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Mesa's Gallium3D/llvm needed with nvidia-drivers?
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NathanZachary
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PostPosted: Thu Mar 23, 2017 8:00 pm    Post subject: Mesa's Gallium3D/llvm needed with nvidia-drivers? Reply with quote

Hello all,

I've been reading up on the various OpenGL implementations, and delved a little more deeply into them today when a system update wanted to pull in many additional dependencies. I found that the cause of the additional dependencies was llvm-4.x. As I use the proprietary nvidia-drivers, is there even a need for me to have Gallium3D or llvm support within mesa (or mesa at all, for that matter)? The more I look at it, it seems like the proprietary nvidia-drivers should completely replace mesa. If that's the case, I can get rid of it, llvm, and all of these new dependencies.

Any thoughts or considerations? Will that negatively impact any virtual machines within VirtualBox that don't have direct GPU access?

Thanks for helping me further my understanding.

Cheers,
Nathan Zachary
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Roman_Gruber
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PostPosted: Fri Mar 24, 2017 12:17 am    Post subject: Reply with quote

If your graphics card supports OpenGL natively, then you may not need it. There are packages that depend on mesa.

It seems kde (i need k3b) depends on it.

Code:
ASUS-G75VW roman # equery depends libepoxy
 * These packages depend on libepoxy:
kde-frameworks/kdeclarative-5.32.0 (media-libs/libepoxy)
x11-base/xorg-server-1.19.3 (glamor ? media-libs/libepoxy[X])
                            (wayland ? media-libs/libepoxy)
x11-libs/gtk+-3.22.11 (>=media-libs/libepoxy-1.0[X(+)?,abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
ASUS-G75VW roman # equery depends mesa|grep libepoxy
media-libs/libepoxy-1.4.1


AFAIK gallium3d is not needed for the binary nvidia-drivers.


Settings for many years (9800m gts (was my previous gpu) now 660m gtx)
Code:
ASUS-G75VW roman # grep mesa /etc/portage/package.use
media-libs/mesa -llvm -opencl


@Virtualbox => no idea..
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Ant P.
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PostPosted: Fri Mar 24, 2017 2:02 am    Post subject: Reply with quote

Set USE=-doc on llvm-4.0 to make all the nasty surprise deps go away. It forces the default to on for no good reason.
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NathanZachary
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PostPosted: Wed Mar 29, 2017 2:23 am    Post subject: Reply with quote

Ant P. wrote:
Set USE=-doc on llvm-4.0 to make all the nasty surprise deps go away. It forces the default to on for no good reason.


This took care of the immediate concern:

Code:

>>> 'Selected' packages are slated for removal.
>>> 'Protected' and 'omitted' packages will not be removed.

>>> Waiting 5 seconds before starting...
>>> (Control-C to abort)...
>>> Unmerging in: 5 4 3 2 1
>>> Unmerging (1 of 24) dev-python/sphinx-1.5.2...
>>> Unmerging (2 of 24) dev-python/sphinx_rtd_theme-0.1.9...
>>> Unmerging (3 of 24) dev-python/alabaster-0.7.9...
>>> Unmerging (4 of 24) dev-python/requests-2.13.0...
>>> Unmerging (5 of 24) dev-python/jinja-2.9.5...
>>> Unmerging (6 of 24) dev-python/imagesize-0.7.1...
>>> Unmerging (7 of 24) dev-python/Babel-2.3.4...
>>> Unmerging (8 of 24) dev-python/snowballstemmer-1.2.1...
>>> Unmerging (9 of 24) dev-python/chardet-2.3.0...
>>> Unmerging (10 of 24) dev-python/urllib3-1.20...
>>> Unmerging (11 of 24) dev-python/ndg-httpsclient-0.4.2...
>>> Unmerging (12 of 24) dev-python/pytz-2016.10...
>>> Unmerging (13 of 24) dev-python/markupsafe-0.23...
>>> Unmerging (14 of 24) dev-python/PySocks-1.6.6...
>>> Unmerging (15 of 24) dev-python/pyopenssl-16.2.0...
>>> Unmerging (16 of 24) dev-python/cryptography-1.7.2...
>>> Unmerging (17 of 24) dev-python/pyasn1-0.1.9...
>>> Unmerging (18 of 24) dev-python/enum34-1.1.6...
>>> Unmerging (19 of 24) dev-python/cffi-1.9.1...
>>> Unmerging (20 of 24) virtual/python-ipaddress-1.0-r1...
>>> Unmerging (21 of 24) dev-python/idna-2.4...
>>> Unmerging (22 of 24) dev-python/ipaddress-1.0.18...
>>> Unmerging (23 of 24) dev-python/pycparser-2.17...
>>> Unmerging (24 of 24) dev-python/ply-3.10...
Packages installed:   711
Packages in world:    72
Packages in system:   44
Required packages:    711
Number removed:       24

 * GNU info directory index is up-to-date.


However, @Roman_Gruber, I'm going to play around with the VirtualBox situation when I have a little more time. Thanks for your input. :)

Cheers,
Nathan Zachary
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Jaglover
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PostPosted: Wed Mar 29, 2017 3:01 am    Post subject: Reply with quote

When I had nVidia card the only application that required MESA in my desktop was Firefox, and it was build-time dependency. After FF was installed I could remove MESA and everything kept working just fine.
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Leio
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PostPosted: Wed Mar 29, 2017 1:23 pm    Post subject: Reply with quote

You might need mesa for OpenGL/GLES/EGL/etc standard headers, that is buildtime. nvidia-drivers doesn't provide them (with good reason).
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