`r_ext_multisample_default_fb`

rend2

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

Engine-managed. The game maintains this value itself, so it is not a setting to change by hand: it is read-only after registration (CVAR_ROM).

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

At a glance

Field	Value
Default	`1`
Value type	`bool`
Restart	No latch flag is registered.
Manually settable	No; the game writes this value.
Cheat protected	No
Network scope	`client-only`: Local to the client/UI/renderer.
Category	Graphics & rendering
Feature family	Renderer extensions
Module	`engine-shared`
Renderer	All / not renderer-specific
Derivation	`code-trace`
Confidence	`medium`
Added	2025-04-15 in `c98ecf977` needs review (how to compare this against your build)
In-game xdocs	No
In-game menu	No

Values

Value	Meaning	Evidence
`0`	Disabled.	shared/sdl/sdl_window.cpp:475
`1`	Enabled.	shared/sdl/sdl_window.cpp:475

Flags

CVAR_ROM: read-only after registration

Provenance

Origin: rend2

Ultimate-origin introduction: 6e3d3eaa047c in rend2 (content authored 2025-02-10, integrated 2025-02-10)
TaystJK integration evidence: c98ecf977bd3
Origin pull request: #217
Upstream registration evidence: shared/sdl/sdl_window.cpp:759
Attribution method: squash-feature-group-explicit-credit
Attribution confidence: medium
Notes: The identifier’s single-prefix squash feature group explicitly credits rend2.

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
rend2	`2025-02-10`	—	`2025-02-10`	`6e3d3eaa047c`	Ultimate origin
TaystJK	`2025-04-15`	2025-04-07	`2025-04-15`	`c98ecf977bd3`	Other project appearance
jaPRO	`2025-04-15`	—	`2025-04-15`	`c98ecf977bd3`	Other project appearance
NewJK / NewMod	`2026-08-09`	—	`2026-08-09`	`686cbf9b649b`	Other project appearance

Evidence

registration: shared/sdl/sdl_window.cpp:817 (Cvar_Get)
behavior: shared/sdl/sdl_window.cpp:475
behavior: codemp/rd-rend2/tr_init.cpp:1498
behavior: codemp/rd-vanilla/tr_init.cpp:1640

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