Phaser.Scene.renderer is a new property available in every Phaser.Scene that gives you a reference to the renderer, either Canvas or WebGL.

Author: photonstorm

src/plugins/DefaultPlugins.js

@@ -31,7 +31,8 @@ var DefaultPlugins = {
         'registry',
         'scale',
         'sound',
-        'textures'
+        'textures',
+        'renderer'
 
     ],
 

src/scene/Scene.js

@@ -269,6 +269,15 @@ var Scene = new Class({
          * @since 3.0.0
          */
         this.plugins;
+
+        /**
+         * A reference to the renderer instance Phaser is using, either Canvas or WebGL.
+         *
+         * @name Phaser.Scene#renderer
+         * @type {(Phaser.Renderer.Canvas.CanvasRenderer|Phaser.Renderer.WebGL.WebGLRenderer)}
+         * @since 3.50.0
+         */
+        this.renderer;
     },
 
     /**