Oops... I accidentally opened the wrong style in mapbox where the water was black, got the wrong result, thought the feature was broken, and broke a properly working feature.
Sorry, I'll try to be more careful.
I reverted this back, and have already released a new version.

About Huge Texture:
The problem is that Huge Texture generates RGB image, not grayscale.
That's why the converter says that the file size doesn't match.
You need to do the following:
Open hugeraw in explorer, make a copy of the file and change the extension to raw. Open the file in photoshop, and do the steps you did with the regular texture.

I'll also attach a second video
https://youtu.be/lDHElfVtTu8
In this I show you that I can't use a texture created with HugeTexture inside the underwater field and I can't even convert it to BitMask (which would be fantastic given the increase in resolution and therefore precision).

If it didn't work like this, it would be interesting to be able to create the underwater automatically on each tile of the terrain, so as not to have a single texture for the entire terrain of large dimensions such as (200Km x 200Km).

I hope you understand my problem
Thank you

Video:
https://www.dropbox.com/scl/fi/42j3vaci … a&dl=0

P.S. I have a localised version of Photoshop that I haven't switched to English for the video.
But I think you will have no problem understanding what I'm doing.

Thanks also for the explanation of the threshold, now I understand.

About the threshold:
When you use grayscale, you can have a value of each colour between 0-255.
The threshold is a value, all values below which RWT considers water.

In the attachment you will find how I stap by step.
I also tried the same procedure saving the Raw in 8bit.

What does the Threshold field mean?
Are the parameters entered in BitMask Convert correct? Why keep telling me that the width, height, and depth values are wrong?

Another thing I asked you was if I could use hugeraws created with Huge Texture but Photoshop or other software doesn't allow me to convert them and the BitMask Converter doesn't accept them. If I could use those, which have a higher resolution, could the BitMask also be more precise?
I should use them for terrain larger than 200Km x 200Km.

Thank you

Open your texture in any advanced graphic editor (Photoshop, Gimp, etc).
If your image is in RGB or CMYK mode, convert it to greyscale.
File / Save As and select file format - RAW.
Remember the width, height, depth (8 or 16 bits) you specified when exporting and specify them when importing.

Important: in the conversion tool I forgot that RAW at 16 bits depth can have Windows or Mac byte order, so export with Windows order (of course, if you want to use 16 bits depth for some reason).

Hello.
Theoretically I can add such a feature.
Practically, it will be very not optimal, because 20Kx20K texture will use 1.2GB of memory.
In this case it is better to make bitmask support + converter.
Bitmask will only use 50MB of memory in this case, and will not be size limited at all.

Hi Alex, I'm bothering you again.
Some time ago you implemented for me the possibility of adding a bitmask in the underwater generation field of a terrain.

I also purchased your HugeTexture asset because I needed to use a B/W map greater than 8K.

Unfortunately I still can't fully understand how it all works.
By selecting BitMask I have the possibility to add a "TextAsset" file which I think is the extension of the BitMask (but which I don't know where to find) and if I click on "Open BitMask Converter" I can insert a Raw file and convert it into the "Text Asset" file that I need.
(Although I have no idea what to put in the threshold field )

But now I have the problem that I can't get the Raw.
Huge Texture creates a HugeRaw but I can't use it in the cornvert because it doesn't accept the format.
However, when I create a "Regular Texture" during the creation of the terrain, I have the possibility of having only png or jpg.

Can you insert a system that allows me to also convert HugeRaws into Text Assets?
Can you also add the Raw format when creating "Regular Textures"?

Thank you very much for your patience and availability

Until 1 August it is very likely to be released.
Until 8 January it will 100% not be released.