GLCOLORTABLEPARAMETERUNIX Programmer's MGLCOLORTABLEPARAMETER(3G)
NAME
glColorTableParameteriv, glColorTableParameterfv - set color
lookup table parameters
C SPECIFICATION
void glColorTableParameteriv( GLenum target,
GLenum pname,
const GLint *params )
void glColorTableParameterfv( GLenum target,
GLenum pname,
const GLfloat *params )
PARAMETERS
target The target color table. Must be GL_COLOR_TABLE,
GL_POST_CONVOLUTION_COLOR_TABLE, or
GL_POST_COLOR_MATRIX_COLOR_TABLE.
pname The symbolic name of a texture color lookup table
parameter. Must be one of GL_COLOR_TABLE_SCALE or
GL_COLOR_TABLE_BIAS.
params A pointer to an array where the values of the param-
eters are stored.
DESCRIPTION
glColorTableParameter is used to specify the scale factors
and bias terms applied to color components when they are
loaded into a color table. target indicates which color
table the scale and bias terms apply to; it must be set to
GL_COLOR_TABLE, GL_POST_CONVOLUTION_COLOR_TABLE, or
GL_POST_COLOR_MATRIX_COLOR_TABLE.
pname must be GL_COLOR_TABLE_SCALE to set the scale factors.
In this case, params points to an array of four values,
which are the scale factors for red, green, blue, and alpha,
in that order.
pname must be GL_COLOR_TABLE_BIAS to set the bias terms. In
this case, params points to an array of four values, which
are the bias terms for red, green, blue, and alpha, in that
order.
The color tables themselves are specified by calling
glColorTable.
NOTES
glColorTableParameter is available only if GL_ARB_imaging is
returned from calling glGetString with an argument of
GL_EXTENSIONS.
MirBSD #10-current Printed 2021-12-07 1
GLCOLORTABLEPARAMETERUNIX Programmer's MGLCOLORTABLEPARAMETER(3G)
ERRORS
GL_INVALID_ENUM is generated if target or pname is not an
acceptable value.
GL_INVALID_OPERATION is generated if glColorTableParameter
is executed between the execution of glBegin and the
corresponding execution of glEnd.
ASSOCIATED GETS
glGetColorTableParameter
SEE ALSO
glColorTable(3G), glPixelTransfer(3G)
MirBSD #10-current Printed 2021-12-07 2