Shadow maps and projective texturing in X3D

We propose a number of X3D extensions to enable shadows in the virtual worlds. Our higher-level extensions are an easy way to request shadows independently of their implementation. Lower-level extensions allow to control the details of shadow maps generation and projective texture mapping. Together, they allow the authors to activate real-time dynamic shadows on 3D scenes. The extensions expose also projective texture mapping for purposes other than shadows, for example we can cast a color texture from a light source. Introduced concepts map naturally to any basic shadow maps implementation, and integrate nicely with existing X3D components like textures and shaders. CR Categories: I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism—Color, shading, shadowing, and texture; I.3.6 [Computer Graphics]: Methodology and Techniques— Languages, Standards

• Type: Conference
• Year: 2010
• Where: VRML
• Authors: Michalis Kamburelis
• Keywords: Internet Technology, Projective Texture Mapping, Real-time Dynamic Shadows, Shadow Maps, VRML 2010