by Benjamin Lipchak
WHAT YOU'LL LEARN IN THIS CHAPTER:
Functions You'll Use
Draw your scene from the light's perspective
Copy texels from the depth buffer into a depth texture
Use eye linear texture coordinate generation
Set up shadow comparison
Shadows are an important visual cue, both in reality and in rendered scenes. At a very basic level, shadows give us information about the location of objects in relation to each other and to light sources, even if the light sources are not visible in the scene. When it comes to games, shadows can make an already immersive environment downright spooky. Imagine turning the corner in a torch-lit dungeon and ...