Definition
WebXR Layers API Level 1 defines XRProjectionLayerInit
dictionary XRProjectionLayerInit {
XRTextureType textureType = "texture";
GLenum colorFormat = 0x1908; // RGBA
GLenum depthFormat = 0x1902; // DEPTH_COMPONENT
double scaleFactor = 1.0;
boolean clearOnAccess = true;
};