Community asset pack

Geaxle

I am very impressed by all this  G: Nice work!Damn, I am such a newb, I have no idea how to make something remotely close to that. Where do you even start learning about shaders? I am starting to think that if I want to do a nice looking atmosphere for my planets this is the way to follow but I have no idea how to start.EDIT: thanks for the below links and explanation (I didn't want to clutter your thread) I'll read about it and start with smaller things first.

Megalomaniak

Yeah, This was my first shader in about ten years tbh...

You might need to read up a little on vector math, matrix mutiplication and ring math etc. Not to say that this is absolutely necessary, but it will make your life way easier.

Before I started working on this shader I couldn't even make heads or tails of the Shlick's approximation. And the thought of learning the math seemed scary, but at least far as getting a fresnel reflection working, it all turned out to be way easier to figure out than I originally thought.

So, I would definitely suggest reading up on some linear algebra & vector math first, even if you don't get it all, just familiarizing yourself with the terms used is a big step towards reading and understanding academic papers and other peoples code, and hey, this will all be useful for much more than just shaders.
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But perhaps most important is to realize that you don't really need to get it all at once, just start with some really simple looking shader you can find and start implementing it while searching for the answers you need when you need them online. Learn to research as you go.
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Also, in case your memory similarly to mine is fading in regards to math symbols, here's a resource I have found very helpful:
http://www.rapidtables.com/math/symbols/Basic_Math_Symbols.htm

edit: oh yeah, and I have already started looking into implementing atmospheric scattering/skydome, but I honestly think it's going to be a bigger challenge than a water shader.

Megalomaniak

Especially because Toger5 showed interest in this in the past, I have improved the absorption color, at least I think it's much better:

And here is a shot of the material parameters as I have them set up:

toger5

I tested your shader and I really like it now (setup is much easier, I didn't need long to get values which looked good) But I had a hard time getting the light right. Can you give some tips on the light setup.In my point of view your version has much to intense blue values. This makes it looking a bit unrealistic. In this aspect I still prefer the version 0.3 look you uploaded. There you had more variation in the specular areas and the water color was more realistic.But i love the displacement and the distortion of the objects underneath.For everyone who didn't tested it, it looks much better than in the screenshots when you have the shader in godot and can see the animated water.

Megalomaniak

Yes I have at least one tip! In my parameter setup that I showed I set the 'saturation(as in the S in HSV)' ~~high~~ midway(sorry, other way around) to accentuate the water coloring([tt]actually I was re-calibrating my monitor that same day and at certain points the screens colors and brightness might have been a bit off[/tt]), but left the V ~~sort of midway~~ high, the color input as the name indicates is absorbed color/spectral absorption so for more realistic values you might want to absorb linearly.

I.E. move the color absorption along not just the 'y' axis of the color selector but also 'x', or in other words diagonally, because the absorption color not only defines the hue & saturation of the spectrum absorbed but also the value/brightness(the amount of light absorbed).

Density in the meanwhile controls how far or nearby the transparency fade out is(relative to mesh size). Basically it controls the density of 'biological contaminants'.
Think in terms of like say if there's algae in water - they would absorb light refracted through the surface of the water. hope this clears it up somewhat.

And don't feel shy asking any questions, one of the very reasons I like to share my assets is precisely because questions and input from others helps me improve these assets not only for others but also for myself! So that's what I get out of it. And vice versa! 🙂

Gokudomatic

The idea of a community asset pack is very interesting. I'll see how I can contribute to it.Is there a repository for this pack? How can we upload an asset?

Megalomaniak

Well, I have not set up a repository since so far little interest has been shown, however I'm not sure there's a need for a repository just yet anyhow since a few single assets can likely be handled fine without.

As/If this takes of I do think github is likely the best bet, initially however something like dropbox, google drive or the like might be fine IMO. That is to say a file hosting service that keeps your files tied to your account and doesn't just delete them after a while.

For starters though, any 3D assets you'd like to see made? Asking for barrels and chests would be fine I suppose however I'd especially prefer request's that can't be already found on opengameart.org. 😉

Gokudomatic

Repositories have the advantage of versioning. Plus, with github for instance, it is easy for people to send a pull request of their change.However websites like opengameart offer other tools like a preview of the asset.Let's take a concrete example. I took a picture of rocks for a texture and I edited it to make it seamless. There it is:[img width=760 height=362]https://raw.githubusercontent.com/gokudomatic/godot_fps_crawler/master/project/textures/stone1.png[/img]I didn't put a licence on it. Well, it's just some random picture of a stonewall. Nothing special.But putting it here in a thread, just like that, is not an option, is it? People expect to preview the asset pack and to download the last version easily. Github offers to download a zip of a repository, on top of cloning it with git. Maybe it's not the best solution but I find it quite good already.However it would be a waste to not use existing solutions to create the pack. For instance, why not sending it to OpenGameArt?

Megalomaniak

Gokudomatic wrote
However it would be a waste to not use existing solutions to create the pack. For instance, why not sending it to OpenGameArt?

Yes, that would work for graphics assets however I don't think I've seen any scripts hosted in there and in my mind the purpose of this asset pack would be to have a Godot specific asset pack with everything in one place and licensed clearly, I'm thinking: MIT for scripts/code(I consider purpose built scripts with reuse in mind assets as well, i.e. a player controller), and CC-BY 3.0 for graphical assets, for an example. Thoughts?

As for github, yes, as I said I think it's the best way to go long term, however if there's only like 2 models, 4 textures and a shader in it then I'm not sure if it deserves its own repo, yet. As it grows though it definitely will in time.

Gokudomatic

I'm fine with the licenses. I see your point about the assets. Indeed, if it contains Godot specific files (scripts, scenes), we can't use an existing library website. Therefore, as you suggested, github seems the way to go. But I think the pack should be from the start properly structured. Going from a thread to a repository has a couple of disadvantages. Sure putting all in a thread is easier but that won't attract people. And a community project needs popularity above all. If we starts with a nice and shiny infrastructure, people would be more willing to post their asset. The disadvantage I see with github is that people who just want to post one or two assets (image,audio or script) don't have a one-click way to do it. So, a dedicated thread would still be needed.Another question: who maintains the pack? I can surely contribute by sending assets, but integrating the new assets, building the pack and maintaining it over time is not something I can imagine to do myself.

Megalomaniak

version 0.6b_test Download

Note again that this is just the shadergraph.
For the texture use a normal map and height map should be in the alpha.

edit for 2024+ this download is for use in godot 2 IIRC.

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