texture binding, texture generate, texture filtering, texture subimage
http://dis.dankook.ac.kr/lectures/cg07/entry/opengl-texture-mapping-예제
texture mapping by procedural definition & using imagefile, 
mipmapping, texture environment setting (modulate/decal), 
texture distorting, texture transformation, flipbook animation, etc
http://dis.dankook.ac.kr/lectures/cg07/entry/texture-mapping-예제