fix side by side texture

src/Helpers/videoDome.ts

@@ -12,6 +12,7 @@ import { Observer } from "../Misc/observable";
 import { Vector3 } from '../Maths/math.vector';
 import { Axis } from '../Maths/math';
 import { SphereBuilder } from '../Meshes/Builders/sphereBuilder';
+import { Material } from "../Materials/material";
 
 declare type Camera = import("../Cameras/camera").Camera;
 
@@ -227,14 +228,16 @@ export class VideoDome extends TransformNode {
         switch (value) {
             case VideoDome.MODE_SIDEBYSIDE:
                 // in half-dome mode the uScale should be double of 360 videos
-                this._videoTexture.uScale = this._halfDome ? 1 : 0.5;
+                // Use 0.99999 to boost perf by not switching program
+                this._videoTexture.uScale = this._halfDome ? 0.99999 : 0.5;
                 this._onBeforeCameraRenderObserver = this._scene.onBeforeCameraRenderObservable.add((camera) => {
                     this._videoTexture.uOffset = camera.isRightCamera ? 0.5 : 0.0;
                 });
                 break;
             case VideoDome.MODE_TOPBOTTOM:
                 // in half-dome mode the vScale should be double of 360 videos
-                this._videoTexture.vScale = this._halfDome ? 1 : 0.5;
+                // Use 0.99999 to boost perf by not switching program
+                this._videoTexture.vScale = this._halfDome ? 0.99999 : 0.5;
                 this._onBeforeCameraRenderObserver = this._scene.onBeforeCameraRenderObservable.add((camera) => {
                     this._videoTexture.vOffset = camera.isRightCamera ? 0.5 : 0.0;
                 });

src/Materials/Background/backgroundMaterial.ts

@@ -1144,6 +1144,27 @@ export class BackgroundMaterial extends PushMaterial {
     }
 
     /**
+     * Checks to see if a texture is used in the material.
+     * @param texture - Base texture to use.
+     * @returns - Boolean specifying if a texture is used in the material.
+     */
+    public hasTexture(texture: BaseTexture): boolean {
+        if (super.hasTexture(texture)) {
+            return true;
+        }
+
+        if (this._reflectionTexture === texture) {
+            return true;
+        }
+
+        if (this._diffuseTexture === texture) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
      * Dispose the material.
      * @param forceDisposeEffect Force disposal of the associated effect.
      * @param forceDisposeTextures Force disposal of the associated textures.