Version: 2017.2
public Rect[] PackTextures (Texture2D[] textures, int padding, int maximumAtlasSize= 2048, bool makeNoLongerReadable= false);


textures アトラス内でパックされたテクスチャの配列
padding パックされたテクスチャ間のパディングピクセル数。
maximumAtlasSize 結果のテクスチャの最大サイズ
makeNoLongerReadable テクスチャをあらかじめ読みやすくマークしておくかどうか


Rect[] アトラス内にある各テクスチャの UV 座標を含む長方形の配列、パッキングに失敗した場合は null。



This function will replace the current texture with the atlas made from the supplied textures. The size, format and mipmaps of any of the textures can change after packing.

The resulting texture atlas will be as large as needed to fit all input textures but only up to maximumAtlasSize in each dimension. If the input textures can't all fit into a texture atlas of the desired size then they will be scaled down to fit.

The atlas will have DXT1 format if all input textures are DXT1 compressed. If all input textures are compressed in DXT1 or DXT5 formats then the atlas will be in DXT5 format. If any input texture is not compressed then the atlas will be in RGBA32 uncompressed format.


If you use non-zero padding and the atlas is compressed and has mipmaps then the lower-level mipmaps might not be exactly the same as in the original texture due to compression restrictions.

If makeNoLongerReadable is true then the texture will be marked as no longer readable and memory will be freed after uploading to the GPU. By default makeNoLongerReadable is set to false.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Texture2D[] atlasTextures; public Rect[] rects; void Start() { Texture2D atlas = new Texture2D(8192, 8192); rects = atlas.PackTextures(atlasTextures, 2, 8192); } }