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Appendix A: Vulkan environemtn for SPIR-V says: Operations described as “correctly rounded” will return the infinitely precise result, x, rounded so as to be representable in floating-point. The rounding mode is not specified, unless the entry point is declared with the RoundingModeRTE or the RoundingModeRTZ Execution Mode. Conversion between types are classified as correctly rounded, so let's do rounding correctly. v2: check rounding mode for destination bit size (Georg) Fixes upcoming Vulkan CTS tests: dEQP-VK.spirv_assembly.instruction.compute.float_controls.fp32.input_args.rounding_rtz_conv_from_uint64_up dEQP-VK.spirv_assembly.instruction.compute.float_controls.fp32.input_args.rounding_rtz_conv_from_int64_up dEQP-VK.spirv_assembly.instruction.graphics.float_controls.fp32.input_args.rounding_rtz_conv_from_uint64_up_vert dEQP-VK.spirv_assembly.instruction.graphics.float_controls.fp32.input_args.rounding_rtz_conv_from_int64_up_vert dEQP-VK.spirv_assembly.instruction.graphics.float_controls.fp32.input_args.rounding_rtz_conv_from_uint64_up_frag dEQP-VK.spirv_assembly.instruction.graphics.float_controls.fp32.input_args.rounding_rtz_conv_from_int64_up_frag Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25281>
`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.