Hello Clive, I cannot thank you enough for making this great contribution, I had agreed with Joachim in providing a couple of shaders that already implemented this to have an example to start working on a node that could allow us to achieve this, but I have had enormous amounts of work with very close deadlines. Joachim was very comprehensive with this feature since is a thing that can empower SF shaders with such awesome realism.

If the code that you shared is all what is needed to build the projection shader this can really help Joachim to build it and published it in the next version or so, if there is new breakthrough, like the code that you manually programmed in the shader, please share with us to count with this so usefully feature in Shader Forge.

Thank you all!