网上有很多，但大多使用Camera.RenderToCubemap接口，不能满足需求。

 

写了段代码可以载入Texture2D生成Cubemap(在Editor下运行):

/// 
/// Array order [Px, Py, Pz, Nx, Ny, Nz](Execute in editor)/// 
public static Cubemap BuildCubemap(Texture2D[] texs){    var p_x = texs[0];    var p_y = texs[1];    var p_z = texs[2];    var n_x = texs[3];    var n_y = texs[4];    var n_z = texs[5];    if (p_x.width != p_x.height) throw new System.Exception("Create Error! width != height");    var textureArr = new Texture2D[] { p_x, p_y, p_z, n_x, n_y, n_z };    for (int i = 0; i < textureArr.Length; i++)    {        var item = textureArr[i];        var path = AssetDatabase.GetAssetPath(item);        var textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;        textureImporter.textureFormat = TextureImporterFormat.RGB24;        textureImporter.isReadable = true;        textureImporter.SaveAndReimport();        textureArr[i] = AssetDatabase.LoadAssetAtPath
     
      (path);    }    var cubemap = new Cubemap(p_x.width, TextureFormat.RGB24, false);    //Set CubemapFace.(force fix texture format question).    cubemap.SetPixels(textureArr[0].GetPixels().Reverse().ToArray(), CubemapFace.PositiveX);    cubemap.SetPixels(textureArr[1].GetPixels().Reverse().ToArray(), CubemapFace.PositiveY);    cubemap.SetPixels(textureArr[2].GetPixels().Reverse().ToArray(), CubemapFace.PositiveZ);    cubemap.SetPixels(textureArr[3].GetPixels().Reverse().ToArray(), CubemapFace.NegativeX);    cubemap.SetPixels(textureArr[4].GetPixels().Reverse().ToArray(), CubemapFace.NegativeY);    cubemap.SetPixels(textureArr[5].GetPixels().Reverse().ToArray(), CubemapFace.NegativeZ);    cubemap.Apply();    return cubemap;}
     

 

 

生成结果：