David Mkrtchian — Writing https://www.davidmcarati.info/blog/ Long-form engineering essays on Unity, WebGL, WebAssembly, JavaScript architecture, and real-time systems — by David Mkrtchian, Tech Lead and senior engineer. en davidmcarati@gmail.com (David Mkrtchian) Two Float Arrays and a Function Call https://www.davidmcarati.info/blog/two-float-arrays-and-a-function-call/ https://www.davidmcarati.info/blog/two-float-arrays-and-a-function-call/ Thu, 13 Aug 2026 09:00:00 GMT How I replaced string-based interop with shared memory between a Unity WebAssembly build and the JavaScript driving it webassembly unity javascript webgl performance Four Attempts at Water https://www.davidmcarati.info/blog/four-attempts-at-water/ https://www.davidmcarati.info/blog/four-attempts-at-water/ Thu, 13 Aug 2026 09:00:00 GMT Order-independent transparency, a per-fragment colour ramp, and the three approaches I had to throw away first unity shaders webgl graphics webassembly Eighty Lines Instead of a Container https://www.davidmcarati.info/blog/eighty-lines-instead-of-a-container/ https://www.davidmcarati.info/blog/eighty-lines-instead-of-a-container/ Thu, 13 Aug 2026 09:00:00 GMT Our Unity WebGL build resolves its services through a static locator — the textbook anti-pattern. Here is the derivation that got us there, and why I think the derivation matters more than the answer. unity architecture dependency-injection webgl csharp A Constraint Solver With No Equations https://www.davidmcarati.info/blog/a-constraint-solver-with-no-equations/ https://www.davidmcarati.info/blog/a-constraint-solver-with-no-equations/ Thu, 13 Aug 2026 09:00:00 GMT How a scene written as intent becomes exact metres and degrees — sixteen pure functions, one priority ladder, and no simultaneous system anywhere javascript architecture geometry computational-geometry compilers Undo When You Cannot Re-Simulate https://www.davidmcarati.info/blog/undo-when-you-cannot-re-simulate/ https://www.davidmcarati.info/blog/undo-when-you-cannot-re-simulate/ Thu, 13 Aug 2026 09:00:00 GMT Stepping backwards through a physics-driven lab, where the authored state, the simulated state, and the state on screen are three different things unity architecture javascript state-management webgl Ordering Is the API https://www.davidmcarati.info/blog/ordering-is-the-api/ https://www.davidmcarati.info/blog/ordering-is-the-api/ Thu, 13 Aug 2026 09:00:00 GMT Five load-bearing constraints in one wiring file, three different mechanisms, and not one of them expressible in a type system javascript architecture unity webgl frontend A State Machine With a Border Running Through It https://www.davidmcarati.info/blog/state-machine-with-a-border-running-through-it/ https://www.davidmcarati.info/blog/state-machine-with-a-border-running-through-it/ Thu, 13 Aug 2026 09:00:00 GMT Ten phases per step, split across a JavaScript orchestrator and a C# runtime, with three completely different ways of finishing javascript unity architecture webassembly state-management An Engine Inside the Engine https://www.davidmcarati.info/blog/an-engine-inside-the-engine/ https://www.davidmcarati.info/blog/an-engine-inside-the-engine/ Thu, 13 Aug 2026 09:00:00 GMT One Unity WebGL binary serves a lab player and a 3D scene editor. The trick was not unifying them — it was knowing which layer to share and which to leave alone. unity webgl architecture webassembly javascript Your Designer Learned to Vibe-Code? Give Him a Playground https://www.davidmcarati.info/blog/your-designer-learned-to-vibe-code-give-him-a-playground/ https://www.davidmcarati.info/blog/your-designer-learned-to-vibe-code-give-him-a-playground/ Thu, 13 Aug 2026 09:00:00 GMT Thirty-nine widgets and a design system, written by someone who is not an engineer, inside a boundary that makes it safe architecture frontend javascript design-systems ai