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Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux	CentOS 5.6
	glGetConvolutionParameter(3gl)

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GLGETCONVOLUTIONPARAMETER

NAME
C SPECIFICATION
PARAMETERS
DESCRIPTION
ERRORS
SEE ALSO

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NAME

glGetConvolutionParameterfv, glGetConvolutionParameteriv − 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 . 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(3G), glGetSeparableFilter2D(3G), glConvolutionParameter(3G)

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glGetConvolutionParameter(3gl)