SORT, short for Simple Open-source Ray Tracing, is my personal cross platform ray tracing renderer. It is a standalone ray tracing program, while works well in Blender as a renderer plugin. Simliar to other open source ray tracer, like PBRT, luxrenderer, SORT is also a physically based renderer. However, since it is a solo project that I worked on in my spare time, it is way simpler comparing with its peers.

Here are the features implemented so far:

• Integrator. (Whitted ray tracing, direct lighting, path tracing, light tracing, bidirectional path tracing, instant radiosity, ambient occlusion)
• Spatial acceleration structure. (KD-Tree, BVH, Uniform grid, OcTree)
• Sampler. (Regular, random, stratified)
• BXDF. (Lambert, Oran Nayar, MicroFacet, MERL)
• Node graph based material system.
• Camera. (DOF)
• Multi-thread rendering.
• Blender plugin.

Operating System	Build Status
Windows (Visual Studio)
Ubuntu & MacOS

Here is a screen shot of SORT working in Blender

The following is an image generated by SORT