pathtracer

Implementing Peter Shirley's raytracing books.

Building

Project requires installed CMake and Conan package manager.

Run these commands from root directory:

mkdir build
cd build
conan install -s build_type=Release ..
cmake ..
cmake --build .

Progress:

"Raytracing in One Weekend"

Done.

Final result:

"Raytracing: The Next Week"

In progress.

Motion blur + BVH:

Slightly flawed method of scene generation resulted in two spheres right at the center merging together. Rendering this image with 512 samples per pixel using BVH took ~1000 seconds on my laptop's CPU (i5-4200U). Also glass spheres confuse me :|

Debug scene + scene loading from JSON:

Implemented simple scene loader from JSON description files. Now I don't have to recompile when I want to slightly modify a scene. Less compilation - more happy feelings :)

Procedural textures (start) + 3D checker pattern

3D-checker pattern works by combining two procedural textures. Right now only constant and checker textures are implemented. Scene description loader should check that texture references digraph is acyclic.

Noise + procedural texture using the noise

Implemented procedural Perlin noise and weird procedural texture.

Image textures

Implemented image textures.

Light source + Tone mapping

Implemented light sources. Because light source can be bright enough so that resulting pixel color components can reach values higher than 1.0, I had to add simple tone mapping. I wasn't satisfied with the result, so I tried another approach with desaturation.

"Raytracing: The Rest Of Your Life"

Pending.