diff --git a/src/alternativa/engine3d/core/Camera3D.as b/src/alternativa/engine3d/core/Camera3D.as
index 9f792e3..ab1cbc7 100644
--- a/src/alternativa/engine3d/core/Camera3D.as
+++ b/src/alternativa/engine3d/core/Camera3D.as
@@ -319,6 +319,10 @@ public class Camera3D extends Object3D {
 				}
 				lightsLength = j;
 				lights.length = j;
+
+				// Sort lights by types
+				if (lightsLength > 0) sortLights(0, lightsLength - 1);
+
 				// Check getting in frustum and occluding
 				if (root.culling >= 0 && (root.boundBox == null || occludersLength == 0 || !root.boundBox.checkOcclusion(occluders, occludersLength, root.localToCameraTransform))) {
 					// Check if the ray crossing the bounding box
@@ -397,6 +401,38 @@ public class Camera3D extends Object3D {
 		cpuTimer = -1;
 	}
 
+
+	/**
+	 * @private
+	 */
+	private function sortLights(l:int, r:int):void {
+		var i:int = l;
+		var j:int = r;
+		var left:Light3D;
+		var index:int = (r + l) >> 1;
+		var m:Light3D = lights[index];
+		var mid:int = m.type;
+		var right:Light3D;
+		do {
+			while ((left = lights[i]).type < mid) {
+				i++;
+			}
+			while (mid < (right = lights[j]).type) {
+				j--;
+			}
+			if (i <= j) {
+				lights[i++] = right;
+				lights[j--] = left;
+			}
+		} while (i <= j);
+		if (l < j) {
+			sortLights(l, j);
+		}
+		if (i < r) {
+			sortLights(i, r);
+		}
+	}
+
 	/**
 	 * Transforms point from global space to screen space. The <code>view</code> property should be defined.
 	 * @param point Point in global space.
diff --git a/src/alternativa/engine3d/core/Light3D.as b/src/alternativa/engine3d/core/Light3D.as
index 31fae99..2554144 100644
--- a/src/alternativa/engine3d/core/Light3D.as
+++ b/src/alternativa/engine3d/core/Light3D.as
@@ -24,6 +24,16 @@ package alternativa.engine3d.core {
 	 */
 	public class Light3D extends Object3D {
 
+		/**
+		 * @private
+		 */
+		alternativa3d var type:int = 0;
+		alternativa3d static const AMBIENT:int = 1;
+		alternativa3d static const DIRECTIONAL:int = 2;
+		alternativa3d static const OMNI:int = 3;
+		alternativa3d static const SPOT:int = 4;
+		alternativa3d static const SHADOW_BIT:int = 0x100;
+
 		/**
 		 * @private
 		 */
@@ -124,6 +134,7 @@ package alternativa.engine3d.core {
 			if (_shadow != null) _shadow._light = null;
 			_shadow = value;
 			if (value != null) value._light = this;
+			type = (value != null) ? type & ~SHADOW_BIT : type | SHADOW_BIT;
 		}
 	}
 }
diff --git a/src/alternativa/engine3d/lights/AmbientLight.as b/src/alternativa/engine3d/lights/AmbientLight.as
index 829462b..10fba53 100644
--- a/src/alternativa/engine3d/lights/AmbientLight.as
+++ b/src/alternativa/engine3d/lights/AmbientLight.as
@@ -30,6 +30,7 @@ package alternativa.engine3d.lights {
 		 * @param color Light color.
 		 */
 		public function AmbientLight(color:uint) {
+			this.type = AMBIENT;
 			this.color = color;
 		}
 
diff --git a/src/alternativa/engine3d/lights/DirectionalLight.as b/src/alternativa/engine3d/lights/DirectionalLight.as
index a5bc48f..a1e2547 100644
--- a/src/alternativa/engine3d/lights/DirectionalLight.as
+++ b/src/alternativa/engine3d/lights/DirectionalLight.as
@@ -31,6 +31,7 @@ package alternativa.engine3d.lights {
 		 * @param color Color of light source.
 		 */
 		public function DirectionalLight(color:uint) {
+			this.type = DIRECTIONAL;
 			this.color = color;
 		}
 
diff --git a/src/alternativa/engine3d/lights/OmniLight.as b/src/alternativa/engine3d/lights/OmniLight.as
index ee23aec..07c55ae 100644
--- a/src/alternativa/engine3d/lights/OmniLight.as
+++ b/src/alternativa/engine3d/lights/OmniLight.as
@@ -39,6 +39,7 @@ package alternativa.engine3d.lights {
 		 * @param attenuationEnd Distance from at which falloff is complete.
 		 */
 		public function OmniLight(color:uint, attenuationBegin:Number, attenuationEnd:Number) {
+			this.type = OMNI;
 			this.color = color;
 			this.attenuationBegin = attenuationBegin;
 			this.attenuationEnd = attenuationEnd;
diff --git a/src/alternativa/engine3d/lights/SpotLight.as b/src/alternativa/engine3d/lights/SpotLight.as
index fdd8d9e..4f54935 100644
--- a/src/alternativa/engine3d/lights/SpotLight.as
+++ b/src/alternativa/engine3d/lights/SpotLight.as
@@ -54,6 +54,7 @@ package alternativa.engine3d.lights {
 		 * @param falloff Adjusts the angle of a light's falloff. The Falloff value is measured in radians.
 		 */
 		public function SpotLight(color:uint, attenuationBegin:Number, attenuationEnd:Number, hotspot:Number, falloff:Number) {
+			this.type = SPOT;
 			this.color = color;
 			this.attenuationBegin = attenuationBegin;
 			this.attenuationEnd = attenuationEnd;
diff --git a/src/alternativa/engine3d/materials/ShaderProgram.as b/src/alternativa/engine3d/materials/ShaderProgram.as
index edef8f8..6c928ed 100644
--- a/src/alternativa/engine3d/materials/ShaderProgram.as
+++ b/src/alternativa/engine3d/materials/ShaderProgram.as
@@ -20,7 +20,6 @@ package alternativa.engine3d.materials {
 	 */
 	public class ShaderProgram {
 
-		public var key:String;
 		public var program:Program3D;
 		
 		public var vertexShader:Linker;
diff --git a/src/alternativa/engine3d/materials/StandardMaterial.as b/src/alternativa/engine3d/materials/StandardMaterial.as
index 59e5ba0..b22080a 100644
--- a/src/alternativa/engine3d/materials/StandardMaterial.as
+++ b/src/alternativa/engine3d/materials/StandardMaterial.as
@@ -51,17 +51,18 @@ package alternativa.engine3d.materials {
 	 */
 	public class StandardMaterial extends TextureMaterial {
 
-		private static const LIGHT_MAP:int = 1;
-		private static const GLOSSINESS_MAP:int = 2;
-		private static const SPECULAR_MAP:int = 4;
-		private static const OPACITY_MAP:int = 8;
-		private static const NORMAL_MAP_SPACE_BIT:int = 4;
-		private static const ALPHA_TEST_BIT:int = 6;
-		private static const OMNI_LIGHT_BIT:int = 8;
-		private static const DIRECTIONAL_LIGHT_BIT:int = 11;
-		private static const SPOT_LIGHT_BIT:int = 14;
-		private static const OBJECT_TYPE_BIT:int = 17;
-
+		private static const LIGHT_MAP_BIT:int = 1;
+		private static const GLOSSINESS_MAP_BIT:int = 2;
+		private static const SPECULAR_MAP_BIT:int = 4;
+		private static const OPACITY_MAP_BIT:int = 8;
+		private static const NORMAL_MAP_SPACE_OFFSET:int = 4;	// shift value
+		private static const ALPHA_TEST_OFFSET:int = 6;
+		private static const OMNI_LIGHT_OFFSET:int = 8;
+		private static const DIRECTIONAL_LIGHT_OFFSET:int = 11;
+		private static const SPOT_LIGHT_OFFSET:int = 14;
+		private static const SHADOW_OFFSET:int = 17;
+		// TODO: remove double cash by transform procedure. It increase speed by 1%
+//		private static const OBJECT_TYPE_BIT:int = 19;
 
 		private static var caches:Dictionary = new Dictionary(true);
 		private var cachedContext3D:Context3D;
@@ -529,16 +530,9 @@ package alternativa.engine3d.materials {
 		 * @param lightsLength
 		 */
 		private function getProgram(object:Object3D, programs:Array, camera:Camera3D, materialKey:int, opacityMap:TextureResource, alphaTest:int, lightsGroup:Vector.<Light3D>, lightsLength:int, isFirstGroup:Boolean, shadowedLight:Light3D):StandardMaterialProgram {
-			var key:int = materialKey + (opacityMap != null ? OPACITY_MAP : 0) + alphaTest << ALPHA_TEST_BIT;
+			var key:int = materialKey | (opacityMap != null ? OPACITY_MAP_BIT : 0) | (alphaTest << ALPHA_TEST_OFFSET);
 			var program:StandardMaterialProgram = programs[key];
 
-//			var programsCount:int = programs.length;
-//			for (var i:int = 0; i<programsCount; i++){
-//				if (programs[i].key == key){
-//					program = StandardMaterialProgram(programs[i]);
-//				}
-//			}
-//			trace(programsCount);
 			if (program == null) {
 				var vertexLinker:Linker = new Linker(Context3DProgramType.VERTEX);
 				var fragmentLinker:Linker = new Linker(Context3DProgramType.FRAGMENT);
@@ -1005,12 +999,12 @@ package alternativa.engine3d.materials {
 				cachedContext3D = camera.context3D;
 				programsCache = caches[cachedContext3D];
 				if (programsCache == null) {
-					programsCache = new Dictionary(true);
+					programsCache = new Dictionary(false);
 					caches[cachedContext3D] = programsCache;
 				}
 			}
-
-			var optionsPrograms:Array = programsCache[object.transformProcedure];
+			var optionsPrograms:Array;
+			optionsPrograms = programsCache[object.transformProcedure];
 			if (optionsPrograms == null) {
 				optionsPrograms = new Array();
 				programsCache[object.transformProcedure] = optionsPrograms;
@@ -1047,9 +1041,9 @@ package alternativa.engine3d.materials {
 			if (groupsCount == 0 && shadowGroupLength == 0) {
 				// There is only Ambient light on the scene
 				// Form key
-				materialKey = 	(lightMap != null) ? LIGHT_MAP : 0 +
-								(glossinessMap != null) ? GLOSSINESS_MAP : 0 +
-								(specularMap != null) ? SPECULAR_MAP : 0;
+				materialKey = 	((lightMap != null) ? LIGHT_MAP_BIT : 0) |
+								((glossinessMap != null) ? GLOSSINESS_MAP_BIT : 0) |
+								((specularMap != null) ? SPECULAR_MAP_BIT : 0);
 
 				if (opaquePass && alphaThreshold <= alpha) {
 					if (alphaThreshold > 0) {
@@ -1085,20 +1079,20 @@ package alternativa.engine3d.materials {
 
 					// Group of lights without shadow
 					// Form key
-					materialKey = (isFirstGroup)?((lightMap != null) ? LIGHT_MAP : 0) : 0;
-					materialKey +=
-							((_normalMapSpace==NormalMapSpace.OBJECT) ? 1 : (_normalMapSpace==NormalMapSpace.TANGENT_LEFT_HANDED) ? 2 : 3) << NORMAL_MAP_SPACE_BIT +
-							(glossinessMap != null) ? GLOSSINESS_MAP : 0 +
-							(specularMap != null) ? SPECULAR_MAP : 0;
+					materialKey = (isFirstGroup)?((lightMap != null) ? LIGHT_MAP_BIT : 0) : 0;
+					materialKey |=
+							(_normalMapSpace << NORMAL_MAP_SPACE_OFFSET) |
+							((glossinessMap != null) ? GLOSSINESS_MAP_BIT : 0) |
+							((specularMap != null) ? SPECULAR_MAP_BIT : 0);
 					for (j = 0; j < lightGroupLength; j++) {
 						light = lightGroup[j];
 						if (light is OmniLight) OmniLightCount++;
 						else if (light is DirectionalLight) DirectionalLightCount++;
 						else if (light is SpotLight) SpotLightCount++;
 					}
-					materialKey += OmniLightCount << OMNI_LIGHT_BIT;
-					materialKey += DirectionalLightCount << DIRECTIONAL_LIGHT_BIT;
-					materialKey += SpotLightCount << SPOT_LIGHT_BIT;
+					materialKey |= OmniLightCount << OMNI_LIGHT_OFFSET;
+					materialKey |= DirectionalLightCount << DIRECTIONAL_LIGHT_OFFSET;
+					materialKey |= SpotLightCount << SPOT_LIGHT_OFFSET;
 
 
 					// Create program and drawUnit for group
@@ -1139,15 +1133,14 @@ package alternativa.engine3d.materials {
 
 						light = shadowGroup[j];
 						// Form key
-						materialKey = (isFirstGroup)?((lightMap != null) ? LIGHT_MAP : 0) : 0;
-						materialKey +=
-								((_normalMapSpace==NormalMapSpace.OBJECT) ? 1 : (_normalMapSpace==NormalMapSpace.TANGENT_LEFT_HANDED) ? 2 : 3) << NORMAL_MAP_SPACE_BIT +
-								(glossinessMap != null) ? GLOSSINESS_MAP : 0 +
-								(specularMap != null) ? SPECULAR_MAP : 0;
-
-						if (light is OmniLight) materialKey += light.shadow.type << OMNI_LIGHT_BIT;
-						else if (light is DirectionalLight) materialKey += light.shadow.type << DIRECTIONAL_LIGHT_BIT;
-						else if (light is SpotLight) materialKey += light.shadow.type << SPOT_LIGHT_BIT;
+						materialKey = (isFirstGroup)?((lightMap != null) ? LIGHT_MAP_BIT : 0) : 0;
+						materialKey |=	(_normalMapSpace << NORMAL_MAP_SPACE_OFFSET) |
+										((glossinessMap != null) ? GLOSSINESS_MAP_BIT : 0) |
+										((specularMap != null) ? SPECULAR_MAP_BIT : 0);
+						materialKey |= light.shadow.type << SHADOW_OFFSET;
+						if (light is OmniLight) materialKey |= 1 << OMNI_LIGHT_OFFSET;
+						else if (light is DirectionalLight) materialKey |= 1 << DIRECTIONAL_LIGHT_OFFSET;
+						else if (light is SpotLight) materialKey |= 1 << SPOT_LIGHT_OFFSET;
 
 						// Для группы создаем программу и дроуюнит
 						// Opaque pass
diff --git a/src/alternativa/engine3d/materials/TextureMaterial.as b/src/alternativa/engine3d/materials/TextureMaterial.as
index 3504555..b98ac30 100644
--- a/src/alternativa/engine3d/materials/TextureMaterial.as
+++ b/src/alternativa/engine3d/materials/TextureMaterial.as
@@ -172,6 +172,7 @@ package alternativa.engine3d.materials {
 		private function getProgram(object:Object3D, programs:Vector.<TextureMaterialProgram>, camera:Camera3D, opacityMap:TextureResource, alphaTest:int):TextureMaterialProgram {
 			var key:int = (opacityMap != null ? 3 : 0) + alphaTest;
 			var program:TextureMaterialProgram = programs[key];
+
 			if (program == null) {
 				// Make program
 				// Vertex shader
diff --git a/src/alternativa/engine3d/shadows/Shadow.as b/src/alternativa/engine3d/shadows/Shadow.as
index 03628d0..d73526a 100644
--- a/src/alternativa/engine3d/shadows/Shadow.as
+++ b/src/alternativa/engine3d/shadows/Shadow.as
@@ -23,8 +23,9 @@ package alternativa.engine3d.shadows {
 	 */
 	public class Shadow {
 
-		alternativa3d static const SIMPLE_MODE:int = 6;
-		alternativa3d static const PCF_MODE:int = 7;
+		alternativa3d static const NONE_MODE:int = 0;
+		alternativa3d static const SIMPLE_MODE:int = 1;
+		alternativa3d static const PCF_MODE:int = 2;
 
 		/**
 		 * Debug mode.
@@ -35,7 +36,7 @@ package alternativa.engine3d.shadows {
 		 * @private
 		 * Key for processing in materials.
 		 */
-		alternativa3d var type:int = 6;
+		alternativa3d var type:int = 0;
 
 		/**
 		 * @private