Changes

In general, Mashinky can load multiple texture formats which are used for various purposes in the game. Specifically for game assets, it's best to use[https://en.wikipedia.org/wiki/DirectDraw_Surface *.dds] format of textures. DDS stands for DirectDraw Surface, what is native format for DirectX, an industry standard. Vanilla textures curently use DXT3 filtering. The size of textures is of power of two (2^n), so in the line of 128^2, 256^2, 512^2, 1024^2, 2048^2...

There are no materials per se like in other engines/tools though the game works texture sets of sorts. Each UV set (part of a model on separate texture) uses in fact two textures, one is used as a regular color/diffuse texure + alpha and the other, with _n suffix, utilizes it's channels for different purposes.