# Engine Caching of base64 CubeTextures **URL:** \ **Category:** Questions\ **Created:** [November 4, 2022, 4:56pm UTC](https://forum.babylonjs.com/t/engine-caching-of-base64-cubetextures/35408 "2022-11-04T16:56:37Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![JCPalmer](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/jcpalmer/32/42_2.png) [@JCPalmer](https://forum.babylonjs.com/u/JCPalmer)\ **Post date:** [November 4, 2022, 4:56pm UTC](https://forum.babylonjs.com/t/engine-caching-of-base64-cubetextures/35408/1 "2022-11-04T16:56:37Z")
In the past, I made a JS file which created PBRMaterials that I wished to assign an environment variable, in a self-contained way. I obtained a base64 representation of the .env, and loaded the env from a small class, using the string for the data as the url arg for [CreateFromPreFilteredData](https://github.com/BabylonJS/Babylon.js/blob/master/packages/dev/core/src/Materials/Textures/cubeTexture.ts#L142). ![GetEnv](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/3/b/3b6775c0c3b198fb64d352d511b1be89d0c0d197.png) Tracking thru `CreateFromPreFilteredData()`, it calls the `CubeTexture` constructor, and there the data is also used for the name. That is why I later assigned null over the `name` field. It almost seemed like a data leak. * * * Now, I have adapted this JS file to run in a mult-scene architecture (mostly, except for this). The materials using the env are re-created in each scene. If textures are cached in engine by name that would be a 600k name search, right? For many Env’s, the damage could be far worse. * * * It seems like 3D textures are treated differently than 2D. 2D textures even have a method `CreateFromBase64String()`, which takes both a data & name as arguments ```javascript /** * Creates a texture from its base 64 representation. * @param data Define the base64 payload without the data: prefix * @param name Define the name of the texture in the scene useful fo caching purpose for instance * @param scene Define the scene the texture should belong to * @param noMipmapOrOptions defines if the texture will require mip maps or not or set of all options to create the texture * @param invertY define if the texture needs to be inverted on the y axis during loading * @param samplingMode define the sampling mode we want for the texture while fetching from it (Texture.NEAREST_SAMPLINGMODE...) * @param onLoad define a callback triggered when the texture has been loaded * @param onError define a callback triggered when an error occurred during the loading session * @param format define the format of the texture we are trying to load (Engine.TEXTUREFORMAT_RGBA...) * @param creationFlags specific flags to use when creating the texture (Constants.TEXTURE_CREATIONFLAG_STORAGE for storage textures, for eg) * @returns the created texture */ public static CreateFromBase64String( data: string, name: string, scene: Scene, noMipmapOrOptions?: boolean | ITextureCreationOptions, invertY?: boolean, samplingMode: number = Texture.TRILINEAR_SAMPLINGMODE, onLoad: Nullable<() => void> = null, onError: Nullable<() => void> = null, format: number = Constants.TEXTUREFORMAT_RGBA, creationFlags?: number ): Texture { return new Texture("data:" + name, scene, noMipmapOrOptions, invertY, samplingMode, onLoad, onError, data, false, format, undefined, undefined, creationFlags); } ``` Notice that this just wrappers a constructor, and the `Texture` class has separate arguments for both, while `Texture3D`’s constructor does not. Is there any way out of this, using caching, in a multi-scene way, without using Huge names? ---
**Author:** ![JCPalmer](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/jcpalmer/32/42_2.png) [@JCPalmer](https://forum.babylonjs.com/u/JCPalmer)\ **Post date:** [November 4, 2022, 6:37pm UTC](https://forum.babylonjs.com/t/engine-caching-of-base64-cubetextures/35408/2 "2022-11-04T18:37:12Z")
Well, I found some more stuff, which seems like it might be possible. If I look at the constructor of [CubeTexture](https://github.com/BabylonJS/Babylon.js/blob/master/packages/dev/core/src/Materials/Textures/cubeTexture.ts#L173), it does not strictly take a scene as an arg. It is a Scene or **Engine**. This gets passed to super, a `BaseTexture`. Not really sure what that is, but if I pass an engine, might I be able to assign the `CubeTexture` instance from the first time to a static in my little class above, and subsequent “Gets” all return the same `CubeTexture` instance? That way I would have exactly one texture, which could be use across all engine’s scenes. If the answer to that is yes, then I would like an enhancement (I could PR it) to `CreateFromPreFilteredData` to also allow an engine for that arg. ---
**Author:** ![sebavan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/sebavan/32/57_2.png) [@sebavan](https://forum.babylonjs.com/u/sebavan)\ **Post date:** [November 4, 2022, 7:53pm UTC](https://forum.babylonjs.com/t/engine-caching-of-base64-cubetextures/35408/3 "2022-11-04T19:53:15Z")
Yup please try to create a PR for it 🙂 ---
**Author:** ![JCPalmer](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/jcpalmer/32/42_2.png) [@JCPalmer](https://forum.babylonjs.com/u/JCPalmer)\ **Post date:** [November 6, 2022, 2:31pm UTC](https://forum.babylonjs.com/t/engine-caching-of-base64-cubetextures/35408/4 "2022-11-06T14:31:31Z")
Just pecking on a tablet, waiting for the Bills game (there’s a 1hour delay today 😒). Going to look at the feasibility of giving 2d the same treatment while I am at it. I have a texture for a scene to scene wormhole as well. That mesh & material combo need to be created twice for each long distance teleport. Probably going to want to store that inside a JS as well.