it is not. i just saved a 4096^2 dds. (made some random noise and stuff, saved via nvidia dds plugin...)
ah, i see.
the DXT5 preset and presumably other DXT* presets crash.
i just ran this through the RGB 8 8 8 filter and it came through converted to dds fine.
i'll give more data as i figure it out.
[edit] aaaand i nuked my photoshop plugin somehow. my reccomendation in any case is to use the nvdxt tools for dds creation.
as a side note, here's a sample command line for using nvidia texture tools 2.08
(this also assumes an install of the 64-bit version of texture tools on a 64-bit windows system..)
also, this assumes that you are currently within the directory containing said textures at the moment.
"c:\Program Files\NVIDIA Corporation\NVIDIA Texture Tools 2\bin\nvcompress.exe" -color -bc1 <insert name of file you wish to be converted> <insert name of file to which the converted file will be saved>
so, for converting an actual texture, here's an example of me compressing something.
"c:\Program Files\NVIDIA Corporation\NVIDIA Texture Tools 2\bin\nvcompress.exe" -alpha -bc3 untitled-1.tga 8k.dds
for textures containing an alpha map, the -alpha flag is mandatory.
-color flag is for textures NOT CONTAINING an alpha map.
-alpha flag is for the textures CONTAINING an alpha map.
-bc1 flag is for DXT1 compression
-bc1a is DXT1 + 1bit alpha
-bc3 is DXT5 with or without alpha, depends on the presence of the -alpha flag.
you can get nvidia texture tools
herethe full commandline explanation is
here.