Flex Engine is my personal rendering engine which currently supports both Vulkan and OpenGL. It was started in February 2017 as a way for me to better understand how rendering engines work. You can find the entire source code on my GitHub github.com/ajweeks/FlexEngine Follow my progress on this project on my blog at ajweeks.wordpress.com/tag/flex-engine
The OpenSceneGraph is an open source high performance 3D graphics toolkit, used by application developers in fields such as visual simulation, games, virtual reality, scientific visualization and modelling.