Pavel Ondračka
f1c9e90146
Turns out that besides the benefits from nir_move_vec_src_uses_to_dest itself, it also creates new opportunities for vectorization. Enable it for vertex shaders, there is a clear instruction win and the only downside is some increased register presure. However this is mostly concerning few Unigine Tropics and Sanctiary shaders where we go 11->14 or 10->13 used registers. According to the docs, the increased register usage would only lower vertex processing concurency if we go over 15 (R300) or 25 (R500) registers, so we should be safe here. Fragment shaders are a mixed bag so leave them be for now. Shader-db RV530 total instructions in shared programs: 129303 -> 128762 (-0.42%) instructions in affected programs: 13887 -> 13346 (-3.90%) helped: 99 HURT: 0 total temps in shared programs: 17355 -> 17543 (1.08%) temps in affected programs: 730 -> 918 (25.75%) helped: 4 HURT: 66 total cycles in shared programs: 197190 -> 196984 (-0.10%) cycles in affected programs: 9998 -> 9792 (-2.06%) helped: 65 HURT: 0 Shader-db RV370: total instructions in shared programs: 84807 -> 84225 (-0.69%) instructions in affected programs: 10203 -> 9621 (-5.70%) helped: 92 HURT: 0 total temps in shared programs: 13036 -> 13231 (1.50%) temps in affected programs: 787 -> 982 (24.78%) helped: 4 HURT: 73 total cycles in shared programs: 133178 -> 132946 (-0.17%) cycles in affected programs: 5911 -> 5679 (-3.92%) helped: 58 HURT: 0 Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25417>
`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 `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://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.