title: Exempt shadow from screen blending
body: <p>Trying to use a View.shadow(...) function in SwiftUI to create a glow effect around an object in concert with the View.blend(.screen). </p>
  
  <p>When I layer the objects without the shadow, they are the proper colors and blend properly:</p>
  
  <p><a href="https://i.stack.imgur.com/geZdA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/geZdA.png" alt="Desired colors"></a></p>
  
  <p>When I add the shadow, each object's shadow seems to blend with the object itself, shifting the colors:</p>
  
  <p><a href="https://i.stack.imgur.com/h7d37.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/h7d37.png" alt="Shadow blended colors"></a></p>
  
  <p>Is there any way to have the shadow not blend with it's associated object?</p>
  
  <p>Code snippit:</p>
  
  <pre><code>Path(path1)
      .foregroundColor(Color(color1))
      .shadow(color: Color(color1), radius: 5, x: 0, y: 0)
      .blendMode(.screen)
  Path(path2)
      .foregroundColor(Color(color2))
      .shadow(color: Color(color2), radius: 5, x: 0, y: 0)
      .blendMode(.screen)
  </code></pre>