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GLGETHISTOGRAMPARAMETER(3G)			   GLGETHISTOGRAMPARAMETER(3G)

NAME
       glGetHistogramParameterfv, glGetHistogramParameteriv - get histogram
       parameters

C SPECIFICATION
       void glGetHistogramParameterfv( GLenum target,
	    GLenum pname,
	    GLfloat *params )
       void glGetHistogramParameteriv( GLenum target,
	    GLenum pname,
	    GLint *params )

PARAMETERS
       target Must be one of GL_HISTOGRAM or GL_PROXY_HISTOGRAM.

       pname  The name of the parameter to be retrieved.  Must be one of
	      GL_HISTOGRAM_WIDTH, GL_HISTOGRAM_FORMAT, GL_HISTOGRAM_RED_SIZE,
	      GL_HISTOGRAM_GREEN_SIZE, GL_HISTOGRAM_BLUE_SIZE,
	      GL_HISTOGRAM_ALPHA_SIZE, GL_HISTOGRAM_LUMINANCE_SIZE, or
	      GL_HISTOGRAM_SINK.

       params Pointer to storage for the returned values.

DESCRIPTION
       glGetHistogramParameter is used to query parameter values for the
       current histogram or for a proxy.  The histogram state information may
       be queried by calling glGetHistogramParameter with a target of
       GL_HISTOGRAM (to obtain information for the current histogram table) or
       GL_PROXY_HISTOGRAM (to obtain information from the most recent proxy
       request) and one of the following values for the pname argument:

       ----------------------------------------------------------------
       Parameter		 Description
       ----------------------------------------------------------------
       GL_HISTOGRAM_WIDTH	 Histogram table width
       GL_HISTOGRAM_FORMAT	 Internal
       GL_HISTOGRAM_RED_SIZE	 Red component counter size, in bits
       GL_HISTOGRAM_GREEN_SIZE	 Green component counter size, in bits

       ------------------------------------------------------------------------
       Parameter		     Description
       ------------------------------------------------------------------------
       GL_HISTOGRAM_BLUE_SIZE	     Blue component counter size, in bits
       GL_HISTOGRAM_ALPHA_SIZE	     Alpha component counter size, in bits
       GL_HISTOGRAM_LUMINANCE_SIZE   Luminance component counter size, in bits
       GL_HISTOGRAM_SINK	     Value of the sink parameter
       ------------------------------------------------------------------------


NOTES
       glGetHistogramParameter 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 is not one of the allowable
       values.

       GL_INVALID_ENUM is generated if pname is not one of the allowable
       values.

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

SEE ALSO
       glGetHistogram(3G), glHistogram(3G)

								 March 1, 2011

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