glGetColorTableParameteriv man page on YellowDog

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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)
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