBINED_,}IMAGE_SAMPLER).
So descriptor count of >1. The offset can be 0 if you don't have
immutable sampler, or have them at the beginning of the immutable
samplers array. So you can't determine if you really have immutable
samplers or not. One could attempt to perform a NULL check on the
array but this would not work in cases where you have following set
layout bindings with immutable samplers as the array stores the
whole layout's immutable samplers.

Signed-off-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com>
Reviewed-by: Rajnesh Kanwal <rajnesh.kanwal@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15688>
2022-03-31 17:12:21 +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: Improve vs2019 mesa_build.ps1 for remove the need of cmd.exe 2022-03-31 09:16:27 +00:00
android gallium/swr: Remove common code and build options 2021-12-06 23:37:50 +00:00
bin bin/gen_calendar_entries: fix newlines on windows 2022-01-16 08:39:44 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs radeonsi: drop LLVM global instruction selector 2022-03-31 10:15:19 +00:00
include vulkan: update more headers to 1.3.210 2022-03-29 22:43:52 +00:00
src pvr: Fix seg fault in vkAllocateDescriptorSets(). 2022-03-31 17:12:21 +00:00
subprojects meson: Update libelf wrap for Windows 2021-11-12 09:46:10 +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
.gitattributes Add new rules to .gitattributes 2022-01-19 15:17:17 +00:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml pvr: ci: Initial freedesktop CI integration 2022-03-24 11:39:40 +00:00
.mailmap .mailmap: Switch Jason Ekstrand to @collabora.com 2022-01-26 20:08:31 +00:00
.travis.yml travis: Download XQuartz from GitHub. 2021-05-29 10:25:16 +00:00
CODEOWNERS pvr: Add a Vulkan driver for Imagination Technologies PowerVR Rogue GPUs 2022-03-22 15:04:55 +00:00
meson.build dri: Remove the megadriver compat stub 2022-03-31 09:58:49 -04:00
meson_options.txt microsoft: Initial vulkan-on-12 driver 2022-03-25 16:21:45 +00:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
VERSION VERSION: bump version for 22.0 release 2022-02-02 22:49:09 +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.