[Openicc] Color Management for compositor mutter

[Chris Murphy]

On May 5, 2011, at 6:07 AM, Kai-Uwe Behrmann wrote:

>> Wouldn't it be better to allow new applications to opt-in certain
>> window regions?
> 
> The same way you could suggest to handle pure DeviceRGB as native device colour and let 99% of innocent users stand in the rain with never ever colour corrected prints. Not my position.

Well they would not be entirely uncorrected. They can still be assumed to be sRGB and converted for print in the print path. The assumption that uncorrected RGB data displayed is also sRGB is a rather tall assumption, but it's not orders of magnitude wrong either. It's even an assumption that meaningfully better results occur when assuming untagged = sRGB as source, and an EDID based display profile as destination, and transforming everything on-the-fly. I think that's unproven. It should be true. But we really don't have a lot of data on this.

I think a first step would be to start collecting EDID data on as many machines as possible, maybe through smolt?


Chris