Is stress mapping still a thing in Blender? I can only find very minimal documentation concerning it at all and definitely nothing within the last couple of years.
If it’s not available, is there something similar? I’m looking in to a technique I saw someone use in LightWave that involved using how much the original geometry of a mesh is stretched or contracted from it’s original position to filter textures for facial skin wrinkles.
Essentially, if a certain group of vertices is stretched beyond what they were originally it would affect the transparency of a displacement map. Eyebrow bone raised = top of forehead contracted = displacement map of forehead wrinkles made more visible.
One of the few examples of uses for Blender stress mapping I can find is to make a material that is stretched more transparent like rubber. I think this might be usable for what I have in mind. Possibly it could be inverted or something along those lines.
But, before I can even start trying to find a way to work with any of this, I have to actually find the stress mapping inside Blender.