I have discovered that if you open certain dds files directly using Paint.net I will get this result:
If I open the same file with DXTBMT first and then send it to Paint.net to edit I get this:
Paint.net will open dds files but I cannot figure out why Paint.net will not open the same file as accurately as DXTBMP did.
I did go to their help page and there was some explaination of the checkers and such.

If I open the same file with DXTBMT first and then send it to Paint.net to edit I get this:

Paint.net will open dds files but I cannot figure out why Paint.net will not open the same file as accurately as DXTBMP did.
I did go to their help page and there was some explaination of the checkers and such.