GLBLENDCOLOR(3G) |  | GLBLENDCOLOR(3G)

# 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)