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GLBLENDCOLOR(3G)                                                                            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 argument.

ERRORS
       GL_INVALID_OPERATION is generated if glBlendColor is executed 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)




                                                                                            GLBLENDCOLOR(3G)