OpenGL Billboarding Tutorial
http://www.lighthouse3d.com/opengl/billboarding/
Billboarding
http://dis.dankook.ac.kr/lectures/cg09/entry/OPENGL-Billboarding
Before Billboarding

After Billboarding

OpenGL Billboarding Tutorial
http://www.lighthouse3d.com/opengl/billboarding/
Billboarding
http://dis.dankook.ac.kr/lectures/cg09/entry/OPENGL-Billboarding
Before Billboarding