Get the delta between the pixel in screen space by storing a matrix per object and the reverse matrix of the previous objects. As well as a way to go back to previous view space, so the hit position has to be transformed back to model space, then the previous world space, then view space and compared with the current view position.
Nielsbishere
commented
4 years ago
Get the delta between the pixel in screen space by storing a matrix per object and the reverse matrix of the previous objects. As well as a way to go back to previous view space, so the hit position has to be transformed back to model space, then the previous world space, then view space and compared with the current view position.