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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
1ea987576d
In a fragment shader, r0 is written out with a special branch sequence. r0 is not a real register here, but essentially a pipeline register -- as such, it needs to be written out in full and on time, with hanging dependencies in the bundle. Otherwise, we break up the bundle, which costs an extra ALU cycle and adds a move. When the scheduler ran last thing, we could do this analysis within the scheduler. Now that RA can run after scheduling, that's no longer valid, so we remove the analysis and always break it up (at a performance penalty). Future work can add a post-RA/post-schedule pass to merge writeout blocks if possible. It's a bit of a low-priority next to fixing conformance regressions, of course. Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> |
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| common.py | ||
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| meson_options.txt | ||
| README.rst | ||
| REVIEWERS | ||
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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.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.