GLBLENDCOLOREXT(3GL)GLBLENDCOLOREXT(3GL)NAME
glBlendColorEXT - specify the blend color
C SPECIFICATION
void glBlendColorEXT( GLclampf red,
GLclampf green,
GLclampf blue,
GLclampf alpha )
PARAMETERS
red, green, blue, alpha
Specify red, green, blue, and alpha components.
DESCRIPTION
glBlendColorEXT specifies a constant color used for calculating the
source and destination blending factors.
See glBlendFunc for a complete description of the blending operations.
The four parameters are clamped to the range [0,1] before being stored.
The default value for the constant blending color is (0,0,0,0).
NOTES
glBlendColorEXT is part of the EXT_blend_color extension, not part of
the core GL command set. If GL_EXT_blend_color is included in the
string returned by glGetString, when called with argument GL_EXTENâ
SIONS, extension EXT_blend_color is supported by the connection.
ERRORS
GL_INVALID_OPERATION is generated if glBlendColorEXT is executed
between the execution of glBegin and the corresponding execution of
glEnd.
ASSOCIATED GETS
glGet with an argument of GL_BLEND_COLOR_EXT
SEE ALSO
glBlendFuncP, glBlendEquationEXT, glGetString
24 Sept 97 GLBLENDCOLOREXT(3GL)