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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
d7ba52cce9
Most modern hardware needs the edge flag added as a hidden vertex input and needs code added to the vertex shader to copy the input to an output. Intel hardware is a little different. Gfx4 and Gfx5 hardware works in the previously described mannter. Gfx6+ hardware needs the edge flag as a specific vertex shader input, and that input is magically processed by fixed-function hardware without need for extra shader code. This flag signals only that the vertex shader input is needed. It would be nice if we could decouple adding the vertex shader input from generating the copy-to-output code, but that has proven to be challenging. Not having that code causes other passes to want to eliminate that shader input. v2: Convert conditional to assertion. This pass is only called for vertex shaders. Suggested by Ken. Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12858> |
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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.