Find content
Not Telling
thanks for the help , finally figured it out and it was a very stupid mistake, project was originally dx10
when i ran it in debug layer mode , and checked exactloy what was happening , in my post processsing stage , it said there was a mismatch will vertex and hull shader , which not make sence cause im not setting the hull shader aprt from the models which tesselate.
that makes sense until i realised im not resetting the hull shader to NULL.
that was the problem , cheers