GLCOLORTABLEPARAMETER - Online Linux Manual PageSection : 3G

NAME"glColorTableParameteriv, glColorTableParameterfv − set color lookup table parameters

C SPECIFICATIONvoid glColorTableParameteriv( GLenum target, GLenum pname, const GLint *params )void glColorTableParameterfv( GLenum target, GLenum pname, const GLfloat *params )

PARAMETERStarget  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 parameters are stored.

DESCRIPTION­glColorTableParameter 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.

NOTES­glColorTableParameter is available only if ­GL_ARB_imaging is returned from calling ­glGetString with an argument of ­GL_EXTENSIONS.

ERRORS­GL_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 GETS­glGetColorTableParameter

SEE ALSO­glColorTable(3G), ­glPixelTransfer(3G)
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