WebGL Water Simulator • Hacker News Board

Re: WebGL Water Simulator

#11

Post by Animats » Sat, Jan 10, 2015, 10:57 PM UTC

That's beautiful. I used to write physics engines back when we had 100 MIPS, and could only dream about doing stuff like that in real time.

A nice use for this would be to emulate a ripple tank, as used in high school physics labs.

Re: WebGL Water Simulator

#12

Post by frozenport » Sat, Jan 10, 2015, 11:04 PM UTC

On Android Firefox:

    Error: Rendering to floating-point textures is required but not supported.

Re: WebGL Water Simulator

#13

Post by bobajeff » Sat, Jan 10, 2015, 11:17 PM UTC

guidedlight wrote: post #9

Surprisingly, this demo works great on my iPad 4.

Yeah, I just tested it on my mid-range android phone with Chrome. It works surprisingly well, though it lags a bit it's still usable. Really all webgl stuff should work on mobile since it was designed with that in mind. Ironically it probably wouldn't work on my old desktop with the Directx9 capable nvidia card.

Re: WebGL Water Simulator

#14

Post by serf » Sat, Jan 10, 2015, 11:18 PM UTC

frozenport wrote: post #12

On Android Firefox: Error: Rendering to floating-point textures is required but not supported.

same on Firefox Developer Edition 36.0a2 (2015-01-10).

Re: WebGL Water Simulator

#15

Post by jsheard » Sat, Jan 10, 2015, 11:23 PM UTC

frozenport wrote: post #12

On Android Firefox: Error: Rendering to floating-point textures is required but not supported.

Android Firefox and Chrome both implement the floating-point textures extension, but your devices GPU also has to natively support it.

If you're interested, you can check what your device supports with a tool like this: https://play.google.com/store/apps/details?id=com.darkrockst...

Not all of the GLES extensions will be exposed to WebGL, but most WebGL extensions directly map to a GLES one (GL_OES_texture_float in this case).

Re: WebGL Water Simulator

#16

Post by [deleted] » Sat, Jan 10, 2015, 11:29 PM UTC

[deleted]

Re: WebGL Water Simulator

#17

Post by frozenport » Sat, Jan 10, 2015, 11:30 PM UTC

josephpmay wrote: post #2

The author of this simulation seems to have forgotten the effects of refraction. Besides that, it's great!

Are you talking about total internal reflection? http://upload.wikimedia.org/wikipedia/commons/5/5c/Total_int...

I think I can find an angle where you can't see the skybox.

Re: WebGL Water Simulator

#18

Post by elberto34 » Sat, Jan 10, 2015, 11:46 PM UTC

does this use the navier stokes equations? How are the ripples generated?

Re: WebGL Water Simulator

#19

Post by imaginenore » Sun, Jan 11, 2015, 12:00 AM UTC

This is 4 years old.

Re: WebGL Water Simulator

#20

Post by shurcooL » Sun, Jan 11, 2015, 12:01 AM UTC

> This demo requires a decent graphics card and up-to-date drivers. If you can't run the demo, you can still see it on YouTube.

Works great on my iPad mini 2. Pretty incredible.