Hi, good people.
I'm working on a given picture, which is derived from DDS (DXT) format. It is a texture for a 3D game model, and comes with heavy use of transparency.
As long as I work with layers, everything is fine. But when I save the file, the result is a picture with some black markings, which aren't in the original. These black spots are visible in PAINT.NET, but only after single layers are merged or the whole bunch of layers is flattened.
The damage is more easy to spot when I activate a transparency plug-in. Now even more overall changes are visible. I made a before/after picture, hope it makes a bit more clear what my problem is. The problem isn't caused by this transparency-tool, in fact it occurred as well before I installed the plugin.
I have used different parameters for blending, like "normal", "additive", "multiply", or "overlay". But this shouldn't be important anyway, because the different layers are cut-outs of the original, so no active layer overlaps with another. The changes I have done in the layers are modified values of the "hue". Can this have any impact regarding transparency?
Any thoughts or suggestions?
Thanks for listening.