Ripple

Here's a small shader I found that was in GLSL, and I thought it was pretty neat. So I ported it to Cg, modified it a little, boom - it worked

Well, I didn't make the fantastic scene, but I do plan to
A few simple scene, the shader, script, and material are all setup and ready to be used.

Currently the wave frequency and amplitude are adjustable. In the shader, I have commented out the noise portion, but have put comments in if you wish to add it.





I hope someone find a good use for this

 

Well the pic is tiny and clicking on it links to a blank white page
So I'll trust it looks great-well done modifying shaders
AC

EDIT Oh wait its working now along with its lovely ads. looks like I won something. I hate those ads. Shader looks good though. Is the ripple animated?

If someone reads this in 6months, will image shack still have those pictures? It would be good if this thread made sense to future readers.

 

Nice shader

would this be something for an Ocean
wave shader? . it's nice to have an
animated wave loop in it, or random
wave generator (perlin noise)

norby

 

Could you post a webplayer with this ?

It so much nicer to see shaders in action rather then a screenshot.


Tnx

 

This is animated, but can be paused (depending if in the shader you use the built in _Time uniform variable).

Here's a web player of what I've got currently got. Use the up and down arrows to adjust the wave frequency, and the left and right arrows for the amplitude. I tried this on the built in Water, and it seems to work, but I'd need to add a different texture (or somehow combine two like they do in the original Water shader) and add some type of transparency. Neither of things I'm 100% sure of how to do, but I should be able to figure it out.

I should note that the actual vertices of the mesh stay intact, they aren't moved at all. It's all done in the fragment shader. Would a (sin wave) vertex variant be nice to have also?

 

Here's what it might look like if you were to use it for water. (Sorry for the ugly scene, I'm slowly improving it )

 

Hi Bronx

i have tried the web player, i must say it looks great.
can you put some randomness in the formula?. a little bit
of noise instead of a sinus would be cool.

Norby

 

Yeah, that can probably be done.

 

Very nice.
Where can I get the shader?

 

Shader will be posted soon

Attached is a webplayer of shader with some noise added. It's a different scene (water), because with the noise the sphere looks flat
The shader and a basic scene will be released today. Just need to clean a few things up.

 

Yesss , great work. this is fun.
what if you initiate 2 sources of noise
crossing each-other . and then use this
shader on a plane with a mesh deformer
script to create more Amplitude.javascript:emoticon('')

norby

 

Yesss , great work. this is fun.
what if you initiate 2 sources of noise
crossing each-other . and then use this
shader on a plane with a mesh deformer
script to create more Amplitude.javascript:emoticon('')

norby

 

I'm not sure if that's possible, since all the work is done on the fragment shader, and at it's core it just does some fancy math to produce a new texture coordinate. If it is possible, I don't know how to (yet)

 

never mind. i am not a coder, that's why
i am always exited when somebody creates new stuff.
looking for a way to create realistic ocean waves.
will you post it on wiki ? thanks for your work.

Norby

 

Original post updated with the shader source

 

very nice! thanks for sharing