9 Downloadable computer graphics software systems and computer hardware for real-time ray tracing, image rendering, image manipulation and graphics processing, for displaying photo-realistic images in virtual reality (VR), augmented reality (AR) and VR/AR display environments, supported on gaming, simulation, design, data-visualization, modeling and human-machine-interface (HMI) applications, running on desktop computers, workstations, and mobile computing hardware such as laptop computers, tablet computers and mobile phones; downloadable computer graphics software development tools, including downloadable software development kits (SDKs), downloadable application programming interfaces (APIs), and downloadable software products, namely, software plug-ins and software frameworks, for real-time ray tracing, image rendering, image manipulation and graphics processing, for displaying photo-realistic images in virtual reality (VR), augmented reality (AR) and VR/AR display environments, supported on gaming, simulation, design, data-visualization, modeling and human-machine-interface (HMI) applications, running on desktop computers, workstations, and mobile computing hardware such as laptop computers, tablet computers and mobile phones