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02f6995d76
Aligning phys_level0_sa by the compression block dimension prior to
mipmap layout causes the layout of compressed surfaces to differ from
the sampler's expectations in certain cases. The hardware docs agree:
From the BDW PRM, Vol. 5, Compressed Mipmap Layout,
The compressed mipmaps are stored in a similar fashion to
uncompressed mipmaps [...]
The following exceptions apply to the layout of compressed (vs.
uncompressed) mipmaps:
* [...]
* The dimensions of the mip maps are first determined by applying
the sizing algorithm presented in Non-Power-of-Two Mipmaps
above. Then, if necessary, they are padded out to compression
block boundaries.
The last bullet indicates that alignment should not be done for
calculating a miplevel's dimensions, but rather for determining miplevel
placement/padding. Comply with this text by removing the extra
alignment.
Fixes some fbo-generatemipmap-formats piglit failures on all tested
platforms (SNB-KBL).
v2:
- Note fixed platforms.
- Update some consumers via a helper function.
Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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| README.rst | ||
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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.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.