diff --git a/src/Core/Materials/OOMaterialSpecifier.h b/src/Core/Materials/OOMaterialSpecifier.h
index 22bd08fc..ace95cfd 100644
--- a/src/Core/Materials/OOMaterialSpecifier.h
+++ b/src/Core/Materials/OOMaterialSpecifier.h
@@ -91,6 +91,9 @@ extern NSString * const kOOMaterialEmissionAndIlluminationMapName;
 extern NSString * const kOOMaterialParallaxScaleName;
 extern NSString * const kOOMaterialParallaxBiasName;
 
+extern NSString * const kOOMaterialIORName;
+extern NSString * const kOOMaterialGlossName;
+
 extern NSString * const kOOMaterialSpecularExponentName;
 extern NSString * const kOOMaterialSpecularExponentLegacyName;
 
diff --git a/src/Core/Materials/OOShaderMaterial.h b/src/Core/Materials/OOShaderMaterial.h
index 7fec950e..5d9d26da 100644
--- a/src/Core/Materials/OOShaderMaterial.h
+++ b/src/Core/Materials/OOShaderMaterial.h
@@ -77,6 +77,8 @@ typedef uint16_t OOUniformConvertOptions;
 							dictionaries containing:
 			type			"int", "texture" or "float"
 			value			number
+		gloss			gloss value of material, float between 0.0 and 1.0, defaults to 0.5
+		ior				index of refraction of material, positive float, defaults to 1.0
 	
 	Macros is a dictionary which is converted to macro definitions and
 	prepended to shader source code. It should be used to specify the
diff --git a/src/Core/Materials/OOShaderMaterial.m b/src/Core/Materials/OOShaderMaterial.m
index 69b477d5..457f8e7f 100644
--- a/src/Core/Materials/OOShaderMaterial.m
+++ b/src/Core/Materials/OOShaderMaterial.m
@@ -257,6 +257,18 @@ static NSString *MacrosToString(NSDictionary *macros);
 		[self addTexturesFromArray:textureArray unitCount:textureUnits];
 	}
 	
+	if (OK)
+	{
+		// write gloss and index of refraction to the uniforms dictionary
+
+		float gloss = OOClamp_0_1_f([configuration oo_floatForKey:@"gloss"  defaultValue:0.5f]);
+		[self setUniform:@"uGloss" floatValue:gloss];
+		
+		float ior = [configuration oo_floatForKey:@"ior"  defaultValue:1.0f];
+		if (ior <= 0.0f)  ior = 0.001f;
+		[self setUniform:@"uIOR" floatValue:ior];
+	}
+	
 	if (!OK)
 	{
 		[self release];