Try fixing leak...

azure-pipelines.yml

@@ -67,10 +67,10 @@ jobs:
     inputs:
       workingDir: Tools/Gulp
       verbose: false
-  - script: 'gulp typescript-all'
+  - script: 'gulp typescript-all --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Typescript all'
-  - script: 'gulp tests-babylon-unit'
+  - script: 'gulp tests-babylon-unit --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Unit Tests'
   - task: PublishTestResults@2
@@ -90,14 +90,14 @@ jobs:
     inputs:
       workingDir: Tools/Gulp
       verbose: false
-  - script: 'gulp typescript-all'
+  - script: 'gulp typescript-all --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Typescript all'
   - script: |
       export DISPLAY=:99
       Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
       sleep 3 # give xvfb some time to start
-      gulp tests-validation-virtualscreenWebGL1
+      gulp tests-validation-virtualscreenWebGL1 --max-old-space-size=8192
     workingDirectory: Tools/Gulp
     displayName: 'Visual Tests'
   - task: PublishTestResults@2
@@ -117,14 +117,14 @@ jobs:
     inputs:
       workingDir: Tools/Gulp
       verbose: false
-  - script: 'gulp typescript-all'
+  - script: 'gulp typescript-all --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Typescript all'
   - script: |
       export DISPLAY=:99
       Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
       sleep 3 # give xvfb some time to start
-      gulp tests-validation-virtualscreen
+      gulp tests-validation-virtualscreen --max-old-space-size=8192
     workingDirectory: Tools/Gulp
     displayName: 'Visual Tests'
   - task: PublishTestResults@2
@@ -151,16 +151,16 @@ jobs:
     inputs:
       workingDir: Tools/Gulp
       verbose: false
-  - script: 'gulp typescript-all'
+  - script: 'gulp typescript-all --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Typescript all'
   - script: 'gulp tests-modules'
     workingDirectory: Tools/Gulp
     displayName: 'Tests modules'
-  - script: 'sudo gulp localdev-es6'
+  - script: 'sudo gulp localdev-es6 --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Npm link ES6'
-  - script: 'gulp tests-es6Modules'
+  - script: 'gulp tests-es6Modules --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Tests ES6'
   - task: PublishTestResults@2
@@ -185,10 +185,10 @@ jobs:
     inputs:
       workingDir: Tools/Gulp
       verbose: false
-  - script: 'gulp typescript-all'
+  - script: 'gulp typescript-all --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Typescript all'
-  - script: 'gulp tests-viewer-unit'
+  - script: 'gulp tests-viewer-unit --max-old-space-size=8192'
     workingDirectory: Tools/Gulp
     displayName: 'Unit Tests'
   - task: PublishTestResults@2
@@ -200,7 +200,7 @@ jobs:
       export DISPLAY=:99
       Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
       sleep 3 # give xvfb some time to start
-      gulp tests-viewer-validation-virtualscreen
+      gulp tests-viewer-validation-virtualscreen --max-old-space-size=8192
     workingDirectory: Tools/Gulp
     displayName: 'Visual Tests'
   - task: PublishTestResults@2

src/Materials/Textures/renderTargetTexture.ts

@@ -979,6 +979,10 @@ export class RenderTargetTexture extends Texture {
             }
         }
 
+        if (this.depthStencilTexture) {
+            this.getScene()!.getEngine()._releaseTexture(this.depthStencilTexture);
+        }
+
         super.dispose();
     }
 

src/Misc/environmentTextureTools.ts

@@ -563,6 +563,7 @@ export class EnvironmentTextureTools {
             // Release temp RTT.
             if (cubeRtt) {
                 engine._releaseFramebufferObjects(cubeRtt);
+                engine._releaseTexture(texture);
                 cubeRtt._swapAndDie(texture);
             }
             // Release temp Post Process.

src/scene.ts

@@ -3857,6 +3857,10 @@ export class Scene extends AbstractScene implements IAnimatable {
         this.beforeRender = null;
         this.afterRender = null;
 
+        if (EngineStore._LastCreatedScene === this) {
+            EngineStore._LastCreatedScene = null;
+        }
+
         this.skeletons = [];
         this.morphTargetManagers = [];
         this._transientComponents = [];