C SPECIFICATION

       void GLAPIENTRY glGetConvolutionParameterfv( GLenum target,
                                                    GLenum pnam )
       void GLAPIENTRY glGetConvolutionParameteriv( GLenum target,
                                                    GLenum pnam )

PARAMETERS

       target  The filter whose parameters are to be retrieved.  Must  be  one
               of GL_CONVOLUTION_1D, GL_CONVOLUTION_2D, or GL_SEPARABLE_2D.

       pnam    The    parameter   to   be   retrieved.    Must   be   one   of
               GL_CONVOLUTION_BORDER_MODE,        GL_CONVOLUTION_BORDER_COLOR,
               GL_CONVOLUTION_FILTER_SCALE,        GL_CONVOLUTION_FILTER_BIAS,
               GL_CONVOLUTION_FORMAT,                    GL_CONVOLUTION_WIDTH,
               GL_CONVOLUTION_HEIGHT,       GL_MAX_CONVOLUTION_WIDTH,       or
               GL_MAX_CONVOLUTION_HEIGHT.

       _param3 Pointer to storage for the parameters to be retrieved.

DESCRIPTION

       glGetConvolutionParameter  retrieves  convolution  parameters.   target
       determines  which convolution filter is queried.  pnam determines which
       parameter is returned:

       GL_CONVOLUTION_BORDER_MODE
              The convolution border mode.  See glConvolutionParameter  for  a
              list of border modes.

       GL_CONVOLUTION_BORDER_COLOR
              The current convolution border color.  _param3 must be a pointer
              to an array of four elements, which will receive the red, green,
              blue, and alpha border colors.

       GL_CONVOLUTION_FILTER_SCALE
              The  current filter scale factors.  _param3 must be a pointer to
              an array of four elements, which will receive  the  red,  green,
              blue, and alpha filter scale factors in that order.

       GL_CONVOLUTION_FILTER_BIAS
              The  current  filter bias factors.  _param3 must be a pointer to
              an array of four elements, which will receive  the  red,  green,
              blue, and alpha filter bias terms in that order.

       GL_CONVOLUTION_FORMAT
              The   current   internal   format.   See  glConvolutionFilter1D,
              glConvolutionFilter2D,  and  glSeparableFilter2D  for  lists  of
              allowable formats.

       GL_CONVOLUTION_WIDTH

       GL_INVALID_ENUM is generated if pnam is not one of the  allowable  val-
       ues.

       GL_INVALID_ENUM is generated if target is GL_CONVOLUTION_1D and pnam is
       GL_CONVOLUTION_HEIGHT or GL_MAX_CONVOLUTION_HEIGHT.

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

SEE ALSO

       glGetConvolutionFilter, glGetSeparableFilter2D, glConvolutionParameter



                                                 GLGETCONVOLUTIONPARAMETER(3G)