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glBlendColor - set the blend color

C Specification

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

eqn not supported


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


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).


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.


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)

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