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URB messages on Xe2 are LSC messages with FLAT addressing. We can specify a S19 immediate offset in the extended message descriptor, which should be more than adequate to hold any offsets we need. We wrote the original URB code before implementing that, and never doubled back to take advantage of it. But doing so can drop ADDs near every URB access. fossil-db results on Battlemage: Totals: Instrs: 232239759 -> 231432254 (-0.35%) Cycle count: 34044435848.0 -> 34055507100.0 (+0.03%); split: -0.00%, +0.04% Spill count: 520370 -> 520362 (-0.00%); split: -0.00%, +0.00% Fill count: 470790 -> 470803 (+0.00%); split: -0.00%, +0.00% Max live registers: 72111853 -> 72111369 (-0.00%); split: -0.00%, +0.00% Totals from 227920 (28.89% of 788851) affected shaders: Instrs: 59841897 -> 59034392 (-1.35%) Cycle count: 683385208.0 -> 694456460.0 (+1.62%); split: -0.14%, +1.76% Spill count: 17278 -> 17270 (-0.05%); split: -0.10%, +0.06% Fill count: 17481 -> 17494 (+0.07%); split: -0.03%, +0.10% Max live registers: 23052652 -> 23052168 (-0.00%); split: -0.00%, +0.00% Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Rohan Garg <rohan.garg@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38899>
`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.