Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The blendTextureSourceAlpha property of the XRCompositionLayer interface is a boolean enabling the layer's texture alpha channel.
A boolean. true enables the alpha channel, false disables it.
The following code snippet toggles a layer to opaque and back.
myLayer.blendTextureSourceAlpha = !myLayer.blendTextureSourceAlpha;