Ian Romanick
5667459ff1
If the source -1.0 < x < 0.0, simply removing the ftrun will introduce undefined behavior. By chance of how at least Intel and NVIDIA GPUs implement f2u, this has Just Worked. No shader-db changes on any Intel platform. fossil-db: Lunar Lake Totals: Instrs: 913264354 -> 913264366 (+0.00%) Cycle count: 104953995530 -> 104953996854 (+0.00%) Max live registers: 189266026 -> 189266058 (+0.00%) Non SSA regs after NIR: 227779417 -> 227779369 (-0.00%) Totals from 24 (0.00% of 1984794) affected shaders: Instrs: 4669 -> 4681 (+0.26%) Cycle count: 50610 -> 51934 (+2.62%) Max live registers: 1222 -> 1254 (+2.62%) Non SSA regs after NIR: 1174 -> 1126 (-4.09%) Meteor Lake, DG2, Tiger Lake, and Ice Lake had similar results. (Meteor Lake shown) Totals: Instrs: 1001288026 -> 1001288038 (+0.00%) Cycle count: 92813392671 -> 92813392791 (+0.00%) Max live registers: 121935383 -> 121935399 (+0.00%) Max dispatch width: 19949928 -> 19949912 (-0.00%) Totals from 2 (0.00% of 2284670) affected shaders: Instrs: 1380 -> 1392 (+0.87%) Cycle count: 18940 -> 19060 (+0.63%) Max live registers: 136 -> 152 (+11.76%) Max dispatch width: 32 -> 16 (-50.00%) No fossil-db changes on Skylake. Suggested-by: Georg Lehmann Reviewed-by: Georg Lehmann <dadschoorse@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37186>
`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.