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Man Pages


Manual Reference Pages  -  GLBLENDCOLOREXT (3)

NAME

glBlendColorEXT - set the blend color

CONTENTS

C Specification
Parameters
Description
Notes
Errors
Associated Gets
See Also

C SPECIFICATION

void glBlendColorEXT( GLclampf red,

                    GLclampf green,
                    GLclampf blue,
                    GLclampf alpha )

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 destination 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_EXTENSIONS, 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.
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