Cannot open .raw files in GIMP to edit terrain

I need to be able to edit the .RAW files that Unity saves out from it’s export terrain functions. As you probably know, terrain objects export and import as a .raw image file in Unity.

I USED to be able to use gimp to edit these. Now it NO LONGER OPENS THE FILES. Just says it doesn’t support the file type. Latest version of Gimp, straight from the website, on a fresh install.

The googled solution USED TO BE apparently to install UFRaw as a plugin for gimp. However, the current version of UFRaw for windows from the website for the project now installs itself as a stand alone program instead of a gimp plugin. Fine I say, so long as it opens and converts.

Well UFRaw won’t open the raw files saved by Unity either.

It too, just spouts non-sense about the file type being unsupported. (Which strikes me as basically meaning UFRaw is now a broken pile of crap, because it’s whole existence was to be able to open RAW files in the first place, right? Whatever…)

So…that leave me with no way to edit/change any terrain data besides in house, in unity itself.

Which lacks tools for making edges match, and leaves me unable to make a map that loops on itself cleanly. (This is for infinite terrain, which I’m trying to do by simply cloning the terrain and swapping piece A and piece B during the runtime. The game only goes in one direction, so the illusion only needs to work that one direction.)

How can I edit these files so I can make seamless terrain chunks, without a copy of Photoshop?

Like I said, GIMP used to do it, but apparently now only can export to, not import from, the raw format. Why they removed it when it worked just fine before, I don’t really care.

I just need something that works, and has some basic selecting, flipping, and copy-pasting at this point. All I want to do is open the file, take a corner of it, mirror it into the other three corners, and thus make a “looping texture” out of the terrain data.

There’s Fiji, which allows you to import and export a lot of file formats. You are aware that GIMP is absolutely unsuited for editing heightmaps, right? (Only 8 bit depth processing).

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I know this is a 3 year old post however hopefully it helps someone.

Fiji is exactly what I needed having an issue where my heightmap was too big for Unity and I wanted to cut it into quadrants. I created my map in L3DT Pro and then from there Fiji allowed me to split it up into 4’s.

Nice post, Sniper Fan.

Another late one, but I just wanted to say TY to original poster, this is priceless.

Gimp can’t handle such files just tried so that was a complete bust, and few can afford Adobe ( though its alot better ) so this is a huge plus for those currently on tight budgets.