glGetConvolutionParameter man page on Oracle

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GLGETCONVOLUTIONPARA(3G)	 OpenGL Manual	      GLGETCONVOLUTIONPARA(3G)

NAME
       glGetConvolutionParameter - get convolution parameters

C SPECIFICATION
       void glGetConvolutionParameterfv(GLenum target, GLenum pname,
					GLfloat * params);

       void glGetConvolutionParameteriv(GLenum target, GLenum pname,
					GLint * params);

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

       pname
	   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.

       params
	   Pointer to storage for the parameters to be retrieved.

DESCRIPTION
       glGetConvolutionParameter retrieves convolution parameters.  target
       determines which convolution filter is queried.	pname 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.  params 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.  params 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.  params 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

	   The current filter image width.

       GL_CONVOLUTION_HEIGHT

	   The current filter image height.

       GL_MAX_CONVOLUTION_WIDTH

	   The maximum acceptable filter image width.

       GL_MAX_CONVOLUTION_HEIGHT

	   The maximum acceptable filter image height.

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_ENUM is generated if target is GL_CONVOLUTION_1D and pname
       is GL_CONVOLUTION_HEIGHT or GL_MAX_CONVOLUTION_HEIGHT.

       GL_INVALID_OPERATION is generated if glGetConvolutionParameter is
       executed between the execution of glBegin() and the corresponding
       execution of glEnd().

SEE ALSO
       glGetConvolutionFilter(), glGetSeparableFilter(),
       glConvolutionParameter()

COPYRIGHT
       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
       under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS
       opengl.org

opengl.org			  04/29/2014	      GLGETCONVOLUTIONPARA(3G)
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