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Raykat

Simple raytracing engine in C (WIP). Based on Ray Tracing in One Weekend by Peter Shirley.

Watch image.png for a rough estimate of what the raytracer is capable of at this moment.

Progress image

Build

Build with make:

$ make

To generate the image, run the make rule "image":

$ make image

Todo

Here is what I'm planning to to next (eventually):

  • Improve vector operations: Changed pointer params to const.
  • Fix the coordinate system: This was really as easy as changing v-up.
  • Materials: Implemented. Lacks the shared pointer capability of the original. One material can only be used by one object.
  • Const correctness: Const all the things.
  • Inline utility functions: Vec3.h now just holds static inline declarations.
  • Command line arguments: Reading resolution and other settings from argv.
  • Read geometry from file: Implemented a rudimentary obj parser. Loading objs with tons of tris slows down renders tremendously though.
  • Environment maps.
  • Threading: I have no experience with pthread.h so this ought to be fun.
  • Textures.
  • Volumes.

References