252c59602e
Bifrost LDEXP.v2f16 takes a 16-bit exponent, which requires messy lowering. The codegen for this is quite bad currently, but would be improved by implementing unpack_32_2x16_split_*, and by fusing comparisons with CSEL. The main alternative is converting to F32, then LDEXP.f32, then converting back to F16. This has better codegen for dynamic exponents currently, but worse in the common case with a constant exponent where all the saturating cast logic can be folded. Fixes dEQP-VK.glsl.builtin.precision_fp16_storage16b.ldexp.compute.vec2 when shaderFloat16 is enabled in panvk. Signed-off-by: Benjamin Lee <benjamin.lee@collabora.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Acked-by: Rebecca Mckeever <rebecca.mckeever@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33637>
`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.