Raytracer

This is a port of an simple raytracer that I wrote in c++/cuda for an university project to Rust in order to learn it.
It reads a simple scene files that let you specify very simple geometries like spheres, planes and also to import wavefront obj file. (Some examples below)
I also handled simple multithreading (with rayon) and model trasformations (that aren't present in the original implementation)

Table of contents

• raytracer
  • Table of contents
  • Getting started
  • Arguments
  • Examples
  • Future

Getting started

In order to run the game, first clone the repository and enter the folder:

git clone https://github.com/colobrodo/raytracer-rs.git
cd raytracer

Then run the Rust compiler:

cargo run

Voilà 🎉

Arguments

Simple usage:

cargo run .\scene\simple_sphere.scene -o .\img\simple_sphere.bmp -s 1

You need a scene file as first argument (mandatory). With the -o or --output option you can specify where to save the generated image.
Using --sample-rate or -s you can choose how many rays use per pixel (20 by default)

Examples

Here some of the generated images

Simple sphere

size 1200 1200

sphere (0, 0, -3.0) 1 white

plane (0, 0, 1.0) -6 white

# light sources
light (-2, 0, -3) blue
light (0, -2, -3) red
light (2, 0, -3) green
light (0, 2, -3) yellow

Standford Bunny

size 1200 1200

model "./models/bunny_lp.obj" white > scale 0.4 > translate (0, 0, -7)

# light sources
light (0, 1, -2) blue
light (0, 0, -1) green

Multiple Sphere

Future

• I plan to use octree or grids to optimize the (now very slow) mesh rendering
• If I reach reasonable time with Octree/Grid optimization, try render a video rendering each frame and then using ffmpeg