glBlendColorEXT

NAME

glBlendColorEXT - set the blend color

C SPECIFICATION

void glBlendColorEXT(GLclampf red,
                     GLclampf green,
                     GLclampf blue,
                     GLclampf alpha)

PARAMETERS

red	Specifies the red component for constant blending.
green	Specifies the green component for constant blending.
blue	Specifies the blue component for constant blending.
alpha	Specifies the alpha component for constant blending.

DESCRIPTION

glBlendColorEXT sets the constant color for the source and destination blend factors. (See glBlendFunc.) The four color components are clamped to range [0,1] before being stored. The initial value for the constant blend color is (0,0,0,0).

EXTENSIONS

The following functions and/or constants are part of an extension, not part of the core GL command set. The extension name must be present in the string returned by glGetString when called with argument GL_EXTENSIONS.

GL_EXT_blend_color: glBlendColorEXT is part of the EXT_blend_color extension.

ERRORS

GL_INVALID_OPERATION is generated if glBlendColorEXT is executed between the execution of glEnd.

ASSOCIATED GETS

glGet with an argument of GL_BLEND_COLOR_EXT