Other modules

A condensed map of the remaining modules. Each is small enough that a paragraph captures the role; full source lives under modules/<name>/.

Format support — images and textures

Module	Class added	Notes
webp	ImageLoaderWebP	WebP decode/encode via libwebp
svg	ImageLoaderSVG	SVG rasterization via thorvg
jpg	ImageLoaderJPG	JPEG decode
bmp	ImageLoaderBMP	BMP decode
dds	ImageLoaderDDS	DirectDraw Surface compressed textures
hdr	ImageLoaderHDR	Radiance HDR
ktx	ImageLoaderKTX	Khronos Texture Format
tga	ImageLoaderTGA	Truevision TGA
tinyexr	ImageLoaderTinyEXR	OpenEXR decode (HDR floats)
basis_universal	Texture2D compressed via Basis Universal	Universal GPU texture compression
astcenc	ASTC compressor	High-quality ASTC encoding
betsy	GPU compute texture compressor	Compresses BC1/BC3/BC4/BC5/BC7 on the GPU
bcdec	BC* decoder	Software fallback for BC compressed textures
cvtt	High-quality BC compressor	Microsoft Convection Texture Tools
etcpak	ETC/EAC compressor	Mobile-friendly compressed formats

Format support — audio and video

Module	Adds	Notes
mp3	AudioStreamMP3	Decoder via minimp3
vorbis	AudioStreamOggVorbis	Ogg Vorbis decode
ogg	OGG container	Used by Vorbis + Theora
theora	VideoStreamTheora	Theora video decode (VideoStreamPlayer back-end)
interactive_music	AudioStreamInteractive, AudioStreamSynchronized, AudioStreamPlaybackSynchronized	Layered + clip-transition playback

Networking

Module	Class	Notes
enet	ENetConnection, ENetMultiplayerPeer, ENetPacketPeer	Reliable + unreliable UDP transport
websocket	WebSocketPeer, WebSocketMultiplayerPeer	WS / WSS via wslay
webrtc	WebRTCDataChannel, WebRTCPeerConnection, WebRTCMultiplayerPeer	WebRTC peer-to-peer
mbedtls	TLS implementation under StreamPeerTLS, Crypto, HMACContext	Built on Mbed TLS
upnp	UPNP	UPnP device discovery / NAT traversal

Scripting + tooling

Module	Adds	Notes
regex	RegEx, RegExMatch	PCRE2
jsonrpc	JSONRPC server/client utilities	Used by GDScript LSP + remote tools
objectdb_profiler	Editor profiler panel	Shows live Object instance counts (editor-only)
accesskit	AccessibilityServer integration	Cross-platform accessibility tree via AccessKit

Geometry / mesh tools

Module	Adds	Notes
meshoptimizer	Mesh post-processing	Vertex/index optimization, LOD generation
xatlas_unwrap	UV atlas baker	Used by lightmap baking + texture atlas tools
vhacd	Convex decomposition	Splits a concave mesh into convex hulls (for collision)
csg	CSGShape3D family	Constructive solid geometry — boolean operations between primitives
gridmap	GridMap node + MeshLibrary resource	3D tile-based level building
noise	FastNoiseLite, NoiseTexture2D, NoiseTexture3D	Procedural noise (Perlin, Simplex, Worley, Cellular)

Rendering and shaders

Module	Adds	Notes
lightmapper_rd	LightmapperRD	Lightmap baking via RenderingDevice (GPU path tracing)
glslang	GLSL → SPIR-V	Wraps Khronos glslang (for runtime shader compile)
raycast	Raycast (Embree-backed)	Used by lightmapper + nav baking + occlusion
visual_shader	VisualShader, VisualShaderNode* (~300+ subclasses)	Visual shader editor backend

Physics + navigation backends

Module	Adds	Notes
godot_physics_2d, godot_physics_3d	Built-in physics backends	Default 2D, fallback 3D
jolt_physics	Jolt 3D backend	Recommended 3D engine — see Jolt Physics
navigation_2d, navigation_3d	NavigationServer backends	Recast + RVO2

Text servers

Module	Adds	Notes
text_server_adv	TextServerAdvanced	Default — HarfBuzz + ICU + FreeType + msdfgen
text_server_fb	TextServerFallback	FreeType only, smaller binary

XR

Module	Adds	Notes
openxr	OpenXR runtime	Primary XR — see OpenXR
mobile_vr	MobileVRInterface	Cardboard-style stereo
webxr	WebXRInterface	Web platform only

Library wrappers

Module	Wraps	Why
freetype	FreeType library	Both text servers depend on it
msdfgen	msdfgen + msdf-atlas-gen	MSDF font generation
mbedtls	Mbed TLS	TLS for HTTP, websockets, file encryption
zip	minizip	Read + write zip archives
mono	hostfxr	C# scripting — see Mono / C#
gdscript	(in-tree)	See GDScript
gltf	(in-tree)	See glTF
fbx	converts FBX→glTF then reuses gltf	First-party FBX support

How to add one

A typical module looks like:

modules/my_module/
├── config.py        # describes options + can_build()
├── SCsub            # adds sources to the build
├── register_types.{cpp,h}   # registers classes with ClassDB
├── my_module.{cpp,h}        # the implementation
└── doc_classes/MyModule.xml # class reference

The build system picks it up automatically when module_my_module_enabled=yes (or simply when it appears under modules/). External modules are added via custom_modules=path/to/dir.