The paper discusses the creation of rendering systems for airborne civil aviation systems. All software used on board must comply with internationally accepted safety standards. This imposes additional requirements on both the hardware used and the system development process. This work is devoted to the specifics of using multi-core processors in aviation embedded systems to improve the performance of software implementation of the OpenGL SC library. The possibility of using multi-core processors in safety-critical systems is provided by the Russian real-time operating system JetOS. Implementation of multi-window rendering using the software OpenGL SC library is also considered.