On 06/29/2009 10:31 AM, Emil Assarsson wrote:
> I meant the modes that are used to mix colors with layers and brush
> like Normal, Dissolve, Multiply, Divide etc...

Currently, the Color layer mode when using GEGL is supposed to use the 
Hue and Saturation of the upper layer and the Lightness from the lower 
layer. Maybe the RGB -> HSL conversion is buggy? We want Color to behave 
correctly in GIMP 2.8 when using GEGL for the projection, see 
http://bugzilla.gnome.org/show_bug.cgi?id=325564 . It is great that you 
want to look at this, and all you have to do is experiment with 
different algorithms in 
gimp_operation_point_layer_mode_get_new_color_hsl() in 

Good luck!

Best regards,

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