C++, OpenGL

This project demonstrates basic implementation of the paper
Real Shading in Unreal 4
The paper outlines Epic Games' approach to physically based shading (PBS) for realistic material creation in Unreal Engine. It emphasizes energy conservation, microfacet theory, and roughness-based specular reflection, ensuring materials respond consistently to lighting.
This project demonstrates the following algorithms for material lightning as talked about in this paper.

Diffuse Irradiance

Specular(Glossy) Irradiance

We pre-compute lighting by taking samples of environment map across the set of directions within the hemisphere aligned with the input surface normal