BaseGL: ImageMixer: Clamping of values in screen and overlay. Removed comment on add/subtr saying values are clamped and that final color is mixed with original color (what is original color anyway, we have two input colors, both are original) (inviwo/inviwo-dev#1065)
BaseGL: ImageMixer: Clamping of values in screen and overlay. Removed comment on add/subtr saying values are clamped and that final color is mixed with original color (what is original color anyway, we have two input colors, both are original) (inviwo/inviwo-dev#1065)


inviwo/inviwo,Sparkier/inviwo,inviwo/inviwo,inviwo/inviwo,Sparkier/inviwo,Sparkier/inviwo,inviwo/inviwo,inviwo/inviwo,Sparkier/inviwo,Sparkier/inviwo,inviwo/inviwo