C SPECIFICATION

       void GLAPIENTRY glBlendColor( GLclampf red,
                                     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)