Do you have any idea what that entails? 64 unwrappings requires 64 specific start-end coordinates and the 64 manual wrapping calculations associated with each.

Not sure I understand this. There a single set of texture coordinates that need to be "adjusted" in the pixel shader.

The OP's problem is solved by using a texture atlas with some wrapped border region included around each image in the atlas.

You never identified texture filtering as your main problem, and instead blamed texture wrapping.
If you’re already comparing your solution to an existing one’s, the bleeding is not caused by wrapping (it would be though), it is caused by bilinear-filtering.

... which is solved by having a border region surrounding the atlas image...

The OP's problem is solved by using a texture atlas with some wrapped border region included around each image in the atlas.

You never identified texture filtering as your main problem, and instead blamed texture wrapping.
If you’re already comparing your solution to an existing one’s, the bleeding is not caused by wrapping (it would be though), it is caused by bilinear-filtering.

... which is solved by having a border region surrounding the atlas image...

Eh... but you did claim there was an issue,

https://uvatlas.codeplex.com/

Hi,

I am looking for a tool capable of generating texture atlases. The intended usage is terrain texturing, which naturally must not suffer from the well known problem of bleeding. In that regard, I really like the solution described here: https://mtnphil.wordpress.com/2011/09/26/terrain-texture-atlas-construction/
Also, direct support for various formats (DXT1, DXT5, BC5 etc.) would be nice but that could be deferred to another tool. Plus, a configurable layout would be a handy feature too.
Now, does such tool exist or should I write my own one ? I looked everywhere for one but could not find any suitable.

Thanks!

https://uvatlas.codeplex.com/