glGetColorTableParameter

GLGETCOLORTABLEPARAMETER(3G)			 GLGETCOLORTABLEPARAMETER(3G)



NAME
       glGetColorTableParameterfv,  glGetColorTableParameteriv	-  get	color
       lookup table parameters


C SPECIFICATION
       void glGetColorTableParameterfv( GLenum target,
					GLenum pname,
					GLfloat *params )
       void glGetColorTableParameteriv( GLenum target,
					GLenum pname,
					GLint *params )


PARAMETERS
       target  The   target   color   table.	Must	be    GL_COLOR_TABLE,
	       GL_POST_CONVOLUTION_COLOR_TABLE,
	       GL_POST_COLOR_MATRIX_COLOR_TABLE,	GL_PROXY_COLOR_TABLE,
	       GL_PROXY_POST_CONVOLUTION_COLOR_TABLE,
	       GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE.

       pname   The symbolic name of a color lookup table parameter.  Must  be
	       one	of     GL_COLOR_TABLE_BIAS,	GL_COLOR_TABLE_SCALE,
	       GL_COLOR_TABLE_FORMAT,			GL_COLOR_TABLE_WIDTH,
	       GL_COLOR_TABLE_RED_SIZE,		   GL_COLOR_TABLE_GREEN_SIZE,
	       GL_COLOR_TABLE_BLUE_SIZE,	   GL_COLOR_TABLE_ALPHA_SIZE,
	       GL_COLOR_TABLE_LUMINANCE_SIZE,				   or
	       GL_COLOR_TABLE_INTENSITY_SIZE.

       params  A pointer to an array where the values of the  parameter	 will
	       be stored.

DESCRIPTION
       Returns parameters specific to color table target.

       When  pname  is	set  to	 GL_COLOR_TABLE_SCALE or GL_COLOR_TABLE_BIAS,
       glGetColorTableParameter returns the color table scale or bias parame-
       ters  for  the  table  specified by target.  For these queries, target
       must be set  to	GL_COLOR_TABLE,	 GL_POST_CONVOLUTION_COLOR_TABLE,  or
       GL_POST_COLOR_MATRIX_COLOR_TABLE and params points to an array of four
       elements, which receive the scale or  bias  factors  for	 red,  green,
       blue, and alpha, in that order.

       glGetColorTableParameter	 can  also  be used to retrieve the  and size
       parameters for a color table. For these queries, set target to  either
       the color table target or the proxy color table target.	The  and size
       parameters are set by glColorTable.

       The following table  lists  the	 and  size  parameters	that  may  be
       queried.	  For  each  symbolic constant listed below for pname, params
       must point to an array of the given length,  and	 receive  the  values
       indicated.


	 -------------------------------------------------------------------
	 Parameter			 N   Meaning
	 -------------------------------------------------------------------
	 GL_COLOR_TABLE_FORMAT		 1   Internal  (e.g. GL_RGBA)
	 GL_COLOR_TABLE_WIDTH		 1   Number of elements in table
	 GL_COLOR_TABLE_RED_SIZE	 1   Size of red component, in bits
	 GL_COLOR_TABLE_GREEN_SIZE	 1   Size of green component

	 GL_COLOR_TABLE_BLUE_SIZE	 1   Size of blue component
	 GL_COLOR_TABLE_ALPHA_SIZE	 1   Size of alpha component
	 GL_COLOR_TABLE_LUMINANCE_SIZE	 1   Size of luminance component
	 GL_COLOR_TABLE_INTENSITY_SIZE	 1   Size of intensity component
	 -------------------------------------------------------------------

NOTES
       glGetColorTableParameter is present only if GL_ARB_imaging is returned
       when glGetString is called with an argument of GL_EXTENSIONS.

ERRORS
       GL_INVALID_ENUM is generated if target or pname is not  an  acceptable
       value.

       GL_INVALID_OPERATION  is generated if glGetColorTableParameter is exe-
       cuted between the execution of glBegin and the corresponding execution
       of glEnd.

SEE ALSO
       glColorTable(3G), glTexParameter(3G), glColorTableParameter(3G)



						 GLGETCOLORTABLEPARAMETER(3G)