void OnRenderObject()
{
// The overlay must be specified every eye frame, because it is positioned relative to the
// current head location. If frames are dropped, it will be time warped appropriately,
// just like the eye buffers.
if (currentOverlayType == OverlayType.None)
{
GetComponent <Renderer>().enabled = true; // use normal renderer
return;
}
bool overlay = (currentOverlayType == OverlayType.Overlay);
Transform camPose = Camera.current.transform;
Matrix4x4 modelToCamera = camPose.worldToLocalMatrix * transform.localToWorldMatrix;
Vector3 headPos = VR.InputTracking.GetLocalPosition(VR.VRNode.Head);
Quaternion headOrt = VR.InputTracking.GetLocalRotation(VR.VRNode.Head);
Matrix4x4 cameraToStart = Matrix4x4.TRS(headPos, headOrt, Vector3.one);
Matrix4x4 modelToStart = cameraToStart * modelToCamera;
OVRPose pose;
pose.position = modelToStart.GetColumn(3);
pose.orientation = Quaternion.LookRotation(modelToStart.GetColumn(2), modelToStart.GetColumn(1));
// Convert left-handed to right-handed.
pose.position.z = -pose.position.z;
pose.orientation.w = -pose.orientation.w;
Vector3 scale = transform.lossyScale;
for (int i = 0; i < 3; ++i)
{
scale[i] /= Camera.current.transform.lossyScale[i];
}
OVRPlugin.Bool result = OVRPlugin.SetOverlayQuad(overlay.ToBool(), texId, IntPtr.Zero, pose.ToPosef(), scale.ToVector3f());
GetComponent <Renderer>().enabled = (result == OVRPlugin.Bool.False); // render with the overlay plane instead of the normal renderer
}
public static extern void SetSpaceWarp(OVRPlugin.Bool on);
