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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
9c81db8adb
This avoids lowering of CS system values by GLSL (configured by state
tracker). In i965 we don't use that lowering, and we also shouldn't
need that in Iris.
Using it cause some unnecessary round trip between values, e.g.:
shader uses gl_LocalInvocationIndex, GLSL rewrites it in terms of
gl_LocalInvocationID, then driver rewrites those in terms of
gl_LocalInvocationIndex again. Copy propagation can make some of
those go away, but not all as seen below.
Intel SKL shader-db results:
total instructions in shared programs: 15595189 -> 15594556 (<.01%)
instructions in affected programs: 74880 -> 74247 (-0.85%)
helped: 81
HURT: 4
helped stats (abs) min: 2 max: 172 x̄: 7.88 x̃: 4
helped stats (rel) min: 0.19% max: 5.66% x̄: 1.71% x̃: 1.23%
HURT stats (abs) min: 1 max: 2 x̄: 1.25 x̃: 1
HURT stats (rel) min: 0.45% max: 1.65% x̄: 0.76% x̃: 0.46%
95% mean confidence interval for instructions value: -11.56 -3.34
95% mean confidence interval for instructions %-change: -1.91% -1.28%
Instructions are helped.
total loops in shared programs: 4831 -> 4831 (0.00%)
loops in affected programs: 0 -> 0
helped: 0
HURT: 0
total cycles in shared programs: 372136618 -> 372145628 (<.01%)
cycles in affected programs: 9218230 -> 9227240 (0.10%)
helped: 131
HURT: 86
helped stats (abs) min: 1 max: 798 x̄: 39.79 x̃: 12
helped stats (rel) min: <.01% max: 6.75% x̄: 0.42% x̃: 0.13%
HURT stats (abs) min: 2 max: 2442 x̄: 165.38 x̃: 6
HURT stats (rel) min: <.01% max: 20.83% x̄: 0.74% x̃: 0.12%
95% mean confidence interval for cycles value: -2.07 85.11
95% mean confidence interval for cycles %-change: -0.22% 0.30%
Inconclusive result (value mean confidence interval includes 0).
total spills in shared programs: 11956 -> 11950 (-0.05%)
spills in affected programs: 77 -> 71 (-7.79%)
helped: 3
HURT: 0
total fills in shared programs: 25619 -> 25549 (-0.27%)
fills in affected programs: 593 -> 523 (-11.80%)
helped: 4
HURT: 0
LOST: 0
GAINED: 0
Total CPU time (seconds): 1695.69 -> 1706.03 (0.61%)
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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| bin | ||
| build-support | ||
| docs | ||
| doxygen | ||
| include | ||
| scons | ||
| scripts | ||
| src | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .mailmap | ||
| .travis.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| appveyor.yml | ||
| CleanSpec.mk | ||
| common.py | ||
| meson.build | ||
| meson_options.txt | ||
| README.rst | ||
| REVIEWERS | ||
| SConstruct | ||
| VERSION | ||
`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.html <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.html <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.html <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.html <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses email mailing-lists for patches submission, review and discussions.