`r_ext_multisample`

OpenJK

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

Disable/enable framebuffer MSAA

At a glance

Field	Value
Category	Graphics & rendering
Feature family	Renderer extensions
Module	`renderer`
Also registered in	`renderer`, `engine-shared`
Renderer	`rd-rend2`, `rd-vulkan`
Network scope	`client-only` — Local to the client/UI/renderer.
Derivation	`documented`
Confidence	`medium`
In-game xdocs	No
In-game menu	Yes — ingame_setup.menu:1480, setup.menu:1383
Default	`0`
Value type	`bitmask`
Restart	Yes; the value is latched.
Cheat protected	No

Values

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

Enforced ranges

0 through 64 (integer; Cvar_CheckRange) — codemp/rd-vulkan/tr_init.cpp:921

Flags

CVAR_ARCHIVE — saved to the user configuration
CVAR_ARCHIVE_ND — saved to configuration without marking the cvar as user-created
CVAR_LATCH — latched until the relevant subsystem or map is restarted

Registration-specific defaults

Default	Module	Renderer	Compile condition
`0`	`engine-shared`	`—`	`always`
`0`	`renderer`	`rd-rend2`	`always`
`0`	`renderer`	`rd-vulkan`	`always`

Provenance

Origin: OpenJK

Ultimate-origin introduction: a7c43677a2bb in OpenJK (content authored 2015-01-10, integrated 2015-02-07)
Upstream registration evidence: codemp/rd-rend2/tr_init.cpp:1439
Attribution method: shared-earliest-commit-lineage-order
Attribution confidence: medium
Notes: The earliest authored/submitted introduction is shared by openjk, eternaljk, rend2, taystjk, japro, newjk, vulkan; 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	`2015-01-10`	—	`2015-02-07`	`a7c43677a2bb`	Ultimate origin
EternalJK	`2015-01-10`	—	`2015-02-07`	`a7c43677a2bb`	Shared integration commit
rend2	`2015-01-10`	—	`2015-02-07`	`a7c43677a2bb`	Shared integration commit
TaystJK	`2015-01-10`	—	`2015-02-07`	`a7c43677a2bb`	Shared integration commit
jaPRO	`2015-01-10`	—	`2015-02-07`	`a7c43677a2bb`	Shared integration commit
NewJK / NewMod	`2015-01-10`	—	`2015-02-07`	`a7c43677a2bb`	Shared integration commit
Vulkan	`2015-01-10`	—	`2015-02-07`	`a7c43677a2bb`	Shared integration commit
JK2MV	`2016-03-25`	—	`2016-03-28`	`59313f7414a1`	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
`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. `shared/sdl/sdl_window.cpp`	`medium`
`2021-05-25`	Vulkan	`c4a9c87ef0e3` Added vulkan renderer	Changed registration, default, flags, module, renderer scope, handler, or gating; and an exact bound cvar-variable reference. `codemp/rd-vulkan/tr_init.cpp`, `codemp/rd-vulkan/tr_local.h`, `codemp/rd-vulkan/vk_init.cpp`	`high`
`2022-02-14`	TaystJK	`507a46dfc17d` Collection of code cleanup and refactoring. Plus recent quake3e changes	Changed an exact bound cvar-variable reference. `codemp/rd-vulkan/vk_init.cpp`	`medium`
`2023-10-03`	TaystJK	`86c0756385ef` · PR #12 Rend2 (#12)	Changed registration, default, flags, module, renderer scope, handler, or gating. `codemp/rd-rend2/tr_init.cpp`	`medium`
`2024-02-03`	TaystJK	`0c789787f79c` · PR #110 Rend2 updates (#110)	Changed an exact bound cvar-variable reference. `shared/rd-rend2/tr_local.h`	`medium`
`2025-04-15`	rend2	`c98ecf977bd3` · PR #217 Rend2 update (#217)	Changed an exact bound cvar-variable reference. `shared/rd-rend2/tr_local.h`	`medium`

Evidence

registration: codemp/rd-rend2/tr_init.cpp:1496 (Cvar_Get)
registration: codemp/rd-vulkan/tr_init.cpp:920 (Cvar_Get)
registration: shared/sdl/sdl_window.cpp:816 (Cvar_Get)
behavior: codemp/rd-vulkan/vk_init.cpp:518
behavior: codemp/rd-vulkan/vk_init.cpp:519
behavior: codemp/rd-vulkan/vk_init.cpp:527
behavior: shared/sdl/sdl_window.cpp:474
behavior: codemp/rd-vulkan/tr_init.cpp:921