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The big discovery is the "number of uniform registers" field. I learned about this one accidentally when my preamble shaders weren't working right, because we had inadvertently hardcoded "at most 32 registers" :-) In the course of identifying that field, I found that the pipeline address is used as a tagged pointer, with some unknown field in the bottom bits and alignment demanded. The XML is updated to account for this. I later found that there's also a "number of general purpose registers used by the preamble shader" field. I missed this one first, because the encoding is slightly different from the usual "number of general purpose registers in the main shader" field. The specification is slightly coarser. I don't know why the hardware needs that information anyway -- occupancy of the preamble shader should be irrelevant -- but it's not a big deal. Finally I found that the "more than 4 textures?" bit is... not that. I do not yet know what it is, but it is... not that. These all use the new groups() modifier for GenXML Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18813>
`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.