current Texture
Returns the name of the OpenGL texture 2D object currently bound to the specified multitexture unit.
Return
the currently bound texture 2D object, or 0 if no texture object is bound
Parameters
texture Unit
the multitexture unit, one of GL_TEXTUREi, where i ranges from 0 to 32.
Returns the name of the OpenGL texture 2D object currently bound to the active multitexture unit. The active multitexture unit may be determined by calling currentTextureUnit.