In this project, we will design and implement a ray-trace framework based on programming models presented by modern commodity GPUs. The framework will define and support replaceable processing modules in ray-tracing, such as ray generation, ray-object intersections, and illumination. The framework will be designed and implemented targeting general-purpose commodity GPUs and does not require special-purpose hardware. This feature will enable platform portability.

Multiple reflections (4 generations) between primitive spheres. Intersect program, closest hit shader, and secondary ray generations, are programmable.

• Design and implement a ray-tracing framework on the Unity 3D engine. This framework will allow users to program various ray-tracing modules.

• Implement a collection of the modules to demonstrate the feasibility and modularity of the framework and assess the performance of the framework.

• Provides real-time ray-tracing rendering capability in both offline editing (edit-mode) and runtime (play-mode).
• Supports at least three different replaceable and programmable ray-tracing modules.
• Defines the interfaces between the three modules.
• Allows custom programs to modify the rendering in runtime.
• Support different ray generation kernels.
• Support multiple illumination models in the same scene.
• Support directional light sources, point light sources, and spotlight light sources.
• Support shadow rendering by shadow rays or by shadow maps.
• Refraction and transparency.
• Volumetric rendering, such as light shaft and scattering.
• Allow users to define programs for generating acceleration structures.