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In environments where 3D acceleration is not available, like in a VM, the behavior before commit8cd44b8843("egl: add automatic zink fallback loading between hw and sw drivers") was to fallback to swrast. This was the output of `eglinfo` in that situation: $ eglinfo [...] Wayland platform: EGL driver name: swrast OpenGL core profile renderer: llvmpipe (LLVM 17.0.4, 256 bits) However, after commit8cd44b8843("egl: add automatic zink fallback loading between hw and sw drivers") Zink support is tested before falling back to swrast. Since the system doesn't support 3D acceleration, Zink + software rendering is used instead of swrast causing issues like the ones described in #10146. In this case, `eglinfo` prints: $ eglinfo [...] Wayland platform: EGL driver name: zink OpenGL core profile renderer: zink Vulkan 1.3(llvmpipe (LLVM 17.0.4, 256 bits) (MESA_LLVMPIPE)) This patch ensures that Zink + software rendering is used only when the user opts-in by setting `LIBGL_ALWAYS_SOFTWARE` or `D3D_ALWAYS_SOFTWARE` and swrast is used otherwise. After the patch, the output of `eglinfo` is identical to the one before the regression: $ eglinfo [...] Wayland platform: EGL driver name: swrast OpenGL core profile renderer: llvmpipe (LLVM 17.0.4, 256 bits) Resolves: https://gitlab.freedesktop.org/mesa/mesa/-/issues/10146 Fixes:8cd44b8843("egl: add automatic zink fallback loading between hw and sw drivers") Reviewed-by: Michel Dänzer <mdaenzer@redhat.com> Signed-off-by: José Expósito <jexposit@redhat.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26220> (cherry picked from commit2a71f06f29)
`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.