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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
74658b01d2
Intel has different Z interpolation float point rounding than other mesa gpus For example gl_Position.z = 0.0 will be interpolated to gl_FragCoord.z = 0.5 for all gpus gl_FragCoord = -0.00000001 will be interpolated to gl_FragCoord.z = 0.4999999702 for Intel and rounded to gl_FragCoord.z = 0.5 for other gpus Games with LEQUAL depth func will fail depth test on Intel and will pass it on other gpus in such case This workaround lowers translated depth range and several gl_FragCoord.z coords with extra small difference will be translated to the same UINT16\UINT24\UINT32 value of an integer depth buffer Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7199 Signed-off-by: Illia Polishchuk <illia.a.polishchuk@globallogic.com> Reviewed-by: Tapani Pälli <tapani.palli@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18412> |
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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.