Add UIView (from xib) with transparency in SceneKit

Question

I am trying to load a UIView into SceneKit with a translucent background, but currently it just fades to white when I reduce the opacity. I have a very simple UIView layout in a .xib file that I want to load into SceneKit. While I can display the UIView in SCNMaterial, without any problems changing any text fields, images, etc. Inside the view. However, I cannot let it have transparency. If I change the alpha of the view, it just fades to white.

most of the code is below:

if let cardView = Bundle.main.loadNibNamed("OverlayCard", owner: self, options: nil)?.first as? OverlayCard {
  cardView.backgroundColor = UIColor(displayP3Red: 1.0, green: 0.4, blue: 0.9, alpha: 0.2)
  let newplane = SCNPlane()
  let newMaterial = SCNMaterial()
  cardView.alpha = 0.2
  cardView.isOpaque = false
  newMaterial.diffuse.contents = cardView
  newMaterial.blendMode = .add
  newplane.materials = [newMaterial]
  let viewNode = SCNNode(geometry: newplane)
  self.addChildNode(viewNode)
}

, , blendMode, backgroundColor 0,2 , , , , ontop of white . blendMode =.alpha, . "self" SCNNode.

- , , ? SceneKit.

!

Answer 1

diffuse.contents .

newMaterial.diffuse.contents = cardView.layer