Monte Carlo Path Tracer

This Monte Carlo path tracer is implemented in GLSL, with the majority of computation performed on the GPU. The renderer draws on concepts from Physically Based Rendering and casts rays per fragment from the camera through each pixel, simulating multiple light bounces.

The path tracer implements image-based environment lighting for global illumination, and different types of lights and materials/BDSFs. Multiple importance sampling as well as Next Event Estimation, in which we use direct light sampling at each intersection, help improve convergence speed and reduce noise.

Cornell Box	Cornell Box, evironment light only

Spotlight	Different BSDFs

Neon and Glass Boxes	Portals and Mirrors