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):
/// <summary> /// Array order [Px, Py, Pz, Nx, Ny, Nz](Execute in editor) /// </summary> 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<Texture2D>(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: