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author | Trevor Woerner <twoerner@gmail.com> | 2017-06-11 15:43:50 -0400 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-06-12 15:04:12 +0100 |
commit | 6fd63e24a1c6ac901edb393c9db8e245189a83e2 (patch) | |
tree | 34546a50431f0196926c97a04ebb9c7173ece4b1 /meta/recipes-graphics/mesa/mesa.inc | |
parent | 13024ce5aae453769b546d5fbe533443aec3d6fd (diff) | |
download | openembedded-core-contrib-6fd63e24a1c6ac901edb393c9db8e245189a83e2.tar.gz |
mesa.inc: enable texture float for gallium
Following the lead from Fedora (as suggested by Rob Clark) always enable
--enable-texture-float for all gallium drivers, but then modify the code to
not enable it, at runtime, where the implementation isn't backed by hardware.
The patch comes from unpacking fedora-25's mesa-17.0.5-3.fc25.src.rpm from
https://dl.fedoraproject.org/pub/fedora/linux/updates/25/SRPMS/m/
Somewhere along the path from OpenGL ES 2.0 to OpenGL ES 3.0 are some
algorithms that are encumbered by patents. These algorithms are enabled
with mesa's --enable-texture-float configure flag. However, if hardware
acceleration is being used and the hardware supports --enable-texture-float,
it means the hardware vendor has paid for the patents.
Note that with this solution, non-hardware gallium drivers (e.g. swrast) can't
--enable-texture-float, which might cause issues with some piglit tests.
This solution was discussed and agreed-to on the mailing list:
http://lists.openembedded.org/pipermail/openembedded-core/2017-May/137233.html
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-graphics/mesa/mesa.inc')
-rw-r--r-- | meta/recipes-graphics/mesa/mesa.inc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/meta/recipes-graphics/mesa/mesa.inc b/meta/recipes-graphics/mesa/mesa.inc index 014044f381..04285f209a 100644 --- a/meta/recipes-graphics/mesa/mesa.inc +++ b/meta/recipes-graphics/mesa/mesa.inc @@ -64,7 +64,7 @@ GALLIUMDRIVERS_LLVM = "r300,svga,nouveau${@',${GALLIUMDRIVERS_LLVM33}' if ${GALL GALLIUMDRIVERS_append_x86 = "${@bb.utils.contains('PACKAGECONFIG', 'gallium-llvm', ',${GALLIUMDRIVERS_LLVM}', '', d)}" GALLIUMDRIVERS_append_x86-64 = "${@bb.utils.contains('PACKAGECONFIG', 'gallium-llvm', ',${GALLIUMDRIVERS_LLVM}', '', d)}" # keep --with-gallium-drivers separate, because when only one of gallium versions is enabled, other 2 were adding --without-gallium-drivers -PACKAGECONFIG[gallium] = "--with-gallium-drivers=${GALLIUMDRIVERS}, --without-gallium-drivers" +PACKAGECONFIG[gallium] = "--enable-texture-float --with-gallium-drivers=${GALLIUMDRIVERS}, --without-gallium-drivers" MESA_LLVM_RELEASE ?= "3.3" PACKAGECONFIG[gallium-llvm] = "--enable-gallium-llvm --enable-llvm-shared-libs, --disable-gallium-llvm, llvm${MESA_LLVM_RELEASE} \ ${@'elfutils' if ${GALLIUMDRIVERS_LLVM33_ENABLED} else ''}" |