GLBLENDCOLOR

Section: Misc. Reference Manual Pages (3G)
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NAME

glBlendColor - set the blend color

 

C SPECIFICATION

void glBlendColor( GLclampf red,

                     GLclampf green,
                     GLclampf blue,
                     GLclampf alpha )

delim $$  

PARAMETERS

red, green, blue, alpha
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(3G), glBlendFunc(3G), glGetString(3G)


 

Index

NAME
C SPECIFICATION
PARAMETERS
DESCRIPTION
NOTES
ERRORS
ASSOCIATED GETS
SEE ALSO

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