The textures get stretched when using an Atlas to UV map the 2D textures to the sides of a Cube

6.0.X

Cannot Reproduce

Hi, the issue reported is not a bug with the engine but the provided script is not mapping the UV's correctly. Changing the provided function as follows does resolve the problem: public static GameObject multiTextures(string sideID, string topID, string bottomID) { GameObject model = GameObject.CreatePrimitive(PrimitiveType.Cube); Material material = new Material(Shader.Find("Standard")); Texture2D side = Resources.Load<Texture2D>("Texture/Block/" + sideID); Texture2D top = Resources.Load<Texture2D>("Texture/Block/" + topID); Texture2D bottom = Resources.Load<Texture2D>("Texture/Block/" + bottomID); Texture2D textureAtlas = new Texture2D(32, 32, TextureFormat.RGB24, false); textureAtlas.filterMode = FilterMode.Point; textureAtlas.wrapMode = TextureWrapMode.Clamp; Texture2D[] textures = { side, top, bottom }; Rect[] atlasUVs = textureAtlas.PackTextures(textures, 0); byte[] bytes = textureAtlas.EncodeToPNG(); System.IO.File.WriteAllBytes(Application.dataPath + "/Resources/Texture/BlockAtlas.png", bytes); material.mainTexture = textureAtlas; material.SetFloat("_Metallic", 0); material.SetFloat("_Glossiness", 0); MeshRenderer meshRenderer = model.GetComponent<MeshRenderer>(); meshRenderer.material = material; Mesh mesh = model.GetComponent<MeshFilter>().mesh; Vector2[] UVs = new Vector2[mesh.vertices.Length]; // South (front) UVs[0] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMin); UVs[1] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMin); UVs[2] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMax); UVs[3] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMax); // Top UVs[4] = new Vector2(atlasUVs[1].xMin, atlasUVs[1].yMin); UVs[5] = new Vector2(atlasUVs[1].xMin, atlasUVs[1].yMax); UVs[8] = new Vector2(atlasUVs[1].xMax, atlasUVs[1].yMin); UVs[9] = new Vector2(atlasUVs[1].xMax, atlasUVs[1].yMax); // North (back) UVs[6] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMin); UVs[7] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMin); UVs[10] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMax); UVs[11] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMax); // Bottom UVs[15] = new Vector2(atlasUVs[2].xMin, atlasUVs[2].yMin); UVs[14] = new Vector2(atlasUVs[2].xMin, atlasUVs[2].yMax); UVs[12] = new Vector2(atlasUVs[2].xMax, atlasUVs[2].yMin); UVs[13] = new Vector2(atlasUVs[2].xMax, atlasUVs[2].yMax); // West (left) UVs[19] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMin); UVs[18] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMax); UVs[16] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMin); UVs[17] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMax); // East (right) UVs[23] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMin); UVs[22] = new Vector2(atlasUVs[0].xMin, atlasUVs[0].yMax); UVs[20] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMin); UVs[21] = new Vector2(atlasUVs[0].xMax, atlasUVs[0].yMax); mesh.uv = UVs; return model; }