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• Scripting API

Create a 2D texture array in a script

To create a 2D texture array in a script, use the Texture2DArray API.

For example:

// Set the 2D texture array parameters
int width = 32;
int height = 32;
int slices = 8;
TextureFormat format = TextureFormat.RGBA32;
bool mipChain = false;
// Create a 2D texture array with a width and height of 32 pixels, and 8 slices
Texture2DArray textureArray = new Texture2DArray(width, height, slices, format, mipChain);

Example

The following example creates an instance of the 2D texture array class, sets each slice to a different color, then saves the 2D texture array to your project as a serialized asset file.

using UnityEditor;
using UnityEngine;
public class ExampleEditorScript : MonoBehaviour
{
 [MenuItem("Examples/Create2DTextureArray")]
 static void Create2DTextureArray()
 {
 // Set the texture parameters
 int width = 32;
 int height = 32;
 int slices = 3;
 TextureFormat format = TextureFormat.RGBA32;
 bool mipChain = false;
 // Create the texture array and apply the parameters
 Texture2DArray textureArray = new Texture2DArray(width, height, slices, format, mipChain);
 // Create a 2D array of colors, to store color data for each pixel in a slice
 Color[] colors = new Color[width * height];
 // Loop through each slice
 for (int slice = 0; slice < slices; slice++)
 {
 // Generate a random color
 Color randomColor = new Color(Random.value, Random.value, Random.value, 1f);
 // Set all the pixels in the color array to the random color
 for (int color = 0; color < colors.Length; color++)
 {
 colors[color] = randomColor;
 }
 // Set the pixels of the slice to the color array
 textureArray.SetPixels(colors, slice);
 }
 // Apply the changes to the texture array by uploading the updated pixels to the GPU
 textureArray.Apply();
 // Save the texture array to your Unity project
 AssetDatabase.CreateAsset(textureArray, "Assets/Example2DTextureArray.asset");
 }
}