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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
65a917cb6e
VKD3D-Proton DXBC f32 to f16 conversion implements a float conversion using PackHalf2x16. Because the spec does not specify a rounding mode, it emits a sequence to ensure D3D-like behaviour for infinity. When we know the current backend has pack_half_2x16_rtz_split, we can eliminate the extra sequence. Fossil DB stats on GFX11: Totals from 835 (0.62% of 134913) affected shaders: VGPRs: 49368 -> 49224 (-0.29%) CodeSize: 5341956 -> 5124564 (-4.07%) Instrs: 1024062 -> 987041 (-3.62%) Latency: 6530956 -> 6465120 (-1.01%); split: -1.01%, +0.00% InvThroughput: 908189 -> 870253 (-4.18%) VClause: 18704 -> 18702 (-0.01%); split: -0.02%, +0.01% SClause: 33406 -> 33284 (-0.37%); split: -0.38%, +0.01% Copies: 67440 -> 65992 (-2.15%); split: -2.15%, +0.00% Branches: 18498 -> 18465 (-0.18%) PreSGPRs: 38409 -> 38331 (-0.20%) PreVGPRs: 44089 -> 43834 (-0.58%) Note, some fossils are from before this pattern was added to VKD3D-Proton, so the above may not reflect real-world impact. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Reviewed-by: Georg Lehmann <dadschoorse@gmail.com> Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15838> |
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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.