Emscripten and New Javascript Engine Bring Unreal Engine To Firefox

MojoKid writes "There's no doubt that gaming on the Web has improved dramatically in recent years, but Mozilla believes it has developed new technology that will deliver a big leap in what browser-based gaming can become. The company developed a highly-optimized version of Javascript that's designed to 'supercharge' a game's code to deliver near-native performance. And now that innovation has enabled Mozilla to bring Epic's Unreal Engine 3 to the browser. As a sort of proof of concept, Mozilla debuted this BananaBread game demo that was built using WebGL, Emscripten, and the new JavaScript version called 'asm.js.' Mozilla says that it's working with the likes of EA, Disney, and ZeptoLab to optimize games for the mobile Web, as well." Emscripten was previously used to port Doom to the browser.

Comments

Chrome

[The MAZZTer]

Looks like Chrome is looking to do this as well.

Re:Remember the good old days?

[Pieroxy]

What happened to seeing a grid of 80x25 characters on a black background? Progress.

64-bit gives better security

[pavon]

Plus, there is no real advantage to using a 64-bit browser unless you want it to use more than 2gb of memory

ASLR (Address Space Layout Randomization) is far more effective in a 64-bit address space than in a 32-bit address space. Browsers need all the layers of protection they can get from exploits.

On the other hand, WebGL gives any website in the world nearly direct access to exploit bugs in GPU drivers, significantly increasing the attack surface of the browser. I say nearly, because the browser does check all parameters for possible buffer overflow conditions before passing them onto OpenGL calls, but any other type of exploit is still possible.

I would definitely prefer that Firefox prioritize features that increase security over those that decrease it.

Re:I don't care

[Enderandrew]

64-bit browsers are inherently more secure, and can access more memory. Native 64-bit apps also run faster. You're trying to call someone an idiot without realizing that you don't know what you're talking about in claiming there are no advantages.

http://arstechnica.com/information-technology/2012/11/64-bit-firefox-for-windows-should-be-prioritized-not-suspended/

Re:Javascript engine evolution

[buchner.johannes]

Ah, my mistake. "use asm" is a proposed Javascript feature:

... asm.js, a strict subset of JavaScript that can be used as a low-level, efficient target language for compilers. The asm.js language provides an abstraction similar to the C/C++ virtual machine: a large binary heap with efficient loads and stores, integer and floating-point arithmetic, first-order function definitions, and function pointers.

http://asmjs.org/spec/latest/
Also interesting:

You could write your programs in Asm.js, but the idea is that you will use other languages that compile to Asm.js. This opens up the possibility of converting existing desktop apps to run in the browser. Emscripten, for example, is a compiler that converts the LLVM bitcode intermediate language to either JavaScript or the asm.js subset.

http://www.i-programmer.info/news/167-javascript/5694-firefox-runs-javascript-games-at-native-speed.html