WebGLExtensions: Add .has( extName ) method.

examples/js/loaders/BasisTextureLoader.js

@@ -67,12 +67,12 @@ THREE.BasisTextureLoader.prototype = Object.assign( Object.create( THREE.Loader.
 
 		var config = this.workerConfig;
 
-		config.astcSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_astc' );
-		config.bptcSupported = !! renderer.extensions.get( 'EXT_texture_compression_bptc' );
-		config.etcSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_etc1' );
-		config.dxtSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_s3tc' );
-		config.pvrtcSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_pvrtc' )
-			|| !! renderer.extensions.get( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
+		config.astcSupported = renderer.extensions.has( 'WEBGL_compressed_texture_astc' );
+		config.bptcSupported = renderer.extensions.has( 'EXT_texture_compression_bptc' );
+		config.etcSupported = renderer.extensions.has( 'WEBGL_compressed_texture_etc1' );
+		config.dxtSupported = renderer.extensions.has( 'WEBGL_compressed_texture_s3tc' );
+		config.pvrtcSupported = renderer.extensions.has( 'WEBGL_compressed_texture_pvrtc' )
+			|| renderer.extensions.has( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
 
 		if ( config.astcSupported ) {
 

examples/jsm/loaders/BasisTextureLoader.js

@@ -80,12 +80,12 @@ BasisTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ),
 
 		var config = this.workerConfig;
 
-		config.astcSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_astc' );
-		config.bptcSupported = !! renderer.extensions.get( 'EXT_texture_compression_bptc' );
-		config.etcSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_etc1' );
-		config.dxtSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_s3tc' );
-		config.pvrtcSupported = !! renderer.extensions.get( 'WEBGL_compressed_texture_pvrtc' )
-			|| !! renderer.extensions.get( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
+		config.astcSupported = renderer.extensions.has( 'WEBGL_compressed_texture_astc' );
+		config.bptcSupported = renderer.extensions.has( 'EXT_texture_compression_bptc' );
+		config.etcSupported = renderer.extensions.has( 'WEBGL_compressed_texture_etc1' );
+		config.dxtSupported = renderer.extensions.has( 'WEBGL_compressed_texture_s3tc' );
+		config.pvrtcSupported = renderer.extensions.has( 'WEBGL_compressed_texture_pvrtc' )
+			|| renderer.extensions.has( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
 
 		if ( config.astcSupported ) {
 

examples/webgl_loader_texture_ktx.html

@@ -47,10 +47,10 @@
 		document.body.appendChild( renderer.domElement );
 
 		var formats = {
-			astc: renderer.extensions.get( 'WEBGL_compressed_texture_astc' ),
-			etc1: renderer.extensions.get( 'WEBGL_compressed_texture_etc1' ),
-			s3tc: renderer.extensions.get( 'WEBGL_compressed_texture_s3tc' ),
-			pvrtc: renderer.extensions.get( 'WEBGL_compressed_texture_pvrtc' )
+			astc: renderer.extensions.has( 'WEBGL_compressed_texture_astc' ),
+			etc1: renderer.extensions.has( 'WEBGL_compressed_texture_etc1' ),
+			s3tc: renderer.extensions.has( 'WEBGL_compressed_texture_s3tc' ),
+			pvrtc: renderer.extensions.has( 'WEBGL_compressed_texture_pvrtc' )
 		};
 
 		camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 2000 );

src/renderers/webgl/WebGLExtensions.js

@@ -8,7 +8,7 @@ function WebGLExtensions( gl ) {
 
 	return {
 
-		get: function ( name ) {
+		has: function ( name ) {
 
 			if ( extensions[ name ] !== undefined ) {
 
@@ -41,15 +41,21 @@ function WebGLExtensions( gl ) {
 
 			}
 
-			if ( extension === null ) {
+			extensions[ name ] = extension;
+
+			return !! extension;
+
+		},
+
+		get: function ( name ) {
+
+			if ( ! this.has( name ) ) {
 
 				console.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );
 
 			}
 
-			extensions[ name ] = extension;
-
-			return extension;
+			return extensions[ name ];
 
 		}