A handwritten ray tracer with clean and well-annotated C++ implementation for systematic learning toward Computer Graphics.
- Ray intersection with rectangle by Moller-Trumbore algorithm.
- Ray intersection with bounding volumes with Axis-Aligned Bounding Box (AABB).
- Acceleration with Bounding Volume Hierarchy (BVH) and Surface Area Heuristic (SAH).
- Acceleration with multiple threading.
- Whitted-Style Ray Tracing.
- Path Tracing.
- From source
# more build details see `Development`
git clone https://github.com/dadadadawjb/RayTracerHowTo.git
cd RayTracerHowTo
mkdir build
cd build
cmake ..
make
./RayTracerHowTo- From release binary
# download from https://github.com/dadadadawjb/RayTracerHowTo/releases as `RayTracerHowTo`
./RayTracerHowTo- Demo Whitted-Style Ray Tracing
- Bunny Whitted-Style Ray Tracing
- Cornell Box Path Tracing
At present, the use of RayTracerHowTo is somehow awkward.
The configurations are all set in global.hpp.
Specifically, DEMO determines whether to ray trace demo triangles and spheres or OBJ models,
BUNNY determines whether to ray trace bunny OBJ model or not,
CORNELLBOX determines whether to ray trace cornell box or not,
PATH determines whether to use path tracing or just Whitted-style ray tracing,
ACCELERATION determines whether to use BVH acceleration or not,
MULTITHREADING determines whether to use multiple threading to accelerate ray tracing or not,
SAH_ACC determines whether to use SAH acceleration or not.
Further, not all combinations of them are allowed, see global.hpp for more detailed explanation.
Every time you changed, you should compile it again.
Another thing needed to notice is that,
you need to set your path to Eigen inside CMakeLists.txt.
Also for easier experience, I do not ignore .vscode which provides C/C++ intellisense and build configuration,
you need to set your path to Eigen and OpenCV.
The skeleton is taken from GAMES101 by Lingqi Yan.