Function hasAlpha

include/cinder/Surface.h:67–67

	uint8_t		getBlueOffset() const { return mBlue; }
	uint8_t		getAlphaOffset() const { return mAlpha; }
	bool		hasAlpha() const { return ( mAlpha != INVALID ) ? true : false; }
	uint8_t		getPixelInc() const { return mPixelInc; }
	int			getCode() const { return mCode; }