Projection Shadows

Requirements: Direct3D 11, Visual Studio 2010
Source Code: Projection Shadows

Projection shadow could be a good option when object casts shadow on a planar surface. 

References:
1. Tomas Akenine-Möller, Eric Haines, Nathaniel Hoffman. 2008. "Real-Time Rendering" pp. 333-336
2. Elmar Eisemann, Michael Schwarz, Ulf Assarsson, Michael Wimmer. 2012. "Real-Time Shadows" pp. 21-26
3. Jason Zink, Matt Pettineo, Jack Hoxley. 2011. "Practical Rendering and Computation with Direct3D 11"