What is Wang?
Wang tiles are sets of textures that fit together to non-periodically tile across the terrain,
creating expanses of non repeating texture and avoiding the 'carpet' effect.
Making them by hand can be time consuming but like all things the more you make the easier it gets.
So, lets look at the basics before we get into the details.
Railworks uses 8 wang tiles to create a terrain texture and like everything in RWs they need to be named correctly.
These textures need to be 32 bit which means they need an alpha channel. The Alpha channel is used for the blending between different texture sets.
How do we get the textures to tile in a set?
Next up in Part 2, picking the right image to get your textures from and getting the scale correct for ingame. (you don't want pebbles the size of footballs).