Alyssa Rosenzweig
2adf35e4f5
The mesa/st flips the viewport, so we respect that rather than trying to flip the framebuffer itself and ignoring the viewport and using a messy heuristic. However, this brings an underlying disagreement about the interpretation of winding order to light. The blob uses a different strategy than Mesa for handling viewport Y flipping, so the meanings of the winding order bit are flipped for it. To keep things clean on our end, we rename to explicitly use Gallium (rather than flipped OpenGL) conventions. Fixes upside-down Xwayland/egl windows. v2: Adjust lowering configuration to correctly flip gl_PointCoord.y and gl_FragCoord.y. v1 was R-b'd by Tomeu, but then retracted due to these regressions which are not fixed. Suggested-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Sort-of-reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
`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.html <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.html <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 `Freenode's #dri-devel <irc://chat.freenode.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.html <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.html <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses email mailing-lists for patches submission, review and discussions.