I continued the work on the PBR rendering demo for my game engine jan-kelemen/niku. Although I thought most of the preparation work was already done, I guess it’s never enough for things like this.

Here is a complete diff between the state shown previously and as it is now. The video demonstrates a couple of scenes and assets shown previously. Illumination is done with point lights using linear attenuation.

I switched to using PBR Neutral tone mapping and real linear to sRGB conversion instead of Reinhard tone mapping and gamma correction. They look better, here is a nice comparison of various tone mapping functions.

First official devlog of my game engine jan-kelemen/niku!

Since I’ve moved the code to a dedicated repository, I’ve done some work on the rendering side of things. The first goal is to get a Physically Based Rendering (PBR) working in at least somewhat reusable state for other projects. I started by making a demo application that displays glTF files. The current state of the demo is shown in the video below.

It doesn’t do any PBR for now, but most of the preparation work is done, I’ll start working on the PBR soon™.

Since I had never actually written a raytracer, I wanted to learn about this topic by following along with the popular Ray Tracing in One Weekend book. The title doesn’t lie, my first CPU raytracer did take only one weekend.

Afterward, I tried making the same raytracer using a compute shader and with the possibility to move around the scene in real time. Results are in the video below, link to the source code: jan-kelemen/beam