Chunk Types

Complete reference of W3D chunk type identifiers.

Overview

Chunk types are 32-bit unsigned integers. They are organized into ranges by category.

Mesh Chunks (0x00000000 - 0x000000FF)

Container Chunks

ID	Name	Description
0x00000000	MESH	Mesh container
0x00000023	PRELIT_UNLIT	Prelit unlit data
0x00000024	PRELIT_VERTEX	Prelit vertex data
0x00000025	PRELIT_LIGHTMAP_MULTI_PASS	Lightmap multi-pass
0x00000026	PRELIT_LIGHTMAP_MULTI_TEXTURE	Lightmap multi-texture

Data Chunks

ID	Name	Description
0x00000002	VERTICES	Vertex positions (Vector3[])
0x00000003	VERTEX_NORMALS	Normal vectors (Vector3[])
0x0000000C	MESH_USER_TEXT	User text string
0x0000000D	TEXCOORDS	UV coordinates (Vector2[])
0x0000000E	VERTEX_INFLUENCES	Bone weights
0x0000001F	MESH_HEADER3	Mesh header (version 3+)
0x00000020	TRIANGLES	Triangle data
0x00000022	VERTEX_SHADE_INDICES	Shade indices
0x00000115	VERTEX_COLORS	Per-vertex colors (RGBA[])

Material Chunks

ID	Name	Description
0x00000028	MATERIAL_INFO	Material count info
0x00000029	SHADERS	Shader definitions
0x0000002A	VERTEX_MATERIALS	Material container
0x0000002B	VERTEX_MATERIAL	Single material
0x0000002C	VERTEX_MATERIAL_NAME	Material name
0x0000002D	VERTEX_MATERIAL_INFO	Material properties
0x0000002E	VERTEX_MAPPER_ARGS0	Mapper arguments 0
0x0000002F	VERTEX_MAPPER_ARGS1	Mapper arguments 1
0x00000030	TEXTURES	Texture container
0x00000031	TEXTURE	Single texture
0x00000032	TEXTURE_NAME	Texture filename
0x00000033	TEXTURE_INFO	Texture properties
0x00000038	MATERIAL_PASS	Material pass container
0x00000039	VERTEX_MATERIAL_IDS	Per-vertex material IDs
0x0000003A	SHADER_IDS	Per-vertex shader IDs
0x0000003B	DCG	Diffuse color per-vertex
0x0000003C	DIG	Diffuse illumination per-vertex
0x0000003E	SCG	Specular color per-vertex
0x00000048	TEXTURE_STAGE	Texture stage container
0x00000049	TEXTURE_IDS	Texture IDs per-vertex
0x0000004A	STAGE_TEXCOORDS	Per-stage UV coordinates
0x0000004B	PER_FACE_TEXCOORD_IDS	Per-face UV indices

Deform Chunks

ID	Name	Description
0x00000058	DEFORM	Deform container
0x00000059	DEFORM_SET	Deform set
0x0000005A	DEFORM_KEYFRAME	Deform keyframe
0x0000005B	DEFORM_DATA	Deform data

Collision Chunks

ID	Name	Description
0x00000090	AABTREE	AABB tree container
0x00000091	AABTREE_HEADER	Tree header
0x00000092	AABTREE_POLYINDICES	Polygon indices
0x00000093	AABTREE_NODES	Tree nodes

Hierarchy Chunks (0x00000100 - 0x000001FF)

ID	Name	Description
0x00000100	HIERARCHY	Hierarchy container
0x00000101	HIERARCHY_HEADER	Header (version, name, counts)
0x00000102	PIVOTS	Bone/pivot data
0x00000103	PIVOT_FIXUPS	Fixup vectors

Animation Chunks (0x00000200 - 0x000002FF)

Uncompressed Animation

ID	Name	Description
0x00000200	ANIMATION	Animation container
0x00000201	ANIMATION_HEADER	Header (name, frames, rate)
0x00000202	ANIMATION_CHANNEL	Animation channel
0x00000203	BIT_CHANNEL	Visibility channel

Compressed Animation

ID	Name	Description
0x00000280	COMPRESSED_ANIMATION	Container
0x00000281	COMPRESSED_ANIMATION_HEADER	Header
0x00000282	COMPRESSED_ANIMATION_CHANNEL	Compressed channel
0x00000283	COMPRESSED_BIT_CHANNEL	Compressed visibility

Morph Animation

ID	Name	Description
0x000002C0	MORPH_ANIMATION	Container
0x000002C1	MORPHANIM_HEADER	Header
0x000002C2	MORPHANIM_CHANNEL	Morph channel
0x000002C3	MORPHANIM_POSENAME	Pose name
0x000002C4	MORPHANIM_KEYDATA	Key data
0x000002C5	MORPHANIM_PIVOTCHANNELDATA	Pivot channel data

HTree Chunks (0x00000300 - 0x000003FF)

Legacy hierarchy format:

ID	Name	Description
0x00000300	HTREE	Container
0x00000301	HTREE_HEADER	Header
0x00000302	HTREE_PIVOTS	Pivots

Collection Chunks (0x00000400 - 0x000004FF)

ID	Name	Description
0x00000400	TEXTURE_REPLACER_INFO	Texture replacer
0x00000420	COLLECTION	Collection container
0x00000421	COLLECTION_HEADER	Header
0x00000422	COLLECTION_OBJ_NAME	Object name
0x00000423	PLACEHOLDER	Placeholder
0x00000424	TRANSFORM_NODE	Transform node

HModel Chunks (0x00000500 - 0x000005FF)

Legacy model format:

ID	Name	Description
0x00000500	HMODEL	Container
0x00000501	HMODEL_HEADER	Header
0x00000502	HMODEL_AUX_DATA	Auxiliary data
0x00000503	NODE	Node

Aggregate Chunks (0x00000600 - 0x000006FF)

ID	Name	Description
0x00000600	AGGREGATE	Container
0x00000601	AGGREGATE_HEADER	Header
0x00000602	AGGREGATE_INFO	Info
0x00000603	TEXTURE_REPLACER_INFO_V2	Replacer v2
0x00000604	AGGREGATE_CLASS_INFO	Class info

HLod Chunks (0x00000700 - 0x000007FF)

ID	Name	Description
0x00000700	HLOD	Container
0x00000701	HLOD_HEADER	Header (name, counts)
0x00000702	HLOD_LOD_ARRAY	LOD level container
0x00000703	HLOD_SUB_OBJECT_ARRAY_HEADER	Sub-object header
0x00000704	HLOD_SUB_OBJECT	Sub-object definition
0x00000705	HLOD_AGGREGATE_ARRAY	Aggregate array
0x00000706	HLOD_PROXY_ARRAY	Proxy array

Primitive Chunks (0x00000740 - 0x000007FF)

ID	Name	Description
0x00000740	BOX	Box collision
0x00000750	SPHERE	Sphere collision
0x00000760	RING	Ring primitive

Emitter Chunks (0x00000800 - 0x000008FF)

ID	Name	Description
0x00000800	EMITTER	Container
0x00000801	EMITTER_HEADER	Header
0x00000802	EMITTER_USER_DATA	User data
0x00000803	EMITTER_INFO	Info
0x00000804	EMITTER_INFOV2	Info v2
0x00000805	EMITTER_PROPS	Properties
0x00000806	EMITTER_COLOR_KEYFRAME	Color keys
0x00000807	EMITTER_OPACITY_KEYFRAME	Opacity keys
0x00000808	EMITTER_SIZE_KEYFRAME	Size keys
0x00000809	EMITTER_LINE_PROPERTIES	Line properties
0x0000080A	EMITTER_ROTATION_KEYFRAMES	Rotation keys
0x0000080B	EMITTER_FRAME_KEYFRAMES	Frame keys
0x0000080C	EMITTER_BLUR_TIME_KEYFRAMES	Blur time keys
0x0000080D	SECONDARY_EMITTER	Secondary emitter

Light Chunks (0x00000900 - 0x000009FF)

ID	Name	Description
0x00000900	LIGHT	Container
0x00000901	LIGHT_INFO	Light info
0x00000902	SPOT_LIGHT_INFO	Spotlight info
0x00000903	NEAR_ATTENUATION	Near attenuation
0x00000904	FAR_ATTENUATION	Far attenuation

Dazzle Chunks (0x00000A00 - 0x00000AFF)

ID	Name	Description
0x00000A00	DAZZLE	Container
0x00000A01	DAZZLE_NAME	Name
0x00000A02	DAZZLE_TYPENAME	Type name

Sound Chunks (0x00000B00 - 0x00000BFF)

ID	Name	Description
0x00000B00	SOUNDROBJ	Container
0x00000B01	SOUNDROBJ_HEADER	Header
0x00000B02	SOUNDROBJ_DEFINITION	Definition