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Re:Jellyfish Simulation using Javascript, WebGL by RyanMcGreal on Wednesday April 20, 2011 @11:32AM (#2467015)
I tried to run it in Firefox 4.0 and Chrome 10.0.648.204, but in both cases it returned an alert with the message, "This website requires WebGL. Try running Chrome 9+ or Firefox 4+".
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Re:Jellyfish Simulation using Javascript, WebGL by allenp on Wednesday April 20, 2011 @02:51PM (#2467870)
Do you have WinXP? I think WebGL is disabled by default in XP because of instability (at least in Chrome).
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Re:Jellyfish Simulation using Javascript, WebGL by RyanMcGreal on Wednesday April 20, 2011 @10:35PM (#2469248)
I just ran it on Chrome 10.0.648.205 on Ubuntu 10.10 and I get the same error.
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Re:Jellyfish Simulation using Javascript, WebGL by codedivine on Thursday April 21, 2011 @03:55AM (#2469768)
I don't think any browser supports WebGL on Ubuntu yet.

edit: On Ubuntu, first close all chrome windows. Then start chrome with the command-line option "--ignore-gpu-blacklist" and it works.

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Re:Jellyfish Simulation using Javascript, WebGL by andrenotgiant on Wednesday April 20, 2011 @11:50AM (#2467084)
I think that might have something to do with the underlying GPU capabilities of your computer, happened to me as well with Chrome 12!
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Re:Jellyfish Simulation using Javascript, WebGL by KirinDave on Wednesday April 20, 2011 @12:14PM (#2467180)
Your browser is not checking your graphics card.

It's an error in the version detection.

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Re:Jellyfish Simulation using Javascript, WebGL by thwarted on Wednesday April 20, 2011 @01:17PM (#2467468)
This is why we should be checking for capabilities/features and not version. And part of this is reporting the correct, helpful error message when the capability isn't there, and not just say they have the wrong version.

I still have this problem with 64 bit flash on Linux, which adobe has decided to use a different format version string for.

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Re:Jellyfish Simulation using Javascript, WebGL by rfurmani on Thursday April 21, 2011 @02:40PM (#2471754)
It is checking for capabilities and not version: try { gl = canvas.getContext( "experimental-webgl") ; gl.viewportWidth = docWidth; gl.viewportHeight = docHeight; } catch(e) { } if (!gl) { alert("This website requires WebGL. Try running Chrome 9+ or Firefox 4+"); }
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Re:Jellyfish Simulation using Javascript, WebGL by techiferous on Wednesday April 20, 2011 @11:57AM (#2467111)
Yep, it's not the Chrome version. It works fine for me using Chrome 10.0.648.204.
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Re:Jellyfish Simulation using Javascript, WebGL by zerosanity on Wednesday April 20, 2011 @01:13PM (#2467454)
I'm trying with FF4 and Chrome 11 with a GeForce 9600 GT and it still gives me the error message.
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Re:Jellyfish Simulation using Javascript, WebGL by jrsmitchell on Wednesday April 20, 2011 @03:25PM (#2468006)
GPU acceleration is off by default in Chrome 10 on Windows XP.

It worked for me when I started Chrome with: chrome.exe --enable-webgl --ignore-gpu-blacklist

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Re:Jellyfish Simulation using Javascript, WebGL by azakai on Wednesday April 20, 2011 @02:48PM (#2467855)
Works great here on Firefox 4, so maybe a problem with your graphics card drivers? Do any other WebGL demos work?
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Re:Jellyfish Simulation using Javascript, WebGL by websg-x on Wednesday April 20, 2011 @11:16PM (#2469318)
Mozilla maintains a wiki on blocked video drivers and how to force enable them for each os/platform.

https://wiki.mozilla.org/Blocklisting/Blocked_Graphics_Drive...

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Re:Jellyfish Simulation using Javascript, WebGL by nitrogen on Wednesday April 20, 2011 @05:04PM (#2468372)
I had to go to about:config and force WebGL enabled on Firefox 4 on XP with a Geforce 8800GT.
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Re:Jellyfish Simulation using Javascript, WebGL by demallien on Wednesday April 20, 2011 @12:28PM (#2467239)
Performance is heavily bound by the GPU on my system - Chrome goes from sucking up 60% of my CPU down to just 7% when I launch the demo(OK, I've got crappy Intel integrated graphics, but still). I consider that to be a good demonstration that JavaScript performance is now capable of driving detailed 3D scenes.
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Re:Jellyfish Simulation using Javascript, WebGL by prewett on Wednesday April 20, 2011 @02:32PM (#2467774)
Looks really cool! Not having much experience with oceans, it's a little weird to see the jellyfish swimming sideways; I'm assuming they mostly swim "up"?
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Re:Jellyfish Simulation using Javascript, WebGL by sambeau on Wednesday April 20, 2011 @03:22PM (#2467998)
If they only swam up they would soon run out of sea!
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Re:Jellyfish Simulation using Javascript, WebGL by prewett on Wednesday April 20, 2011 @06:47PM (#2468712)
:) I was assuming sort of an up-and-sideways kind of up, and maybe they sink down when they hit the top and go up-and-sideways again. Jellyfish just don't seem like the right-angles-to-the-surface sort of swimmers to me, but like I say, I have no experience with jellyfish, not even seeing them on nature shows.
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Re:Jellyfish Simulation using Javascript, WebGL by zacharycohn on Thursday April 21, 2011 @01:40AM (#2469571)
As someone who has swam through jellyfish, they totally swim sideways.
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Re:Jellyfish Simulation using Javascript, WebGL by niels_olson on Wednesday April 20, 2011 @08:59PM (#2469049)
which is usually exactly what they do. Go to Boston Harbor in the summer.
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Re:Jellyfish Simulation using Javascript, WebGL by Mavrik on Wednesday April 20, 2011 @12:21PM (#2467208)
sigh

Running @ 45fps on a computer that runs Crysis 2 @ 60 FPS on extreme settings. Performance of WebGL is still abysmal and unusable it seems.

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Re:Jellyfish Simulation using Javascript, WebGL by peregrine on Wednesday April 20, 2011 @01:33PM (#2467536)
Which I can argue is pretty good for beta software, with very little heavy commercial use driving performance down. I also highly doubt the chrome/firefox team has enough resources allocated to truly make webgl a high performance thing yet. Regardless this is still faster then using canvas directly.
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Re:Jellyfish Simulation using Javascript, WebGL by jws on Wednesday April 20, 2011 @02:15PM (#2467702)
Don't go to a movie theater. They call it "moving pictures" when they sell you the ticket, but it is only 24 frames per second, and the individual frames don't move. Bogus.
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Re:Jellyfish Simulation using Javascript, WebGL by naz on Wednesday April 20, 2011 @03:28PM (#2468018)
Movies have motion blur which smooths out the judders of a low framerate
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Re:Jellyfish Simulation using Javascript, WebGL by iamwil on Wednesday April 20, 2011 @05:44PM (#2468509)
In addition, human eye can detect flicker better in a bright room, vs a dark one. That's why movies can get away with 24 fps, and not something higher.

That said, you don't need 60fps to enjoy what you're watching unless you're playing games.

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Re:Jellyfish Simulation using Javascript, WebGL by akira on Thursday April 21, 2011 @02:48AM (#2469694)
This is not very optimized app. There is a lot of overdraw for the volumetric effect and jellyfish transparency which kills the performance most of all. Also, animations are done in vertex shader on a high poly geometry and the shader itself could be much more efficient in doing that.

Im sure you cant run Crysis 2 in WebGL but you can still squeeze out a lot of performance out of it. Im excited to see what other people are going to make with it.

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Re:Jellyfish Simulation using Javascript, WebGL by pygy_ on Wednesday April 20, 2011 @08:31PM (#2468996)
Counterpoint:

I get 30 FPS on a machine with an Intel E2180 @2GHz processor and a GeForce 8400 GS...

Chrome 10 on WinXP 32bit.

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Re:Jellyfish Simulation using Javascript, WebGL by ebtalley on Wednesday April 20, 2011 @01:15PM (#2467464)
My first thought was rate limiting, I tweaked the settings for speed and still capped out at 50fps.
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Re:Jellyfish Simulation using Javascript, WebGL by huntero on Wednesday April 20, 2011 @08:50PM (#2469031)
Honestly, this is the first time I've ever caught myself saying "Wow!" out-loud when visiting a website.

But, I think there is some issue with the framerate reporting. It was indicating between 40 and 60fps on my machine, but performance was fairly choppy.

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Re:Jellyfish Simulation using Javascript, WebGL by WesleyJohnson on Wednesday April 20, 2011 @12:24PM (#2467222)
Using Chrome 11.0.696.50 beta here. It took a while to setup in that I got a partial skybox and a few jellyfish popping up and then a few more and then a few more after that. I thought the camera or scene was changing because it was so jarring. Once setup though, it works pretty well.

I get 8-9fps with the default settings. Reducing the count of Jellyfish to 5 gave me closer to 20fps. Reducing it to 1 and turning off Skybox and Particles gave me about 40fps, but didn't look nearly as cool.

Very nice demo.

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Re:Jellyfish Simulation using Javascript, WebGL by reedlaw on Wednesday April 20, 2011 @01:05PM (#2467423)
Surprisingly it works fine in Ubuntu with Chrome 10. I'm glad Chrome development progresses on Linux evenly with Mac and Windows as compared to Skype which lags behind.
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Re:Jellyfish Simulation using Javascript, WebGL by pyre on Wednesday April 20, 2011 @07:05PM (#2468769)
With Skype, Windows is in the lead, with Mac trailing a ways behind, and Linux even further behind. Though with the reception of the latest Skype version for Mac, maybe it's a good thing that Linux is lagging behind.
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Re:Jellyfish Simulation using Javascript, WebGL by mcdaid on Thursday April 21, 2011 @04:35AM (#2469823)
This is really good, it would be good if there was a way to use these kind of things as screen savers. There are so many good browser visualizations!
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Re:Jellyfish Simulation using Javascript, WebGL by markkanof on Wednesday April 20, 2011 @01:19PM (#2467481)
Very cool. I got about 50 FPS on a VMWare Fusion virtual machine. Granted it had my two virtual CPUs up around 90% usage, but still impressive.
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Re:Jellyfish Simulation using Javascript, WebGL by cnlwsu on Wednesday April 20, 2011 @11:47AM (#2467076)
looks beautiful in chrome 10
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Re:Jellyfish Simulation using Javascript, WebGL by tlrobinson on Wednesday April 20, 2011 @05:07PM (#2468381)
It's telling me I'm getting ~15 fps but it looks more like 2 fps to me. MBP, Chrome 10.

EDIT: restarted Chrome, it's working much better now.

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Re:Jellyfish Simulation using Javascript, WebGL by anigbrowl on Wednesday April 20, 2011 @12:36PM (#2467283)
Impressive despite the performance issues - I got OK FPS but it tended to stutter. I'm using a cheapie GPU though.
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Re:Jellyfish Simulation using Javascript, WebGL by theschwa on Wednesday April 20, 2011 @03:40PM (#2468055)
Can someone post a screen shot for those of us whom it's not working?
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Re:Jellyfish Simulation using Javascript, WebGL by slug on Wednesday April 20, 2011 @06:29PM (#2468656)
You can check the author's blog, he has a few videos on how he made it, in particular one where he uses a kinect interface: http://blog.aleksandarrodic.com/?p=60

I'm running firefox 4 (linux ubuntu 64bit) and it works fine.

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Re:Jellyfish Simulation using Javascript, WebGL by argarg on Wednesday April 20, 2011 @04:06PM (#2468149)
http://i.imgur.com/r7SVE.png

It's all moving very smoothly and realistically for me on Chrome 12. You can also move your mouse to move around. Cool stuff.

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Re:Jellyfish Simulation using Javascript, WebGL by skymt on Wednesday April 20, 2011 @04:02PM (#2468137)
http://min.us/lk8hvc
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Re:Jellyfish Simulation using Javascript, WebGL by iwjames on Thursday April 21, 2011 @08:02AM (#2470296)
Neato. I want to see a game made out of this.
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Re:Jellyfish Simulation using Javascript, WebGL by lupatus on Wednesday April 20, 2011 @01:04PM (#2467418)
Holy crap this is cool!
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Re:Jellyfish Simulation using Javascript, WebGL by lupatus on Wednesday April 20, 2011 @04:43PM (#2468294)
How long did it take you to create this?
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Re:Jellyfish Simulation using Javascript, WebGL by akira on Thursday April 21, 2011 @02:43AM (#2469684)
2 weeks for the first demo: http://aleksandarrodic.com/p/jellyfish/

Then about two months for the rest of the stuff

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Re:Jellyfish Simulation using Javascript, WebGL by Skywing on Wednesday April 20, 2011 @11:24AM (#2466973)
this is impressive.
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Re:Jellyfish Simulation using Javascript, WebGL by jerome_etienne on Wednesday April 20, 2011 @11:22AM (#2466963)
+1 for webgl :)
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Re:Jellyfish Simulation using Javascript, WebGL by Swizec on Wednesday April 20, 2011 @11:36AM (#2467031)
Very shiny and pretty, but dear god I could hardly type in skype, it was printing out characters at a pace of 0.3/second.
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