dualword / lagengine

C++11 real-time rendering engine with an object-oriented architecture.

LagEngine

This project exists as a learning experience about the implementation and design decisions of a 3D rendering engine. It’s also a project to keep my C++ skills on check.

While it tries to expose a friendly programming interface it is not meant to have a GUI or an editor (at least for now).

It includes a demo where an AI plays a version of Pong on a stylized scene.

Demo video: https://youtu.be/miMLTeraOLc

Current features:

• Forward rendering based on Blinn-Phong lighting, supporting directional and point lights.
• Supports meshes (loaded with Assimp library), XML material definition defining textures and shaders.
• Support render targets and various render passes. (WIP)
• Interface-based renderer to allow multiple Graphics API to be implemented. Currently has a OpenGL 4.5 implementation.
• Renderer based on a render-queue approach, iterating through all RenderTargets and through each of their Viewports to gather the Renderables. (Culling and queue sorting to be implemented)
• SceneManager containing the various scene representations, each with its own purpose (object hierarchy, culling, fast iteration).
• SceneGraph based on a hierarchy of SceneNodes. SceneNodes have a 3D space transformation relative to their parent.
• SceneObjects can be attached to SceneNodes and inherit their properties. (Example SceneObjects: Lights, MeshEntities, Cameras)
• XML based ResourceManager for assets like meshes, image textures, shader code.
• Hot reloading of file Resources (images, shaders, materials).

License

Licensed under the MIT license, see LICENSE for details.