Simplified WebGLExtensions.

src/renderers/webgl/WebGLExtensions.js

@@ -13,18 +13,6 @@ THREE.WebGLExtensions = function ( gl ) {
 		var extension;
 
 		switch ( name ) {
-		
-			case 'OES_texture_float':
-				extension = gl.getExtension( 'OES_texture_float' );
-				break;
-
-			case 'OES_texture_float_linear':
-				extension = gl.getExtension( 'OES_texture_float_linear' );
-				break;
-
-			case 'OES_standard_derivatives':
-				extension = gl.getExtension( 'OES_standard_derivatives' );
-				break;
 
 			case 'EXT_texture_filter_anisotropic':
 				extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
@@ -38,17 +26,8 @@ THREE.WebGLExtensions = function ( gl ) {
 				extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
 				break;
 
-			case 'OES_element_index_uint':
-				extension = gl.getExtension( 'OES_element_index_uint' );
-				break;
-
-			case 'EXT_blend_minmax':
-				extension = gl.getExtension( 'EXT_blend_minmax' );
-				break;
-
-			case 'EXT_frag_depth':
-				extension = gl.getExtension( 'EXT_frag_depth' );
-				break;
+			default:
+				extension = gl.getExtension( name );
 
 		}