[argyllcms] Re: Faulty monitor?
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 25 Dec 2019 11:05:23 +1100
Vallo Kallaste wrote:
If I understand right then dispcal changes GPU CLUT not test patch
values sent to GPU? That would explain why I see those whole screen
color casts while calibration is running as changing CLUT affects the
whole not only the patch.
There are two things going on:
1) The VideoLUT is set to linear. This is something you may well see happen,
depending on what the previous calibration was set to.
2) If the VideoLUT has greater depth than the frame buffer, then for each
test patch the entry will be adjusted to output the least significant
bits. You are unlikely to be able to notice this.
Cheers,
Graeme Gill.
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