Another one (sorry).
There are cases when a texture overlay transports information which is needed in conjunction wich the underlaying texture. So a UI slider control that changes the transparency of that overlay from 0% to 100% could be very helpfull.
maxim
Feature Request: Overlay transparency control
That would be another request (I think I've already read of a similar one !?)
What I had in mind, was more related to informal textures - color coded, shade coded or similar.
You can think of cases for geological coloring, or crust partitioning, maybe possible landing corridors like the one for MER-A and MER-B, mapping status - the area already mapped by mars express. There are other posibilities.
In all cases it would be nice to see the underlaying texture as well as the overlaying one. You can pack this two together into one, or you can set the overlaying textuture to a fixed transparency (i.e. 50%). But different colors/shadings/lighting conditions may let this work better or bader in different regions of the texture. So it could be convenient to alter the transparency level according to the region you're looking onto.
maxim
(You could also use this for an 'aaah`-effect in scripts - fading away a thick atmosphere layer - you know, the audience loves those things )
What I had in mind, was more related to informal textures - color coded, shade coded or similar.
You can think of cases for geological coloring, or crust partitioning, maybe possible landing corridors like the one for MER-A and MER-B, mapping status - the area already mapped by mars express. There are other posibilities.
In all cases it would be nice to see the underlaying texture as well as the overlaying one. You can pack this two together into one, or you can set the overlaying textuture to a fixed transparency (i.e. 50%). But different colors/shadings/lighting conditions may let this work better or bader in different regions of the texture. So it could be convenient to alter the transparency level according to the region you're looking onto.
maxim
(You could also use this for an 'aaah`-effect in scripts - fading away a thick atmosphere layer - you know, the audience loves those things )