> * What graphics card do you use, and do you use it with a FOSS
> graphics driver? AFAIK OpenCL pretty much binds me to a
> proprietary driver ? right?
That is my understanding on graphics drivers.
My personal experience is that I use no-OpenCL Darktable without any
particularly significant performance issues for relatively ordinary
RAW photo processing, and this is on hardware that is not state of the
art[*]. I don't get realtime response on some adjustments but I'm rarely
left drumming my fingers.
(However I don't export a lot of photos at once and I'm willing to wait
during final exports. People who do high volume exports and don't want
to wait may have a different experience.)
If you don't care about OpenCL, I believe that almost any graphics card
will do. I currently use a low-end ATI card, but my impression is that
in general most of the Intel graphics hardware currently has the best
open source driver support (although you unfortunately can't get them as
standalone cards, just integrated into motherboard chipsets). I'm not up
on whether you want an ATI card or an nVidia card these days for the best
open source driver support.
- cks
[*: https://utcc.utoronto.ca/~cks/space/blog/linux/HomeMachine2011 ]
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