Re:Porting to Emscripten
by AgentME on Tuesday November 04, 2014 @05:52PM
(#8559556)
One thing missing from the article: If you have a fullscreen mode, provide an alternative to the escape key for opening menus or whatever action you had bound to that key, because the browser interprets escape as a command to exit fullscreen mode. Plenty of the Humble Bundle asmjs games didn't get this.
Re:Porting to Emscripten
by Lerc on Tuesday November 04, 2014 @03:37PM
(#8558905)
That is a more serious question than it first appears at first glance.
Firefox, GCC, cat, gzip, PovRay are all things that should be potentially doable. Each one will not necessarily _have_ to be done, but the idea should be embraced to see if they are possible. If there is any reason why these things are impossible, that should be an area to focus on. Why is it not possible? Should it be possible, and if so, how to make it possible.
Re:Porting to Emscripten
by bobajeff on Tuesday November 04, 2014 @05:32PM
(#8559466)
I can't wait until the tooling gets to where I don't have to debug natively first.
I perticularly ran into issue dealing with unimplemented functions in some POSIX libraries. Then I tried to use the source maps in a debug build to find out when and where they were being used during runtime because they would stop the rest of the program. Unfortunately I couldn't compile the debug build because emscripten kept getting stuck in the linking phase (I had to force quit). I hope one day this all works as well as the Android NDK.
Re:Porting to Emscripten
by marcosscriven on Wednesday November 05, 2014 @03:50PM
(#8564162)
You can use the other core, but you have to think of them a little like separate machines. They can't share memory, but you can pass messages between them very fast (using JS's underlying Trasferale Objects)
If you can use bump/frame allocators those 'messages' can be whole chunks of 'memory'.
Re:Porting to Emscripten
by hippich on Wednesday November 05, 2014 @12:28AM
(#8560629)
It already does - just run your code in webworker. I am doing it at https://hashcash.io/
Detection of number of available cores is totally different problem. On the other hand, probably detecting number of cores should not be used in first place..
Re:Porting to Emscripten
by flohofwoe on Wednesday November 05, 2014 @06:13AM
(#8561318)
Shameless plug for my MIT licensed, experimental, mini C++11 multiplatform engine which has been designed specifically with emscripten in mind: http://floooh.github.io/oryol/
Firefox, GCC, cat, gzip, PovRay are all things that should be potentially doable. Each one will not necessarily _have_ to be done, but the idea should be embraced to see if they are possible. If there is any reason why these things are impossible, that should be an area to focus on. Why is it not possible? Should it be possible, and if so, how to make it possible.
I perticularly ran into issue dealing with unimplemented functions in some POSIX libraries. Then I tried to use the source maps in a debug build to find out when and where they were being used during runtime because they would stop the rest of the program. Unfortunately I couldn't compile the debug build because emscripten kept getting stuck in the linking phase (I had to force quit). I hope one day this all works as well as the Android NDK.
Sorry, this is a total showstopper for me. I'll check back when Emscripten actually lets me use more than 1/4 or 1/8 of the CPU.
Detection of number of available cores is totally different problem. On the other hand, probably detecting number of cores should not be used in first place..