Hi guys,
Nice spot from ouille, this is probably a trouble about the texture format. See the console about the loading of this texture, it's probably a blended texture.
After a very quick look to the Raydium doc, we may have a small gap in this doc about texture types. A texture may be :
- standard ("3 Bpp b0" in the console) : no blend at all
- alpha only ("1 Bpp b1"), like smoke, fonts, ...
- alpha blended (" 4 Bpp b1"), as logo6.tga or the Clio's windscreen for example (and probably your texture)
The problem is that blended textures (b1) can't be rendered like others, because of ZBuffer concept. It may work for car windows for example, but not for a tower, as you see
So Raydium provides sort of a compromise, with "cutout" textures (b2), where pixels are 100% transparent of 0% transparent.
So for you vicente, two solutions :
1) Your texture does not need to be blended, so remove the alpha layer (in gimp: "flatten image" in Layers [CTRL+L], for example) so your texture can be only 3 bit per pixel (3Bpp in the console), as almost all other textures.
2) Your texture need to have some "holes", so you must have an alpha layer (it's always a better idea to create holes in the 3D model in this case, but not always possible). Then you must be very carefull to have only 0% or 100% opacity for every pixel. (gimp: Layer -> Transparency -> Threshold Alpha)
Hope that helps ! (We may update the doc, if so

)