GLBLENDCOLOR - Online Linux Manual PageSection : 3G

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NAME"glBlendColor − set the blend color

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C SPECIFICATIONvoid glBlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )

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

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DESCRIPTIONThe ­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).

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NOTES­glBlendColor 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.

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

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ASSOCIATED GETS­glGet with an argument of ­GL_BLEND_COLOR

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SEE ALSO­glBlendEquation(3G), ­glBlendFunc(3G), ­glGetString(3G) 0

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