lowlines

Nitro Texture (NSBTX)

Category: Nintendo DS

Description: Common texture format used in Nintendo DS games.

Author: lowlines

Filename: btx0.xml

Size: 5.76 KB

Date Modified: 07 November 2019

• Nitro 3D Header

  • Type		Offset	Size	Value	Description
    Magic Stamp		0x0000	4	0x42545830	Stamp (BTX0) "Basic Texture".
    Constant		0x0004	4	0x0001FEFF
    File Size		0x0008	4
    Header Size		0x000C	2	16
    # Sections		0x000E	2	1
    Section Offset		0x0010	4		Repeats * Number of Sections.

• Texture Section (TEX0)
  • Main Header

    • Type		Offset	Size	Value	Description
      Magic Stamp		0x0000	4	0x54455830	Stamp (TEX0) "Texture".
      Section Size		0x0004	4
      Padding		0x0008	4	0x0
      Texture Data Size		0x000C	2		shift << 3
      Texture Info Offset		0x000E	2	0x3C
      Padding		0x0010	4	0x0
      Texture Data Offset		0x0014	4
      Padding		0x0018	4	0x0
      Compressed Texture Data Size		0x001C	2		shift << 3
      Compressed Texture Info Offset		0x001E	2	0x3C
      Padding		0x0020	4	0x0
      Compressed Texture Data Offset		0x0024	4
      Compressed Texture Info Data Offset		0x0028	4
      Padding		0x002C	4	0x0
      Palette Data Size		0x0030	4		shift << 3
      Palette Info Offset		0x0034	4
      Palette Data Offset		0x0038	4

  • Texture Info Section

    • Type		Offset	Size	Value	Description
      See 3D Info Structure
      Texture Offset		0x0000	2		shift << 3, relative to start of Texture Data
      Parameters		0x0002	2		Format is (xxCFFFHHHWWWxxxx) C = Palette ID F = Format (0-7) H = Height (8 << Height) W = Width (8 << Width) To Calculate the Data Size of a Texture: Bit Depth = <0, 8, 2, 4, 8, 2, 8, 16> Width * Height * BitDepth / 8
      Width		0x0004	1		Should match W << 3
      Unknown		0x0005	1	0x00 or 0x80
      Height?		0x0006	1	0, 1, 2, 4, 8
      Unknown		0x0007	1	0x80

  • Palette Info Section

    • Type		Offset	Size	Value	Description
      See 3D Info Structure
      Palette Offset		0x0000	2		shift << 3, relative to start of Palette Data
      Unknown		0x0002	2	0 or 1

  • Texture Data Block
  • Compressed Texture Data Block
  • Compressed Texture Info Data Block
  • Palette Data Block
• 3D Info Structure (Used by Info Sections)

  • Type		Offset	Size	Value	Description
    Dummy		0x0000	1	0x0
    # Objects		0x0001	1
    Section Size		0x0002	2

  • Unknown Block

    • Type		Offset	Size	Value	Description
      Header Size		0x0000	2	0x8
      Section Size		0x0002	2
      Constant		0x0004	4	0x0000017F
      Data (Repeats * Number of Objects)
      Unknown		0x0000	2
      Unknown		0x0002	2

  • Info Block

    • Type		Offset	Size	Value	Description
      Header Size		0x0000	2	0x8
      Data Size		0x0002	2
      Data (Repeats * Number of Objects)
      Info Data		0x0004	-		See each section for details on the format.

  • Name Block

    • Type		Offset	Size	Value	Description
      Name		0x0000	16		Repeats * Number of Objects