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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
8e294e6aee
Replace the TLB-based meta_fill_buffer path on V3D 7.1+ with a TFU raster-to-raster copy that broadcasts a single staging row across the output via iis=0 (stride-0 input). This eliminates the per-fill CL render job and its tile_alloc/TSDA BO overhead, which is substantial on workloads that issue many small fills (e.g. WebGPU lazy buffer initialization in Dawn). The staging BO holding one row of the fill pattern is cached on the command buffer and reused across fills with the same data value, so sequences of identical-pattern fills share a single staging BO. The existing TLB-based fill is kept as a fallback and is also used when V3D_DEBUG=disable_tfu is set, or on V3D simulator builds where the stride-0 TFU input mode is not supported and would assert. Assisted-by: Claude Opus 4.7 Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41725> |
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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://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.