It is about time to release our Perspective correct QCplugin, known as Homography.
It will allow you QClovers to corner pin a quad in a perspective-correct manner.
Useful for video mapping projects. I’ve been abusing it in the past year.
The plug is just transforming the openGL matrix, so it should be rather light on your GPU.
Download from the box on the right side of this site. Enjoy.