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3e3d75d16a
The bug here is that the DRI context "flags" are intended to alias the GLX context flag values, and they don't, DRI's no-error flag is GLX's reset-isolation flag. GLX (and EGL!) treat no-error as a context attribute, and reset isolation predates Mesa's no-error implementation by several years. The GL_KHR_no_error spec does describe it as a "context flag", though, so maybe that's why we do it as a (DRI) context flag. In order to unalias these we need a new contract with the loader. We remove the old __DRI_NO_ERROR extension, and add a new __DRI_RENDERER_HAS_CONTEXT_NO_ERROR value to query. Loaders can key on that to know to pass no-error-ness through as a context attribute, matching the GLX/EGL calling convention. We go ahead and define __DRI_CTX_FLAG_RESET_ISOLATION as well, and update the drivers to refuse it since we don't support it yet. This means mismatched drivers/loaders will not be able to create no-error contexts. Too bad. If you want performance that badly you can build both things at once. Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12474> |
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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://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.