Added compression object for future texture compression support.

Author: photonstorm

CHANGELOG.md

@@ -8,11 +8,13 @@
 
 * WebGLRenderer.config has a new property `maxTextures` which is derived from `gl.MAX_TEXTURE_IMAGE_UNITS`, you can get it via the new method `getMaxTextures()`.
 * WebGLRenderer.config has a new property `maxTextureSize` which is derived from `gl.MAX_TEXTURE_SIZE`, you can get it via the new method `getMaxTextureSize()`
+* WebGLRenderer has a new property `compression` which holds the browser / devices compressed texture support gl extensions, which is populated during `init`.
 
 ### Bug Fixes
 
 * The Script File type in the Loader didn't create itself correctly as it was missing an argument (thanks @TadejZupancic)
 * The Plugin File type in the Loader didn't create itself correctly as it was missing an argument.
+* WebAudioSoundManager.unlock will now check if `document.body` is available before setting the listeners on it. Fixes old versions of Firefox, apparently. #3649 (thanks @squilibob)
 
 ### Examples, Documentation and TypeScript
 

src/renderer/webgl/WebGLRenderer.js

@@ -390,6 +390,19 @@ var WebGLRenderer = new Class({
          */
         this.glFormats = [];
 
+        /**
+         * Stores the supported WebGL texture compression formats.
+         *
+         * @name Phaser.Renderer.WebGL.WebGLRenderer#compression
+         * @type {array}
+         * @since 3.8.0
+         */
+        this.compression = {
+            ETC1: false,
+            PVRTC: false,
+            S3TC: false
+        };
+
         this.init(this.config);
     },
 
@@ -434,7 +447,7 @@ var WebGLRenderer = new Class({
         this.glFormats[4] = gl.FLOAT;
 
         // Load supported extensions
-        this.supportedExtensions = gl.getSupportedExtensions();
+        var exts = gl.getSupportedExtensions();
 
         var config = this.config;
 
@@ -448,6 +461,15 @@ var WebGLRenderer = new Class({
             config.maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);
         }
 
+        var extString = 'WEBGL_compressed_texture_'
+        var wkExtString = 'WEBKIT_' + extString;
+
+        this.compression.ETC1 = gl.getExtension(extString + 'etc1') || gl.getExtension(wkExtString + 'etc1');
+        this.compression.PVRTC = gl.getExtension(extString + 'pvrtc') || gl.getExtension(wkExtString + 'pvrtc');
+        this.compression.S3TC = gl.getExtension(extString + 's3tc') || gl.getExtension(wkExtString + 's3tc');
+        
+        this.supportedExtensions = exts;
+
         // Setup initial WebGL state
         gl.disable(gl.DEPTH_TEST);
         gl.disable(gl.CULL_FACE);