Title :
Rendering soft shadows with OpenGL based on planar projection method
Author :
Liu, Nan ; Pang, Mingyong
Author_Institution :
Dept. of Educ. Technol., Nanjing Normal Univ., Nanjing, China
Abstract :
Because projection shadows algorithm is easy to understand and implement, it plays an important role in the practical application of realistic computer graphics. In this paper, on the basis of OpenGL, we draw the shadows on the plane using projection shadows algorithm. In order to approximate soft-shadow effect, a number of points on the light source are sampled. For each of these point light sources, an image is rendered. Enable the GLBLEND function of OpenGL to blend images rendered from each sample point, then the average of these images is the image with soft shadows.
Keywords :
application program interfaces; rendering (computer graphics); GLBLEND function; OpenGL; planar projection method; projection shadows algorithm; realistic computer graphics; rendering soft shadows; Image color analysis; Light sources; Lighting; Receivers; Rendering (computer graphics); OpenGL; projection shadow; soft shadow;
Conference_Titel :
Network Infrastructure and Digital Content, 2010 2nd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-6851-5
DOI :
10.1109/ICNIDC.2010.5657777
