Means little whether it was open sourced or not in terms of compatibility ...
If the most successful graphics mod projects are based on source code access as we see with the source engine (Portal RTX) or older id Software game engines (Quake II RTX) then RTX Remix can only flourish with only as many games out there that are reverse engineered. The goal of compatibility quickly gets out of traction with bad doucmentation, source code is loss due to poor archiving, and when contacts are now few/far in between since many of the projects participants have left the industry or are retired ...
If the most successful graphics mod projects are based on source code access as we see with the source engine (Portal RTX) or older id Software game engines (Quake II RTX) then RTX Remix can only flourish with only as many games out there that are reverse engineered. The goal of compatibility quickly gets out of traction with bad doucmentation, source code is loss due to poor archiving, and when contacts are now few/far in between since many of the projects participants have left the industry or are retired ...