Raytracing

A simple ray tracer with a controllable camera.

Demo

Getting Started

Dependencies

• SDL2 - window creation
• glm - math library

Installing

>>> make build

Executing program

>>> ./raytracer

Usage

• Esc - Quit
• W, A, S, D - Move forward, backward, left, right
• Space, LShift - Move up, down
• ←, → - Rotate left, right
• P - Take a screenshot (saved to out.png) and quit

Features

• Moveable camera (translation, rotation)
• Accumulation - one sample per pixel per frame, image quality improves over time
• Materials - diffuse (lambertian), metal, glass (dielectric), light source
• Geometry - spheres only
• Texture - solid colour, image texture

Todo list

• Support window resize
• Figure out why multi-threading is making code slower instead of faster
• Mouse-controlled camera rotation
• Depth of field (camera focus)
• Rectangles and cuboids
• Axis aligned bounding box (AABB)
• Object file loading
• Mist (participating media)
• Perlin noise texture
• Anti-aliasing
• ImGui to edit scene during runtime

Acknowledgments

• Ray Tracing in One Weekend
• Ray Tracing: The Next Week