Is there an easy way to get shadows in OpenGL?

Question

I recently created some landscape code and added some diffuse lighting to the scene, however, to my disappointment, there are no shadows. I looked around the web for hours looki

Answer 1

No.

The easiest way I know of involves using a pregenerated shadow texture that is overlaid onto the terrain using multitexturing. The complicated part is generating this texture, but if you don't use directional lighting, a simple "big blurry dot" is usually better than nothing.