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We talk to Mozilla about the future of WebGL, gaming in your browser

Mozilla talks to us about the future of gaming in the browser and the underlying open technologies they've developed.

4 minutes & 38 seconds read time

Mozilla has been pioneering different browser related technologies just as much as other competing companies and organizations have been, too, and one their focuses is on gaming. It might seem a bit strange to associate browser gaming to anything more than just the casual adventure we might partake of on an intermittent basis, but the underlying technologies can actually give us access to more powerful and interactive Internet experiences, and Mozilla is excited about being able to bring that to life as they continue to expand and grow the WebGL extentions in FireFox as well as allowing access to even lower-levels of functionality.

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There's a lot that's going on right now, and it's exciting to think that those simple web-games we used as escapes are becoming much more than that, even full blown-VR experiences. In fact, 3D games in a browser have already come a long way from where they once were. Turbulenz is a good example of a custom engine running over WebGL. Quake4 has been recreated with the engine, and it looks nearly as good as on PC. This is really only the beginning, with more advanced and better looking games and even full 3D modeling programs available in-browser. The possibilities are endless.

We got the chance to talk with Martin Best, Mozilla's Director of Platform Product Management, about what the future holds, and he's excited about what the future holds.

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Quake 4 in Turbulenz

What has been done to optimize WebGL over the past year?

We have been working to improve the performance, reach and capability of WebGL. WebGL 2 is in development and already in Firefox Nightly for testing. It brings new capabilities to allow developers to push the graphic fidelity of their experiences to higher levels. We are also investing in other areas that dramatically improve performance of games, such as SIMD support, WebAssembly, Shared Array Buffer and moving more APIs into Web Workers. All this comes together to unlock more power for developers.

What engines can be run in a browser? Which ones run best?

Currently we are aware of several, including Unity3D and Unreal Engine 4. Autodesk also showed an initial preview of Web export for their Stingray engine at our GDC booth. We have also seen more general tools like Adobe's Animate CC export to WebGL.'s Defold engine also supports exporting to the open Web game stack. It's also important to highlight companies building tools and engines specifically for the web such as Playcanvas, Turbulenze, and Goo Technologies. They are doing amazing things targeting mobile and designed to be very lite weight. Our WebGL 2 demo was done in Three.js, another popular engine.

As for which runs best, it really depends on what you are trying to do, they all have their pros and cons.

How does WebGL and asm.js operate on a low level? How efficient is it?

WebGL and asm.js are very low level abstractions. The best way to think about them is as a virtual GPU and CPU. This allows us to get very close to native speeds. WebAssembly continues down this same path and provides a more streamlined version that offers smaller downloads, faster load times, reduced memory usage and higher throughput. This also sets the stage for this technology to become relevant on mobile in addition to what we already see happening on desktop.

Could we see VR experiences rendered through the browser?

Yes and we're already seeing progress towards achieving this via WebVR, an experimental JavaScript API that provides access to VR devices such as the Oculus Rift or Google Cardboard in your browser. WebVR is helping to expand the limits of what's possible on the Web, from games to other types of experiences. For example, the Washington Post recently used A-frame, a technology pioneered by the Mozilla VR team, to create an immersive experience on Mars.

What do you see for the future of Web gaming? Where do you want it to go?

Mozilla pioneered and supports a wide variety of open Web technologies. We champion their use because this gives players instant access and friction-free game play across all supported Web devices. The future is Web games and their adoption is certainly growing. Over time, consumers will be able to find more and more of these games on the Web. To get there it's going to be technologies like WebAssembly and WebVR to driving Web games forward. That's why we are working on improving the current stack to make it work for more users, faster and with better overall performance to help developers maximize their ROI. We are also in active, ongoing discussions with other browser vendors about advancing the Web game stack and some of our early efforts there can be found at

We talk to Mozilla about the future of WebGL, gaming in your browser 1

Do you think we could ever see compute workloads being done in-browser?

Oh yes, while games are the incubator for many of these low level technologies, they are by no means the only use case. These are general technologies that can be applied to many different areas. We are seeing use of this technology to create full ports but also libraries that run alongside regular JavaScript. We already see developers making use of this technology for use cases like photo editing, porting databases such as SQLlite. Interesting examples of compute workloads in the browser include mapping, cryptography, compression, CAD, image editing, medical imaging, facial recognition. We have even seen people port full productivity apps, as well as building video codex support outside of the usual Web standardization process.

Why is this important for gamers?

Web games give players instant access and friction-free game play across all supported Web devices. At the same time, the Web is also a great place for developers to find audiences and increase revenue. As an example, we have seen mobile developers finding additional revenue opportunities on the Web, thanks to being able to publish outside of highly crowded app store ecosystems. Browsers are also transitioning away from plugins. New Web technologies are providing developers an alternative path to provide these same experiences that once relied on plugins. There are millions of people that play games on the Web today and these new technologies allow game developers to keep pushing those experiences to exciting new levels.

Thank you Martin for your time, we appreciate you taking the time to answer some of our questions about WebGL and where it's going. It does indeed look like the future is bright, enough so that there are as many opportunities for gaming success in the browser, as there are elsewhere.

Jeff grew up in the Pacific Northwest where he fell in love with gaming and building his own PC’s. He's a huge fan of any genre of gaming from RTS to FPS, but especially favors space-sims. Now he's stepped into the adult world by becoming a professional student looking to break into the IT Security world. When he’s not deep in his studies, he’s deep in a new game, revisiting an old game, or testing the extreme limits of his own PC. He's now a news contributor for TweakTown, looking to bring a unique view on technology and gaming.

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