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Nanley Chery 38529675ef iris: Support clears in more GPU-based copies
Commit 7779b1d71b, disabled clear support
when copying to/from color buffers. According to the performance CI, it
falls within a range of commits that introduced a performance regression
on Bioshock Infinite with Tigerlake. Icelake isn't noticeably affected.

By analyzing a trace of the game, I found a couple cases where that
commit added new partial resolves. Update get_copy_region_aux_settings
to avoid them:

- The trace uploads to R8_UNORM textures. On TGL, these enter the
  COMPRESSED_CLEAR state on the upload and are partially resolved before
  every subsequent upload. Thankfully, they keep their initial clear
  color of all zeroes. Since zeros can survive format reinterpretation,
  allow clear support for it.

- The trace copies between RGBA16_FLOAT textures. The ones with zero
  clear color are helped by the optimization above. The ones with
  non-zero clear color are used as source textures. Thankfully on ICL+,
  the clear color used for sampling is in pixel form and can thus be
  sampled from with format reinterpretation. Allow clear support for
  this case.

I haven't tested the actual performance impact of this change, but it
should be beneficial regardless.

Reported-by: Clayton Craft <clayton.a.craft@intel.com>
Reported-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8262>
2020-12-30 23:50:22 +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 ci/panfrost: Disable the flaky gimark trace. 2020-12-30 21:26:05 +00:00
bin mapi: Fix symbols check with ASan enabled. 2020-12-15 19:39:29 +00:00
build-support
docs doc: virgl supports ARB_texture_filter_anisotropic already 2020-12-30 09:02:22 +00:00
doxygen
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 iris: Support clears in more GPU-based copies 2020-12-30 23:50:22 +00:00
subprojects d3d12: Use DirectX-Headers wrap for d3d12.h 2020-12-16 16:25:54 +00:00
.dir-locals.el
.editorconfig
.gitignore
.gitlab-ci.yml freedreno: Enable GLSL 1.50, updating us to GL 3.2 contexts. 2020-12-29 19:37:52 +00:00
.mailmap .mailmap: add and update aliases for Danylo Piliaiev 2020-12-04 15:08:30 +00:00
.travis.yml
Android.common.mk
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
common.py
meson.build microsoft/compiler: Add dedicated spirv_to_dxil libraries 2020-12-22 13:28:21 -08:00
meson_options.txt microsoft/compiler: Add dedicated spirv_to_dxil libraries 2020-12-22 13:28:21 -08:00
README.rst
REVIEWERS
SConstruct
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.