GEAR 2.5 is a Game Engine written in C++ and using OpenGL. It extensively takes usage of new C++11 features and uses at least OpenGL 3.0 as the lowest version. Currently it is only compileable on Windows, but further OS may follow in future as well.

Current features:

• generic extendable entity component system in a multithreaded environment
• generic event callback system
• mesh formats: fbx (animated), md5 (animated)
• forward rendering
• deferred rendering
• highly configurable multipass rendering
• shading languages: GLSL, CG
• generic ubershader format with shader permutation generation using macros
• configurable post processing pipeline
• physics support (bullet physics or newton game dynamics)
• cascaded shadow mapping for directional lights
• point light shadow mapping
• 2D Texturing support
• Render to Texture (with multiple render targets)
• Z-Sorted rendering for transparent materials
• generic extendable resource importer with multithreaded caching possibility

Project Page: http://confluence.gear2.de/display/G2/PROJECT+GEAR+2.5