diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index d253bd9a7e6b4de138ae260131b61986c875795f..59f5eeb352df1f9e30c11d4759ffc9fcdb497fbf 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -4109,6 +4109,8 @@ THREE.WebGLRenderer = function ( parameters ) {
 			specularMap: !! material.specularMap,
 			alphaMap: !! material.alphaMap,
 
+			combine: material.combine,
+
 			vertexColors: material.vertexColors,
 
 			fog: fog,
@@ -4603,7 +4605,6 @@ THREE.WebGLRenderer = function ( parameters ) {
 		}
 
 		uniforms.refractionRatio.value = material.refractionRatio;
-		uniforms.combine.value = material.combine;
 		uniforms.useRefract.value = material.envMap && (
 			material.envMap.mapping === THREE.CubeRefractionMapping ||
 			material.envMap.mapping === THREE.EquirectangularRefractionMapping );
diff --git a/src/renderers/shaders/ShaderChunk/envmap_fragment.glsl b/src/renderers/shaders/ShaderChunk/envmap_fragment.glsl
index 9c60459d1098a1fc41ed357956f40fd405d8b124..d5427913dc0c482697b4b96db4bdef7444bf4f6c 100644
--- a/src/renderers/shaders/ShaderChunk/envmap_fragment.glsl
+++ b/src/renderers/shaders/ShaderChunk/envmap_fragment.glsl
@@ -53,18 +53,18 @@
 
 	#endif
 
-	if ( combine == 1 ) {
+	#ifdef ENVMAP_BLENDING_MULTIPLY
 
-		gl_FragColor.xyz = mix( gl_FragColor.xyz, envColor.xyz, specularStrength * reflectivity );
+		gl_FragColor.xyz = mix( gl_FragColor.xyz, gl_FragColor.xyz * envColor.xyz, specularStrength * reflectivity );
 
-	} else if ( combine == 2 ) {
+	#elif defined( ENVMAP_BLENDING_MIX )
 
-		gl_FragColor.xyz += envColor.xyz * specularStrength * reflectivity;
+		gl_FragColor.xyz = mix( gl_FragColor.xyz, envColor.xyz, specularStrength * reflectivity );
 
-	} else {
+	#elif defined( ENVMAP_BLENDING_ADD )
 
-		gl_FragColor.xyz = mix( gl_FragColor.xyz, gl_FragColor.xyz * envColor.xyz, specularStrength * reflectivity );
+		gl_FragColor.xyz += envColor.xyz * specularStrength * reflectivity;
 
-	}
+	#endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/renderers/shaders/ShaderChunk/envmap_pars_fragment.glsl b/src/renderers/shaders/ShaderChunk/envmap_pars_fragment.glsl
index 5fe7f99045086514227593e1463ed56e7d830d31..657f06ba974800f9afaf244d083ee47c38df34fb 100644
--- a/src/renderers/shaders/ShaderChunk/envmap_pars_fragment.glsl
+++ b/src/renderers/shaders/ShaderChunk/envmap_pars_fragment.glsl
@@ -7,7 +7,6 @@
 		uniform sampler2D envMap;
 	#endif
 	uniform float flipEnvMap;
-	uniform int combine;
 
 	#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )
 
@@ -20,4 +19,4 @@
 
 	#endif
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/renderers/shaders/UniformsLib.js b/src/renderers/shaders/UniformsLib.js
index e84336bde82b8d8ec842962789802baabb1baeaf..65c7eb57af6b12101ddf88b5ce3fccc5c34cda68 100644
--- a/src/renderers/shaders/UniformsLib.js
+++ b/src/renderers/shaders/UniformsLib.js
@@ -21,7 +21,6 @@ THREE.UniformsLib = {
 		"useRefract" : { type: "i", value: 0 },
 		"reflectivity" : { type: "f", value: 1.0 },
 		"refractionRatio" : { type: "f", value: 0.98 },
-		"combine" : { type: "i", value: 0 },
 
 		"morphTargetInfluences" : { type: "f", value: 0 }
 
diff --git a/src/renderers/webgl/WebGLProgram.js b/src/renderers/webgl/WebGLProgram.js
index a1e2b77382e4abd29c62bde152b57f07006989f0..1c108a1ba9373d14b1abd8c3bfdb158c90dbcc52 100644
--- a/src/renderers/webgl/WebGLProgram.js
+++ b/src/renderers/webgl/WebGLProgram.js
@@ -84,7 +84,8 @@ THREE.WebGLProgram = ( function () {
 
 		}
 
-		var envMapTypeDefine = null;
+		var envMapTypeDefine = "ENVMAP_TYPE_CUBE";
+		var envMapBlendingDefine = "ENVMAP_BLENDING_MULTIPLY";
 
 		if ( parameters.envMap ) {
 
@@ -104,8 +105,20 @@ THREE.WebGLProgram = ( function () {
 					envMapTypeDefine = "ENVMAP_TYPE_SPHERE";
 					break;
 
-				default:
-					envMapTypeDefine = "ENVMAP_TYPE_CUBE";
+			}
+
+			switch ( material.combine ) {
+
+				case THREE.MultiplyOperation:
+					envMapBlendingDefine = "ENVMAP_BLENDING_MULTIPLY";
+					break;
+
+				case THREE.MixOperation:
+					envMapBlendingDefine = "ENVMAP_BLENDING_MIX";
+					break;
+
+				case THREE.AddOperation:
+					envMapBlendingDefine = "ENVMAP_BLENDING_ADD";
 					break;
 
 			}
@@ -261,7 +274,8 @@ THREE.WebGLProgram = ( function () {
 
 				parameters.map ? "#define USE_MAP" : "",
 				parameters.envMap ? "#define USE_ENVMAP" : "",
-				envMapTypeDefine ? "#define " + envMapTypeDefine : "",
+				parameters.envMap ? "#define " + envMapTypeDefine : "",
+				parameters.envMap ? "#define " + envMapBlendingDefine : "",
 				parameters.lightMap ? "#define USE_LIGHTMAP" : "",
 				parameters.bumpMap ? "#define USE_BUMPMAP" : "",
 				parameters.normalMap ? "#define USE_NORMALMAP" : "",