- set the blend color
C SPECIFICATION
PARAMETERS
_param1, _param2, _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 argu-
ment.
ERRORS
GL_INVALID_OPERATION is generated if glBlendColor is exe-
cuted between the execution of glBegin and the correspond-
ing execution of glEnd.
ASSOCIATED GETS
glGet with an argument of GL_BLEND_COLOR
SEE ALSO
glBlendEquation, glBlendFunc, glGetString
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