Sviatoslav Peleshko
f03432c81a
Per ARB_vertex_program spec result registers are 4-component and initially undefined, and the FF fragment program expects its intputs to be 4-component too. So, if the client's vertex program does not write the whole vector it will cause misrenderings unless the same client also supplies fragment program that expects less than 4 componens. This commit adds a workaround that initializes results to vec4(0, 0, 0, 1) which seems to be an expected behavior for such clients. Cc: mesa-stable Signed-off-by: Sviatoslav Peleshko <sviatoslav.peleshko@globallogic.com> Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38295>
`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.