type rsc.io/qr/coding.PixelRole

6 uses

	rsc.io/qr/coding (current package)
		qr.go#L235: func (r PixelRole) Pixel() Pixel {
		qr.go#L239: func (p Pixel) Role() PixelRole {
		qr.go#L240: 	return PixelRole(p>>2) & 15
		qr.go#L256: type PixelRole uint32
		qr.go#L259: 	_         PixelRole = iota
		qr.go#L284: func (r PixelRole) String() string {