void Update()
{
DisplayParameters newDisplay = DisplayParameters.Collect();
UpdateView(HmdParameters.Instance, newDisplay);
_hmdParamsDirty = false;
_display = newDisplay;
}
void OnRenderImage(RenderTexture source, RenderTexture destination)
{
UpdateView(HmdParameters.Instance, DisplayParameters.Collect());
Graphics.Blit(RenderTexture, destination, EyeMaterial);
}