(My name isn't Gavin it's Gabi lol)
"Hi Gavin.
Sorry but I have no idea about the source of the environment textures. I only worked on the 3D characters and animations. Iām assuming you mean the Ofer Alon/Chris Senn incarnation.
As far as I recall, I always assumed Ofer had done the textures used (maybe with help from Chris Senn).
But if they indeed came from a texture pack, then Iām more inclined to think it was Ofer rather than Chris who did this.
Using stock art as a base wasnāt a thing game artists even considered doing back then. It wasnāt as simple as now to actually incorporate and use, we were all more interested in creating our own art anyway and of course there was always the copyright issue.
Still, everything was prototype at best running on a PC so itās possible these programmer textures would have been replaced long before they were converted to the only platform that mattered for SonicX, the Saturn console.
Sorry I canāt be more helpful,
Ross"