skia: fixed DrawImage origin

src/skia/fresnel.skiarenderer.pas

@@ -677,6 +677,7 @@ begin
   if SkImage=nil then exit;
 
   r:=RectF(aLeft,aTop,aLeft+aWidth,aTop+aHeight);
+  r.Offset(FOrigin.X,FOrigin.Y);
   Canvas.DrawImageRect(SkImage,r);
 end;