FHL is (going to be) an OpenGL, coded in C++11/C++14 graphics library making easy to combine 2D and 3D elements.
The main target is 2.5D (hence the name) games and you shouldn't expect FHL to be a library for 3D apps. There's no 3D camera control nor depth testing. The last thing rendered is the thing on top.

As for now the lib offers:

• wrapped, into few classes representing 2D or 3D object, OpenGL calls
• easy texture loading using SOIL (possible change to FreeImage in the future)
• easy model loading using Assimp (fhl::Model class)
• default GLSL shaders and opportunity to write your own
• SFML-inspired interfaces (fhl::Renderable and fhl::Transformable, fhl::Transformable3D)
• lights (but note that there's no "scene", every object is or is not influenced by particular light independently)
• 4x4 matrix and vectors class representation and operations
• simple collision detection classes (fhl::Rect and fhl::OrientedRect)
• time measuring using std's <chrono> features (fhl::Clock)
• fhl::ResourceMgr class enforcing proper resource management (it's the only class allowed to create fhl::Texture and fhl::Shader objects)

In the future there's going to be optional deferred renderer that will be much more efficient in specific situations, but I have to think how to design usage of such.

This repository stores code of FHL along with simple game written using FHL. Classes which belongs to FHL are inside a fhl namespace and their files are located in Graphics, Maths and Utility directories inside /EndlessRunner/src/ directory.

It is usable, but there's only VS2015 project file provided. No CMake yet, but it will be as soon as I find time to learn CMake scripts.
There's still a lot to do and the lib is still rather unefficient.