Jose Maria Casanova Crespo
5b951bcdd7
The Early-Z optimization is disabled when there is a discard instruction in the shader used in the draw call. But if discard is the only reason to disable Early-Z, and at draw call time the updates in the draw call are disabled we can enable Early-Z using a shader variant. If there are occlussion queries active we also need to disable Early-z optimization. So this patch enables Early-Z in this scenario. The performance improvement is significant when running gfxbench benchmark showing an average improvement of 11.15% fps_avg helped: gl_gfxbench_aztec_high.trace: 3.13 -> 3.73 (19.13%) fps_avg helped: gl_gfxbench_aztec.trace: 4.82 -> 5.68 (17.88%) fps_avg helped: gl_gfxbench_manhattan31.trace: 5.10 -> 6.00 (17.59%) fps_avg helped: gl_gfxbench_manhattan.trace: 7.24 -> 8.36 (15.52%) fps_avg helped: gl_gfxbench_trex.trace: 19.25 -> 20.17 ( 4.81%) Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> Cc: mesa-stable Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32028>
`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://docs.mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_): .. code-block:: sh $ meson setup build $ ninja -C build/ $ sudo ninja -C build/ 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://docs.mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://docs.mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.