https://tchayen.com Tomek's programming blog. https://tchayen.com/notes-from-benchmarking-wasm-and-optimized-js https://tchayen.com/notes-from-benchmarking-wasm-and-optimized-js One night I got an intrusive thought: I never compared the fast CDT Zig code to some baseline JS implementation. Sun, 19 Oct 2025 00:00:00 GMT https://tchayen.com/webgpu-obj-loading-and-perspective-camera https://tchayen.com/webgpu-obj-loading-and-perspective-camera Tiny guide how to get started with WebGPU – loading OBJ files and an interactive perspective camera. Sun, 04 May 2025 00:00:00 GMT https://tchayen.com/handmade-pathfinding-mesh-for-games https://tchayen.com/handmade-pathfinding-mesh-for-games Ever thought that implementing dynamic constrained Delaunay triangulation shouldn't be that hard? Sun, 23 Feb 2025 00:00:00 GMT https://tchayen.com/unicode-text-rendering-in-zig-with-freetype-and-harfbuzz https://tchayen.com/unicode-text-rendering-in-zig-with-freetype-and-harfbuzz For a change I am not reinventing the wheel but using state-of-the-art libraries to render (almost) any text. Fri, 18 Oct 2024 00:00:00 GMT https://tchayen.com/open-problems-of-a-star-for-any-angle-pathfinding https://tchayen.com/open-problems-of-a-star-for-any-angle-pathfinding Exploration of various ways to apply A* for any angle Euclidean path search problem. Wed, 08 May 2024 00:00:00 GMT https://tchayen.com/constrained-delaunay-triangulation-from-a-paper https://tchayen.com/constrained-delaunay-triangulation-from-a-paper Sloan's fast algorithm for generating constrained Delaunay triangulation implemented from a paper. Sat, 23 Mar 2024 00:00:00 GMT https://tchayen.com/drawing-text-in-webgpu-using-just-the-font-file https://tchayen.com/drawing-text-in-webgpu-using-just-the-font-file How to parse TTF font file to render text using the SDF (Signed Distance Field) method. Fri, 29 Sep 2023 00:00:00 GMT https://tchayen.com/thousands-styled-rectangles-in-120fps-on-gpu https://tchayen.com/thousands-styled-rectangles-in-120fps-on-gpu Secrets of rendering extremely fast UIs in WebGPU by minimizing overhead on the GPU. Tue, 29 Aug 2023 00:00:00 GMT https://tchayen.com/pbr-in-webgpu-implementation-details https://tchayen.com/pbr-in-webgpu-implementation-details Short write-up on how to implement a physically based renderer with Image Based Lighting using WebGPU. Sat, 15 Jul 2023 00:00:00 GMT https://tchayen.com/how-to-write-a-flexbox-layout-engine https://tchayen.com/how-to-write-a-flexbox-layout-engine You won't guess how little code it takes to write a Flexbox-like layout engine that can arrange many common UIs. Sun, 25 Jun 2023 00:00:00 GMT https://tchayen.com/using-zig-for-writing-opengl-in-browsers https://tchayen.com/using-zig-for-writing-opengl-in-browsers What if, instead of running JS everywhere, we went all-in hardcore low-level coding? Sat, 29 Apr 2023 00:00:00 GMT https://tchayen.com/understanding-react-by-implementing-it https://tchayen.com/understanding-react-by-implementing-it From the creator of broken Google Maps clone, now a broken React ready to conquer your node_modules. Thu, 12 Aug 2021 00:00:00 GMT https://tchayen.com/baked-lighting-in-r3f https://tchayen.com/baked-lighting-in-r3f Technique of baking light used for achieving very well performing Three.js scene with amazing visuals. Mon, 18 Jan 2021 00:00:00 GMT https://tchayen.com/making-of-3d-chess-in-react https://tchayen.com/making-of-3d-chess-in-react Summary of how I made a playable Chess game in React using React Three Fiber and 3D assets I made in Blender. Wed, 06 Jan 2021 00:00:00 GMT https://tchayen.com/ttf-file-parsing https://tchayen.com/ttf-file-parsing Font files, although binary, are not hard to parse. Even in JavaScript. Sat, 02 Nov 2019 00:00:00 GMT https://tchayen.com/making-our-own-tiny-google-maps https://tchayen.com/making-our-own-tiny-google-maps Have you ever dreamed about creating your own interactive maps like the Google Maps? Sat, 07 Sep 2019 00:00:00 GMT https://tchayen.com/fetching-data-from-the-open-street-maps https://tchayen.com/fetching-data-from-the-open-street-maps A non-obvious task of downloading data from OSM has unexpected, highly programmable solutions. Thu, 05 Sep 2019 00:00:00 GMT https://tchayen.com/triangulation-of-polygons https://tchayen.com/triangulation-of-polygons Triangulation is the thing you need when you have polygons, but GPU can only render triangles. Sun, 13 Jan 2019 00:00:00 GMT https://tchayen.com/wireframes-with-barycentric-coordinates https://tchayen.com/wireframes-with-barycentric-coordinates A handy hack to render wireframe of a mesh. Use barycentric coordinates to achieve uniform edge width. Sat, 05 Jan 2019 00:00:00 GMT https://tchayen.com/brief-explanation-of-webgl https://tchayen.com/brief-explanation-of-webgl Short guide on the concepts of 3D rendering and the maths behind it. Matrices, perspective and lighting. Wed, 26 Dec 2018 00:00:00 GMT https://tchayen.com/web-mercator-projection https://tchayen.com/web-mercator-projection A short note on the Web Mercator projection and its coordinate conversion formulas. Sun, 23 Dec 2018 00:00:00 GMT