Compounded texture mapping based on openGL standard library

At present,most of 3D design software have the function of texture mapping,which can't provide enough support for multitexture to meet customers' demand.On the premise of guaranteeing portability(not using openGL multitexture extensions),compounded texture mapping based on openGL standard library is presented.Two textures is compounded according to two texture,based on a mask image,to obtain a new texture,and is controlled by parameters setting without making novel use of texturing hardware.