GLclampf gree )

PARAMETERS
       red, gree, _param3, _param4
                                 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, glBlendFunc, glGetString

                                                               GLBLENDCOLOR(3G)