The goal is to build a custom 3D engine without any libraries - just using WebGL2 API and what I have learnt while creating a 3D renderer in C. Guided by WebGL2 Fundamentals.

I'm using here Right-Handed Coordinate System (positive Z axis points out of the screen). I'm also using column-major matrices layout - so I will be using post-multiplication -> M * v to transform a vector v by a matrix M.

• Application without any WebGL2 context scores 4x 100% on lighthouse, with 0ms of Total Blocking Time, 0.8s First and Largest Contentful Paint. Speed index is 0.8s.
• After adding the WebGL2 context, the Total Blocking Time increases to 40ms.
• After adding 4 textures to load into GPU and a model to parse, the Total Blocking Time increases to 60ms. The rest of the metrics are the same.