Quiero mostrar el aspecto en relieve en 3D como se muestra en la siguiente imagen. Utilicé EmbossMaskFilter pero no consigo que muestre el efecto (vea el código a continuación). ¿Hay una manera diferente de hacer esto? o cómo puedo usar EmbossMaskFilter para esto.

Salida requerida

Mi salida

Path path2 = new Path();
public Paint fillPaint = null;
// called in constructor
public void createPath()
{
    //path 2 Big one
    araay = new Point[]{new Point(144,320),new Point(109,200), new Point(171,308),new Point(178,240),new Point(171,172),new Point(109,282),new Point(144,160)};
    AddBeziers(path2, araay, 320, 144);
    AddLine(path2, 216, 144 );
    AddLine(path2, 216, 216 );
    AddLine(path2, 144, 320);

     MaskFilter mEmboss = new EmbossMaskFilter(new float[] { 1, 1, 1 }, 0.4f, 6,   3.5f);
    fillPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    fillPaint.setColor(Color.WHITE);
    fillPaint.setFlags(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
    fillPaint.setAntiAlias(true);
    fillPaint.setDither(true);
    fillPaint.setStrokeJoin(Paint.Join.ROUND);
    fillPaint.setStrokeCap(Paint.Cap.ROUND);
    fillPaint.setStyle(Paint.Style.FILL);
    paint.setMaskFilter(mEmboss);   
}

 // add lines to the path
protected Path AddLine(Path path, int endX, int endY) {
    //path.moveTo(startX, startY);

    path.lineTo(endX, endY);
    return path;
}

// add curves to the path
protected Path AddBeziers(Path path, Point[] points, int lastX, int lastY) {

    if (points[0].X != lastX && points[0].Y != lastY)
        path.moveTo(points[0].X, points[0].Y);

    int index = 1;

    path.cubicTo(points[index].X, points[index].Y, points[index + 1].X,
        points[index + 1].Y, points[index + 2].X, points[index + 2].Y);
    index = index + 3;
    path.cubicTo(points[index].X, points[index].Y, points[index + 1].X,
        points[index + 1].Y, points[index + 2].X, points[index + 2].Y);

    return path;
}

//draw on canvas
@Override
public void onDraw(Canvas canvas) {

    canvas.drawPath(path2, fillPaint);
    super.onDraw(canvas);
}