glBlendColor(3G)	       OpenGL Reference		      glBlendColor(3G)

NAME    [Toc]    [Back]

     glBlendColor - set	the blend color

C SPECIFICATION    [Toc]    [Back]

     void glBlendColor(	GLclampf red,
			GLclampf green,
			GLclampf blue,
			GLclampf alpha )

PARAMETERS    [Toc]    [Back]

     red, green, blue, alpha
			   specify the components of GL_BLEND_COLOR

DESCRIPTION    [Toc]    [Back]

     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    [Toc]    [Back]

     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    [Toc]    [Back]

     GL_INVALID_OPERATION is generated if glBlendColor is executed between the
     execution of glBegin and the corresponding	execution of glEnd.

ASSOCIATED GETS    [Toc]    [Back]

     glGet with	an argument of GL_BLEND_COLOR

SEE ALSO    [Toc]    [Back]

     glBlendEquation, glBlendFunc, glGetString


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