(PROJECT) Modify Program 12.3 to utilize a height map of your own design (you could use the one you built previously in Exercise XXXXXXXXXXThen add lighting and shadow-mapping so that your tessellated...

(you could use the one you built previously in Exercise 10.2). Then add lighting and shadow-mapping so that your tessellated terrain casts shadows. This is a complex exercise, because some of the code in the first and second shadow-mapping passes will need to be moved to the evaluation shader.