GLBLENDCOLOREXT()GLBLENDCOLOREXT()NAME
glBlendColorEXT - set the blend color
C SPECIFICATION
void glBlendColorEXT( GLclampf red,
GLclampf green,
GLclampf blue,
GLclampf alpha )
delim $$
PARAMETERS
red, green, blue, alpha specify the components of GL_BLEND_COLOR_EXT
DESCRIPTION
The GL_BLEND_COLOR_EXT may be used to calculate the source and destina‐
tion blending factors. See glBlendFunc for a complete description of
the blending operations. Initially the GL_BLEND_COLOR_EXT is set to
(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_EXTEN‐
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
glBlendFunc, glGetString.
GLBLENDCOLOREXT()