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2d584d7386
A while back, Michael Larabel noticed that Paraview's Wavelet Volume case runs significantly slower on iris than i965. It turns out this is because we enable CCS_E for 32-bit floating point formats, while i965 disables it, with an oblique comment saying that we benchmarked it (on what exactly?) and determined that it was a loss. Paraview uses both R32_FLOAT and R32G32B32A32_FLOAT, and I observed large framerate drops when enabling CCS_E for either format. However, several other benchmarks (Aztec Ruins, many Synmark cases) use 16-bit floating point formats, with no apparent ill effects. So, disable compression for 32-bit float formats for now, but leave it enabled for 16-bit float formats as they seem to be working fine. Improves performance in Paraview's Wavelet Volume test by 62% on a Skylake GT4e. Fixes: |
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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.html <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.html <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 `Freenode's #dri-devel <irc://chat.freenode.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.html <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.html <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses email mailing-lists for patches submission, review and discussions.