glGetHistogramParameterEXT(3G)

NAME
     glGetHistogramParameterfvEXT, glGetHistogramParameterivEXT - get
     histogram parameters


C SPECIFICATION
     void glGetHistogramParameterfvEXT( GLenum target,
                                        GLenum pname,
                                        GLfloat *params )
     void glGetHistogramParameterivEXT( GLenum target,
                                        GLenum pname,
                                        GLint *params )


PARAMETERS
     target  Must be one of GL_HISTOGRAM_EXT or GL_PROXY_HISTOGRAM_EXT.

     pname   The name of the parameter to be retrieved.  Must be one of
             GL_HISTOGRAM_WIDTH_EXT, GL_HISTOGRAM_FORMAT_EXT,
             GL_HISTOGRAM_RED_SIZE_EXT, GL_HISTOGRAM_GREEN_SIZE_EXT,
             GL_HISTOGRAM_BLUE_SIZE_EXT, GL_HISTOGRAM_ALPHA_SIZE_EXT,
             GL_HISTOGRAM_LUMINANCE_SIZE_EXT, or GL_HISTOGRAM_SINK_EXT.

     params  Pointer to storage for the returned values.

DESCRIPTION
     glGetHistogramParameterEXT is used to query parameter values for the
     current histogram or for a proxy.  For a detailed description of the
     parameters, see glHistogramEXT.

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 glGetHistogramParameterEXT is
     executed between the execution of glBegin and the corresponding execution
     of glEnd.


SEE ALSO
     glHistogramEXT