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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
e18cd5452a
This fixes the following CTS test on 32-bit systems:
GTF-GL46.gtf30.GL3Tests.packed_depth_stencil.packed_depth_stencil_init
It does glGetTexImage of a 16-bit SNORM image, requesting 32-bit UNORM
data. In get_tex_rgba_uncompressed, we round trip through float to
handle image transfer ops for clamping. _mesa_format_convert does:
_mesa_float_to_unorm(0.571428597f, 32)
which translated to:
_mesa_lroundevenf(0.571428597f * 0xffffffffu)
which produced different results on 64-bit and 32-bit systems:
64-bit: result = 0x92492500
32-bit: result = 0x80000000
This is because the size of "long" varies between the two systems, and
0x92492500 is too large to fit in a signed 32-bit integer. To fix this,
we switch to the new _mesa_i64roundevenf function which always does the
64-bit operation.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104395
Fixes:
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| .gitlab-ci | ||
| bin | ||
| build-support | ||
| docs | ||
| doxygen | ||
| include | ||
| scons | ||
| scripts | ||
| src | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .mailmap | ||
| .travis.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| appveyor.yml | ||
| CleanSpec.mk | ||
| common.py | ||
| meson.build | ||
| meson_options.txt | ||
| README.rst | ||
| REVIEWERS | ||
| SConstruct | ||
| VERSION | ||
`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.