Using nodes to select a map...

starbase1

May the sauce be with you
OK, here's what I want to do.

I want to make a texture for Mars, and have it driven by a height map - so I apply the map with white for the highest areas of Mars and Black for the lowest.

I want the lowest areas to have water, so think of a simple dark blue image. For the darkest greys I want to apply this image.
I have a green tinted map, which I want to apply to (approx) the next 20% of heights.
Above this altitude I want a conventional current map with orange tones. And for the highest 10% of altitudes I want to apply a bleached version of the map.

So in brief, I have a set of maps, and want to apply them, selecting them by the brightness of a different control map.

This way I should be able to simply adjust the point at which the maps change over, to get the exact effect I desire. It should also then be possible (for example) to lower the sea level and show the ancient Martian oceans evaporating as an animation...

Can this be done?
Any tips?

Nick
 

XswampyX

Active member
I think a gradient based off your displacement map is your best bet.

Mars_Nodes.jpg
 
Top Bottom