A small C++ GUI tool to aid conversion of PNG and JPEG skin and mod textures to archived DDS textures for Trackmania 2020. Internally NVIDIA's NVTT-3 is used for the format conversion, with optional high quality downsampling with a Kaiser-windowed Sinc filter.
As input it takes a folder (with subfolders for map mods) of PNGs and JPEGs, and can output either a folder or archive of DDS files (the latter for car skins). DDS block compression variant is detected automatically based on the input filename:
- *_B -> BC1
- *_R -> BC5
- *_I -> BC3
- *_N -> BC5
- *_A0 -> BC1
- *_DirtMask -> BC1
- *_D -> BC3 if the source image has an alpha channel, otherwise BC1
- *_H -> BC1
- *_M -> BC3
- *_L -> BC3
- *_CoatR -> BC1
