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Introducing QOI — the Quite OK Image Format. It losslessly compresses RGB and RGBA images to a similar size of PNG, while offering a 20x-50x speedup in compression and 3x-4x speedup in decompression. All single-threaded, no SIMD. It's also stupidly simple. tl;dr: 300 lines of C, single header, source on github, benchmark results here. I want to preface this article by saying that I have no idea wh

Underrun – Making Of I participated in this year's js13kGames, a JavaScript game development competition with a file size limit of 13kb, including code, assets and everything else. My entry was Underrun, a twin stick shooter using WebGL. Play Underrun – A WebGL shooter in 13kb of JavaScript For this competition I set out to produce something with a dense atmosphere – which is inherently difficult

Decode It Like It's 1999 A few years ago I started to work on an MPEG1 Video decoder, completely written in JavaScript. Now, I finally found the time to clean up the library, improve its performance, make it more error resilient and modular and add an MP2 Audio decoder and MPEG-TS demuxer. This makes this library not just an MPEG decoder, but a full video player. In this blog post I want to talk a

Play GTA V In Your Browser – Sort Of Inspired by a blog post to run your own cloud gaming service which uses a VPN and Steam's In-Home Streaming, I thought I could do this, too, but in the browser. With the tech I developed for Instant Webcam I had all the major building blocks ready and just needed to glue them together in nice, useable Windows App. The result is jsmpeg-vnc – a tiny Windows appli

WipEout (PSX) – Model Viewer Scene: Camera: Free / Fly-Through Music: Play / Pause Read: Reverse Engineering WipEout

Your browser does not support WebGL. Try Chrome or Firefox. Mobile Safari has WebGL support in iOS 8. The Game is also available in the AppStore Credits Concept, Environments & Programming: Dominic Szablewski, Character Design & Artwork: Justin Spice, Music: Andreas Lösch, Special Thanks To: Sebastian Gerhard, Dennis Praschak, Henning Schuetz, Brandon Jones, Benjamin Hartmann

Fast Image Filters with WebGL WebGLImageFilter is a small JavaScript library for applying a chain of filters to an image. But to quote myself from twitter: That awkward moment when you realize the lib you've been polishing for the past 6 hours already exists. With more features and a better API. ~ @phoboslab, Nov 3. So, yes, there's already a library called glfx.js which basically does the same th

HTML5 Live Video Streaming via WebSockets When I built my Instant Webcam App, I was searching for solutions to stream live video from the iPhone's Camera to browsers. There were none. When it comes to (live) streaming video with HTML5, the situation is pretty dire. HTML5 Video currently has no formalized support for streaming whatsoever. Safari supports the awkward HTTP Live Streaming and there's

MPEG1 Video Decoder in JavaScript With still no common video format for HTML5 in sight, I decided to implement an MPEG1 decoder in JavaScript. I know there's already an h264 decoder for JavaScript around, but it's huge, compiled with emscripten and quite complicated. An MPEG1 decoder sounded like a relatively simple and fun weekend project. While the real world use cases for this are of course a b

Drawing Pixels is Hard Way harder than it should be. Back in 2009 when I first started to work on what would become my HTML5 game engine Impact, I was immediately presented with the challenge of scaling the game screen while maintaining crisp, clean pixels. This sounds like an easy problem to solve – after all Flash did this from day one and "retro" games are a big chunk of the market, especially

Letter to John Carmack The following is an email I sent to John Carmack of Id Software after I had watched his Quakecon 2012 Keynote Speech Edit: John Carmack's response is reproduced below Hi John, I watched the live stream of your keynote speech yesterday, and – as every year – I enjoyed it very much. I applaud your openness; it's always refreshing to hear some insights from the gaming industry

What the Fucking Fuck, Apple? Update Tuesday, July 16th 2012: The Bug appears to be fixed in iOS 6 Beta 3. Almost two years ago I noticed a strange multitouch problem in Mobile Safari with one of my games. This problem was new; it was introduced with the iOS 4.2.1 update and wasn't present on older iOS versions. I built a test case and filed a bug report with Apple. It was marked as a duplicate of

X-Type – Making Of For this year's Google IO, Google asked me to do a Chrome experiment for Mobile for them. They initially wanted me to vamp up Biolab Disaster – it's still a good game, but because of it's retro style it wouldn't be that impressive. Modern mobile browsers can do a lot more. I suggested I would try to take another game of mine – X-Type – and make it work on mobile browsers. The ga

JavaScriptCore Project Files for iOS Some weeks ago I released a compiled version of the JavaScriptCore library for iOS as part of my game engine. Since then I had many people asking for the project files necessary to build the library - and I promised to release them as well. But before I do so, let me just rant about Apple's politics real quick: They suck. You see, JavaScriptCore is an Open Sour

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iOS and JavaScript - for Real this Time! Less talk, more action – Apple just approved two of my JavaScript games for the AppStore: Biolab Disaster and Drop. Both are free; go check them out. You can also play them in your browser here and here. Both games are pretty simple (the source for Drop is only 300 odd lines long) and written with my JavaScript Game Engine Impact. These are certainly not th

My name is Dominic Szablewski. I build games, experiment with JavaScript and occasionally tinker with low-level C. Read my blog below and follow me on Github or Twitter.

Impact for iOS I know you're waiting for the release of the Impact Game Engine, and I promise you, it's coming. I just get distracted too easily. So here's my game Biolab Disaster running on the iPhone 3GS with 60 frames per second: The game is running in its own process and is not using the iPhone's browser at all. Instead, it's just using the JavaScriptCore Framework to run the game. All the nec

UVC Camera Control for Mac OS X For a recent computer vision project I needed to pull images out of a Logitech QuickCam 9000 and track some markers with the help of the ARToolKitPlus library. I connected the camera to my Mac and was quite surprised to see that it just works. There was no need to install any drivers. As I learned later, that's because the QuickCam 9000 is a UVC webcam for which Mac