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BCRES (Binary Citra RESource) is a file format used on Nintendo 3DS games, and contains model, texture and animation data.
File Format
The file starts with a header.
| Offset |
Type |
Description
|
| 0x00 |
String |
File magic. Always CGFX in ASCII.
|
| 0x04 |
UInt16 |
Byte-order-mark. FE FF for big endian, FF FE for little endian.
|
| 0x06 |
UInt16 |
Header size. Always 0x14.
|
| 0x08 |
UInt32 |
Version number of the file format.
|
| 0x0C |
UInt32 |
File size in bytes.
|
| 0x10 |
UInt16 |
Number of sections.
|
| 0x12 |
UInt16 |
Reserved
|
DATA
After the header comes the DATA section.
| Offset |
Type |
Description
|
| 0x00 |
String |
Section magic. Always DATA in ASCII.
|
| 0x04 |
UInt32 |
Section size. Also includes the data that comes after.
|
After the DATA header comes N entries of the following structure. N seems to be depending on the version number.
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Number of entries.
|
| 0x04 |
Int32 |
DICT offset.
|
DICT
A DICT (DICTionary) is used to represent named entries. It is also a binary search tree, which allows faster name look-ups.
| Offset |
Type |
Description
|
| 0x00 |
String |
Magic to identify this section. Always DICT in ASCII.
|
| 0x04 |
UInt32 |
Section size.
|
| 0x08 |
UInt32 |
N = Number of entries in this dictionary.
|
After the header structure follows N + 1 number of entries. The first entry is a dummy node which never contains any data. It is used as a reference entry. Each entry has the following structure:
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Search value.
|
| 0x04 |
UInt16 |
Left entry index.
|
| 0x06 |
UInt16 |
Right entry index.
|
| 0x08 |
Int32 |
Name offset.
|
| 0x0C |
Int32 |
Data offset.
|
CMDL
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Flags. xxxxxxxx xxxxxxxx xxxxxxxx Axxxxxxx:
- A determines if the model has bones.
|
| 0x04 |
String |
Magic. Always CMDL in ASCII.
|
| 0x08 |
UInt32 |
Revision.
|
| 0x0C |
Int32 |
Name offset.
|
| 0x10 |
UInt32 |
Number of user data.
|
| 0x14 |
Int32 |
User data DICT offset.
|
| 0x18 |
UInt32 |
Unknown.
|
| 0x1C |
UInt32 |
Flags.
|
| 0x20 |
UInt32 |
Unknown.
|
| 0x24 |
UInt32 |
Unknown.
|
| 0x28 |
UInt32 |
Unknown.
|
| 0x2C |
UInt32 |
Unknown.
|
| 0x30 |
Float[3] |
Scale affecting this model.
|
| 0x3C |
Float[3] |
Rotation affecting this model.
|
| 0x48 |
Float[3] |
Translation affecting this model.
|
| 0x54 |
Float[12] |
Local 4x3 matrix.
|
| 0x84 |
Float[12] |
World 4x3 matrix.
|
| 0xB4 |
UInt32 |
Number of meshes.
|
| 0xB8 |
Int32 |
Mesh pointer table offset. Links to a Int32[] which points to the structures.
|
| 0xBC |
UInt32 |
Number of material.
|
| 0xC0 |
Int32 |
Material DICT offset.
|
| 0xC4 |
UInt32 |
Number of Shape.
|
| 0xC8 |
Int32 |
Shape pointer table offset. Links to a Int32[] which points to the structures.
|
| 0xCC |
UInt32 |
Number of object nodes.
|
| 0xD0 |
Int32 |
Object nodes DICT offset.
|
| 0xD4 |
UInt32 |
Flags.
|
| 0xD8 |
UInt32 |
Unknown.
|
| 0xDC |
UInt32 |
Unknown.
|
| 0xE0 |
Int32 |
Bone offset. Only stored if A is 1 at 0x00.
|
Mesh
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Flags.
|
| 0x04 |
String |
Section magic. Always SOBJ in ASCII.
|
| 0x08 |
UInt32 |
Revision.
|
| 0x0C |
Int32 |
Name offset.
|
| 0x10 |
UInt32 |
Number of user data.
|
| 0x14 |
Int32 |
User data DICT offset.
|
| 0x18 |
UInt32 |
Shape index.
|
| 0x1C |
UInt32 |
Material index.
|
| 0x20 |
Int32 |
Offset to the owner model.
|
| 0x24 |
Byte |
Visible.
|
| 0x25 |
Byte |
Render priority.
|
| 0x26 |
UInt16 |
Unknown.
|
| 0x28 |
UInt16 |
Unknown.
|
| 0x2A |
? |
Unknown.
|
Material
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Flags.
|
| 0x04 |
String |
Section magic. Always MTOB in ASCII.
|
| 0x08 |
UInt32 |
Revision.
|
| 0x0C |
Int32 |
Name offset.
|
| 0x10 |
UInt32 |
Number of user data.
|
| 0x14 |
Int32 |
User data DICT offset.
|
| 0x18 |
UInt32 |
Flags. xxxxxxxx xxxxxxxx xxxxxxxx xxABCDEF:
- A determines if polygon offset is enabled.
- B enables fog.
- C enables hemi sphere pcclusion.
- D enables hemi sphere light.
- E enables vertex light.
- F enables fragment light.
|
| 0x1C |
UInt32 |
UV config.
|
| 0x20 |
UInt32 |
Unknown.
|
| 0x24 |
Material Color |
Material color.
|
| 0x100 |
Rasterization |
Rasterization.
|
| 0x114 |
Depth Operation |
Depth operation.
|
| 0x128 |
Blend Operation |
Blend operation.
|
| 0x154 |
Stencil Operation |
Stencil operation.
|
| 0x164 |
UInt32 |
Number of active texture coordinates.
|
| 0x168 |
Texture Coordinate Source |
Texture coordinate source 0
|
| 0x198 |
Texture Coordinate Source |
Texture coordinate source 1
|
| 0x1C8 |
Texture Coordinate Source |
Texture coordinate source 1
|
| 0x1F8 |
Int32[4] |
Offset to 4 texture mappers.
|
| 0x208 |
Int32 |
Shader offset.
|
| 0x20C |
Int32 |
Fragment shader offset.
|
| 0x210 |
UInt32 |
Shader program description index.
|
| 0x214 |
UInt32 |
Number of shader parameters.
|
| 0x218 |
UInt32 |
Shader parameter array offset.
|
| 0x21C |
UInt32 |
Light set index.
|
| 0x220 |
UInt32 |
Fox index.
|
| 0x224 |
UInt32 |
Shading parameter hash.
|
| 0x228 |
UInt32 |
Shader parameters hash.
|
| 0x22C |
UInt32 |
Texture coordinators hash.
|
| 0x230 |
UInt32 |
Texture samplers hash.
|
| 0x234 |
UInt32 |
Texture mappers hash.
|
| 0x238 |
UInt32 |
Material color hash.
|
| 0x23C |
UInt32 |
Rasterization hash.
|
| 0x240 |
UInt32 |
Fragment lighting hash.
|
| 0x244 |
UInt32 |
Fragment lighting table hash.
|
| 0x248 |
UInt32 |
Fragment lighting table parameters hash.
|
| 0x24C |
UInt32 |
Texture combiners hash.
|
| 0x250 |
UInt32 |
Alpha test hash.
|
| 0x254 |
UInt32 |
Hash of depth operation, blend operation and stencil operation.
|
| 0x258 |
UInt32 |
Material index.
|
Material Color
| Offset |
Type |
Description
|
| 0x00 |
Float[4][11] |
Material colors. Each color is stored as four floats in RGBA format. There are a total of 11 colors where 1 is emission, 1 is ambient, 1 is diffuse, 2 are specular and 5 are constants.
|
| 0xB0 |
Byte[4][11] |
Material colors. Each color is stored as four bytes in RGBA format. There are a total of 11 colors where 1 is emission, 1 is ambient, 1 is diffuse, 2 are specular and 5 are constants.
|
Rasterization
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Flags.
|
| 0x04 |
UInt32 |
Culling mode.
|
| 0x08 |
Float |
Polygon offset unit.
|
| 0x0C |
UInt32 |
Command 1.
|
| 0x10 |
UInt32 |
Command 2.
|
Depth Operation
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Flags. xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxAB:
- A enables death test?
- B enables mask?
|
| 0x04 |
UInt32 |
Command 1.
|
| 0x08 |
UInt32 |
Command 2.
|
| 0x0C |
UInt32 |
Command 3.
|
| 0x10 |
UInt32 |
Command 4.
|
Blend Operation
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Mode.
|
| 0x04 |
Float[4] |
Blend color stored as four floats in RGBA format.
|
| 0x14 |
UInt32 |
Command 1.
|
| 0x18 |
UInt32 |
Command 2.
|
| 0x1C |
UInt32 |
Command 3.
|
| 0x20 |
UInt32 |
Command 4.
|
| 0x24 |
UInt32 |
Command 5.
|
| 0x28 |
UInt32 |
Command 6.
|
Stencil Operation
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Command 1.
|
| 0x04 |
UInt32 |
Command 2.
|
| 0x08 |
UInt32 |
Command 3.
|
| 0x0C |
UInt32 |
Command 4.
|
Texture Coordinate Source
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Source.
|
| 0x04 |
UInt32 |
Mapping method. 0 = UV, 1 = Cube, 2 = Sphere, 3 = Projection, 4 = Shadow
|
| 0x08 |
Int32 |
Camera reference.
|
| 0x0C |
UInt32 |
Matrix mode.
|
| 0x10 |
Float[2] |
Scale.
|
| 0x18 |
Float |
Rotation.
|
| 0x1C |
Float[2] |
Translation.
|
| 0x24 |
UInt32 |
Unknown.
|
| 0x28 |
Float[12] |
Matrix 4x3.
|
Texture Mapper
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Type.
|
| 0x04 |
UInt32 |
Dynamic allocator.
|
| 0x08 |
Int32 |
TXOB offset. Links to the texture header.
|
| 0x0C |
Int32 |
Sampler offset.
|
| 0x10 |
UInt32 |
Unknown.
|
| 0x14 |
UInt16 |
Unknown.
|
| 0x16 |
UInt16 |
Unknown.
|
| 0x18 |
UInt32 |
Unknown.
|
| 0x1C |
UInt16 |
Unknown.
|
| 0x1E |
UInt16 |
Unknown.
|
| 0x20 |
UInt16 |
Height.
|
| 0x22 |
UInt16 |
Width.
|
| 0x24 |
UInt32 |
Unknown.
|
| 0x28 |
UInt32 |
Unknown.
|
| 0x2C |
UInt32 |
Unknown.
|
| 0x30 |
UInt32 |
Unknown.
|
| 0x34 |
UInt32 |
Unknown.
|
| 0x38 |
UInt32 |
Unknown.
|
| 0x3C |
UInt32 |
Unknown.
|
| 0x40 |
UInt32 |
Unknown.
|
| 0x44 |
UInt32 |
Unknown.
|
| 0x44 |
UInt32 |
The command size to send.
|
Shape
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Flags.
|
| 0x04 |
String |
Section magic. Always SOBJ in ASCII.
|
| 0x08 |
UInt32 |
Revision.
|
| 0x0C |
Int32 |
Name offset.
|
| 0x10 |
Int32 |
Number of user data.
|
| 0x14 |
Int32 |
User data DICT offset.
|
| 0x18 |
UInt32 |
Flags.
|
| 0x1C |
Int32 |
Bounding box offset.
|
| 0x20 |
Float[3] |
Unknown vector.
|
| 0x2C |
UInt32 |
Number of face groups.
|
| 0x30 |
Int32 |
Offset to the face groups.
|
| 0x34 |
UInt32 |
Unknown.
|
| 0x38 |
UInt32 |
Number of vertex buffers.
|
| 0x3C |
Int32 |
Offset to the vertex buffers.
|
| 0x40 |
UInt32 |
Unknown.
|
Vertex Buffer
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Unknown.
|
| 0x04 |
UInt32 |
Unknown.
|
| 0x08 |
UInt32 |
Unknown.
|
| 0x0C |
UInt32 |
Buffer object.
|
| 0x10 |
UInt32 |
Location flag.
|
| 0x14 |
UInt32 |
Unknown.
|
| 0x18 |
UInt32 |
Unknown.
|
| 0x1C |
UInt32 |
Location address.
|
| 0x20 |
UInt32 |
Memory area.
|
| 0x24 |
UInt32 |
Unknown.
|
| 0x28 |
UInt32 |
Number of vertex attributes.
|
| 0x2C |
UInt32 |
Vertex attributes pointer table offset. Links to a Int32[] which points to the structures.
|
Vertex Attribute
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Flags.
|
| 0x04 |
UInt32 |
Target.
|
| 0x08 |
UInt32 |
Flags.
|
| 0x0C |
UInt32 |
Buffer object.
|
| 0x10 |
UInt32 |
Location flag.
|
| 0x14 |
UInt32 |
Stream size.
|
| 0x18 |
UInt32 |
Stream offset.
|
| 0x1C |
UInt32 |
Location address.
|
| 0x20 |
UInt32 |
Memory area.
|
| 0x24 |
UInt32 |
Flags. xxxxxxxx xxxxxxxx xxxxxxxx xxxxAAAA:
- AAAA is the format of the stream.
|
| 0x28 |
UInt32 |
Unknown.
|
| 0x2C |
Float |
Scale.
|
| 0x30 |
UInt32 |
Offset.
|
Formats
| Value |
Description
|
| 0x00 |
SByte.
|
| 0x01 |
Byte.
|
| 0x02 |
Int16.
|
| 0x03 |
Float.
|
Targets
| Value |
Description.
|
| 0x00 |
Position.
|
| 0x01 |
Normal.
|
| 0x02 |
Tangent.
|
| 0x03 |
Color.
|
| 0x04 |
UV 0.
|
| 0x05 |
UV 1.
|
| 0x06 |
UV 2.
|
| 0x07 |
Bone index.
|
| 0x08 |
Bone weight.
|
| 0x09 |
User attribute 0.
|
| 0x0A |
User attribute 1.
|
| 0x0B |
User attribute 2.
|
| 0x0C |
User attribute 3.
|
| 0x0D |
User attribute 4.
|
| 0x0E |
User attribute 5.
|
| 0x0F |
User attribute 6.
|
| 0x10 |
User attribute 7.
|
| 0x11 |
User attribute 8.
|
| 0x12 |
User attribute 9.
|
| 0x13 |
User attribute 10.
|
| 0x14 |
User attribute 11.
|
| 0x15 |
Interleave.
|
| 0x16 |
Quantity.
|
Object Node
| Offset |
Type |
Description
|
| 0x00 |
Int32 |
Name offset.
|
| 0x04 |
UInt32 |
Visible.
|
TXOB
