add internal texture to texture cache when creating a EnvironmentBRDFTexture for the scene

dist/preview release/what's new.md

@@ -50,5 +50,6 @@
 - Runtime animation `goToFrame` when going back in time now correctly triggers future events when reached ([zakhenry](https://github.com/zakhenry))
 - Fixed bug in Ray.intersectsTriangle where the barycentric coordinates `bu` and `bv` being returned is actually `bv` and `bw`. ([bghgary](https://github.com/bghgary))
 - Do not call onError when creating a texture when falling back to another loader ([TrevorDev](https://github.com/TrevorDev))
+- Context loss should not cause PBR materials to render black ([TrevorDev](https://github.com/TrevorDev))
 
 ## Breaking changes

src/Materials/Textures/texture.ts

@@ -701,7 +701,9 @@ export class Texture extends BaseTexture {
      */
     public static CreateFromBase64String(data: string, name: string, scene: Scene, noMipmap?: boolean, invertY?: boolean, samplingMode: number = Texture.TRILINEAR_SAMPLINGMODE,
         onLoad: Nullable<() => void> = null, onError: Nullable<() => void> = null, format: number = Constants.TEXTUREFORMAT_RGBA): Texture {
-        return new Texture("data:" + name, scene, noMipmap, invertY, samplingMode, onLoad, onError, data, false, format);
+        var texture = new Texture("data:" + name, scene, noMipmap, invertY, samplingMode, onLoad, onError, data, false, format);
+        scene.getEngine()._internalTexturesCache.push(texture.getInternalTexture()!);
+        return texture;
     }
 
     /**