glgethistogramparameterext()



glGetHistogramParameterEXT(3G)                                OpenGL Reference



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 GLHISTOGRAMEXT or GLPROXYHISTOGRAMEXT.

     pname   The name of the parameter to be retrieved.  Must be one of
             GLHISTOGRAMWIDTHEXT, GLHISTOGRAMFORMATEXT,
             GLHISTOGRAMREDSIZEEXT, GLHISTOGRAMGREENSIZEEXT,
             GLHISTOGRAMBLUESIZEEXT, GLHISTOGRAMALPHASIZEEXT,
             GLHISTOGRAMLUMINANCESIZEEXT, or GLHISTOGRAMSINKEXT.

     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
     GLINVALIDENUM is generated if target is not one of the allowable
     values.

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

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


SEE ALSO
     glHistogramEXT












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