Upgrading

Requires new QTV or QTV-Go due to the MVD stream gameplay protocol alignments. As long as no colormod entities are used, demos and QTV should still be possible to consume in outdated ezQuake clients. Enabling colormod entities will disconnect outdated ezQuake QTV clients with "msg_badread in packetentities" or similar. ezQuake from 2013 and newer should be able to read alpha attribute correctly, even if it's rendered opaque. Even without alpha and colourmod MVD/QTV was broken if a map had too many models or entities, even if fully connected clients would deal with that correctly.

Fully connected outdated clients will be dynamically downgraded to not include colormod or alpha entity properties. For alpha this will yield a warning about client potentially being at a disadvantage as maps may assume the client being able to see through some surface that is opaque for them. This downgrading only applies to clients called ezQuake with a revision older than 7814 as it announced PEXT_TRANS support since 2013 while only partially implementing it. Official builds always have a correct revision set, scuffed ones may have revision as 1, so make sure you're not using a shallow clone when building on your own.