Timur Kristóf
f629fbd778
Task shader outputs work differently than other shaders, so they need special consideration. Essentially, they have two kinds of outputs: 1. Number of mesh shader workgroups to launch. Will be still represented by a shader output. 2. Optional payload of up to (at least) 16K bytes. These payload variables behave similarly to shared memory, but the spec doesn't actually define them as shared memory (also, they may be implemented differently by each backend), so we need to add a new NIR variable mode for them. These payload variables can't be represented by shader outputs because the 16K bytes don't fit the 32x vec4 model that NIR uses for its output variables. This patch adds a new NIR variable mode: nir_var_mem_task_payload and corresponding explicit I/O intrinsics, as well as support for this new mode in nir_lower_io. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Caio Oliveira <caio.oliveira@intel.com> Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14930>
`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://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <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 `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://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.