`con_opacity`

OpenJK

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

Opacity of console background

At a glance

Field	Value
Default	`1.0`
Value type	`float`
Restart	No latch flag is registered.
Manually settable	Yes
Cheat protected	No
Network scope	`client-only`: Local to the client/UI/renderer.
Category	Engine & diagnostics
Feature family	Console
Module	`engine-client`
Renderer	All / not renderer-specific
Derivation	`documented`
Confidence	`medium`
Added	2014-03-30 in `37a07abc8` needs review (how to compare this against your build)
In-game xdocs	No
In-game menu	Yes: ingame_setup.menu:3338

Values

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

Flags

CVAR_ARCHIVE_ND: saved to configuration without marking the cvar as user-created

Provenance

Origin: OpenJK

Ultimate-origin introduction: 4e834782a30a in OpenJK (content authored 2014-03-30, integrated 2014-03-30)
TaystJK integration evidence: 37a07abc8b26
Upstream registration evidence: code/client/cl_console.cpp:419
Attribution method: shared-earliest-commit-lineage-order
Attribution confidence: medium
Notes: The earliest authored/submitted introduction is shared by openjk, rend2, newjk; fork-lineage order selects 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	`2014-03-30`	—	`2014-03-30`	`4e834782a30a`	Ultimate origin
rend2	`2014-03-30`	—	`2014-03-30`	`4e834782a30a`	Shared integration commit
NewJK / NewMod	`2014-03-30`	—	`2014-03-30`	`4e834782a30a`	Shared integration commit
EternalJK	`2014-03-30`	—	`2014-03-30`	`37a07abc8b26`	Other project appearance
TaystJK	`2014-03-30`	—	`2014-03-30`	`37a07abc8b26`	Other project appearance
jaPRO	`2014-03-30`	—	`2014-03-30`	`37a07abc8b26`	Other project appearance
Vulkan	`2014-03-30`	—	`2014-03-30`	`37a07abc8b26`	Other project appearance
JK2MV	`2023-02-26`	—	`2023-02-26`	`94a4cbd57201`	Other project appearance

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
`2014-03-30`	OpenJK	`37a07abc8b26` [MP] Console no longer uses frac in determining opacity. Renamed the cvar for this fix and set its default value to 1.0 to mimic basejka MP. SetColor call now sets RGB to 1.0f instead of 0.0f, as it should.	Changed registration, default, flags, module, renderer scope, handler, or gating. `codemp/client/cl_console.cpp`	`medium`
`2015-11-24`	EternalJK	`c8f6ea17a324` Remove SP code	Changed registration, default, flags, module, renderer scope, handler, or gating. `code/client/cl_console.cpp`	`medium`
`2016-03-24`	EternalJK	`c9c6ab99fdd2` Merge branch ‘master’ of https://github.com/JACoders/OpenJK into japro	Changed registration, default, flags, module, renderer scope, handler, or gating. `codemp/client/cl_console.cpp`	`medium`
`2017-08-31`	OpenJK	`913e3cc57ec7` Merge branch ‘master’ of https://github.com/JACoders/OpenJK.git	Changed registration, default, flags, module, renderer scope, handler, or gating. `codemp/client/cl_console.cpp`	`medium`

Evidence

registration: codemp/client/cl_console.cpp:658 (Cvar_Get)
behavior: codemp/client/cl_console.cpp:1060

Generated from source commit c722804317d7 on 2026-09-28. Anything merged after that is not reflected here.