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7f1ed1e411
We can end up in this situation in cases where the application uses a
layout that allows both rendering and sampling from a depth surface,
since in such cases we will attempt to render with HIZ CCS WT usage as
a side effect of using ISL_AUX_USAGE_HIZ_CCS_WT for all layouts that
allow the image to be sampled from.
Disabling fast clears for that case isn't expected to cause
performance regression since before this series for HiZ CCS non-WT
images transitioning to such a layout we would have issued a full
resolve and used ISL_AUX_USAGE_NONE, which also doesn't support fast
clears.
Multisample depth images should still get fast clears after this
commit in cases where the rendering and sampling is split into
separate render pasess with a layout transition between them that
transitions the image from a W/O layout into a R/W one -- Such
transitions will be handled with a relatively cheap partial resolve in
a subsequent commit.
v2: Add details of additional findings about these hardware issues in
comment.
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
v3: Pass aspect bit consistent with layout to
anv_layout_to_aux_usage() instead of defaulting to
VK_IMAGE_ASPECT_DEPTH_BIT.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31139>
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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.