An Algorithm of Anti-Aliasing and Real-Time Shadow Rendering Based On Shadow Maps

作者：Jun, Li; Jin Hanjun^*; Yang, Jincai; Jin, Yin; Liu, Xiaojiao

来源：Information-An International Interdisciplinary Journal, 2012, 15(9): 3727-3733.

• shadow maps
• shadow volumes
• anti-aliasing
• realism
• rendering

Aliasing problem for shadow maps, this paper presents a real-time and anti-aliasing shadow rendering algorithm based on shadow maps. This algorithm uses shadow maps based on image space render non-shadow boundary regions and then shadow volumes based on object space to deal with shadow boundary regions. In the implementation process, this paper also proposed to use NURBS curve drawing method and combine shadow boundary points to determine contour edge of the object in order to achieve clear shadow boundary. It not only solves the problem that shadow maps cause aliasing, but also quickly renders shadow in the scene. Programming experiments proved algorithm makes shadow satisfy the requirements of realism and real-time in the three-dimensional virtual scene.

• 出版日期2012-9
• 单位华中师范大学