I've been trying to make a XPack with stamp vertex objects without success. Objects whit this shader always face to the viewer, and this is particullary useful for crowd or trees, as they look like 3d objects, though they are made using only one face (or two triangles). Vertex coordinates are unique, but there is an extra channel in texture coordinates to show the "projection" of the texture from the unique vertex point. This is a sample of a single file: https://mega.co.nz/#!tA9WRSSC!nNYU6RLfTQLglPZoBhv9iHyGg7Geb7zjfrohbSUKKy8 3ds format doesn't support multiple texture coordinates channels, so I tried to use DAE, but when I export from 3dsimed (using the last Collada exporter), BTB's XPacker can't read the resulting DAE file. In fact, DAE files exported from 3dsimed, can be re-imported to 3dsimed, and texture channels remain almost the same (U coordinates are exactly the same and there's a minimum change in the sixth decimal of V coordinate), but Vertex Alpha changes to 255 making the object invisible until is changed to a different value. Having the chance to add these kind of files to XPacker would allow us to make XPacks with crowds, trees, plants, rocks, poles and similar objects saving lots of polygons. Any idea?