blendc(3G)blendc(3G)NAMEblendc - specifies a constant color for blending
FORTRAN 77 SPECIFICATION
subroutine blendc(red, green, blue, alpha)
real red, green, blue, alpha
PARAMETERS
red is a floating point value between 0 and 1 (default 1.0).
green is a floating point value between 0 and 1 (default 1.0).
blue is a floating point value between 0 and 1 (default 1.0).
alpha is a floating point value between 0 and 1 (default 1.0).
DESCRIPTIONblendc specifies the color components used by blend functions
BFCA, BFCSA, BFCC and BFMCC. The blend color can be changed only by
calling blendc. Since blend color is not stored in the framebuffer, it
can be used even if the framebuffer does not include alpha bitplanes.
Red, green, blue, and alpha are clamped to the closed range 0 through 1
when blendc is called.
Red, green, blue, and alpha are 0 by default.
SEE ALSO
blendf
NOTES
IRIS-4D G, GT, GTX, VGX, and VGXT models, the Personal Iris, Indigo
Entry, Indy, XL, XS, XS24, XZ, Elan and Extreme systems do not support
blendc.
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