Am 08.07.2012 10:20, schrieb Calculemus: > I need to implement compositors for a project I work on, such as > soft-light, hard-light, overlay, etc. like the ones in Photoshop. I see > gegl has all those. But they use different math than the one I see > in the original Adobe reference that is used for Photoshop and > After Effects. To make things worse, on the web you can find even > other approaches for the same operation, like soft-light for example. > Someone can shed some light on this? for a quite comprehensive comparison of many, many blend modes -- including several softlight formulas -- you might want to check out my article [1]. The big table [2] at the beginning of the article features the comparison list. In the link section there is also a site with ready-to-use C code, IIRC. best regards, yahvuu [1] http://yahvuu.wordpress.com/2009/09/27/blendmodes1/ [2] http://yahvuu.files.wordpress.com/2009/09/table-brightness-1600b.png _______________________________________________ gimp-developer-list mailing list gimp-developer-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gimp-developer-list
