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2e654db27a
A lot of the brw_*_prog_key fields are for emulating features on legacy hardware that iris doesn't support. In particular, all of the texture swizzle fields take up a lot of space. These dead fields make hashing the shader keys more expensive than it ought to be. We introduce iris-specific keys with only the information we need, and translate them to brw keys when actually compiling new variants. This way, key comparisons can use the small keys. The size reductions are: VS: 328 bytes -> 8 bytes TCS: 312 bytes -> 24 bytes TES: 304 bytes -> 24 bytes GS: 284 bytes -> 8 bytes FS: 304 bytes -> 16 bytes CS: 280 bytes -> 4 bytes Scores for the Piglit drawoverhead microbenchmark case with a shader program change improve by roughly 30%. Reviewed-by: Eric Anholt <eric@anholt.net> |
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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.