- Qt 6.7
- Qt Quick 3D
- QML Types
- QtQuick3D.Helpers
- ProceduralTextureData
- Qt Quick 3D | Commercial or GPLv3

# ProceduralTextureData QML Type

Allows creation and population of TextureData from QML. More...

Import Statement: | import QtQuick3D.Helpers
Since: | Qt 6.6
Inherits: | TextureData

- List of all members, including inherited members

## Properties

- depth : int
- format : enumeration
- hasTransparency : bool
- height : int
- textureData : ArrayBuffer
- width : int

## Detailed Description

ProceduralTextureData is a helper type that allows creation of TextureData from QML. The TextureData component is Abstract, and is usually created from C++. With ProceduralTextureData, it is possible to populate a TextureData from QML.

     ProceduralTextureData {
         id: dynamicTextureData
         property color color1: "red"
         property color color2: "black"
         width: 32
         height: 32
         hasTransparency: false
         format: TextureData.RGBA8
         textureData: generateTextureData(color1, color2)

         function generateTextureData(newColor1: color, newColor2 : color) : ArrayBuffer {
             let dataBuffer = new ArrayBuffer(width * height * 4)
             let data = new Uint8Array(dataBuffer)
             // Create a checkered pattern using newColor1 and newColor2
             for (let x = 0; x < width; x++) {
                 for (let y = 0; y < height; y++) {
                     let index = (x + y * width) * 4
                     let color = (x % 2 === y % 2) ? newColor1 : newColor2
                     data[index + 0] = color.r * 255
                     data[index + 1] = color.g * 255
                     data[index + 2] = color.b * 255
                     data[index + 3] = 255
                 }
             }
             return dataBuffer
         }
     }

In the above code snippet, the function generateTextureData is used to generate a checkerboard pattern using the two colors color1 and color2. By filling an ArrayBuffer with the generated data, the textureData property of the TextureData is populated.

## Property Documentation

depth : int `[default: 0]`

This property holds the depth of the texture data in pixels. Setting the depth above 0 means that the texture is handled as a 3D texture.

format : enumeration `[default: TextureData.RGBA8]`

This property holds the format of the texture data.

Constant | Description
--- | ---
`TexureData.None` | The color format is not defined
`TexureData.RGBA8` | The color format is considered as 8-bit integer in R, G, B and alpha channels.
`TexureData.RGBA16F` | The color format is considered as 16-bit float in R,G,B and alpha channels.
`TexureData.RGBA32F` | The color format is considered as 32-bit float in R, G, B and alpha channels.
`TexureData.RGBE8` | The color format is considered as 8-bit mantissa in the R, G, and B channels and 8-bit shared exponent.
`TexureData.R8` | The color format is considered as 8-bit integer in R channel.
`TexureData.R16` | The color format is considered as 16-bit integer in R channel.
`TexureData.R16F` | The color format is considered as 16-bit float in R channel.
`TexureData.R32F` | The color format is considered as 32-bit float R channel.
`TexureData.BC1` | The color format is considered as BC1 compressed format with R, G, B, and alpha channels.
`TexureData.BC2` | The color format is considered as BC2 compressed format with R, G, B, and alpha channels.
`TexureData.BC3` | The color format is considered as BC3 compressed format with R, G, B, and alpha channels.
`TexureData.BC4` | The color format is considered as BC4 compressed format with one color channel.
`TexureData.BC5` | The color format is considered as BC5 compressed format with two color channels.
`TexureData.BC6H` | The color format is considered as BC6H compressed format with three high dynamic range color channels.
`TexureData.BC7` | The color format is considered as BC7 compressed format with R, G, B, and alpha channels.
`TexureData.DXT1_RGBA` | The color format is considered as DXT1 compressed format with R, G, B and alpha channels.
`TexureData.DXT1_RGB` | The color format is considered as DXT1 compressed format with R, G and B channels.
`TexureData.DXT3_RGBA` | The color format is considered as DXT3 compressed format with R, G, B and alpha channels.
`TexureData.DXT5_RGBA` | The color format is considered as DXT5 compressed format with R, G, B and alpha channels.
`TexureData.ETC2_RGB8` | The color format is considered as ETC2 compressed format for RGB888 data
`TexureData.ETC2_RGB8A1` | The color format is considered as ETC2 compressed format for RGBA data where alpha is 1-bit.
`TexureData.ETC2_RGBA8` | The color format is considered as ETC2 compressed format with RGBA8888 data.
`TexureData.ASTC_4x4` | The color format is considered as ASTC compressed format with 4x4 block footprint.
`TexureData.ASTC_5x4` | The color format is considered as ASTC compressed format with 5x4 block footprint.
`TexureData.ASTC_5x5` | The color format is considered as ASTC compressed format with 5x5 block footprint.
`TexureData.ASTC_6x5` | The color format is considered as ASTC compressed format with 6x5 block footprint.
`TexureData.ASTC_6x6` | The color format is considered as ASTC compressed format with 6x6 block footprint.
`TexureData.ASTC_8x5` | The color format is considered as ASTC compressed format with 8x5 block footprint.
`TexureData.ASTC_8x6` | The color format is considered as ASTC compressed format with 8x6 block footprint.
`TexureData.ASTC_8x8` | The color format is considered as ASTC compressed format with 8x8 block footprint.
`TexureData.ASTC_10x5` | The color format is considered as ASTC compressed format with 10x5 block footprint.
`TexureData.ASTC_10x6` | The color format is considered as ASTC compressed format with 10x6 block footprint.
`TexureData.ASTC_10x8` | The color format is considered as ASTC compressed format with 10x8 block footprint.
`TexureData.ASTC_10x10` | The color format is considered as ASTC compressed format with 10x10 block footprint.
`TexureData.ASTC_12x10` | The color format is considered as ASTC compressed format with 12x10 block footprint.
`TexureData.ASTC_12x12` | The color format is considered as ASTC compressed format with 12x12 block footprint.

Note: With the exception of `TexureData.RGBA8`, not every format is supported at runtime as this depends on which backend is being used as well which hardware is being used.

Note: `TexureData.RGBE` is internally represented as an `TexureData.RGBA8` but is interpreted as described when used as a lightProbe or skybox texture.

Note: Using the value `TexureData.None` will assume the default value of `TexureData.RGBA8`

hasTransparency : bool

This property holds whether the texture data has transparency.

height : int `[default: 0]`

This property holds the height of the texture data in pixels.

textureData : ArrayBuffer

This property holds the texture data.

width : int `[default: 0]`

This property holds the width of the texture data in pixels.