9167324a86
This also prevents some fossil-db regressions in "spir-v: Mark floating point comparisons exact". v2: Mark the fmin / fmax in the replacement exact to prevent other optimizations from ruining the NaN-clensing property of the fmin / fmax. Suggested by Rhys. Don't assume that constants are not NaN because some components of a vector might be NaN while others are numbers. Noticed by Rhys. This causes ~8 more shaders in Age of Wonders III (dxvk) to regress on cycles (not instructions) by less than 1% when "spir-v: Mark floating point comparisons exact" is applied. This difference is too small to care. All Intel platforms had similar results. (Tiger Lake shown) total instructions in shared programs: 20908668 -> 20908670 (<.01%) instructions in affected programs: 9196 -> 9198 (0.02%) helped: 10 HURT: 5 helped stats (abs) min: 1 max: 2 x̄: 1.40 x̃: 1 helped stats (rel) min: 0.02% max: 5.41% x̄: 2.20% x̃: 2.16% HURT stats (abs) min: 2 max: 6 x̄: 3.20 x̃: 3 HURT stats (rel) min: 2.44% max: 16.67% x̄: 9.39% x̃: 12.50% 95% mean confidence interval for instructions value: -1.22 1.49 95% mean confidence interval for instructions %-change: -2.08% 5.41% Inconclusive result (value mean confidence interval includes 0). total cycles in shared programs: 473515330 -> 473515288 (<.01%) cycles in affected programs: 67146 -> 67104 (-0.06%) helped: 10 HURT: 7 helped stats (abs) min: 1 max: 36 x̄: 15.90 x̃: 17 helped stats (rel) min: 0.01% max: 1.29% x̄: 0.66% x̃: 0.89% HURT stats (abs) min: 1 max: 48 x̄: 16.71 x̃: 4 HURT stats (rel) min: 0.08% max: 1.94% x̄: 0.87% x̃: 0.19% 95% mean confidence interval for cycles value: -13.88 8.94 95% mean confidence interval for cycles %-change: -0.56% 0.49% Inconclusive result (value mean confidence interval includes 0). Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6358> |
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| .gitlab-ci | ||
| bin | ||
| build-support | ||
| docs | ||
| doxygen | ||
| include | ||
| scons | ||
| src | ||
| subprojects | ||
| .dir-locals.el | ||
| .editorconfig | ||
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| .mailmap | ||
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| Android.common.mk | ||
| Android.mk | ||
| CleanSpec.mk | ||
| README.rst | ||
| REVIEWERS | ||
| SConstruct | ||
| VERSION | ||
| appveyor.yml | ||
| common.py | ||
| meson.build | ||
| meson_options.txt | ||
README.rst
`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.