I'm trying to making a photo filter app for the first time. Most of photo filter apps has a slider to control intensity of filters they provide. I know how to change intensity with inputIntensity parameter...like this..
filter.setValue(intensity, forKey:"inputIntensity")
For example, CIColorMonocrome take inputIntensity parameter but most of color adjustment filters on Core Image Filter Reference page doesn't have inputIntensity parameter.. In that case, how to control intensity of filter effect I want to create??
Especially if I combine multiple effects and let users control intensity of the filter combined multiple color correction...?
Any pointer will be welcomed...!