Definition
WebXR Layers API Level 1 defines XRCompositionLayer
[Exposed=Window] interface XRCompositionLayer : XRLayer {
readonly attribute XRLayerLayout layout;
attribute boolean blendTextureSourceAlpha;
attribute boolean forceMonoPresentation;
attribute float opacity;
readonly attribute unsigned long mipLevels;
attribute XRLayerQuality quality;
readonly attribute boolean needsRedraw;
undefined destroy();
};