Parameters coord Specifies a texture coordinate.
Parameters coord Specifies a texture coordinate.
Otherwise, params holds the coefficients for the texture-coordinate generation function specified by pname . Description glTexGen selects a texture-coordinate generation function or supplies coefficients for one of the functions. If M is poorly conditioned or singular, texture coordinates generated by the resulting function may be inaccurate or undefined. Note that the values in params define a reference plane in eye coordinates. The modelview matrix that is applied to them may not be the same one in effect when the polygon vertices are transformed.