I have some objects in my scene I applied a height map to and activated displacement. Now I cant seem to deactivate - or reactivate - this setting on these objects, the button is greyed out. Why?
I messing with it and there is certainly something strange. Right now I the height slider is greyed out whenever there is a height map attached, see screencap.
For the original problem I can remove the height map and click on and off the displacement radio button under the object properties, but only in preview render mode. As soon as I turn to raytrace the radio button greys out. The inverse happens if I reattach a height map, in preview render mode the radio button is grey and can only be activated if raytrace render has been on.
In the attached video I have removed the height map from the material while working in preview mode. Notice that right after the displacement button is selectable until I hit Raytrace.