Eevee how to control volume density with precision?

Support Lighting and Rendering
1

Did my fair amount of searching on the subject but it is older stuff for Cycle but i did try a few node setup but nothing work properly in Eevee.

I want to have control on the fading of a vertical volume instead of the abrupt change you see here ;

volume_density_precision
volume_density_precision1920×1080 938 KB

I tried a 2d gradient done in Photoshop but as expected it didn’t work because it was not a 3d gradient texture. I also tried with gradient ramp all mode ease, b-spline etc and nothing can make that volume transition more gradual.

Maybe one of you have an idea on how to achieve it?

2

Can you give us the blend file? It would be easier to examine this that way.

3

Sure here it is i had to remove ocean surface and floor since it was too big to upload.

underwater_shader_forum.blend (750.8 KB)