On Wed, 2010-05-05 at 10:52 -0700, Carl Worth wrote: > I'm going through the past couple weeks of traffic on the list looking > for patches that haven't gotten picked up yet. > > So I'd love to review one like this, but it would be easier if the > commit message pointed me to something specific I could look at to see > the difference. > > So, do you have a little bit more in the way of details to help out > someone as clueless as me?
I noticed this with: http://ajax.fedorapeople.org/YellowFlower.jpg set as my desktop background in Gnome on a 1280x800 machine (in particular, a Sony Vaio VPCB1 with 6-bit panel and a rather bright black level). Easiest way to test this is by poking at PIPEACONF with intel_reg_write directly: % sudo intel_reg_write 0x70008 0xc0000040 # no dither % sudo intel_reg_write 0x70008 0xc0000050 # spatial % sudo intel_reg_write 0x70008 0xc0000054 # ST I notice it especially strongly in the relatively flat dark area in the top left. Closer than about 18" I can see a noticeable checkerboard pattern with plain spatial dithering. ST smooths that out; I can still tell that it's lacking color precision, but it's not offensive. - ajax
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