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Manual Reference Pages  - GLBLENDCOLOR (3G)

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glBlendColor - set the blend color

CONTENTS

C Specification
Parameters
Description
Notes
Errors
Associated Gets
See Also

void glBlendColor( GLclampf red,

                 GLclampf green,
                 GLclampf blue,
                 GLclampf alpha )

red, green, blue, alpha	specify the components of  GL_BLEND_COLOR

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).

 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.

 GL_INVALID_OPERATION is generated if  glBlendColor is executed between the execution of  glBegin and the corresponding execution of  glEnd.

 glGet with an argument of  GL_BLEND_COLOR

 glBlendEquation(3G),  glBlendFunc(3G),  glGetString(3G)

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