Could tweening potentially be done in shaders?

Could tweening of position and rotation be done in shaders?

As in:

I know I can do the actual tween as in affect the position rotation etc of vertex's, normals, whatever I want.

What I don't know is, is there a limit to how far from the original position the object could go?

Trying to think of a high performance way to do tweens and affecting a shader property would be a great way. They don't need collisions when tweening.

In my mind, it is perfectly possible by getting the world space positions of everything and offsetting that based on the amount needed?

 

I wrote this already. Did a matrix transformation per needed transformation type.

 

I believe Unity talked about something along the same lines in their recent post about GPU accelerated instanced skinned meshes, which uses animation textures. They have example code your can look at as well.

https://blogs.unity3d.com/2018/04/16/animation-instancing-instancing-for-skinnedmeshrenderer/

 

It's definitely possible, altough bounding volumes are not updated...

I made a small sample animating position, rotation and scale in a shader using Textures (Curves are baked in Textures) here:
https://github.com/andydbc/unity-texture-curve

Also I wrote a custom node for Shader Graph that let you sample easing equations to make all sort of cool stuffs directly in your graph:
https://github.com/andydbc/shadergraph-custom-nodes