Corrected defines for glTF loaders

examples/js/loaders/GLTFLoader.js

@@ -726,7 +726,7 @@ THREE.GLTFLoader = ( function () {
 				materialParams.vertexShader = shader.vertexShader;
 				materialParams.fragmentShader = fragmentShader;
 				materialParams.uniforms = uniforms;
-				materialParams.defines = { 'STANDARD': '' };
+				materialParams.defines = { 'PHYSICAL': '' }
 
 				materialParams.color = new THREE.Color( 1.0, 1.0, 1.0 );
 				materialParams.opacity = 1.0;

examples/jsm/loaders/GLTFLoader.js

@@ -791,7 +791,7 @@ var GLTFLoader = ( function () {
 				materialParams.vertexShader = shader.vertexShader;
 				materialParams.fragmentShader = fragmentShader;
 				materialParams.uniforms = uniforms;
-				materialParams.defines = { 'STANDARD': '' };
+				materialParams.defines = { 'PHYSICAL': '' }
 
 				materialParams.color = new Color( 1.0, 1.0, 1.0 );
 				materialParams.opacity = 1.0;

src/renderers/webgl/WebGLProgram.js

@@ -392,7 +392,7 @@ function WebGLProgram( renderer, extensions, code, material, shader, parameters,
 			parameters.normalMap ? '#define USE_NORMALMAP' : '',
 			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
 			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',
-			
+
 			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
 			parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',
 			parameters.specularMap ? '#define USE_SPECULARMAP' : '',