Updated builds.

build/three.module.js

@@ -2474,7 +2474,7 @@ class Texture extends EventDispatcher {
 
 }
 
-Texture.DEFAULT_IMAGE = undefined;
+Texture.DEFAULT_IMAGE = null;
 Texture.DEFAULT_MAPPING = UVMapping;
 
 Texture.prototype.isTexture = true;
@@ -18663,7 +18663,7 @@ function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
 			( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',
 
 			parameters.dithering ? '#define DITHERING' : '',
-			parameters.transparent ? '' : '#define OPAQUE',
+			parameters.opaque ? '#define OPAQUE' : '',
 
 			ShaderChunk[ 'encodings_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below
 			getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),
@@ -19165,7 +19165,7 @@ function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities
 			specularIntensityMap: !! material.specularIntensityMap,
 			specularColorMap: !! material.specularColorMap,
 
-			transparent: material.transparent,
+			opaque: material.transparent === false && material.blending === NormalBlending,
 
 			alphaMap: !! material.alphaMap,
 			alphaTest: useAlphaTest,
@@ -19435,7 +19435,7 @@ function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities
 			_programLayers.enable( 21 );
 		if ( parameters.decodeVideoTexture )
 			_programLayers.enable( 22 );
-		if ( parameters.transparent )
+		if ( parameters.opaque )
 			_programLayers.enable( 23 );
 
 		array.push( _programLayers.mask );
@@ -22601,9 +22601,9 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 			const image = texture.image;
 
-			if ( image === undefined ) {
+			if ( image === null ) {
 
-				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined' );
+				console.warn( 'THREE.WebGLRenderer: Texture marked for update but no image data found.' );
 
 			} else if ( image.complete === false ) {