OpenGL Color Blending Constant RGB alpha Blend Factor Blend Factor GL ZERO (0.0,0) 0 GL ONE (1,1,1) GL SRC COLOR (R, G, By GL ONE MINUS SRC COLOR (1,1,1)=( R, G By1-A GL DST COLOR (Ra, Gd, Ba) A GL ONE MINUS DST COLOR (1,1,1)(GdBa GL SRC ALPHA (A, A, Ay A GL ONE MINUS SRC ALPHA (1.1,1)(AAA1-A GL DST ALPHA (Ad, Ad, Ad) GL ONE MINUS DST ALPHA (1,1,1)(A4A1-A GL CONSTANT COLOR (Re, Go be A GL_ONE_ MINUS_CONSTANT_ COLOR (1, 1, 1-(Rc, Gc, Be) 1-Ac GL CONSTANT ALPHA Ac, AJ) GL_ONE_ MINUS_ CONSTANT_ ALPHA (1, 1, I)(Ac A. Ac 1-Ac GL SRC ALPHA SATURATE (, f): fmin(A,1-Ad)I Table 6-1 Source and Destination Blending Factors (From: OpenGL programming guide, h Ed.OpenGL Color Blending 18 (From:OpenGL programmingguide,7 th Ed.)