Online Articles and Resources
            
                
                Articles from the Valve Developer Community
            
            
            Articles from Wikipedia
            
            
         
        
            Published Articles and Presentations
            
                - Efficient Self-Shadowed Radiosity Normal Mapping, Chris Green
 
                - Directional Lightmaps,
                    Peter Houska
 
                - A Planar Perspective Image Matching using Point Correspondences and Rectangle-to-Quadrilateral Mapping, Dong-Keun Kim and Byung-Tae Jang and Chi-Jung Hwang
 
                - 3D Perspective Texture Mapping of Polygons in Real Time, Michael McMahon and Steven Collins
 
                - Half-Life 2 / Valve Source Shading, Gary McTaggart, March 22, 2004
 
                - Shading in Valve's Source Engine, Jason Mitchell, SIGGRAPH 2006
 
                - In short words: 3D, Chapter 2: Texture Mapping
 
                - 6.837 Rendering Intro Presentation, MIT Open Courseware