Gles20 gltexsubimage2d gles20:gles20.glTexSubImage2D Function glTexSubImage2D:Void( target_:GLenum,level_:GLint,xoffset_:GLint,yoffset_:GLint,width_:GLsizei,height_:GLsizei,format_:GLenum,type_:GLenum,pixels_:GLvoid Ptr )#