On Mon, Jan 28, 2019 at 6:44 PM Doug Walker <Doug....@...> wrote:

I completely agree with this. From a UI construction point of view, and in accordance with the ISO’s additive RGB colorspace definition, is it feasible to enforce a bare minimum set of tags that might include:

1. TransferFunction

2. Chromaticity

3. AchromaticChromaticity

I ask because it is deadly tricky trying to implement OCIO v1 as a UI colour management system without some degree of clarity on certain transform classes and their undisclosed colorimetry. Being able to, for example, deduce the underlying chromaticities and separate them from both technical and aesthetic transfer functions is required for displaying UI elements correctly according to need. Attempting to do so with only a blind view transform is virtually impossible currently. 

Great work,

TJS