This is an ongoing development project for a GPU based ray-tracer, initially based on Ray Tracing in One Weekend.

The backbone of this project is what I used to call WiW for Wgpu-Imgui-Winit (the frameworks I used to implement this). I have upgraded to the latest version of wpgu, imgui, and winit, and all are working.

I'm currently only rendering the final scene is RTiOW, though I used a BVH implemented with the SAH. I'm also trying to clock the megakernel (compute only) using write_timestamps, though the timestamps occasionally come back as zeros.

At this point in my progress, the next step is to implement a wavefront pathtracer. I will copy this code to a new repository, path_tracer_wavefront, and start fresh there with this as the starting point. I want to keep this in a working state for future comparisons.

Progress:

• basic camera movement implemented
• cpu code now runs with threads using rayon
• fixed resize screen bug
• updated camera and created camera_controller
• created common_code directory for better overall code management b/w gpu and cpu tracers
• updated cpu version of tracer for debugging purposes and added it to workgroup
• added imgui
• runs samples/frame until total samples/pixel is complete; shows progress in gui
• changed ray tracing generation algorithm from RTiOW to projection and view matrix based
• final pixel color has a sqrt taken; need to investigate colors more

To do (in no particular order):

• see if I can optimize this render time; I feel like 300ms for this image is too long, and I want to do real-time rendering
• implement a wavefront path tracing algorithm
• add other shapes (triangles, planes, quads, planes, etc)
• add more complex rendering ideas from PBR book
• load in more complex obj files for some cool pictures