Water material only part transparent

Support Materials and Textures
1

image
image3836×1915 781 KB

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I have made a water simulation and it works but… the water is not transparent at all places. At every angle it shows some transparent surfaces but also a grey sort of layer.

I have set
render
(eevee) to subsurface scatering to enabled

material
Blend mode: alpha blend
screen space refraction enabled

I just cannot figure it out this time. Any help welcome.

2

Your alpha is 1 so its opaque.

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3

Thanks for the reply, I was tunning with the alpha but the more it is turned down, the less of the material (water) you will actually see.

I have some more information, in viewport shading mode, the water is perfect, nice and transparent, also with alpha set to 1. Maybe it has something to do with the lighting also?

screenshot viewport shading mode:

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image941×890 279 KB

4

This screenshot isn’t showing transparent water- if it was, you could see the cracks in the wall behind it.

5

It is probably due to the Reflection as well as the Refraction…you set the Refraction to ON, but with no depth… also set your subsurface translucency under the Refraction…
That Grey layer may be the reflection of the world you are using…
Also if you are using EeVee make sure to turn it on under Screenspace reflection, Refraction…

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image1920×962 301 KB

You can see also that I have set some roughness as it will bend the refraction as another control since roughness scatters more light…and will bend the refraction if you try it…

Also FYI, using Transmission, you can actually set the Blend Mode to Opaque and get the same effect…and using Transmission Roughness will control the Refraction Bend as well…

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image1654×840 217 KB

6

I see a few issues:

1-In your first image, the light source has a huge radius and it seems to overlap with the water. This is going to create a massive, incorrect reflection of that light in the water.

2-There is no background. If you are using a reflective or refractive material, you need either a surrounding scene or a background that will be reflected for the object to look right.

3-Eevee is very limited when it comes to water materials. You can only have a single layer of refraction, so don’t expect to get results as realistic as Cycles would give.

1 Like
7

After reading the comments I started testing. And the solution was indeed a combination of alpha, refraction, lights. After fine tuning all of these items/settings i have a result I can work with.

Thank you all !

3 Likes