An implementation of The Ray Tracer Challenge by Jamis Buck, written in C++11 with a simple GTK3 UI. A "from scratch" implementation, it uses no special graphics or math libraries. Its only dependencies are GTK3, gtkmm, yaml-cpp and googletest.
Some of its features:
- Displays the render in progress
- Multithreaded
- All primitive shapes: Sphere, Cube, Plane, Cylinder, Cone
- Support for triangle meshes in OBJ format with surface normals
- Groups and Constructive Solid Geometry (CSG)
- Bounding boxes and a Bounding Volume Hierarchy (BVH) optimization for high polygon scenes
- Focal blur and antialiasing (supersampling)
- Patterns, including nested patterns
- Texture mapping on primitive shapes
- Area lights and soft shadows
While performance was not a major priority in this implementation, it does do pretty well at higher compiler optimization levels. Further improvements are planned.
- Obtain dependencies
You'll need CMake and the gtkmm libraries. This depends on your distribution.
On Debian/Ubuntu:sudo apt install libgtkmm-3.0-dev cmake - Clone the repo and pull the submodules
git clone https://github.com/jpunzel/jray.git
cd jray
git submodule update --init --recursive
- Create the build directory and run cmake
# (in jray dir)
mkdir build
cd build
cmake ..
- Compile!
make -j4
TODO:
- Implement MTL parsing for texturing triangle meshes
- Implement bump mapping
- Fix numerous problems in the YAML scene file parser (likely needs a full rewrite)
- Optimization: Don't parse the same obj file multiple times (implement deep copy of Group object hierarchy)
- Performance: re-evaluate use of std::multiset for storing ray intersection lists
- Performance: re-evaluate use of std::shared_ptr
- Performance: Optimize matrix multiplication routines for SSE/AVX