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Juan A. Suarez Romero 4d0b8a9d32 v3d: reinterpret stencil data as uint texture in stencil blit path
There is a path to blit stencil buffers reinterpreting the stencil data
as an RGBA8888 or R8 float texture.

This works fine except for the case when the stencil buffer is
multisampled, and the blit operation needs to resolve it: an average of
the samples is done, which is incorrect, as only one sample must be
used.

This can be observed n the piglit test
`ext_framebuffer_multisample-unaligned-blit 2 stencil downsample -auto
-fbo`, specifically in the triangles border.

To avoid this averaging, let's reinterpret the stencil data as RGBA8888
or R8 uint texture.

Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8361>
2021-01-07 16:09:31 +00:00
.appveyor appveyor: Use Python3. 2020-08-06 09:46:48 +00:00
.gitlab/issue_templates gitlab: add RADV bug report template 2020-12-18 08:03:04 +00:00
.gitlab-ci freedreno: Disable UBWC on z24s8 on a630. 2021-01-06 22:54:14 +00:00
bin bin/gen_calendar_entries: Add support for making a release 2021-01-07 00:07:56 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs bin: Add script for manipulating the release calendar 2021-01-07 00:07:56 +00:00
doxygen doxygen: Plumb through gallium/ to automated documentation 2016-05-30 17:53:45 +01:00
include dri: add image cleanup callback to loader extensions 2020-12-15 06:05:27 +00:00
scons util: Allow STATIC_ASSERT() everywhere 2020-12-10 16:48:36 +00:00
src v3d: reinterpret stencil data as uint texture in stencil blit path 2021-01-07 16:09:31 +00:00
subprojects d3d12: Use DirectX-Headers wrap for d3d12.h 2020-12-16 16:25:54 +00:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig docs: fixup indentation 2020-01-18 11:39:32 +01:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml freedreno: Enable GLSL 3.30, updating us to GL 3.3 contexts 2021-01-06 15:54:54 +00:00
.mailmap .mailmap: add and update aliases for Danylo Piliaiev 2020-12-04 15:08:30 +00:00
.travis.yml travis: autodetect python version instead of hard-coding it 2019-12-21 20:23:08 +00:00
Android.common.mk tree-wide: fix deprecated GitLab URLs 2020-05-23 15:33:50 +00:00
Android.mk ac/llvm: handle static/shared llvm init separately 2020-08-17 10:47:41 +00:00
appveyor.yml appveyor: Use Python3. 2020-08-06 09:46:48 +00:00
CleanSpec.mk CleanSpec.mk: Remove HOST_OUT_release 2018-08-02 15:42:40 -06:00
common.py scons: Print a deprecation warning about using scons on not windows 2019-10-24 18:33:50 +00:00
meson.build meson: Add _GNU_SOURCE for Haiku to activate non-posix functions 2021-01-04 21:18:54 -06:00
meson_options.txt swrast: Remove the classic swrast DRI driver 2020-12-31 00:15:29 +00:00
README.rst README: update references to internal docs 2020-06-13 10:42:01 +00:00
REVIEWERS REVIEWERS: add VMware reviewers 2019-10-18 16:42:40 +00:00
SConstruct tree-wide: fix deprecated GitLab URLs 2020-05-23 15:33:50 +00:00
VERSION Bump version for 21.0 devel 2020-11-09 16:20:45 -08:00

`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 `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.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.