Find a file
Alyssa Rosenzweig e3328dfa2f brw: only initialize sample mask flag if needed
This is a refinement of 7c129d9365 ("intel/brw/xe2+: Keep PS sample mask in the
f1.0 register whether or not kill is used."). Rather than always insert this
move, do so only when we'll actually read the register: for memory writes and
for discards. This deletes an instruction from piles of fragment shaders.

shader-db on LNL:

total instructions in shared programs: 17134031 -> 17042706 (-0.53%)
instructions in affected programs: 9065743 -> 8974418 (-1.01%)
helped: 65045
HURT: 0
helped stats (abs) min: 1.0 max: 3.0 x̄: 1.40 x̃: 1
helped stats (rel) min: <.01% max: 50.00% x̄: 3.06% x̃: 1.64%
95% mean confidence interval for instructions value: -1.41 -1.40
95% mean confidence interval for instructions %-change: -3.10% -3.03%
Instructions are helped.

total cycles in shared programs: 885172098 -> 884835306 (-0.04%)
cycles in affected programs: 590294230 -> 589957438 (-0.06%)
helped: 53636
HURT: 4500
helped stats (abs) min: 2.0 max: 1126.0 x̄: 8.02 x̃: 4
helped stats (rel) min: <.01% max: 50.00% x̄: 1.24% x̃: 0.24%
HURT stats (abs)   min: 2.0 max: 7706.0 x̄: 20.77 x̃: 6
HURT stats (rel)   min: <.01% max: 82.06% x̄: 1.09% x̃: 0.54%
95% mean confidence interval for cycles value: -6.15 -5.43
95% mean confidence interval for cycles %-change: -1.10% -1.02%
Cycles are helped.

LOST:   385
GAINED: 47

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38665>
2025-11-26 16:53:36 +00:00
.ci-farms Revert "ci: disable mupuf's farm" 2025-11-24 15:52:43 +00:00
.ci-farms-disabled Revert "ci: disable mupuf's farm" 2025-11-24 15:52:43 +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: Uprev crosvm and virglrenderer 2025-11-26 15:04:25 +00:00
.marge/hooks ci: pipeline_message: reset empty errors 2025-01-07 05:08:10 +00:00
android android: fix building rules for i915, r300 2025-10-08 23:43:33 +02:00
bin bin/gen_release_notes: Remove duplicate bug entires 2025-11-17 22:45:13 +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 radv: Advertise sparse features pre Polaris with perftest flag 2025-11-25 10:39:21 +01:00
include vulkan: update spec to 1.4.333 2025-11-14 19:06:28 +01:00
licenses licenses: add missing licenses 2025-01-08 20:37:51 +00:00
src brw: only initialize sample mask flag if needed 2025-11-26 16:53:36 +00:00
subprojects meson: add libva wrap and fallback option 2025-11-25 13:37:49 +00:00
.clang-format meson: enable the clang-format target 2023-05-29 11:57:08 +00:00
.clang-format-ignore ci: enforce formatting for RADV & ACO 2023-06-16 19:59:52 +00:00
.clang-format-include ethos: Initial commit of a driver for the Arm Ethos-U65 NPU. 2025-10-15 20:10:15 +00:00
.dir-locals.el
.editorconfig editorconfig: Set for glsl files 2025-11-14 19:31:17 +00:00
.git-blame-ignore-revs radv: Add re-format commit to .git-blame-ignore-revs 2025-11-12 07:55:36 +00:00
.gitattributes gitlab: Highlight .cl as C 2023-11-02 11:37:46 +00:00
.gitignore intel/mda: Add code to produce mesa debug archives 2025-09-24 23:08:45 -07:00
.gitlab-ci.yml ci: use $CI_TRON_JOB_PRIORITY tag on all ci-tron jobs 2025-11-24 12:02:40 +00:00
.graphqlrc.yml
.mailmap mailmap: update my name and email 2025-11-03 22:08:48 +00:00
.mr-label-maker.yml mr-label-maker: Add KosmicKrisp 2025-10-21 02:28:09 +00:00
.shellcheckrc ci: move shellcheck options to .shellcheckrc 2024-10-24 22:43:03 +00:00
CODEOWNERS CODEOWNERS: Add KosmicKrisp owners 2025-10-21 02:28:09 +00:00
meson.build meson: add libva wrap and fallback option 2025-11-25 13:37:49 +00:00
meson.options meson: add libva wrap and fallback option 2025-11-25 13:37:49 +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 26.0 2025-10-16 03:31:58 +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.