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  de‐
       termines which convolution filter is queried.  pnam determines which pa‐
       rameter 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  al‐
              lowable formats.

       GL_CONVOLUTION_WIDTH
              The current filter image width.

       GL_CONVOLUTION_HEIGHT
              The current filter image height.

       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)