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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
9fb4b1e6dc
D3D11 is pretty strict about how to do centroid interpolation. In particular, llvmpipe didn't honor these rules when no sample was covered for a pixel (relevant for helper pixels), in this case llvmpipe selected the position of the sample with the highest index (just due to initialization, not really by choice). Given that helper pixels are only really used for derivative calculations, and derivatives are generally sketchy with centroid interpolation, this seems quite a lot of work, but I suppose it could be useful if the state sample mask has only 1 sample set (since these d3d11 rules then guarantee that even with centroid the derivatives are actually useful as the interpolation will be done at the position defined by the sample specified in the sample mask, regardless if that sample is covered by the primitive or not). Other APIs might technically not need this (they tend to not even define at which position centroid interpolation is done, other than it must be inside the primitive), but it shouldn't really hurt them neither. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38664> |
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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://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.