raytracing-in-one-weekend

A C++ implementation of Peter Shirley's (et al.) fantastic book series "Ray tracing in one weekend", which can be found here. Mostly for private/educational use.

Running the program

Use ./compiled_renderer.o | pnmtopng > output.png to get a png output, choose the scene by modifying scene_to_render in main.cpp.

Example scenes

The final scene of "Raytracing, the next week", rendered with 10k spp and 1920x1920 px:

The final scene of "Raytracing in a weekend", rendered in 1920x1080px, with a HDR skymap:

Features not included in RIOW

• OpenMP is used for parallel rendering, see Ǹ_THREADS, make sure to compile with -fopenmp.
• Triangles as a primitive, including normal interpolation.
• .obj file import (preliminary .mtl support too)
• HDR environment maps, with importance sampling.

More features I want to explore

• CUDA acceleration, with or w/o OptiX, very cool.
• Add more hittable primitives: (done!) triangles (and meshes), linear transformations, wireframes (long cylinders?), ray marched SDFs (thus fractals!)
• Loading objects from simple formats like (geometry version done, materials need testing) .obj
• Add BRDF support/more of them. Disney's uber-material BRDF?
• Integrate with my old CUDA-based 2d fluid simulator, ray-march and render!
• Metropolis/path space methods
• Bidirectional path tracing
• HDRi skyboxes (done)