VIDE says that it's licensed under GPL 2.0.
The SDL port of vecx claims to be licensed under GPL 3.
I found what looks like the original vecx, and I don't see a license at all: http://www.valavan.net/vectrex.html
I would like to take the Imager code for vecxi and translate it for JSVecX and add WebXR support, to see what Imager games are like in a VR device like Oculus Quest 2, without needing to own a real Vectrex and Imager. But GPL 2 (without 'and later') and GPL 3 are not compatible,
Is it permissible to take the Imager code and use it in a GPL 3 project? Do I need special permission? Can VIDE, or at least this component, be relicensed to GPL2+?
VIDE says that it's licensed under GPL 2.0.
The SDL port of vecx claims to be licensed under GPL 3.
I found what looks like the original vecx, and I don't see a license at all: http://www.valavan.net/vectrex.html
I would like to take the Imager code for vecxi and translate it for JSVecX and add WebXR support, to see what Imager games are like in a VR device like Oculus Quest 2, without needing to own a real Vectrex and Imager. But GPL 2 (without 'and later') and GPL 3 are not compatible,
Is it permissible to take the Imager code and use it in a GPL 3 project? Do I need special permission? Can VIDE, or at least this component, be relicensed to GPL2+?