GLBLENDCOLOR(3G) UNIX Programmer's Manual GLBLENDCOLOR(3G)
NAME
glBlendColor - set the blend color
C SPECIFICATION
void glBlendColor( GLclampf red,
GLclampf green,
GLclampf blue,
GLclampf alpha )
PARAMETERS
red, green, blue, alpha
specify the components of
GL_BLEND_COLOR
DESCRIPTION
The GL_BLEND_COLOR may be used to calculate the source and
destination blending factors. The color components are
clamped to the range [0, 1] before being stored. See
glBlendFunc for a complete description of the blending
operations. Initially the GL_BLEND_COLOR is set to (0, 0, 0,
0).
NOTES
glBlendColor is part of the GL_ARB_imaging subset.
glBlendColor is present only if GL_ARB_imaging is returned
when glGetString is called with GL_EXTENSIONS as its argu-
ment.
ERRORS
GL_INVALID_OPERATION is generated if glBlendColor is exe-
cuted between the execution of glBegin and the corresponding
execution of glEnd.
ASSOCIATED GETS
glGet with an argument of GL_BLEND_COLOR
SEE ALSO
glBlendEquation(3G), glBlendFunc(3G), glGetString(3G)
MirBSD #10-current Printed 2021-12-07 1