`vm_legacy`

OpenJK

Needs review. The inventory/provenance evidence is recorded, but some behavior, options, or attribution still lacks a direct user-facing source.

Controls vm_legacy in the engine-shared module. Consult the cited behavior reads before relying on values not listed here.

At a glance

Field	Value
Category	Engine & diagnostics
Module	`engine-shared`
Also registered in	`engine-shared`
Renderer	All / not renderer-specific
Network scope	`client-only` — Local to the client/UI/renderer.
Derivation	`code-trace`
Confidence	`medium`
In-game xdocs	No
In-game menu	No
Default	`0`
Value type	`bitmask`
Restart	No latch flag is registered.
Cheat protected	No

Values

No discrete value list is enforced or documented in the inspected source.

Flags

CVAR_TEMP — temporary and not archived

Provenance

Origin: OpenJK

Ultimate-origin introduction: beadbaa9f0a2 in OpenJK (content authored 2014-02-08, integrated 2014-02-10)
Upstream registration evidence: codemp/qcommon/vm.cpp:61
Attribution method: squash-feature-group-explicit-credit
Attribution confidence: medium
Notes: The identifier’s single-prefix squash feature group explicitly credits openjk. Dated commit evidence identifies later registration changes relative to the origin snapshot.

Dated project introductions

Authored dates come from the exact registration’s first content commit, PR dates identify when work was proposed to each project, and integration dates come from each first-parent mainline. A project merging first does not override earlier upstream authorship or submission.

Project	Authored	PR opened	Integrated	Commit	Relationship
OpenJK	`2014-02-08`	—	`2014-02-10`	`beadbaa9f0a2`	Ultimate origin
EternalJK	`2014-02-08`	—	`2014-02-10`	`beadbaa9f0a2`	Shared integration commit
rend2	`2014-02-08`	—	`2014-02-10`	`beadbaa9f0a2`	Shared integration commit
TaystJK	`2014-02-08`	—	`2014-02-10`	`beadbaa9f0a2`	Shared integration commit
jaPRO	`2014-02-08`	—	`2014-02-10`	`beadbaa9f0a2`	Shared integration commit
NewJK / NewMod	`2014-02-08`	—	`2014-02-10`	`beadbaa9f0a2`	Shared integration commit
Vulkan	`2014-02-08`	—	`2014-02-10`	`beadbaa9f0a2`	Shared integration commit

Later changes

These commits occur after the ultimate-origin introduction on TaystJK’s inherited first-parent lineage. Registration evidence is exact; behavior evidence requires a changed bound cvar reference or a changed registered command-handler hunk.

Date	Change source	Commit / subject	Evidence	Confidence
`2014-04-01`	OpenJK	`f6474d6681d8` [MP] Clean up VM handling	Changed an exact bound cvar-variable reference. `codemp/qcommon/vm.cpp`	`medium`
`2019-04-11`	EternalJK	`d62c674f6332` Remove _DEBUG define from vm_legacy cvar.	Changed registration, default, flags, module, renderer scope, handler, or gating. `codemp/qcommon/vm.cpp`	`medium`

Evidence

registration: codemp/qcommon/vm.cpp:58 (Cvar_Get)
behavior: codemp/qcommon/vm.cpp:153