glGetTexParameterfv, glGetTexParameteriv - return texture
parameter values

glGetTexParameterfv
	glGetTexParameterfv(target, pname) -> params
glGetTexParameteriv
	glGetTexParameteriv(target, pname) -> params

void glGetTexParameterfv( GLenum target,
                          GLenum pname,
                          GLfloat *params )
void glGetTexParameteriv( GLenum target,
                          GLenum pname,
                          GLint *params )

target  Specifies the	symbolic name of the target texture.
        GL_TEXTURE_1D	and GL_TEXTURE_2D are accepted.

pname	  Specifies the	symbolic name of a texture parameter.
        GL_TEXTURE_MAG_FILTER, GL_TEXTURE_MIN_FILTER,
        GL_TEXTURE_WRAP_S, GL_TEXTURE_WRAP_T,
        GL_TEXTURE_BORDER_COLOR, GL_TEXTURE_PRIORITY,	and
        GL_TEXTURE_RESIDENT are accepted.

params  Returns the texture parameters.

glGetTexParameter returns in params the value	or values of
the texture parameter	specified as pname.  target defines
the target texture, either GL_TEXTURE_1D or GL_TEXTURE_2D,
to specify one- or two-dimensional texturing.	 pname accepts
the same symbols as glTexParameter, with the same
interpretations:

GL_TEXTURE_MAG_FILTER		     Returns the single-valued
                                   texture magnification
                                   filter, a symbolic
                                   constant. The initial
                                   value is GL_LINEAR.

GL_TEXTURE_MIN_FILTER		     Returns the single-valued
                                   texture minification
                                   filter, a symbolic
                                   constant. The initial
                                   value is
                                   GL_NEAREST_MIPMAP_LINEAR.

GL_TEXTURE_WRAP_S		     Returns the single-valued
                                   wrapping function for
                                   texture coordinate	s, a
                                   symbolic constant.	The
                                   initial value is
                                   GL_REPEAT.

GL_TEXTURE_WRAP_T		     Returns the single-valued
                                   wrapping function for
                                   texture coordinate	t, a
                                   symbolic constant.	The
                                   initial value is
                                   GL_REPEAT.

GL_TEXTURE_BORDER_COLOR	     Returns four integer or
                                   floating-point numbers
                                   that comprise the RGBA
                                   color of the texture
                                   border.  Floating-point
                                   values are	returned in
                                   the range [0, 1].
                                   Integer values are
                                   returned as a linear
                                   mapping of	the internal
                                   floating-point
                                   representation such that
                                   1.0 maps to the most
                                   positive representable
                                   integer and -1.0 maps to
                                   the most negative
                                   representable integer.
                                   The initial value is (0,
                                   0,	0, 0).

GL_TEXTURE_PRIORITY		     Returns the residence
                                   priority of the target
                                   texture (or the named
                                   texture bound to it). The
                                   initial value is 1. See
                                   glPrioritizeTextures.

GL_TEXTURE_RESIDENT		     Returns the residence
                                   status of the target
                                   texture.  If the value
                                   returned in params	is
                                   GL_TRUE, the texture is
                                   resident in texture
                                   memory.  See
                                   glAreTexturesResident.

GL_TEXTURE_PRIORITY and GL_TEXTURE_RESIDENT are only
available if the GL version is 1.1 or	greater.

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

GL_INVALID_ENUM is generated if target or pname is not an
accepted value.

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

glAreTexturesResident, glPrioritizeTextures, glTexParameter