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So, does feeling like a noob in Blender continue for YEARS or something? Because I'm about exhausted by this. Here's a material that is working, from someone's tut example: enter image description here

Note that the alpha-effect is working so that you can see what's behind the 'water'.

Now, here's mine: enter image description here

The only difference that I can see is that I'm driving everything from UV Map instead of generated (since I modified the meshes).

I have also confirmed that these Settings (for the Mat) are in effect for both materials: Blend Mode: Alpha Blend / Shadow Mode: Opaque

I'm guessing there must be an errant checkbox that I am missing. I also went in the EEVEE settings to ensure that nothing was weird there. Source has nothing special in that regard. Thoughts?

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  • $\begingroup$ I've rebuild your material from the screenshot and it works fine for me. Only thing i can think of is that the blackness is maybe the casting of a shadow, although it doesn't seem likely. I'd be happy to look at your file if you'd share it. $\endgroup$ Sep 13 '20 at 21:39
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You beat me to it with answering your own answer (and I'm glad it works for you), but just to clarify i will share what i found:

I believe your tutorial example uses transparency while you use it to a considerable lesser extent (or not at all).

the Transparency color (blue) you used is on the edge of the color circle (while the blue in the example is probably closer to the white center). In this node setup, the more white the color is, the more transparency it causes. Because your blue is relatively dark, the waterfall became less transparent and, in combination with the brown background, visually black.

If you had changed the blue Transparent BSDF color to a color with more white it would be to more like the tutorial example; more transparent.

And I think if you had kept the color the same but changed the Transparent BSDF node to for instance a Diffuse BSDF node you would get a non-transparent waterfall of that color.

But adjusting the ColorRamp also seems to work : )

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  • $\begingroup$ Much more comprehensive answer. Thanks so much! $\endgroup$ Sep 14 '20 at 20:06
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Here is the node-setup that works: enter image description here

I had things a bit wrong and needed to route my color ramp through the emission. Rookie mistakes man...

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