glGetTexGen(3G)		       OpenGL Reference		       glGetTexGen(3G)



NAME
     glGetTexGendv, glGetTexGenfv, glGetTexGeniv - return texture coordinate
     generation	parameters


C SPECIFICATION
     void glGetTexGendv( GLenum	coord,
			 GLenum	pname,
			 GLdouble *params )
     void glGetTexGenfv( GLenum	coord,
			 GLenum	pname,
			 GLfloat *params )
     void glGetTexGeniv( GLenum	coord,
			 GLenum	pname,
			 GLint *params )


PARAMETERS
     coord   Specifies a texture coordinate.  Must be GL_S, GL_T, GL_R,	or
	     GL_Q.

     pname   Specifies the symbolic name of the	value(s) to be returned.  Must
	     be	either GL_TEXTURE_GEN_MODE or the name of one of the texture
	     generation	plane equations:  GL_OBJECT_PLANE or GL_EYE_PLANE.

     params  Returns the requested data.


DESCRIPTION
     glGetTexGen returns in params selected parameters of a texture coordinate
     generation	function that was specified using glTexGen.  coord names one
     of	the (s,t,r,q) texture coordinates, using the symbolic constant GL_S,
     GL_T, GL_R, or GL_Q.

     pname specifies one of three symbolic names:

     GL_TEXTURE_GEN_MODE	   params returns the single-valued texture
				   generation function,	a symbolic constant.

     GL_OBJECT_PLANE		   params returns the four plane equation
				   coefficients	that specify object linear-
				   coordinate generation.  Integer values,
				   when	requested, are mapped directly from
				   the internal	floating-point representation.

     GL_EYE_PLANE		   params returns the four plane equation
				   coefficients	that specify eye linear-
				   coordinate generation.  Integer values,
				   when	requested, are mapped directly from
				   the internal	floating-point representation.
				   The returned	values are those maintained in
				   eye coordinates.  They are not equal	to the



									Page 1






glGetTexGen(3G)		       OpenGL Reference		       glGetTexGen(3G)



				   values specified using glTexGen, unless the
				   modelview matrix was	identity at the	time
				   glTexGen was	called.

NOTES
     If	an error is generated, no change is made to the	contents of params.

ERRORS
     GL_INVALID_ENUM is	generated if coord or pname is not an accepted value.

     GL_INVALID_OPERATION is generated if glGetTexGen is executed between the
     execution of glBegin and the corresponding	execution of glEnd.


SEE ALSO
     glTexGen







































									Page 2