Rengine

Rengine is a cross-platform real-time rendering engine designed for game development and visualization tasks. It emphasizes modularity and embeddability, aiming to serve as both a standalone engine and a backend for other tools.

Architecturally, rengine uses a scene graph and an entity-component system to manage complex environments. It provides a physically based rendering pipeline, global illumination options, and a flexible post-processing suite. The engine supports multiple rendering backends, including Vulkan and OpenGL, with experimental DirectX 12 support, allowing deployment on modern desktops and devices. Its material system implements physically based materials, HDR lighting, tone mapping, shadows, and optional ray tracing features.

It includes a scripting interface for rapid prototyping via Lua and Python, along with a scene editor and asset pipeline that streamline content creation. A modular plugin architecture enables developers to extend rendering passes, input handling, and tooling without altering core code.

Rengine originated in the late 2010s as an open-source project maintained by a community of contributors. It is released under a permissive open-source license, encouraging integration into research, education, and commercial projects while inviting community contributions.

Adoption has been strongest among indie developers and academic visualization groups that value cross-platform support and a lightweight runtime, though its ecosystem remains smaller than that of several established engines.