GLGETCONVOLUTIONPARAMUNIX(ProgrammerGLGETCONVOLUTIONPARAMETER(3G)
glGetConvolutionParameterfv, glGetConvolutionParameteriv -
get convolution parameters
void glGetConvolutionParameterfv( GLenum target,
GLenum pname,
GLfloat *params )
void glGetConvolutionParameteriv( GLenum target,
GLenum pname,
GLint *params )
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.
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
MirOS BSD #10-current Printed 20.2.2012 1
GLGETCONVOLUTIONPARAMUNIX(ProgrammerGLGETCONVOLUTIONPARAMETER(3G)
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 . 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.
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.
glGetConvolutionFilter(3G), glGetSeparableFilter2D(3G),
glConvolutionParameter(3G)
MirOS BSD #10-current Printed 20.2.2012 2
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