`r_device`

Base Jedi Academy

Select physical device to render: 0+ - use explicit device index. -1 - first discrete GPU. -2 - first integrated GPU

At a glance

Field	Value
Default	`-1`
Value type	`enum`
Restart	Yes; the value is latched.
Manually settable	Yes
Cheat protected	No
Network scope	`client-only`: Local to the client/UI/renderer.
Category	Graphics & rendering
Module	`renderer`
Renderer	`rd-vulkan`
Derivation	`documented`
Confidence	`high`
Added	2013-04-08 in `14cea1563` (how to compare this against your build)
In-game xdocs	No
In-game menu	No

Values

Value	Meaning	Evidence
`0+`	Use explicit device index.	codemp/rd-vulkan/tr_init.cpp:912
`-1`	First discrete GPU.	codemp/rd-vulkan/tr_init.cpp:912
`-2`	First integrated GPU.	codemp/rd-vulkan/tr_init.cpp:912

Enforced ranges

-2 through 8 (integer; Cvar_CheckRange). Evidence: codemp/rd-vulkan/tr_init.cpp:916

Flags

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

Provenance

Origin: Base Jedi Academy

Baseline evidence: 14cea1563762
Upstream registration evidence: code/mac/mac_glimp.c:701
Attribution method: present-in-openjk-initial-source-import
Attribution confidence: high
Notes: Identifier is present in OpenJK’s initial Raven source-import snapshot. Dated commit evidence identifies later registration changes relative to the origin snapshot.

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
`2013-04-24`	OpenJK	`f6cadd34c6ab` Merge branch ‘master’ of https://github.com/Razish/OpenJK into modrender-port	Changed registration, default, flags, module, renderer scope, handler, or gating. `code/mac/mac_glimp.c`	`high`
`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_instance.cpp`	`high`
`2022-02-16`	Vulkan	`5ce497f25666` Vulkan: linux & mac compiler warnings/errors cleanup.	Changed an exact bound cvar-variable reference. `codemp/rd-vulkan/tr_init.cpp`	`high`

Evidence

registration: codemp/rd-vulkan/tr_init.cpp:912 (Cvar_Get)
behavior: codemp/rd-vulkan/vk_instance.cpp:946
behavior: codemp/rd-vulkan/tr_init.cpp:917
behavior: codemp/rd-vulkan/tr_init.cpp:916

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