mirror of https://gitlab.freedesktop.org/mesa/mesa
b98955e128
There are two stages to varying assembly in the command stream: creating the varying buffers in the command stream, and creating the varying meta descriptors (also in the command stream) linked to the aforementioned buffers. The previous code for this was ad hoc and brittle, making some invalid assumptions causing unmaintainable workarounds to pile up across the driver (both compiler and command stream side). This patch completely rewrites the varying assembly code. There's a trivial performance penalty (we now memcpy the varying meta to the command stream on draw, rather than on compile). That said, the improvement in flexibility and clarity is well-worth it. The motivator for these changes was support for gl_PointCoord (and eventually point sprites for legacy GL), which was impossible to implement with the old varying assembly code. With the new refactor, it's super easy; support for gl_PointCoord is included with this patch. All in all, I'm quite happy with how this turned out. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> |
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README.rst
`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.