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7c76125db2
We had the unfortunate finding on a recent platform to learn that the bindless sampler heap is not functioning as expected. Nowhere in the documentation is the size of the heap written down. So most people assumed that's the max number that we can program (4Gb). The reality is that it's only 64Mb. Though it is appearing like it's working properly for the whole 4Gb range for most apps, this is only because the HW bounds checking applied is broken. Instead of clamping anything beyong 64Mb, it's only clamping the last 4Kb of each 64Mb region. So this heap is useless for us to make a 4Gb region of both sampler & surface states... This change essentially turns off the bindless sampler heap on DG2+. The only location where we can put SAMPLER_STATE elements is the dynamic state heap. Unfortunately we cannot align the dynamic state heap with the bindless surface state heap. So the solution is to allocate sampler & surface states separately, each from the own heap in the descriptor pool. We now have to provide 2 sets of offsets for surfaces & samplers. Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Rohan Garg <rohan.garg@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25897> |
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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.