Added new Projection Update event and respond to it

src/renderer/events/PROJECTION_EVENT.js

@@ -0,0 +1,19 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2020 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * The Renderer Projection Update Event.
+ *
+ * This event is dispatched by the Phaser Renderer when the global Projection Matrix
+ * is updated.
+ *
+ * @event Phaser.Renderer.Events#PROJECTION
+ * @since 3.50.0
+ *
+ * @param {number} width - The new width of the renderer.
+ * @param {number} height - The new height of the renderer.
+ */
+module.exports = 'projection';

src/renderer/events/index.js

@@ -12,6 +12,7 @@ module.exports = {
 
     POST_RENDER: require('./POST_RENDER_EVENT'),
     PRE_RENDER: require('./PRE_RENDER_EVENT'),
+    PROJECTION: require('./PROJECTION_EVENT'),
     RENDER: require('./RENDER_EVENT'),
     RESIZE: require('./RESIZE_EVENT')
 

src/renderer/webgl/WebGLPipeline.js

@@ -466,6 +466,7 @@ var WebGLPipeline = new Class({
         renderer.on(RendererEvents.PRE_RENDER, this.onPreRender, this);
         renderer.on(RendererEvents.RENDER, this.onRender, this);
         renderer.on(RendererEvents.POST_RENDER, this.onPostRender, this);
+        renderer.on(RendererEvents.PROJECTION, this.setProjectionMatrix, this);
 
         this.emit(Events.BOOT, this);
 
@@ -2038,6 +2039,7 @@ var WebGLPipeline = new Class({
         renderer.off(RendererEvents.PRE_RENDER, this.onPreRender, this);
         renderer.off(RendererEvents.RENDER, this.onRender, this);
         renderer.off(RendererEvents.POST_RENDER, this.onPostRender, this);
+        renderer.off(RendererEvents.PROJECTION, this.setProjectionMatrix, this);
 
         this.removeAllListeners();
 

src/renderer/webgl/WebGLRenderer.js

@@ -897,6 +897,8 @@ var WebGLRenderer = new Class({
 
         this.renderTarget.bind(true, width, height);
 
+        this.emit(Events.PROJECTION, width, height);
+
         this.resetTextures();
     },
 
@@ -915,6 +917,8 @@ var WebGLRenderer = new Class({
     {
         this.renderTarget.unbind(true);
 
+        this.emit(Events.PROJECTION, this.width, this.height);
+
         return this.renderTarget;
     },