Hello Saul, Am 05.09.2012 20:37, schrieb Saul Goode: > This brings us to the "overlay" mode, which most graphics programs define as > using the "screen" mode when the upper layer is bright (above middle value) > and "multiply" mode when it is dark.
just a nit to pick: it is the bottom layer which determines whether to perform screening or multiplying > [..] My understanding is that GIMP implementation of "soft light" mode is > similar to Borland's graphics library in their Delphi programming environment. i presume you are referring to "Pegtop’s extensive survey of blend modes" [1]. The formula given there is exactly the GIMP implementation. As you said, softlight can be regarded as a smoothened variant of overlay mode which offers softer transitions. Mathematically, this formula describes a linear cross-fade between multiply and screen depending on the base layer value. best regards, yahvuu [1] http://www.pegtop.net/delphi/articles/blendmodes/softlight.htm _______________________________________________ gimp-developer-list mailing list gimp-developer-list@gnome.org https://mail.gnome.org/mailman/listinfo/gimp-developer-list
