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55d80bc20a
Previously a predicated BREAK that appeared immediately before the WHILE would get merged into the WHILE. This doesn't work if other flow control (e.g., a CONT) can transfer directly to the WHILE. On Intel platforms, this fixes the CTS test dEQP-VK.graphicsfuzz.stable-binarysearch-tree-nested-if-and-conditional. No shader-db changes on any Intel platform. When this commit was first created (over a month before it is going to land), there were some regressions that were prevented by other commits in MR !13095. That does not appear to be the case now, so I don't know what changed. Basically, the treatment of discard as a combination of demote and terminate causes additional continues in some loops, and those continues trigger this bug. The other commits from that MR prevent those continues from being generated in the first place. All Intel platforms had simlar fossil-db results. (Ice Lake shown) Instructions in all programs: 144419989 -> 144419995 (+0.0%) SENDs in all programs: 6947332 -> 6947332 (+0.0%) Loops in all programs: 38277 -> 38277 (+0.0%) Spills in all programs: 204075 -> 204075 (+0.0%) Fills in all programs: 319480 -> 319480 (+0.0%) A few shaders in Doom 2016 were hurt by one instruction each. It seems likely that these shaders would have experienced at least some mis-rendering. Closes: #4213 Fixes: |
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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.