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92 lines
2.5 KiB
Plaintext
92 lines
2.5 KiB
Plaintext
meta:
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id: tex
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title: Texture Data File
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application: LEGO Island
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file-extension: tex
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license: CC0-1.0
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endian: le
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doc: |
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Texture data format for LEGO Island (1997). Contains one or more named
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textures with 8-bit indexed color image data.
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Texture data is embedded in SI (Interleaf) container files and parsed by
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LegoTexturePresenter::Read(). Each texture consists of a length-prefixed
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name followed by image data with a color palette and pixel indices.
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The image format is shared with the world database (world.wdb) texture
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data, using the same LegoImage and LegoPaletteEntry serialization.
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File structure:
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1. Texture count
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2. Named texture entries - name + palette + pixel data
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seq:
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- id: num_textures
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type: u4
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doc: Number of textures in this file.
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- id: textures
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type: named_texture
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repeat: expr
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repeat-expr: num_textures
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doc: Array of named textures.
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types:
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named_texture:
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doc: |
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A named texture with 8-bit indexed color image data.
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seq:
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- id: name_length
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type: u4
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doc: Length of the texture name buffer in bytes.
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- id: name
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type: str
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size: name_length
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encoding: ASCII
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terminator: 0
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doc: |
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Texture name (e.g., "dbfrfn.gif"). The name is a null-terminated
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C string within the allocated buffer. Bytes after the null
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terminator are unused padding and consumed but not included
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in the string value.
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- id: image
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type: image
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doc: The texture image data.
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image:
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doc: |
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An 8-bit indexed color image with palette. Parsed by LegoImage::Read().
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seq:
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- id: width
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type: u4
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doc: Image width in pixels.
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- id: height
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type: u4
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doc: Image height in pixels.
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- id: palette_size
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type: u4
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doc: Number of entries in the color palette (max 256).
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- id: palette
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type: palette_entry
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repeat: expr
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repeat-expr: palette_size
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doc: Color palette entries.
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- id: pixels
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size: width * height
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doc: |
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Pixel data as palette indices. Each byte is an index into
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the palette array.
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palette_entry:
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doc: RGB color palette entry. Parsed by LegoPaletteEntry::Read().
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seq:
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- id: red
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type: u1
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doc: Red component (0-255).
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- id: green
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type: u1
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doc: Green component (0-255).
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- id: blue
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type: u1
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doc: Blue component (0-255).
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