Subsurface Scattering for Foliage, in Unity (WITHOUT RAYTRACING!) 

me too

How did that go? I can't find a node for "World space light direction"

@@bryantenorio368 Hard to get lighting data in shader graph I've noticed as well, so not sure! We tried a programmatic approach, and made a tutorial on that a while back (for Toon shader), similar principle could work, but there are other approaches using custom nodes I know.

Yeah, Unity is too lazy to improve on their shader graph so they decided to let the community do it and charge $100 for it. Wish Unity could be more Dev friendly like the Unreal Engine, it's one of the biggest things I hate the most about Unity. It's a good tool, but I can't afford to spend $100 on it. Seems some of the best sharers use it too and I think these guy's do this so that you'll be more inclined to send the money on Patreon.....Knowing it's cheaper then laying down $100 on a tool, when I see these video's I automatically give a thumbs down and Unsubscribe from their channel.

Thank you so much for watching! Let me know if there are any topics in particular you'd like covered in the future.

I'm always very interested in shaders with "movement" implied like foliage, water, liquid, clouds and shaders for lighting solutions like fake lighting with sprites, fake volumetric lighting... It's also very cool to see how different approaches (yours vs other tech artists) can have a similar result !

exactly.

same

i am currently on that... it's beenn 2 weeks now

Shader Graph and whole rendering pipeline shenanigans are not gonna be production ready for quite some time, best to use ASE tbh ;) I'd rather see this translated to code than SG

You can if you write your own custom one.

Because translucency would only allow light to shine through from directly behind the object. However, subsurface scatter, as the name implies, scatters the light, so it lights even when the light comes at an angle. Also, you're not supposed to see the actual geometry behind the object, only bright lights.

@@hellothere_1257 Yeah I ended up figuring that all out after finally being forced to create my own shaders.

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xHD7Q36-Dao.html your answer

Actually, depending on the material, that doesn't have to be the case (if I understand you correctly). You can get often much more illumination when the light is shining through a material than when it's reflecting off it, particularly with foliage. I had this lovely potplant with thin leaves once, and when the light was behind it, it glowed like it was on fire. So pretty. But regardless of that, this isn't a properly calculated physically accurate effect anyway, it's a super fake hacky way to approximate it. You can absolutely tweak the values to make the direct lighting stronger or weaker than the subsurface lighting with multipliers. Just go with what looks right to you.

If the opacity nodes are blocked off (depending on your setup), you can still get transparency by using a Grab Screen Colour, and blending that in with the SSS mask, however, this will also require the shader to be in the transparent render queue (rendered after all the opaque objects) which changes the shading and drops shadow support. Another way that maintains the benefits of being a properly lit opaque shader, is to use Dither to do transparency. It makes lots of little dots, in different patterns to fake transparency - it's not true transparency, as pixels are either completely opaque or transparent so it creates a noisy effect, but with the right AA it can look pretty good. If you use Dither, I recommend finding a 'blue noise' tilable texture, rather than using the build in Dither patterns. I'm a big fan of dither - when you first see it you'll probably be disappointed that it doesn't look as smooth as real transparency, but I think players are pretty forgiving, and I think it's worth it for the benefits of avoiding the transparent render queue.

The two are unrelated to eachother. Rim light emulates a reflective surface by using fresnel to make geometry pop around the edges. This SSS actually let's light sources shine through the geometry. If you combine this effect with fresnel however, you get a really nice result.

You have to change the Light Model from Standard to Custom Lighting to enable the custom lighting input.

Hi there! When you're using custom lighting, you have to calculate all that stuff yourself. Amplify Shader Editor comes with a Blinn-Phong Light node, which does that for you (you can see this setup at 2.34 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RPkhbjmmvS0.html), but if you wanted to do it yourself, a simple starting point is NdotL, which is the the Dot Product of the Normal Direction and the Light Direction (clamped 0-1 usually), which gives you basic light information. You can see an example of that node setup here: wiki.amplify.pt/index.php?title=Unity_Products:Amplify_Shader_Editor/World_Space_Light_Dir I hope that helps! Let me know if anything else doesn't make sense and I'm happy to talk you through it.