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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
8dcf7648f1
Now we support all the vertex formats! This means we don't hit u_vbuf for format translation, which helps performance in lots of applications. By doing the lowering in NIR, the vertex fetch code itself can be optimized by NIR (e.g. nir_opt_algebraic) which can improve generated code quality. In my first implementation of this, I had a big switch statement mapping format enums to interchange formats and post-processing code. This ends up being really unwieldly, the combinatorics of bit packing + conversion + swizzles is enormous and for performance we want to support everything (no u_vbuf fallbacks). To keep the combinatorics in check, we rely on parsing the util_format_description to separate out the issues of bit packing, conversion, and swizzling, allowing us to handle bizarro formats like B10G10R10A2_SNORM with no special casing. In an effort to support everything in one shot, this handles all the formats needed for the extensions EXT_vertex_array_bgra, ARB_vertex_type_2_10_10_10_rev, and ARB_vertex_type_10f_11f_11f_rev. Passes dEQP-GLES3.functional.vertex_arrays.* Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19996> |
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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.