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We have been reconstructing/rematerializing uniforms for a while, but we can do this in more scenarios, namely instructions which result is immutable along the execution of a shader across all channels. By doing this we gain the capacity to eliminate TMU spills which not only are slower, but can also make us drop to a fallback compilation strategy. Shader-db results show a small increase in instruction counts caused by us now being able to choose preferential compiler strategies that are intended to reduce TMU latency. In some cases, we are now also able to avoid dropping thread counts: total instructions in shared programs: 12658092 -> 12659245 (<.01%) instructions in affected programs: 75812 -> 76965 (1.52%) helped: 55 HURT: 107 total threads in shared programs: 416286 -> 416412 (0.03%) threads in affected programs: 126 -> 252 (100.00%) helped: 63 HURT: 0 total uniforms in shared programs: 3716916 -> 3716396 (-0.01%) uniforms in affected programs: 19327 -> 18807 (-2.69%) helped: 94 HURT: 50 total max-temps in shared programs: 2161796 -> 2161578 (-0.01%) max-temps in affected programs: 3961 -> 3743 (-5.50%) helped: 80 HURT: 24 total spills in shared programs: 3274 -> 3266 (-0.24%) spills in affected programs: 98 -> 90 (-8.16%) helped: 6 HURT: 0 total fills in shared programs: 4657 -> 4642 (-0.32%) fills in affected programs: 130 -> 115 (-11.54%) helped: 6 HURT: 0 Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15710> |
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`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.