Asset Catalog Format Reference: Texture Type

A 2D texture.

Extension

.textureset

Folder Contents

Mipmaps for the different trait configurations. For information on the mipmap type, see Mipmap Type.

Contents.json File

Metadata, on-demand resource tags, texture information, and properties for the texture are shown in (Table 29-1).

**Table 29-1**Texture tags
Key	Type	Description
`info`	Dictionary	Versioning information for the asset catalog.
`author`	String	The application that authored the asset catalog.
`version`	Number	The version of the asset catalog.
`properties`	Dictionary	Properties for the texture.
`interpretation`	String	Interpret the file as an image or as data. For the values, see interpretation below.
`on-demand-resource-tags`	Array of strings	The on-demand resource tags for the texture.
`origin`	String	The origin of the coordinate system. For the values, see origin below.
`textures`	Array of dictionaries	The mipmap sets for each trait combination.
`color-space`	Slot component	The color space for the data item. For the values, see color-space in Image Set Type.
`display-gamut`	Slot component	The color gamut of the device display. For the values, see display-gamut in Image Set Type.
`filename`	String	The name of the folder containing the mipmap for the trait variation. For information on the mipmap type, see Mipmap Type.
`graphics-feature-set`	Slot component	The graphics features required for the item. For the values, see graphics-feature-set in Image Set Type.
`idiom`	Slot component	The device type for the image. For the values, see idiom in Image Set Type.
`memory`	Slot component	The memory required by the data item. For the values, see memory in Image Set Type.
`pixel-format`	String	The format of the pixels in the image. For the values, see pixel-format below.
`scale`	Slot Component	The scale of the image. For the values, see scale in Image Set Type.

Values for Enumerated Tags

interpretation

How to interpret the contents of the file (Table 29-2).

**Table 29-2**`interpretation` values
Value	Description
Tag not included	The contents of the file are an image.
`colors`	The contents of the file are an image.
`data`	The contents of the file are data such as a normal map.

memory

See memory in Image Set Type.

origin

The origin of the image coordinate system. Values are shown in (Table 29-3).

**Table 29-3**`origin` values
Value	Description
Tag not included	The coordinate system originates at the top-left.
`bottom-left`	The coordinate system originates at the bottom-left.

pixel-format

The pixel format for a texture. Values are shown in (Table 29-4).

**Table 29-4**`pixel-format` values
Value	Description
Tag not included	Format is determined automatically.
`r-8-unorm`	The pixels are in normalized 8-bit red format.
`rg-8-unorm`	The pixels are in normalized 8-bit red, green format.
`rgba-8-unorm`	The pixels are in normalized 8-bit RGB alpha format.
`rgba-8-unorm-sRGB`	The pixels are in normalized 8-bit RGB alpha format for the sRGB color space.
`r-16-float`	The pixels are in 16-bit floating point red format.
`rg-16-float`	The pixels are in 16-bit floating point red, green format.
`rgba-16-float`	The pixels are in 16-bit floating point RGB alpha format.
`rbg-10-extended-range-sRGB`	The pixels are in 10-bit extended range sRGB format.
`astc-4x4`	The pixels are in ASTC 4x4 RGB alpha format.
`astc-4x4-sRGB`	The pixels are in ASTC 4x4 sRGB format.
`astc-8x8`	The pixels are in ASTC 8x8 RGB alpha format.
`astc-8x8-sRGB`	The pixels are in ASTC 8x8 sRGB format.

scale

See scale in Image Set Type.

Sample Contents.json File

        {
   "properties" : {
       "interpretation" : "colors"
   },
  "textures" : [
    {
      "filename" : "HighFidelityLlama.mipmapset",
      "idiom" : "Universal",
      "memory" : "4GB",
      "pixel-format" : "rbg-10-extended-range-sRGB"
    },
    {
      "filename" : "LowFidelityLlama.mipmapset",
      "idiom" : "Universal",
      "memory" : "1GB",
      "pixel-format" : "rgba-8-unorm"
    }
  ]
   "info" : {
      "author" : "com.developerName",
      "version" : 1
   }
}

      

Texture Type