mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-03-11 11:20:41 +01:00
read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
7dc6fbd5c5
The original MR switched to use a float raw_timestamp_period to scale the raw timestamp outside of the gallium driver. This better matched how vulkan works. But unlike vulkan, gallium has timestamp related queries/APIs that return already scaled time, resulting in small errors if the way the scaling is done differs between driver scaling and frontend scaling. The important thing is that any error introduced by scaling must be the same error across APIs. (In particular, a f64 value cannot preciesly represent an arbitrary u64 value. OTOH the driver's scaling could be simply multiply be an integer. But differing precision errors of the two approachs causes problems when comparing between timestamps that are converted in different ways.) In some, but not all, cases this could be addressed by changing the driver to use the same scaling function, but this is not always possible (if, for ex, the scaling is done on the GPU CP). So switch back to the original approach from !39995, using a pscreen->convert_timestamp() callback, to put the control back in the hands of the driver. Signed-off-by: Rob Clark <rob.clark@oss.qualcomm.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40051> |
||
|---|---|---|
| .ci-farms | ||
| .ci-farms-disabled | ||
| .github/workflows | ||
| .gitlab | ||
| .gitlab-ci | ||
| .marge/hooks | ||
| android | ||
| bin | ||
| build-support | ||
| docs | ||
| include | ||
| licenses | ||
| src | ||
| subprojects | ||
| .clang-format | ||
| .clang-format-ignore | ||
| .clang-format-include | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .graphqlrc.yml | ||
| .mailmap | ||
| .mr-label-maker.yml | ||
| .shellcheckrc | ||
| clippy.toml | ||
| CODEOWNERS | ||
| meson.build | ||
| meson.options | ||
| README.rst | ||
| rustfmt.toml | ||
| VERSION | ||
`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.