glGetTexParameterfv man page on YellowDog

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GLGETTEXPARAMETER(3G)					 GLGETTEXPARAMETER(3G)

NAME
       glGetTexParameterfv,  glGetTexParameteriv  -  return  texture parameter
       values

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

PARAMETERS
       target  Specifies  the	symbolic   name	  of   the   target   texture.
	       GL_TEXTURE_1D,GL_TEXTURE_2D, and GL_TEXTURE_3D  are accepted.

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

       params  Returns the texture parameters.

DESCRIPTION
       glGetTexParameter returns in params the value or values of the  texture
       parameter  specified  as	 pname.	  target  defines  the target texture,
       either GL_TEXTURE_1D, GL_TEXTURE_2D, or GL_TEXTURE_3D to specify	 one-,
       two-,  or  three-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 con‐
					  stant.    The	  initial   value   is
					  GL_NEAREST_MIPMAP_LINEAR.

       GL_TEXTURE_MIN_LOD		  Returns  the	single-valued  texture
					  minimum  level-of-detail value.  The
					  initial value is −1000.

       GL_TEXTURE_MAX_LOD		  Returns  the	single-valued  texture
					  maximum  level-of-detail  value. The
					  initial value is 1000.

       GL_TEXTURE_BASE_LEVEL		  Returns the single-valued base  tex‐
					  ture	 mipmap	 level.	  The  initial
					  value is 0.

       GL_TEXTURE_MAX_LEVEL		  Returns  the	single-valued  maximum
					  texture  mipmap  array  level.   The
					  initial value is 1000.

       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_WRAP_R		  Returns the  single-valued  wrapping
					  function for texture coordinate r, 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.	Float‐
					  ing-point values are returned in the
					  range	 [0,  1].   Integer values are
					  returned as a linear mapping of  the
					  internal  floating-point representa‐
					  tion such that 1.0 maps to the  most
					  positive  representable  integer and
					  -1.0 maps to the most negative  rep‐
					  resentable   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 mem‐
					  ory.	See glAreTexturesResident.

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

       GL_TEXTURE_3D,	       GL_TEXTURE_MIN_LOD,	   GL_TEXTURE_MAX_LOD,
       GL_TEXTURE_BASE_LEVEL, GL_TEXTURE_MAX_LEVEL, and GL_TEXTURE_WRAP_R  are
       available only if the GL version is 1.2 or greater.

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

ERRORS
       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.

SEE ALSO
       glAreTexturesResident(3G), glPrioritizeTextures(3G), glTexParameter(3G)

							 GLGETTEXPARAMETER(3G)
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