Merge remote-tracking branch 'origin/master'

2025-10-26 09:59:10 -07:00 · 2012-08-16 15:34:29 +06:00
parent 7de7fa62a8 c33277260c
commit 9e3a23ee57
17 changed files with 1736 additions and 1305 deletions
--- a/changelog_en.txt
+++ b/changelog_en.txt
@@ -0,0 +1,196 @@
+Changelog Alternativa3D
+
+NEXT
+----
+Added:
+ Added:
+ Object3DUtils: setPosition, lookAt to Camera3D and converting between Radians and Degrees
+ Stage3D constrained profile support
+ BitmapTextureResource: auto resize for GPU option
+ MouseEvent3D: right and middle mouse buttons support (FP 11.2 and -swf-version=15 required)
+ Object3D: excludeLight()
+ OmniLightShadow: add omni radius in debug scale
+ Camera3D: light sorting
+
+Fixed:
+= Object3D.toString()
+= AnimationClip: animated and loop properties in AnimationClip.slice(), AnimationClip.clone() 
+= Bubbling in MouseEvent3D
+= ExporterA3D: export meshes without geometry as Object3D
+= Box: correct tangents and binormals
+= WireFrame:fix createBinormals()
+= Decal: Fixed incorrect drawing with extremaly low nearClipping.
+= View: Fixed bug with mouse events and postprosessing
+= Several minor fixes
+
+Removed:
+-Diagram: removed CPU time
+
+8.31.0
+---
+= Rendering optimizations
+= Increased materials performance
+= AnimationController:fixed error when using notifiers cause animation goes in infinite loop
+= Camera3D: fixed a bug with duplicating diagram
+
+8.30.0
+---
+Fixed:
+= OmniLightShadow: fixed some errors and increased performance
+= ParserCollada: loading Skin without normals and tangents
+= ParserA3D: parsing scene with spot lights
+= DirectionalLigthShadow, OmniLightShadow:default value of biasMultiplyer property was changed to 0.97
+= StandardMaterial:removed traces
+
+8.29.0
+---
+Added:
+ Possibility to use unlimited light sources and shadows count with StandardMaterial
+ A flag Object3D.useShadow which controls shadow visibility on object.
+ OmniLightShadow class
+
+Fixed:
+= Fixed issue with Skin lighting
+= StandardMaterial does not throw exception about limitation number of light sources and shadows anymore.
+
+8.27.0
+----
+Added:
+ Added DirectionalLightShadow class for calculation of shadow from directional light source.
+ ParserA3D: implemented import of animation, LOD objects and layers from binary format A3D.
+ ExporterA3D: implemented export of Skin class objects, animation and materials to binary format A3D.
+ Added rendering of materials with alpha-test and two-pass alpha-test.
+  API of materials has been changed: now, if you want to show objects with translucent textures, you must to set value of alphaThreshold.
+ Implemented EnvironmentMaterial with simulation of reflection on cube texture.
+ StandardMaterial: added ability to use pre-computed texture of light together with dynamic light.
+ Added check for maximum number of light sources influencing on object.
+ Added LOD class for switching of detail levels depending on the distance between camera and object.
+ Implemented Occluder class that removes objects, covered by obstacles from rendering.
+ Object3D: added field userData with type Object.
+ Skin, Joint: added methods of setting and calculation of bind position matrix.
+ Skin: implemented method of bound-box calculation, taking into account bone transformation.
+ Geometry: added calculateNormals() and calculateTangents() methods for calculation of normals and vertex tangents, respectively.
+ Added cloning methods at all materials and Camera3D class.
+ Added base Parser class, that is parent class for ParserA3D, ParserCollada and Parser3DS.
+ Camera3D: added display of average frame time and CPU calculation time in statistics.
+ ParserCollada: now you can import intensivity for light sources.
+
+Fixed:
+= Fixed incorrect engine work after changing of current Context3D.
+= ExporterA3D: fixed the export of materials to binary format A3D.
+= Fixed some problems with mouse events:
+  - mouse events at flash player version 11.1;
+  - mouse events at software rendering;
+  - mouse events with non-convex objects.
+= VertexLightTextureMaterial: fixed incorrect light from SpotLight.
+= Object3D: removed incorrect dispatch of events Event3D.ADDED, Event3D.REMOVED when you re-add object to its parent.
+= AmbientLight, DirectionalLight: fixed calculation of bound-box.
+= Wireframe: fixed bug with incorrect thickness of lines on some sizes of view.
+= Optimized playing of animation.
+= Accelerated the import and creation of animation using format parser.
+= View: fixed joint work with Flash-profiler.
+
+Removed:
+- Removed support of Flash Player Incubator.
+- TextureMaterial: removed parameter useDiffuseAlphaChannel.
+- Skin: parameter numJoints removed from constructor.
+
+8.17.0
+----
+ ParserA3D: added the import of objects of Skin type and the import of light sources.
+ Added Parser3DS class for import models from 3DS format.
+ Added intersectRay() - The method of finding a ray intersects with an object of Mesh type.
+ Added AxisAlignedSprite class to display plane oriented along one axis to the camera.
+ Export to the binary format A3D is supported.
+ Added debug mode displaying of objects bounds.
+ Added primitive Plane.
+ GeoSphere primitive has normals and tangents of vertices after creation.
+ Normalmaps supported with left-sided system of coordinates in StandardMaterial.
+
+= Decal: removed the offset property and changed the logic of work.
+= StandardMaterial: fixed a bug with lighting of some light sources.
+= FillMaterial: color in construstor is grey by default now.
+= Box: constructor is optimized.
+= Box: fixed a bug in the cloning of the primitive. Surfaces is not duplicated now.
+= WireFrame.getResources() allows parameter resourceType now.
+
+8.12.0
+----
+ The Public version Flash Player 11 Beta 2 is now supported.
+ The orthographic mode has been added to the Camera3D.
+ The MouseEvent system has been optimized and accelerated.
+ Logo "AlternativaPltaform" has been updated.
+ Now when objects are added and removed from the parent, the event will be sent (Event3D.ADDED, Event3D.REMOVED).
+ The ability to change the property renderToBitmap into View after creating has been added.
+
+= The height and width of the View has been limited to the minimum size of 50x50.
+= Bug in mouse events system when used skins divided on surfaces by divide() was fixed.
+= A bug has been fixed in Decal.
+= Skin lighting algorithm changed to more precise one.
+= ParserCollada: Fixed a bug when binormal vector of the vertices of the object was incorrectly parsed.
+= The value of backgroundAlpha in the View constructor changed to 1.0 by default.
+= VertexLightTextureMaterial now draws correctly without lights in scene.
+= MouseEvent3D was moved from alternativa.engine3d.core to alternativa.engine3d.core.events.
+= A bug has been fixed in Object3D.dispatchEvent().
+= The offset property has been added to the constructor Decal and it is compulsory.
+= Now the offset property can be copied using the clone () method of class Decal.
+
+- The ratio property has been removed from View class.
+- VertexLightTextureMaterial now can be used with skin with the maximum number of bones in surface no more than 33.
+
+8.8.0
+----
+- TextureMaterial, VertexLightMaterial, LightmapMaterial now supports the map-transparency and alpha property.
+- Added EllipsoidCollider class for continuous collision detection.
+- Added Decal class for detalization of texture on models.
+- WireFrame class was added.
+- New class SkyBox was added.
+- StandardMaterial supports Object-space normal maps now.
+- StandardMaterial supports glossiness maps now
+- Property alwaysOnTop was added in the Sprite.
+- clone() method was added to Skin.
+- concatenatedMatrix property was added in Object3D.
+- Primitive Box contains vertex tangents now.
+- ParserA3D: glossiness and opacity maps are supported now.
+- Parsing of Skin with animation from collada was fixed.
+- ParserCollada: a bug, when model without vertex normals parsed, was fixed.
+- Lighting in StandartMaterial, VertexLightMaterial, when models have non-identity scale, was fixed.
+- View can be any size now without throwing exceptions.
+- Mouse events work properly now after creating the View with zero width or height.
+- Bug with culling of scaled objects in camera frustum was fixed.
+- A bug in dispose() method of Geometry class was fixed.
+- DirectionalLight: bug with wrong light direction after parsing from Collada was fixed.
+- ParserA3D: bug with wrong textures assignment was fixed.
+- ParserA3D: vertex tangents are supported now.
+- ParserA3D: bug, when Geometry methods worked incorrectly on a parsed model, was fixed.
+- FileTextureResource: after a repeated call to upload() the resource is not destroyed now.
+- FileTextureResource: you can get and set the texture data now.
+- FileTextureResource renamed to ExternalTextureResource.
+- ColladaMaterial renamed to ParserMaterial.
+- Surface: owner property renamed to object.
+- Geometry: findVertexBufferByAttribute renamed to findVertexStreamByAttribute.
+- Sprite3D: StandartMaterial and VertexLightMaterial are not supported with it now.
+- Fillmaterial: the color property has uint type now.
+
+8.5.0
+-----
+- GPU support
+- Directional, omni, spot lights
+- Hierarchical exclusion of light sources
+- Material with normal, specular, opacity mapping
+- Lightmap Material
+- Vertex light Material
+- Fill Material
+- Skin
+- Skin subdividing
+- Semi-transparent Material
+- Mesh with several materials
+- Sprite
+- Animated Sprite
+- GPU-based MouseEvents
+- ATF textures loading
+- Collada loading
+- Binary A3D loading
+- Drawing to DisplayObject mode
+- Animation engine
+- Hierarchical Animated blending tree
--- a/src/alternativa/engine3d/animation/AnimationClip.as
+++ b/src/alternativa/engine3d/animation/AnimationClip.as
@@ -465,6 +465,8 @@ package alternativa.engine3d.animation {
 		 */
 		public function slice(start:Number, end:Number = Number.MAX_VALUE):AnimationClip {
 			var sliced:AnimationClip = new AnimationClip(name);
+			sliced.animated = animated;
+			sliced.loop = loop;
 			sliced._objects = (_objects == null) ? null : [].concat(_objects);
 			for (var i:int = 0; i < _numTracks; i++) {
 				sliced.addTrack(_tracks[i].slice(start, end));
@@ -477,6 +479,8 @@ package alternativa.engine3d.animation {
 		 */
 		public function clone():AnimationClip {
 			var cloned:AnimationClip = new AnimationClip(name);
+			cloned.animated = animated;
+			cloned.loop = loop;
 			cloned._objects = (_objects == null) ? null : [].concat(_objects);
 			for (var i:int = 0; i < _numTracks; i++) {
 				cloned.addTrack(_tracks[i]);
--- a/src/alternativa/engine3d/core/Camera3D.as
+++ b/src/alternativa/engine3d/core/Camera3D.as
@@ -46,6 +46,12 @@ package alternativa.engine3d.core {
 */
 public class Camera3D extends Object3D {

+	/**
+	 * @private
+	 * Key - context, value - properties.
+	 */
+	alternativa3d static var context3DPropertiesPool:Dictionary = new Dictionary(true);
+
 	/**
 	 * The viewport defines part of screen to which renders image seen by the camera.
 	 * If viewport is not defined, the camera would not draws anything.
@@ -156,6 +162,11 @@ public class Camera3D extends Object3D {
 	 */
 	alternativa3d var context3D:Context3D;

+	/**
+	 * @private
+	 */
+	alternativa3d var context3DProperties:RendererContext3DProperties;
+
 	/**
 	 * @private
 	 * Camera's renderer. If is not defined, the camera will no draw anything.
@@ -195,7 +206,6 @@ public class Camera3D extends Object3D {
 	 * @param stage3D  <code>Stage3D</code> to which image will be rendered.
 	 */
 	public function render(stage3D:Stage3D):void {
-		// TODO: don't check mouse events if no listeners
 		var i:int;
 		var j:int;
 		var light:Light3D;
@@ -214,13 +224,27 @@ public class Camera3D extends Object3D {
 		ambient[2] = 0;
 		ambient[3] = 1;
 		// Receiving the context
-		context3D = stage3D.context3D;
+		var currentContext3D:Context3D = stage3D.context3D;
+		if (currentContext3D != context3D) {
+			if (currentContext3D != null) {
+				context3DProperties = context3DPropertiesPool[currentContext3D];
+				if (context3DProperties == null) {
+					context3DProperties = new RendererContext3DProperties();
+					context3DProperties.isConstrained = currentContext3D.driverInfo.lastIndexOf("(Baseline Constrained)") >= 0;
+					context3DPropertiesPool[currentContext3D] = context3DProperties;
+				}
+				context3D = currentContext3D;
+			} else {
+				context3D = null;
+				context3DProperties = null;
+			}
+		}
 		if (context3D != null && view != null && renderer != null && (view.stage != null || view._canvas != null)) {
 			renderer.camera = this;
 			// Projection argument calculating
 			calculateProjection(view._width, view._height);
 			// Preparing to rendering
-			view.prepareToRender(stage3D, context3D);
+			view.configureContext3D(stage3D, context3D, this);
 			// Transformations calculating
 			if (transformChanged) composeTransforms();
 			localToGlobalTransform.copy(transform);
@@ -236,14 +260,12 @@ public class Camera3D extends Object3D {

 			// Check if object of hierarchy is visible
 			if (root.visible) {
-				globalMouseHandlingType = 0;
-
 				// Calculating the matrix to transform from the camera space to local space
 				root.cameraToLocalTransform.combine(root.inverseTransform, localToGlobalTransform);
 				// Calculating the matrix to transform from local space to the camera space
 				root.localToCameraTransform.combine(globalToLocalTransform, root.transform);

-				if (root.mouseEnabled) globalMouseHandlingType |= root.mouseHandlingType;
+				globalMouseHandlingType = root.mouseHandlingType;
 				// Checking the culling
 				if (root.boundBox != null) {
 					calculateFrustum(root.cameraToLocalTransform);
@@ -251,7 +273,7 @@ public class Camera3D extends Object3D {
 				} else {
 					root.culling = 63;
 				}
-				// Calculations of conent visibility
+				// Calculations of content visibility
 				if (root.culling >= 0) root.calculateVisibility(this);
 				// Calculations  visibility of children
 				root.calculateChildrenVisibility(this);
@@ -334,6 +356,16 @@ public class Camera3D extends Object3D {
 				}
 				raysLength = view.raysLength;

+				var r:Number = ((view.backgroundColor >> 16) & 0xff)/0xff;
+				var g:Number = ((view.backgroundColor >> 8) & 0xff)/0xff;
+				var b:Number = (view.backgroundColor & 0xff)/0xff;
+				if (view._canvas != null) {
+					r *= view.backgroundAlpha;
+					g *= view.backgroundAlpha;
+					b *= view.backgroundAlpha;
+				}
+				context3D.clear(r, g, b, view.backgroundAlpha);
+
 				// 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
@@ -387,7 +419,6 @@ public class Camera3D extends Object3D {
 				}
 				// Gather the draws for children
 				root.collectChildrenDraws(this, lights, lightsLength, root.useShadow);
-
 				// Mouse events prosessing
 				view.processMouseEvents(context3D, this);
 				// Render
@@ -405,7 +436,6 @@ public class Camera3D extends Object3D {
 		lights.length = 0;
 		childLights.length = 0;
 		occluders.length = 0;
-		context3D = null;
 	}
 	
 	/**
@@ -424,7 +454,7 @@ public class Camera3D extends Object3D {
 		var deltaX:Number = x - this.x;
 		var deltaY:Number = y - this.y;
 		var deltaZ:Number = z - this.z;
-		var rotX = Math.atan2(deltaZ, Math.sqrt(deltaX * deltaX + deltaY * deltaY));
+		var rotX:Number = Math.atan2(deltaZ, Math.sqrt(deltaX * deltaX + deltaY * deltaY));
 		rotationX = rotX - 0.5 * Math.PI;
 		rotationY = 0;
 		rotationZ =  -  Math.atan2(deltaX,deltaY);
--- a/src/alternativa/engine3d/core/Object3D.as
+++ b/src/alternativa/engine3d/core/Object3D.as
@@ -172,26 +172,53 @@ package alternativa.engine3d.core {
 	 */
 	public class Object3D implements IEventDispatcher {

+		// Mouse moving
+		private static const MOUSE_MOVE_BIT:uint = 1;
+		private static const MOUSE_OVER_BIT:uint = 2;
+		private static const MOUSE_OUT_BIT:uint = 4;
+		private static const ROLL_OVER_BIT:uint = 0x8;
+		private static const ROLL_OUT_BIT:uint = 0x10;
+		private static const USE_HAND_CURSOR_BIT:uint = 0x20;
+
+		// Mouse pressing
+		private static const MOUSE_DOWN_BIT:uint = 0x40;
+		private static const MOUSE_UP_BIT:uint = 0x80;
+		private static const CLICK_BIT:uint = 0x100;
+		private static const DOUBLE_CLICK_BIT:uint = 0x200;
+
+		// Mouse wheel
+		private static const MOUSE_WHEEL_BIT:uint = 0x400;
+
+		// Mouse middle button
+		private static const MIDDLE_CLICK_BIT:uint = 0x800;
+		private static const MIDDLE_MOUSE_DOWN_BIT:uint = 0x1000;
+		private static const MIDDLE_MOUSE_UP_BIT:uint = 0x2000;
+
+		// Mouse right button
+		private static const RIGHT_CLICK_BIT:uint = 0x4000;
+		private static const RIGHT_MOUSE_DOWN_BIT:uint = 0x8000;
+		private static const RIGHT_MOUSE_UP_BIT:uint = 0x10000;
+
 		/**
 		 * @private
 		 */
-		alternativa3d static const MOUSE_HANDLING_MOVING:uint = 1;
+		alternativa3d static const MOUSE_HANDLING_MOVING:uint = MOUSE_MOVE_BIT | MOUSE_OVER_BIT | MOUSE_OUT_BIT | ROLL_OVER_BIT | ROLL_OUT_BIT | USE_HAND_CURSOR_BIT;
 		/**
 		 * @private
 		 */
-		alternativa3d static const MOUSE_HANDLING_PRESSING:uint = 2;
+		alternativa3d static const MOUSE_HANDLING_PRESSING:uint = MOUSE_DOWN_BIT | MOUSE_UP_BIT | CLICK_BIT | DOUBLE_CLICK_BIT;
 		/**
 		 * @private
 		 */
-		alternativa3d static const MOUSE_HANDLING_WHEEL:uint = 4;
+		alternativa3d static const MOUSE_HANDLING_WHEEL:uint = MOUSE_WHEEL_BIT;
 		/**
 		 * @private
 		 */
-		alternativa3d static const MOUSE_HANDLING_MIDDLE_BUTTON:uint = 8;
+		alternativa3d static const MOUSE_HANDLING_MIDDLE_BUTTON:uint = MIDDLE_CLICK_BIT | MIDDLE_MOUSE_DOWN_BIT | MIDDLE_MOUSE_UP_BIT;
 		/**
 		 * @private
 		 */
-		alternativa3d static const MOUSE_HANDLING_RIGHT_BUTTON:uint = 16;
+		alternativa3d static const MOUSE_HANDLING_RIGHT_BUTTON:uint = RIGHT_CLICK_BIT | RIGHT_MOUSE_DOWN_BIT | RIGHT_MOUSE_UP_BIT;

 		/**
 		 * Custom data available to store within <code>Object3D</code> by user.
@@ -249,12 +276,6 @@ package alternativa.engine3d.core {
 		 */
 		public var doubleClickEnabled:Boolean = false;

-		/**
-		 * A Boolean value that indicates whether the pointing hand (hand cursor)
-		 * appears when the pointer rolls over a <code>Object3D</code>.
-		 */
-		public var useHandCursor:Boolean = false;
-
 		/**
 		 * Bounds of the object described as rectangular parallelepiped.
 		 */
@@ -587,6 +608,25 @@ package alternativa.engine3d.core {
 			transformChanged = true;
 		}

+		/**
+		 * A Boolean value that indicates whether the pointing hand (hand cursor)
+		 * appears when the pointer rolls over a <code>Object3D</code>.
+		 */
+		public function get useHandCursor():Boolean {
+			return (mouseHandlingType & USE_HAND_CURSOR_BIT) != 0;
+		}
+
+		/**
+		 * @private
+		 */
+		public function set useHandCursor(value:Boolean):void {
+			if (value) {
+				mouseHandlingType |= USE_HAND_CURSOR_BIT;
+			} else {
+				mouseHandlingType &= ~USE_HAND_CURSOR_BIT;
+			}
+		}
+
 		/**
 		 * Searches for the intersection of an <code>Object3D</code> and given ray, defined by <code>origin</code> and <code>direction</code>.
 		 *
@@ -739,20 +779,56 @@ package alternativa.engine3d.core {
 				vector = new Vector.<Function>();
 				listeners[type] = vector;

-				if (type == MouseEvent3D.MOUSE_MOVE || type == MouseEvent3D.MOUSE_OVER || type == MouseEvent3D.MOUSE_OUT || type == MouseEvent3D.ROLL_OVER || type == MouseEvent3D.ROLL_OUT) {
-					mouseHandlingType |= MOUSE_HANDLING_MOVING;
-				}
-				if (type == MouseEvent3D.MOUSE_DOWN || type == MouseEvent3D.MOUSE_UP || type == MouseEvent3D.CLICK || type == MouseEvent3D.DOUBLE_CLICK) {
-					mouseHandlingType |= MOUSE_HANDLING_PRESSING;
-				}
-				if (type == MouseEvent3D.MOUSE_WHEEL) {
-					mouseHandlingType |= MOUSE_HANDLING_WHEEL;
-				}
-				if (type == MouseEvent3D.MIDDLE_CLICK || type == MouseEvent3D.MIDDLE_MOUSE_DOWN || type == MouseEvent3D.MIDDLE_MOUSE_UP) {
-					mouseHandlingType |= MOUSE_HANDLING_MIDDLE_BUTTON;
-				}
-				if (type == MouseEvent3D.RIGHT_CLICK || type == MouseEvent3D.RIGHT_MOUSE_DOWN || type == MouseEvent3D.RIGHT_MOUSE_UP) {
-					mouseHandlingType |= MOUSE_HANDLING_RIGHT_BUTTON;
+				// update mouseHandlingType bits
+				switch (type) {
+					case MouseEvent3D.MOUSE_MOVE:
+						mouseHandlingType |= MOUSE_MOVE_BIT;
+						break;
+					case MouseEvent3D.MOUSE_OVER:
+						mouseHandlingType |= MOUSE_OVER_BIT;
+						break;
+					case MouseEvent3D.MOUSE_OUT:
+						mouseHandlingType |= MOUSE_OUT_BIT;
+						break;
+					case MouseEvent3D.ROLL_OVER:
+						mouseHandlingType |= ROLL_OVER_BIT;
+						break;
+					case MouseEvent3D.ROLL_OUT:
+						mouseHandlingType |= ROLL_OUT_BIT;
+						break;
+					case MouseEvent3D.MOUSE_DOWN:
+						mouseHandlingType |= MOUSE_DOWN_BIT;
+						break;
+					case MouseEvent3D.MOUSE_UP:
+						mouseHandlingType |= MOUSE_UP_BIT;
+						break;
+					case MouseEvent3D.CLICK:
+						mouseHandlingType |= CLICK_BIT;
+						break;
+					case MouseEvent3D.DOUBLE_CLICK:
+						mouseHandlingType |= DOUBLE_CLICK_BIT;
+						break;
+					case MouseEvent3D.MOUSE_WHEEL:
+						mouseHandlingType |= MOUSE_WHEEL_BIT;
+						break;
+					case MouseEvent3D.MIDDLE_CLICK:
+						mouseHandlingType |= MIDDLE_CLICK_BIT;
+						break;
+					case MouseEvent3D.MIDDLE_MOUSE_DOWN:
+						mouseHandlingType |= MIDDLE_MOUSE_DOWN_BIT;
+						break;
+					case MouseEvent3D.MIDDLE_MOUSE_UP:
+						mouseHandlingType |= MIDDLE_MOUSE_UP_BIT;
+						break;
+					case MouseEvent3D.RIGHT_CLICK:
+						mouseHandlingType |= RIGHT_CLICK_BIT;
+						break;
+					case MouseEvent3D.RIGHT_MOUSE_DOWN:
+						mouseHandlingType |= RIGHT_MOUSE_DOWN_BIT;
+						break;
+					case MouseEvent3D.RIGHT_MOUSE_UP:
+						mouseHandlingType |= RIGHT_MOUSE_UP_BIT;
+						break;
 				}
 			}
 			if (vector.indexOf(listener) < 0) {
@@ -781,7 +857,68 @@ package alternativa.engine3d.core {
 						if (length > 1) {
 							vector.length = length - 1;
 						} else {
+							// update mouseHandlingType bits
+							var noListeners:Boolean;
+							if (listeners == captureListeners) {
+								noListeners = (bubbleListeners == null || bubbleListeners[type] == null);
+							} else {
+								noListeners = (captureListeners == null || captureListeners[type] == null);
+							}
+							if (noListeners) {
+								switch (type) {
+									case MouseEvent3D.MOUSE_MOVE:
+										mouseHandlingType &= ~MOUSE_MOVE_BIT;
+										break;
+									case MouseEvent3D.MOUSE_OVER:
+										mouseHandlingType &= ~MOUSE_OVER_BIT;
+										break;
+									case MouseEvent3D.MOUSE_OUT:
+										mouseHandlingType &= ~MOUSE_OUT_BIT;
+										break;
+									case MouseEvent3D.ROLL_OVER:
+										mouseHandlingType &= ~ROLL_OVER_BIT;
+										break;
+									case MouseEvent3D.ROLL_OUT:
+										mouseHandlingType &= ~ROLL_OUT_BIT;
+										break;
+									case MouseEvent3D.MOUSE_DOWN:
+										mouseHandlingType &= ~MOUSE_DOWN_BIT;
+										break;
+									case MouseEvent3D.MOUSE_UP:
+										mouseHandlingType &= ~MOUSE_UP_BIT;
+										break;
+									case MouseEvent3D.CLICK:
+										mouseHandlingType &= ~CLICK_BIT;
+										break;
+									case MouseEvent3D.DOUBLE_CLICK:
+										mouseHandlingType &= ~DOUBLE_CLICK_BIT;
+										break;
+									case MouseEvent3D.MOUSE_WHEEL:
+										mouseHandlingType &= ~MOUSE_WHEEL_BIT;
+										break;
+									case MouseEvent3D.MIDDLE_CLICK:
+										mouseHandlingType &= ~MIDDLE_CLICK_BIT;
+										break;
+									case MouseEvent3D.MIDDLE_MOUSE_DOWN:
+										mouseHandlingType &= ~MIDDLE_MOUSE_DOWN_BIT;
+										break;
+									case MouseEvent3D.MIDDLE_MOUSE_UP:
+										mouseHandlingType &= ~MIDDLE_MOUSE_UP_BIT;
+										break;
+									case MouseEvent3D.RIGHT_CLICK:
+										mouseHandlingType &= ~RIGHT_CLICK_BIT;
+										break;
+									case MouseEvent3D.RIGHT_MOUSE_DOWN:
+										mouseHandlingType &= ~RIGHT_MOUSE_DOWN_BIT;
+										break;
+									case MouseEvent3D.RIGHT_MOUSE_UP:
+										mouseHandlingType &= ~RIGHT_MOUSE_UP_BIT;
+										break;
+								}
+							}
+
 							delete listeners[type];
+
 							var key:*;
 							for (key in listeners) break;
 							if (!key) {
@@ -791,21 +928,6 @@ package alternativa.engine3d.core {
 									bubbleListeners = null;
 								}
 							}
-							if (type == MouseEvent3D.MOUSE_MOVE || type == MouseEvent3D.MOUSE_OVER || type == MouseEvent3D.MOUSE_OUT || type == MouseEvent3D.ROLL_OVER || type == MouseEvent3D.ROLL_OUT) {
-								mouseHandlingType &= ~MOUSE_HANDLING_MOVING;
-							}
-							if (type == MouseEvent3D.MOUSE_DOWN || type == MouseEvent3D.MOUSE_UP || type == MouseEvent3D.CLICK || type == MouseEvent3D.DOUBLE_CLICK) {
-								mouseHandlingType &= ~MOUSE_HANDLING_PRESSING;
-							}
-							if (type == MouseEvent3D.MOUSE_WHEEL) {
-								mouseHandlingType &= ~MOUSE_HANDLING_WHEEL;
-							}
-							if (type == MouseEvent3D.MIDDLE_CLICK || type == MouseEvent3D.MIDDLE_MOUSE_DOWN || type == MouseEvent3D.MIDDLE_MOUSE_UP) {
-								mouseHandlingType &= ~MOUSE_HANDLING_MIDDLE_BUTTON;
-							}
-							if (type == MouseEvent3D.RIGHT_CLICK || type == MouseEvent3D.RIGHT_MOUSE_DOWN || type == MouseEvent3D.RIGHT_MOUSE_UP) {
-								mouseHandlingType &= ~MOUSE_HANDLING_RIGHT_BUTTON;
-							}
 						}
 					}
 				}
@@ -1401,7 +1523,7 @@ package alternativa.engine3d.core {
 					// Calculating matrix for converting from local coordinates to  camera coordinates
 					child.localToCameraTransform.combine(localToCameraTransform, child.transform);

-					if (child.mouseEnabled) camera.globalMouseHandlingType |= child.mouseHandlingType;
+					camera.globalMouseHandlingType |= child.mouseHandlingType;
 					// Culling checking
 					if (child.boundBox != null) {
 						camera.calculateFrustum(child.cameraToLocalTransform);
@@ -1531,7 +1653,12 @@ package alternativa.engine3d.core {


 		/**
-		 * Toggle off light source from litting this object
+		 * Disables lighting of the object by given <code>light</code>.
+         *
+         * @param light Light which should not affect to the object
+         * @param updateChildren If <code>true</code> all children of this object will be also shielded from the given light.
+         * @see  #excludedLights()
+         * @see  #clearExcludedLights()
 		 */
 		public function excludeLight(light:Light3D, updateChildren:Boolean = false):void{
 			if (_excludedLights.indexOf(light) < 0) {
@@ -1552,7 +1679,7 @@ package alternativa.engine3d.core {
 		}

 		/**
-		 * Resets list of lights excluded from litting this object
+		 * Resets list of lights excluded from lighting this object.
 		 */
 		public function clearExcludedLights(updateChildren:Boolean = false):void {
 			_excludedLights.length = 0;
@@ -1564,7 +1691,7 @@ package alternativa.engine3d.core {
 		}

 		/**
-		 * Returns a copy of object
+		 * Returns a copy of object.
 		 * @return A copy of this <code>Object3D</code>.
 		 */
 		public function clone():Object3D {
@@ -1614,7 +1741,8 @@ package alternativa.engine3d.core {
 		 */
 		public function toString():String {
 			var className:String = getQualifiedClassName(this);
-			return "[" + className.substr(className.indexOf("::") + 2) + " " + name + "]";
+			var start:int = className.indexOf("::");
+			return "[" + (start < 0 ? className : className.substr(start + 2)) + " " + name + "]";
 		}

 	}
--- a/src/alternativa/engine3d/core/Renderer.as
+++ b/src/alternativa/engine3d/core/Renderer.as
@@ -4,8 +4,8 @@
 * You may add additional accurate notices of copyright ownership.
 *
 * It is desirable to notify that Covered Software was "Powered by AlternativaPlatform" with link to http://www.alternativaplatform.com/ 
- * */
-
+ *
+ */
 package alternativa.engine3d.core {

 	import alternativa.engine3d.alternativa3d;
@@ -16,7 +16,6 @@ package alternativa.engine3d.core {
 	import flash.display3D.Context3DProgramType;
 	import flash.display3D.IndexBuffer3D;
 	import flash.display3D.Program3D;
-	import flash.utils.Dictionary;

 	use namespace alternativa3d;

@@ -37,9 +36,6 @@ package alternativa.engine3d.core {

 		public static const NEXT_LAYER:int = 50;

-		// Key - context, value - properties.
-		protected static var properties:Dictionary = new Dictionary(true);
-
 		// Collector
 		protected var collector:DrawUnit;

@@ -47,7 +43,6 @@ package alternativa.engine3d.core {

 		alternativa3d var drawUnits:Vector.<DrawUnit> = new Vector.<DrawUnit>();

-		protected var _context3D:Context3D;
 		protected var _contextProperties:RendererContext3DProperties;

 		alternativa3d function render(context3D:Context3D):void {
@@ -59,29 +54,29 @@ package alternativa.engine3d.core {
 				if (list != null) {
 					switch (i) {
 						case SKY:
-							_context3D.setDepthTest(false, Context3DCompareMode.ALWAYS);
+							context3D.setDepthTest(false, Context3DCompareMode.ALWAYS);
 							break;
 						case OPAQUE:
-							_context3D.setDepthTest(true, Context3DCompareMode.LESS);
+							context3D.setDepthTest(true, Context3DCompareMode.LESS);
 							break;
 						case OPAQUE_OVERHEAD:
-							_context3D.setDepthTest(false, Context3DCompareMode.EQUAL);
+							context3D.setDepthTest(false, Context3DCompareMode.EQUAL);
 							break;
 						case DECALS:
-							_context3D.setDepthTest(false, Context3DCompareMode.LESS_EQUAL);
+							context3D.setDepthTest(false, Context3DCompareMode.LESS_EQUAL);
 							break;
 						case TRANSPARENT_SORT:
 							if (list.next != null) list = sortByAverageZ(list);
-							_context3D.setDepthTest(false, Context3DCompareMode.LESS);
+							context3D.setDepthTest(false, Context3DCompareMode.LESS);
 							break;
 						case NEXT_LAYER:
-							_context3D.setDepthTest(false, Context3DCompareMode.ALWAYS);
+							context3D.setDepthTest(false, Context3DCompareMode.ALWAYS);
 							break;
 					}
 					// Rendering
 					while (list != null) {
 						var next:DrawUnit = list.next;
-						renderDrawUnit(list, _context3D, camera);
+						renderDrawUnit(list, context3D, camera);
 						// Send to collector
 						list.clear();
 						list.next = collector;
@@ -90,6 +85,7 @@ package alternativa.engine3d.core {
 					}
 				}
 			}
+			// TODO: not free buffers and textures in each renderer, only when full camera cycle finishes.
 			freeContext3DProperties(context3D);
 			// Clear
 			drawUnits.length = 0;
@@ -180,14 +176,7 @@ package alternativa.engine3d.core {
 		}

 		protected function updateContext3D(value:Context3D):void {
-			if (_context3D != value) {
-				_contextProperties = properties[value];
-				if (_contextProperties == null) {
-					_contextProperties = new RendererContext3DProperties();
-					properties[value] = _contextProperties;
-				}
-				_context3D = value;
-			}
+			_contextProperties = camera.context3DProperties;
 		}

 		/**
--- a/src/alternativa/engine3d/core/RendererContext3DProperties.as
+++ b/src/alternativa/engine3d/core/RendererContext3DProperties.as
@@ -8,7 +8,11 @@

 package alternativa.engine3d.core {

+	import alternativa.engine3d.materials.ShaderProgram;
+	import alternativa.engine3d.resources.Geometry;
+
 	import flash.display3D.Program3D;
+	import flash.utils.Dictionary;

 	/**
 	 * @private
@@ -16,6 +20,12 @@ package alternativa.engine3d.core {
 	 */
 	public class RendererContext3DProperties {

+		public var isConstrained:Boolean = false;
+
+		public var backBufferWidth:int = -1;
+		public var backBufferHeight:int = -1;
+		public var backBufferAntiAlias:int = -1;
+
 		public var usedBuffers:uint = 0;
 		public var usedTextures:uint = 0;

@@ -24,5 +34,11 @@ package alternativa.engine3d.core {
 		public var blendSource:String;
 		public var blendDestination:String;

+		// View: mouse events
+		// Key - vertex program of object, value - program.
+		public var drawDistancePrograms:Dictionary = new Dictionary();
+		public var drawColoredRectProgram:ShaderProgram;
+		public var drawRectGeometry:Geometry;
+
 	}
 }
--- a/src/alternativa/engine3d/core/View.as
+++ b/src/alternativa/engine3d/core/View.as
@@ -61,10 +61,6 @@ package alternativa.engine3d.core {

 		private static const renderEvent:MouseEvent = new MouseEvent("render");

-		private static var properties:Dictionary = new Dictionary(true);
-		private var cachedContext3D:Context3D;
-		private var context3DProperties:Context3DViewProperties;
-
 		static private var drawDistanceFragment:Linker;
 		static private var drawDistanceVertexProcedure:Procedure;

@@ -309,6 +305,11 @@ package alternativa.engine3d.core {
 			addEventListener(Event.REMOVED_FROM_STAGE, onRemoveFromStage);
 		}

+        /**
+         * If <code>true</code>, you will able to handle following events <code>MouseEvent3D.RIGHT_CLICK</code>,
+         * <code>MouseEvent3D.RIGHT_MOUSE_DOWN</code>, <code>MouseEvent3D.RIGHT_MOUSE_UP</code>.
+         * The context menu will no longer open on clicking right mouse button.
+         */
 		public function get rightClick3DEnabled():Boolean {
 			return _rightClick3DEnabled;
 		}
@@ -533,7 +534,7 @@ package alternativa.engine3d.core {
 		/**
 		 * @private
 		 */
-		alternativa3d function prepareToRender(stage3D:Stage3D, context:Context3D):void {
+		alternativa3d function configureContext3D(stage3D:Stage3D, context3D:Context3D, camera:Camera3D):void {
 			if (_canvas == null) {
 				var vis:Boolean = this.visible;
 				for (var parent:DisplayObject = this.parent; parent != null; parent = parent.parent) {
@@ -553,70 +554,55 @@ package alternativa.engine3d.core {
 					createRenderBitmap();
 				}
 			}
-			if (context != cachedContext3D) {
-				// Get properties.
-				cachedContext3D = context;
-				context3DProperties = properties[cachedContext3D];
-				if (context3DProperties == null) {
-					context3DProperties = new Context3DViewProperties();
-					// Inititalize data for mouse events
-					var rectGeometry:Geometry = new Geometry(4);
-					rectGeometry.addVertexStream([VertexAttributes.POSITION, VertexAttributes.POSITION, VertexAttributes.POSITION, VertexAttributes.TEXCOORDS[0], VertexAttributes.TEXCOORDS[0]]);
-					rectGeometry.setAttributeValues(VertexAttributes.POSITION, Vector.<Number>([0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1]));
-					rectGeometry.setAttributeValues(VertexAttributes.TEXCOORDS[0], Vector.<Number>([0, 0, 0, 1, 1, 1, 1, 0]));
-					rectGeometry.indices = Vector.<uint>([0, 1, 3, 2, 3, 1]);
-					rectGeometry.upload(context);
-					var vLinker:Linker = new Linker(Context3DProgramType.VERTEX);
-					vLinker.addProcedure(Procedure.compileFromArray([
-						"#a0=a0",
-						"#c0=c0",
-						"mul t0.x, a0.x, c0.x",
-						"mul t0.y, a0.y, c0.y",
-						"add o0.x, t0.x, c0.z",
-						"add o0.y, t0.y, c0.w",
-						"mov o0.z, a0.z",
-						"mov o0.w, a0.z",
-					]));
-					var fLinker:Linker = new Linker(Context3DProgramType.FRAGMENT);
-					fLinker.addProcedure(Procedure.compileFromArray([
-						"#c0=c0",
-						"mov o0, c0",
-					]));
-					var coloredRectProgram:ShaderProgram = new ShaderProgram(vLinker, fLinker);
-					coloredRectProgram.upload(context);
+			var context3DProperties:RendererContext3DProperties = camera.context3DProperties;
+			if (context3DProperties.drawRectGeometry == null) {
+				// Inititalize data for mouse events
+				var rectGeometry:Geometry = new Geometry(4);
+				rectGeometry.addVertexStream([VertexAttributes.POSITION, VertexAttributes.POSITION, VertexAttributes.POSITION, VertexAttributes.TEXCOORDS[0], VertexAttributes.TEXCOORDS[0]]);
+				rectGeometry.setAttributeValues(VertexAttributes.POSITION, Vector.<Number>([0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1]));
+				rectGeometry.setAttributeValues(VertexAttributes.TEXCOORDS[0], Vector.<Number>([0, 0, 0, 1, 1, 1, 1, 0]));
+				rectGeometry.indices = Vector.<uint>([0, 1, 3, 2, 3, 1]);
+				rectGeometry.upload(context3D);
+				var vLinker:Linker = new Linker(Context3DProgramType.VERTEX);
+				vLinker.addProcedure(Procedure.compileFromArray([
+					"#a0=a0",
+					"#c0=c0",
+					"mul t0.x, a0.x, c0.x",
+					"mul t0.y, a0.y, c0.y",
+					"add o0.x, t0.x, c0.z",
+					"add o0.y, t0.y, c0.w",
+					"mov o0.z, a0.z",
+					"mov o0.w, a0.z",
+				]));
+				var fLinker:Linker = new Linker(Context3DProgramType.FRAGMENT);
+				fLinker.addProcedure(Procedure.compileFromArray([
+					"#c0=c0",
+					"mov o0, c0",
+				]));
+				var coloredRectProgram:ShaderProgram = new ShaderProgram(vLinker, fLinker);
+				coloredRectProgram.upload(context3D);

-					context3DProperties.drawRectGeometry = rectGeometry;
-					context3DProperties.drawColoredRectProgram = coloredRectProgram;
-					properties[cachedContext3D] = context3DProperties;
-				}
+				context3DProperties.drawRectGeometry = rectGeometry;
+				context3DProperties.drawColoredRectProgram = coloredRectProgram;
 			}
 			if (_width != context3DProperties.backBufferWidth || _height != context3DProperties.backBufferHeight || antiAlias != context3DProperties.backBufferAntiAlias) {
 				context3DProperties.backBufferWidth = _width;
 				context3DProperties.backBufferHeight = _height;
 				context3DProperties.backBufferAntiAlias = antiAlias;
-				context.configureBackBuffer(_width, _height, antiAlias);
+				context3D.configureBackBuffer(_width, _height, antiAlias);
 			}
-			var r:Number = ((backgroundColor >> 16) & 0xff)/0xff;
-			var g:Number = ((backgroundColor >> 8) & 0xff)/0xff;
-			var b:Number = (backgroundColor & 0xff)/0xff;
-			if (canvas != null) {
-				r *= backgroundAlpha;
-				g *= backgroundAlpha;
-				b *= backgroundAlpha;
-			}
-			context.clear(r, g, b, backgroundAlpha);
 		}

 		/**
 		 * @private
 		 */
-		alternativa3d function processMouseEvents(context:Context3D, camera:Camera3D):void {
+		alternativa3d function processMouseEvents(context3D:Context3D, camera:Camera3D):void {
 			var i:int;
 			// Mouse events
 			if (eventsLength > 0) {
 				if (surfacesLength > 0) {
 					// Calculating the depth
-					calculateSurfacesDepths(context, camera, _width, _height);
+					calculateSurfacesDepths(context3D, camera, _width, _height);
 					// Sorting by decreasing the depth
 					for (i = 0; i < raysLength; i++) {
 						var raySurfaces:Vector.<Surface> = raysSurfaces[i];
@@ -776,8 +762,8 @@ package alternativa.engine3d.core {
 			context.setVertexBufferAt(6, null);
 			context.setVertexBufferAt(7, null);

-			var drawRectGeometry:Geometry = context3DProperties.drawRectGeometry;
-			var drawColoredRectProgram:ShaderProgram = context3DProperties.drawColoredRectProgram;
+			var drawRectGeometry:Geometry = camera.context3DProperties.drawRectGeometry;
+			var drawColoredRectProgram:ShaderProgram = camera.context3DProperties.drawColoredRectProgram;

 			// Rectangle
 			var vLinker:Linker, fLinker:Linker;
@@ -883,7 +869,7 @@ package alternativa.engine3d.core {
 			var procedure:Procedure = procedures[index];
 			var object:Object3D = surface.object;
 			// Program
-			var drawDistanceProgram:ShaderProgram = context3DProperties.drawDistancePrograms[procedure];
+			var drawDistanceProgram:ShaderProgram = camera.context3DProperties.drawDistancePrograms[procedure];
 			if (drawDistanceProgram == null) {
 				// Assembling the vertex shader
 				var vertex:Linker = new Linker(Context3DProgramType.VERTEX);
@@ -902,7 +888,7 @@ package alternativa.engine3d.core {
 				drawDistanceProgram = new ShaderProgram(vertex, drawDistanceFragment);
 				drawDistanceProgram.fragmentShader.varyings = drawDistanceProgram.vertexShader.varyings;
 				drawDistanceProgram.upload(context);
-				context3DProperties.drawDistancePrograms[procedure] = drawDistanceProgram;
+				camera.context3DProperties.drawDistancePrograms[procedure] = drawDistanceProgram;
 			}
 			var buffer:VertexBuffer3D = geometry.getVertexBuffer(VertexAttributes.POSITION);
 			if (buffer == null) return;
@@ -1405,9 +1391,6 @@ package alternativa.engine3d.core {
 	}
 }

-import alternativa.engine3d.materials.ShaderProgram;
-import alternativa.engine3d.resources.Geometry;
-
 import flash.display.BitmapData;
 import flash.display.Sprite;
 import flash.events.MouseEvent;
@@ -1415,7 +1398,6 @@ import flash.geom.ColorTransform;
 import flash.geom.Matrix;
 import flash.net.URLRequest;
 import flash.net.navigateToURL;
-import flash.utils.Dictionary;

 class Logo extends Sprite {

@@ -1513,17 +1495,3 @@ class Logo extends Sprite {
 	}

 }
-
-class Context3DViewProperties {
-	public var backBufferWidth:int = -1;
-	public var backBufferHeight:int = -1;
-	public var backBufferAntiAlias:int = -1;
-
-	// Mouse events
-
-	// Key - vertex program of object, value - program.
-	public var drawDistancePrograms:Dictionary = new Dictionary();
-	public var drawColoredRectProgram:ShaderProgram;
-	public var drawRectGeometry:Geometry;
-
-}
--- a/src/alternativa/engine3d/materials/EnvironmentMaterial.as
+++ b/src/alternativa/engine3d/materials/EnvironmentMaterial.as
@@ -310,6 +310,15 @@ package alternativa.engine3d.materials {
 			"mov v0, a0"
 		], "passLightMapUVProcedure");

+		/**
+		 * @private
+		 */
+		alternativa3d static var fallbackTextureMaterial:TextureMaterial = new TextureMaterial();
+		/**
+		 * @private
+		 */
+		alternativa3d static var fallbackLightMapMaterial:LightMapMaterial = new LightMapMaterial();
+
 		private var _normalMapSpace:int = NormalMapSpace.TANGENT_RIGHT_HANDED;

 		/**
@@ -815,6 +824,31 @@ package alternativa.engine3d.materials {
 			if (_normalMap != null && _normalMap._texture == null) return;
 			if (_reflectionMap != null && _reflectionMap._texture == null) return;
 			if (_lightMap != null && _lightMap._texture == null) return;
+
+			if (camera.context3DProperties.isConstrained) {
+				// fallback to simpler material
+				if (lightMap == null) {
+					fallbackTextureMaterial.diffuseMap = diffuseMap;
+					fallbackTextureMaterial.opacityMap = opacityMap;
+					fallbackTextureMaterial.alphaThreshold = alphaThreshold;
+					fallbackTextureMaterial.alpha = alpha;
+					fallbackTextureMaterial.opaquePass = opaquePass;
+					fallbackTextureMaterial.transparentPass = transparentPass;
+					fallbackTextureMaterial.collectDraws(camera, surface, geometry, lights, lightsLength, useShadow, objectRenderPriority);
+				} else {
+					fallbackLightMapMaterial.diffuseMap = diffuseMap;
+					fallbackLightMapMaterial.lightMap = lightMap;
+					fallbackLightMapMaterial.lightMapChannel = lightMapChannel;
+					fallbackLightMapMaterial.opacityMap = opacityMap;
+					fallbackLightMapMaterial.alphaThreshold = alphaThreshold;
+					fallbackLightMapMaterial.alpha = alpha;
+					fallbackLightMapMaterial.opaquePass = opaquePass;
+					fallbackLightMapMaterial.transparentPass = transparentPass;
+					fallbackLightMapMaterial.collectDraws(camera, surface, geometry, lights, lightsLength, useShadow, objectRenderPriority);
+				}
+				return;
+			}
+
 			var object:Object3D = surface.object;

 			// Program
--- a/src/alternativa/engine3d/materials/StandardMaterial.as
+++ b/src/alternativa/engine3d/materials/StandardMaterial.as
@@ -307,6 +307,15 @@ package alternativa.engine3d.materials {
 			"mov v0, a0"
 		], "passLightMapUVProcedure");

+		/**
+		 * @private
+		 */
+		alternativa3d static var fallbackTextureMaterial:TextureMaterial = new TextureMaterial();
+		/**
+		 * @private
+		 */
+		alternativa3d static var fallbackLightMapMaterial:LightMapMaterial = new LightMapMaterial();
+
 		/**
 		 * Normal map.
 		 */
@@ -986,6 +995,30 @@ package alternativa.engine3d.materials {
 			// Check if textures uploaded in to the context.
 			if (opacityMap != null && opacityMap._texture == null || glossinessMap != null && glossinessMap._texture == null || specularMap != null && specularMap._texture == null || lightMap != null && lightMap._texture == null) return;

+			if (camera.context3DProperties.isConstrained) {
+				// fallback to simpler material
+				if (lightMap == null) {
+					fallbackTextureMaterial.diffuseMap = diffuseMap;
+					fallbackTextureMaterial.opacityMap = opacityMap;
+					fallbackTextureMaterial.alphaThreshold = alphaThreshold;
+					fallbackTextureMaterial.alpha = alpha;
+					fallbackTextureMaterial.opaquePass = opaquePass;
+					fallbackTextureMaterial.transparentPass = transparentPass;
+					fallbackTextureMaterial.collectDraws(camera, surface, geometry, lights, lightsLength, useShadow, objectRenderPriority);
+				} else {
+					fallbackLightMapMaterial.diffuseMap = diffuseMap;
+					fallbackLightMapMaterial.lightMap = lightMap;
+					fallbackLightMapMaterial.lightMapChannel = lightMapChannel;
+					fallbackLightMapMaterial.opacityMap = opacityMap;
+					fallbackLightMapMaterial.alphaThreshold = alphaThreshold;
+					fallbackLightMapMaterial.alpha = alpha;
+					fallbackLightMapMaterial.opaquePass = opaquePass;
+					fallbackLightMapMaterial.transparentPass = transparentPass;
+					fallbackLightMapMaterial.collectDraws(camera, surface, geometry, lights, lightsLength, useShadow, objectRenderPriority);
+				}
+				return;
+			}
+
 			var object:Object3D = surface.object;

 			// Buffers
--- a/src/alternativa/engine3d/materials/TextureMaterial.as
+++ b/src/alternativa/engine3d/materials/TextureMaterial.as
@@ -34,7 +34,7 @@ package alternativa.engine3d.materials {
 	use namespace alternativa3d;

 	/**
-	 * The materiall fills surface with bitmap image in light-independent manner. Can draw a Skin with no more than 41 Joints per surface. See Skin.divide() for more details.
+	 * The material fills surface with bitmap image in light-independent manner. Can draw a Skin with no more than 41 Joints per surface. See Skin.divide() for more details.
 	 * 
 	 * To be drawn with this material, geometry shoud have UV coordinates.
 	 * @see alternativa.engine3d.objects.Skin#divide()
@@ -113,19 +113,19 @@ package alternativa.engine3d.materials {
 		public var opacityMap:TextureResource;
 		
 		/**
-		 *  If <code>true</code>, perform transparent pass. Parts of surface, cumulative alpha value of which is below than  <code>alphaThreshold</code> draw within transparent pass.
+		 *  If <code>true</code>, perform transparent pass. Parts of surface, cumulative alpha value of which is below than  <code>alphaThreshold</code> will be drawn within transparent pass.
 		 * @see #alphaThreshold
 		 */
 		public var transparentPass:Boolean = true;
 		
 		/**
-		 * If <code>true</code>, perform opaque pass. Parts of surface, cumulative alpha value of which is greater or equal than  <code>alphaThreshold</code> draw within opaque pass.
+		 * If <code>true</code>, perform opaque pass. Parts of surface, cumulative alpha value of which is greater or equal than  <code>alphaThreshold</code> will be drawn within opaque pass.
 		 * @see #alphaThreshold
 		 */
 		public var opaquePass:Boolean = true;
 		
 		/**
-		 * alphaThreshold defines starts from which value of alpha a fragment of surface will get into transparent pass.
+		 * alphaThreshold defines starts from which value of alpha a fragment of the surface will get into transparent pass.
 		 * @see #transparentPass
 		 * @see #opaquePass
 		 */
--- a/src/alternativa/engine3d/materials/VertexLightTextureMaterial.as
+++ b/src/alternativa/engine3d/materials/VertexLightTextureMaterial.as
@@ -98,6 +98,11 @@ package alternativa.engine3d.materials {

 		private static const _lightsProcedures:Dictionary = new Dictionary(true);

+		/**
+		 * @private
+		 */
+		alternativa3d static var fallbackMaterial:TextureMaterial = new TextureMaterial();
+
 		/**
 		 * Creates a new VertexLightTextureMaterial instance.
 		 *
@@ -282,6 +287,18 @@ package alternativa.engine3d.materials {
 		override alternativa3d function collectDraws(camera:Camera3D, surface:Surface, geometry:Geometry, lights:Vector.<Light3D>, lightsLength:int, useShadow:Boolean, objectRenderPriority:int = -1):void {
 			if (diffuseMap == null || diffuseMap._texture == null || opacityMap != null && opacityMap._texture == null) return;

+			if (camera.context3DProperties.isConstrained) {
+				// fallback to texture material
+				fallbackMaterial.diffuseMap = diffuseMap;
+				fallbackMaterial.opacityMap = opacityMap;
+				fallbackMaterial.alphaThreshold = alphaThreshold;
+				fallbackMaterial.alpha = alpha;
+				fallbackMaterial.opaquePass = opaquePass;
+				fallbackMaterial.transparentPass = transparentPass;
+				fallbackMaterial.collectDraws(camera, surface, geometry, lights, lightsLength, useShadow, objectRenderPriority);
+				return;
+			}
+
 			var object:Object3D = surface.object;

 			// Buffers
--- a/src/alternativa/engine3d/objects/LOD.as
+++ b/src/alternativa/engine3d/objects/LOD.as
@@ -176,6 +176,7 @@ package alternativa.engine3d.objects {
 		 * @private
 		 */
 		override alternativa3d function calculateVisibility(camera:Camera3D):void {
+			// TODO: optimize - use square of distance
 			var distance:Number = Math.sqrt(localToCameraTransform.d*localToCameraTransform.d + localToCameraTransform.h*localToCameraTransform.h + localToCameraTransform.l*localToCameraTransform.l);
 			for (level = levelList; level != null; level = level.next) {
 				if (distance <= level.distance) {
@@ -196,7 +197,7 @@ package alternativa.engine3d.objects {
 			// Calculation of transfer matrix from local space to camera.
 			child.localToCameraTransform.combine(parent.localToCameraTransform, child.transform);

-			if (child.mouseEnabled) camera.globalMouseHandlingType |= child.mouseHandlingType;
+			camera.globalMouseHandlingType |= child.mouseHandlingType;
 			// Pass
 			child.culling = parent.culling;
 			// Calculating visibility of the self content
--- a/src/alternativa/engine3d/objects/SkyBox.as
+++ b/src/alternativa/engine3d/objects/SkyBox.as
@@ -80,7 +80,7 @@ package alternativa.engine3d.objects {
 		private var bottomSurface:Surface;
 		private var topSurface:Surface;
 		
-		private var size:Number;
+		private var halfSize:Number;

 		/**
 		 * Creates a new SkyBox instance.
@@ -95,10 +95,7 @@ package alternativa.engine3d.objects {
 		 * @see alternativa.engine3d.materials.Material
 		 */
 		public function SkyBox(size:Number, left:Material = null, right:Material = null, back:Material = null, front:Material = null, bottom:Material = null, top:Material = null, uvPadding:Number = 0) {
-			
-			size *= 0.5;
-			
-			this.size = size;
+			this.halfSize = size*0.5;

 			geometry = new Geometry(24);

@@ -111,35 +108,35 @@ package alternativa.engine3d.objects {
 			geometry.addVertexStream(attributes);

 			geometry.setAttributeValues(VertexAttributes.POSITION, Vector.<Number>([
-				-size, -size, size,
-				-size, -size, -size,
-				-size, size, -size,
-				-size, size, size,
+				-halfSize, -halfSize, halfSize,
+				-halfSize, -halfSize, -halfSize,
+				-halfSize, halfSize, -halfSize,
+				-halfSize, halfSize, halfSize,

-				size, size, size,
-				size, size, -size,
-				size, -size, -size,
-				size, -size, size,
+				halfSize, halfSize, halfSize,
+				halfSize, halfSize, -halfSize,
+				halfSize, -halfSize, -halfSize,
+				halfSize, -halfSize, halfSize,

-				size, -size, size,
-				size, -size, -size,
-				-size, -size, -size,
-				-size, -size, size,
+				halfSize, -halfSize, halfSize,
+				halfSize, -halfSize, -halfSize,
+				-halfSize, -halfSize, -halfSize,
+				-halfSize, -halfSize, halfSize,
 				
-				-size, size, size,
-				-size, size, -size,
-				size, size, -size,
-				size, size, size,
+				-halfSize, halfSize, halfSize,
+				-halfSize, halfSize, -halfSize,
+				halfSize, halfSize, -halfSize,
+				halfSize, halfSize, halfSize,
 				
-				-size, size, -size,
-				-size, -size, -size,
-				size, -size, -size,
-				size, size, -size,
+				-halfSize, halfSize, -halfSize,
+				-halfSize, -halfSize, -halfSize,
+				halfSize, -halfSize, -halfSize,
+				halfSize, halfSize, -halfSize,
 				
-				-size, -size, size,
-				-size, size, size,
-				size, size, size,
-				size, -size, size
+				-halfSize, -halfSize, halfSize,
+				-halfSize, halfSize, halfSize,
+				halfSize, halfSize, halfSize,
+				halfSize, -halfSize, halfSize
 			]));
 			
 			geometry.setAttributeValues(VertexAttributes.TEXCOORDS[0], Vector.<Number>([
@@ -214,44 +211,44 @@ package alternativa.engine3d.objects {
 			var dy:Number;
 			var dz:Number;
 			var len:Number;
-			dx = -size - cameraToLocalTransform.d;
-			dy = -size - cameraToLocalTransform.h;
-			dz = -size - cameraToLocalTransform.l;
+			dx = -halfSize - cameraToLocalTransform.d;
+			dy = -halfSize - cameraToLocalTransform.h;
+			dz = -halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
-			dx = size - cameraToLocalTransform.d;
-			dy = -size - cameraToLocalTransform.h;
-			dz = -size - cameraToLocalTransform.l;
+			dx = halfSize - cameraToLocalTransform.d;
+			dy = -halfSize - cameraToLocalTransform.h;
+			dz = -halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
-			dx = size - cameraToLocalTransform.d;
-			dy = size - cameraToLocalTransform.h;
-			dz = -size - cameraToLocalTransform.l;
+			dx = halfSize - cameraToLocalTransform.d;
+			dy = halfSize - cameraToLocalTransform.h;
+			dz = -halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
-			dx = -size - cameraToLocalTransform.d;
-			dy = size - cameraToLocalTransform.h;
-			dz = -size - cameraToLocalTransform.l;
+			dx = -halfSize - cameraToLocalTransform.d;
+			dy = halfSize - cameraToLocalTransform.h;
+			dz = -halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
-			dx = -size - cameraToLocalTransform.d;
-			dy = -size - cameraToLocalTransform.h;
-			dz = size - cameraToLocalTransform.l;
+			dx = -halfSize - cameraToLocalTransform.d;
+			dy = -halfSize - cameraToLocalTransform.h;
+			dz = halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
-			dx = size - cameraToLocalTransform.d;
-			dy = -size - cameraToLocalTransform.h;
-			dz = size - cameraToLocalTransform.l;
+			dx = halfSize - cameraToLocalTransform.d;
+			dy = -halfSize - cameraToLocalTransform.h;
+			dz = halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
-			dx = size - cameraToLocalTransform.d;
-			dy = size - cameraToLocalTransform.h;
-			dz = size - cameraToLocalTransform.l;
+			dx = halfSize - cameraToLocalTransform.d;
+			dy = halfSize - cameraToLocalTransform.h;
+			dz = halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
-			dx = -size - cameraToLocalTransform.d;
-			dy = size - cameraToLocalTransform.h;
-			dz = size - cameraToLocalTransform.l;
+			dx = -halfSize - cameraToLocalTransform.d;
+			dy = halfSize - cameraToLocalTransform.h;
+			dz = halfSize - cameraToLocalTransform.l;
 			len = dx*dx + dy*dy + dz*dz;
 			if (len > max) max = len;
 			drawUnit.setVertexConstantsFromNumbers(0, cameraToLocalTransform.d, cameraToLocalTransform.h, cameraToLocalTransform.l, camera.farClipping/Math.sqrt(max));
--- a/src/alternativa/engine3d/resources/BitmapTextureResource.as
+++ b/src/alternativa/engine3d/resources/BitmapTextureResource.as
@@ -45,9 +45,9 @@ package alternativa.engine3d.resources {
        /**
         * Uploads textures from <code>BitmapData</code> to GPU.
         */
-		public function BitmapTextureResource(data:BitmapData, resizeToPowerOfTwo:Boolean = false) {
+		public function BitmapTextureResource(data:BitmapData, resizeForGPU:Boolean = false) {
 			this.data = data;
-			this.resizeForGPU = resizeToPowerOfTwo;
+			this.resizeForGPU = resizeForGPU;
 		}

 		/**
@@ -58,7 +58,6 @@ package alternativa.engine3d.resources {
 			if (data != null) {
 				var source:BitmapData = data;
 				if (resizeForGPU) {
-					// TODO: test this
 					var wLog2Num:Number = Math.log(data.width)/Math.LN2;
 					var hLog2Num:Number = Math.log(data.height)/Math.LN2;
 					var wLog2:int = Math.ceil(wLog2Num);
--- a/src/alternativa/engine3d/shadows/DirectionalLightShadow.as
+++ b/src/alternativa/engine3d/shadows/DirectionalLightShadow.as
@@ -43,9 +43,9 @@ package alternativa.engine3d.shadows {
 	use namespace alternativa3d;

 	/**
-	 * Class of shadow, that is created by one  source of light(<code>DirectionalLight</code>). Shadow is rendered in fixed volume.
+	 * Class of the shadow, that is created by one  source of light(<code>DirectionalLight</code>). Shadow is rendered in fixed volume.
 	 * For binding of shadow to light source you need:
-	 * 1) to set <code>DirectionalLightShadow</code> as a value of property <code>shadow</code> of light source;
+	 * 1) to set instance of the <code>DirectionalLightShadow</code> as a value of property <code>shadow</code> of light source;
 	 * 2) to add <code>Object3D</code> to corresponding list, using the method <code>addCaster()</code>.
 	 *
 	 * @see #addCaster()
@@ -820,7 +820,7 @@ package alternativa.engine3d.shadows {
 		}

 		/**
-		 * Clears the list of objects, that cast shadow.
+		 * Clears the list of objects, which cast shadow.
 		 */
 		public function clearCasters():void {
 			_casters.length = 0;
--- a/src/alternativa/engine3d/shadows/OmniLightShadow.as
+++ b/src/alternativa/engine3d/shadows/OmniLightShadow.as
@@ -40,7 +40,18 @@ package alternativa.engine3d.shadows {

 	use namespace alternativa3d;

-	public class OmniLightShadow extends Shadow{
+	/**
+	 * Class of the shadow, that is created by one  source of light(<code>OmniLight</code>). Shadow is rendered in fixed volume.
+	 * For binding of shadow to light source you need:
+	 * 1) to set  instance of the <code>OmniLight</code> as a value of property <code>shadow</code> of light source;
+	 * 2) to add <code>Object3D</code> to corresponding list, using the method <code>addCaster()</code>.
+	 *
+	 * @see #addCaster()
+	 * @see alternativa.engine3d.lights.OmniLight#shadow
+	 * @see #farBoundPosition
+	 */
+
+	public class OmniLightShadow extends Shadow {

 		// TODO: calculate bias automaticaly
 		/**
@@ -70,7 +81,7 @@ package alternativa.engine3d.shadows {
 		private var cameras:Vector.<Camera3D> = new Vector.<Camera3D>();

 		private var debugObject:Mesh;
-        private var debugMaterial:ShadowDebugMaterial;
+		private var debugMaterial:ShadowDebugMaterial;

 		private var _casters:Vector.<Object3D> = new Vector.<Object3D>();

@@ -111,26 +122,26 @@ package alternativa.engine3d.shadows {
 			debugMaterial.alpha = 0.3;

 			for (var i:int = 0; i < 6; i++) {
-				var cam:Camera3D = new Camera3D(radius/1000, radius);
+				var cam:Camera3D = new Camera3D(radius / 1000, radius);
 				cam.fov = 1.910633237;
 				cameras[i] = cam;
 			}

 			// Left
-			cameras[1].rotationY = -Math.PI/2;
+			cameras[1].rotationY = -Math.PI / 2;
 			cameras[1].scaleY = -1;
 			cameras[1].composeTransforms();
 			// Right
-			cameras[0].rotationY = Math.PI/2;
+			cameras[0].rotationY = Math.PI / 2;
 			cameras[0].scaleY = -1;
 			cameras[0].composeTransforms();
 			// Back
-			cameras[3].rotationX = -Math.PI/2;
+			cameras[3].rotationX = -Math.PI / 2;
 			cameras[3].rotationZ = Math.PI;
 			cameras[3].scaleX = -1;
 			cameras[3].composeTransforms();
 			// Front
-			cameras[2].rotationX = -Math.PI/2;
+			cameras[2].rotationX = -Math.PI / 2;
 			cameras[2].scaleY = -1;
 			cameras[2].composeTransforms();
 			// Bottom
@@ -143,7 +154,7 @@ package alternativa.engine3d.shadows {
 			cameras[4].composeTransforms();
 		}

-		private function createDebugObject(material:Material, context:Context3D):Mesh{
+		private function createDebugObject(material:Material, context:Context3D):Mesh {
 			var geometry:Geometry;
 			var mesh:Mesh;
 			if (DEBUG_TYPE == "Box") {
@@ -186,7 +197,7 @@ package alternativa.engine3d.shadows {
 					triangles.push(c, b, a);
 				}
 				mesh.geometry.indices = triangles;
-				mesh.getSurface(0).numTriangles = triangles.length/3;
+				mesh.getSurface(0).numTriangles = triangles.length / 3;
 				mesh.setMaterialToAllSurfaces(material);
 			}
 			mesh.geometry.upload(context);
@@ -218,7 +229,7 @@ package alternativa.engine3d.shadows {
 			radius = OmniLight(_light).attenuationEnd;
 			for (i = 0; i < 6; i++) {
 				var cam:Camera3D = cameras[i];
-				cam.nearClipping = radius/1000;
+				cam.nearClipping = radius / 1000;
 				cam.farClipping = radius;
 				cam.calculateProjection(1, 1);
 			}
@@ -242,7 +253,7 @@ package alternativa.engine3d.shadows {
 					caster.localToLightTransform.combine(_light.cameraToLocalTransform, caster.localToCameraTransform);

 					// collect actualCasters for light
-					if (caster.boundBox == null || OmniLight(_light).checkBound(caster)){
+					if (caster.boundBox == null || OmniLight(_light).checkBound(caster)) {
 						actualCasters[actualCastersCount] = caster;
 						actualCastersCount++;

@@ -280,7 +291,7 @@ package alternativa.engine3d.shadows {
 				// Cube side camera
 				var edgeCamera:Camera3D = cameras[i];

-				var edgeBit:int = (1<<i);
+				var edgeBit:int = (1 << i);
 				if (actualCastersCount > 0) {
 					// Настройка параметров рендеринга:
 					renderer.camera = camera;
@@ -306,10 +317,10 @@ package alternativa.engine3d.shadows {
 					renderer.render(context);
 					prevActualCastersMask |= edgeBit;
 				}
-				else{
+				else {
 					// Если относительно одной из камер ничего не менялось, не вызываем отрисовочный вызов

-					if ((prevActualCastersMask & edgeBit)){
+					if ((prevActualCastersMask & edgeBit)) {
 						context.setRenderToTexture(cubeShadowMap, false, 0, i);
 						context.clear(1, 0, 0, 0);

@@ -331,7 +342,7 @@ package alternativa.engine3d.shadows {
 				if (debugObject == null) {
 					debugObject = createDebugObject(debugMaterial, camera.context3D);
 				}
-				debugObject.scaleX = debugObject.scaleY = debugObject.scaleZ = radius*debugRadiusScale;
+				debugObject.scaleX = debugObject.scaleY = debugObject.scaleZ = radius * debugRadiusScale;
 				debugObject.composeTransforms();

 				// Формируем матрицу трансформации для debugObject
@@ -344,15 +355,15 @@ package alternativa.engine3d.shadows {
 			actualCasters.length = 0;
 		}

-		private function collectActualChildren(root:Object3D):void{
+		private function collectActualChildren(root:Object3D):void {
 			for (var child:Object3D = root.childrenList; child != null; child = child.next) {
-				if (child.visible){
+				if (child.visible) {
 					// calculate transform matrices
 					_light.lightToObjectTransform.combine(child.cameraToLocalTransform, _light.localToCameraTransform);
 					child.localToLightTransform.combine(_light.cameraToLocalTransform, child.localToCameraTransform);

 					// collect actualCasters for light
-					if (child.boundBox == null || OmniLight(_light).checkBound(child)){
+					if (child.boundBox == null || OmniLight(_light).checkBound(child)) {
 						actualCasters[actualCastersCount] = child;
 						actualCastersCount++;

@@ -508,46 +519,45 @@ package alternativa.engine3d.shadows {
 				if (plane.x >= 0)
 					if (plane.y >= 0)
 						if (plane.z >= 0) {
-							if (bb.maxX*plane.x + bb.maxY*plane.y + bb.maxZ*plane.z >= plane.offset) result = plane.frontCameras;
-							if (bb.minX*plane.x + bb.minY*plane.y + bb.minZ*plane.z < plane.offset) result |= plane.backCameras;
+							if (bb.maxX * plane.x + bb.maxY * plane.y + bb.maxZ * plane.z >= plane.offset) result = plane.frontCameras;
+							if (bb.minX * plane.x + bb.minY * plane.y + bb.minZ * plane.z < plane.offset) result |= plane.backCameras;
 						} else {
-							if (bb.maxX*plane.x + bb.maxY*plane.y + bb.minZ*plane.z >= plane.offset) result = plane.frontCameras;
-							if (bb.minX*plane.x + bb.minY*plane.y + bb.maxZ*plane.z < plane.offset) result |= plane.backCameras;
-						}
-					else
-						if (plane.z >= 0) {
-							if (bb.maxX*plane.x + bb.minY*plane.y + bb.maxZ*plane.z >= plane.offset) result = plane.frontCameras;
-							if (bb.minX*plane.x + bb.maxY*plane.y + bb.minZ*plane.z < plane.offset) result |= plane.backCameras;
-						} else {
-							if (bb.maxX*plane.x + bb.minY*plane.y + bb.minZ*plane.z >= plane.offset) result = plane.frontCameras;
-							if (bb.minX*plane.x + bb.maxY*plane.y + bb.maxZ*plane.z < plane.offset) result |= plane.backCameras;
+							if (bb.maxX * plane.x + bb.maxY * plane.y + bb.minZ * plane.z >= plane.offset) result = plane.frontCameras;
+							if (bb.minX * plane.x + bb.minY * plane.y + bb.maxZ * plane.z < plane.offset) result |= plane.backCameras;
 						}
+					else if (plane.z >= 0) {
+						if (bb.maxX * plane.x + bb.minY * plane.y + bb.maxZ * plane.z >= plane.offset) result = plane.frontCameras;
+						if (bb.minX * plane.x + bb.maxY * plane.y + bb.minZ * plane.z < plane.offset) result |= plane.backCameras;
+					} else {
+						if (bb.maxX * plane.x + bb.minY * plane.y + bb.minZ * plane.z >= plane.offset) result = plane.frontCameras;
+						if (bb.minX * plane.x + bb.maxY * plane.y + bb.maxZ * plane.z < plane.offset) result |= plane.backCameras;
+					}
 				else if (plane.y >= 0)
 					if (plane.z >= 0) {
-						if (bb.minX*plane.x + bb.maxY*plane.y + bb.maxZ*plane.z >= plane.offset) result = plane.frontCameras;
-						if (bb.maxX*plane.x + bb.minY*plane.y + bb.minZ*plane.z < plane.offset) result |= plane.backCameras;
+						if (bb.minX * plane.x + bb.maxY * plane.y + bb.maxZ * plane.z >= plane.offset) result = plane.frontCameras;
+						if (bb.maxX * plane.x + bb.minY * plane.y + bb.minZ * plane.z < plane.offset) result |= plane.backCameras;
 					} else {
-						if (bb.minX*plane.x + bb.maxY*plane.y + bb.minZ*plane.z >= plane.offset) result = plane.frontCameras;
-						if (bb.maxX*plane.x + bb.minY*plane.y + bb.maxZ*plane.z < plane.offset) result |= plane.backCameras;
+						if (bb.minX * plane.x + bb.maxY * plane.y + bb.minZ * plane.z >= plane.offset) result = plane.frontCameras;
+						if (bb.maxX * plane.x + bb.minY * plane.y + bb.maxZ * plane.z < plane.offset) result |= plane.backCameras;
 					}
 				else if (plane.z >= 0) {
-					if (bb.minX*plane.x + bb.minY*plane.y + bb.maxZ*plane.z >= plane.offset) result = plane.frontCameras;
-					if (bb.maxX*plane.x + bb.maxY*plane.y + bb.minZ*plane.z < plane.offset) result |= plane.backCameras;
+					if (bb.minX * plane.x + bb.minY * plane.y + bb.maxZ * plane.z >= plane.offset) result = plane.frontCameras;
+					if (bb.maxX * plane.x + bb.maxY * plane.y + bb.minZ * plane.z < plane.offset) result |= plane.backCameras;
 				} else {
-					if (bb.minX*plane.x + bb.minY*plane.y + bb.minZ*plane.z >= plane.offset) result = plane.frontCameras;
-					if (bb.maxX*plane.x + bb.maxY*plane.y + bb.maxZ*plane.z < plane.offset) result |= plane.backCameras;
+					if (bb.minX * plane.x + bb.minY * plane.y + bb.minZ * plane.z >= plane.offset) result = plane.frontCameras;
+					if (bb.maxX * plane.x + bb.maxY * plane.y + bb.maxZ * plane.z < plane.offset) result |= plane.backCameras;
 				}
 				culling &= result | plane.unusedBits;
 			}
 			return culling;
 		}

-		private function collectDraws(context:Context3D, caster:Object3D, edgeCamera:Camera3D):void{
+		private function collectDraws(context:Context3D, caster:Object3D, edgeCamera:Camera3D):void {
 			// если объект является мешем, собираем для него дроуколы
 			var mesh:Mesh = caster as Mesh;
 			if (mesh != null && mesh.geometry != null) {
 				var program:ShaderProgram;
-                var programListByTransformProcedure:Vector.<ShaderProgram>;
+				var programListByTransformProcedure:Vector.<ShaderProgram>;
 				var skin:Skin = mesh as Skin;

 				// пробегаемся по сурфейсам
@@ -617,7 +627,7 @@ package alternativa.engine3d.shadows {
 					drawUnit.setProjectionConstants(edgeCamera, program.vertexShader.getVariableIndex("cProjMatrix"), casterToEdgedCameraTransform);
 					drawUnit.setVertexConstantsFromTransform(program.vertexShader.getVariableIndex("cCasterToOmni"), caster.localToLightTransform);

-					drawUnit.setFragmentConstantsFromNumbers(program.fragmentShader.getVariableIndex("cConstants"), 1 / 255, 0, 255/radius, 1);
+					drawUnit.setFragmentConstantsFromNumbers(program.fragmentShader.getVariableIndex("cConstants"), 1 / 255, 0, 255 / radius, 1);

 					renderer.addDrawUnit(drawUnit, Renderer.OPAQUE);
 				}
@@ -654,74 +664,73 @@ package alternativa.engine3d.shadows {


 		private function getProgram(transformProcedure:Procedure, programListByTransformProcedure:Vector.<ShaderProgram>, context:Context3D, alphaTest:Boolean, useDiffuseAlpha:Boolean):ShaderProgram {
-            var key:int = (alphaTest ? (useDiffuseAlpha ? 1 : 2) : 0);
-            var program:ShaderProgram = programListByTransformProcedure[key];
+			var key:int = (alphaTest ? (useDiffuseAlpha ? 1 : 2) : 0);
+			var program:ShaderProgram = programListByTransformProcedure[key];

-            if (program == null) {
+			if (program == null) {
 				var vLinker:Linker = new Linker(Context3DProgramType.VERTEX);
 				var fLinker:Linker = new Linker(Context3DProgramType.FRAGMENT);

-                var positionVar:String = "aPosition";
-                vLinker.declareVariable(positionVar, VariableType.ATTRIBUTE);
+				var positionVar:String = "aPosition";
+				vLinker.declareVariable(positionVar, VariableType.ATTRIBUTE);

-                if (alphaTest) {
-                    vLinker.addProcedure(passUVProcedure);
-                }
+				if (alphaTest) {
+					vLinker.addProcedure(passUVProcedure);
+				}

-                if (transformProcedure != null) {
-                    var newPosVar:String = "tTransformedPosition";
-                    vLinker.declareVariable(newPosVar);
-                    vLinker.addProcedure(transformProcedure, positionVar);
-                    vLinker.setOutputParams(transformProcedure, newPosVar);
-                    positionVar = newPosVar;
-                }
+				if (transformProcedure != null) {
+					var newPosVar:String = "tTransformedPosition";
+					vLinker.declareVariable(newPosVar);
+					vLinker.addProcedure(transformProcedure, positionVar);
+					vLinker.setOutputParams(transformProcedure, newPosVar);
+					positionVar = newPosVar;
+				}

-                var proc:Procedure = Procedure.compileFromArray([
-                    "#v0=vDistance",
+				var proc:Procedure = Procedure.compileFromArray([
+					"#v0=vDistance",

 					"m34 t0.xyz, i0, c2",
-                    "mov v0, t0.xyzx",
+					"mov v0, t0.xyzx",

 					"m44 o0, i0, c0"
-                ]);
-                proc.assignVariableName(VariableType.CONSTANT, 0, "cProjMatrix", 4);
+				]);
+				proc.assignVariableName(VariableType.CONSTANT, 0, "cProjMatrix", 4);
 				proc.assignVariableName(VariableType.CONSTANT, 2, "cCasterToOmni", 3);

-                vLinker.addProcedure(proc, positionVar);
+				vLinker.addProcedure(proc, positionVar);

-                if (alphaTest) {
-                    if (useDiffuseAlpha) {
-                        fLinker.addProcedure(diffuseAlphaTestProcedure);
-                    } else {
-                        fLinker.addProcedure(opacityAlphaTestProcedure);
-                    }
-                }
-                fLinker.addProcedure(Procedure.compileFromArray([
-                    "#v0=vDistance",		// xyz
-                    "#c0=cConstants",		// 1/255, 0, 255/radius, 1
+				if (alphaTest) {
+					if (useDiffuseAlpha) {
+						fLinker.addProcedure(diffuseAlphaTestProcedure);
+					} else {
+						fLinker.addProcedure(opacityAlphaTestProcedure);
+					}
+				}
+				fLinker.addProcedure(Procedure.compileFromArray([
+					"#v0=vDistance", // xyz
+					"#c0=cConstants", // 1/255, 0, 255/radius, 1
 					// calculate distance
 					"dp3 t0.z, v0.xyz, v0.xyz",
-					"sqt t0.z, t0.z",			// x: [0, radius]
-					"mul t0.z, t0.z, c0.z",		// x: [0, 255]
+					"sqt t0.z, t0.z", // x: [0, radius]
+					"mul t0.z, t0.z, c0.z", // x: [0, 255]
 					// codeing
-                    "frc t0.y, t0.z",
-                    "sub t0.x, t0.z, t0.y",
-                    "mul t0.x, t0.x, c0.x",
+					"frc t0.y, t0.z",
+					"sub t0.x, t0.z, t0.y",
+					"mul t0.x, t0.x, c0.x",

 					"mov t0.w, c0.w",
 					"mov o0, t0"
-                ]));
-                program = new ShaderProgram(vLinker, fLinker);
-                fLinker.varyings = vLinker.varyings;
-                programListByTransformProcedure[key] = program;
-                program.upload(context);
+				]));
+				program = new ShaderProgram(vLinker, fLinker);
+				fLinker.varyings = vLinker.varyings;
+				programListByTransformProcedure[key] = program;
+				program.upload(context);

-            }
+			}
 			return program;
 		}


-
 		//------------- ShadowMap Shader in material----------

 		/**
@@ -737,12 +746,12 @@ package alternativa.engine3d.shadows {

 			// Устанавливаем коеффициенты
 			if (_pcfOffset > 0) {
-				var offset:Number = Math.tan(_pcfOffset/180*Math.PI)/3;
-				drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cPCFOffsets"), -3/2, 1/16, 0, 0);
+				var offset:Number = Math.tan(_pcfOffset / 180 * Math.PI) / 3;
+				drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cPCFOffsets"), -3 / 2, 1 / 16, 0, 0);
 				drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -1, 1, 0, offset);
-				drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cDecode"), -DIFFERENCE_MULTIPLIER, -DIFFERENCE_MULTIPLIER/255, biasMultiplier*DIFFERENCE_MULTIPLIER/radius, 10);
+				drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cDecode"), -DIFFERENCE_MULTIPLIER, -DIFFERENCE_MULTIPLIER / 255, biasMultiplier * DIFFERENCE_MULTIPLIER / radius, 10);
 			} else {
-				drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -DIFFERENCE_MULTIPLIER, -DIFFERENCE_MULTIPLIER/255, biasMultiplier*DIFFERENCE_MULTIPLIER/radius, 1.0);
+				drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -DIFFERENCE_MULTIPLIER, -DIFFERENCE_MULTIPLIER / 255, biasMultiplier * DIFFERENCE_MULTIPLIER / radius, 1.0);
 			}
 		}

@@ -834,7 +843,7 @@ package alternativa.engine3d.shadows {
 //			shaderArr[line++] = "mov t3.z, t0.w";

 			shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
-			shaderArr[line++] = "dp3 o0." +componentByIndex[0] + ", t3.xyz, c0.xyz";				// декодируем, вычитаем, умножаем на большое число
+			shaderArr[line++] = "dp3 o0." + componentByIndex[0] + ", t3.xyz, c0.xyz";				// декодируем, вычитаем, умножаем на большое число

 			//-----

@@ -842,7 +851,7 @@ package alternativa.engine3d.shadows {
 				shaderArr[line++] = "add t2.xyz, t2.xyz, t1.xyz";

 				shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
-				shaderArr[line++] = "dp3 o0." +componentByIndex[j] + ", t3.xyz, c0.xyz";			// декодируем, вычитаем, умножаем на большое число
+				shaderArr[line++] = "dp3 o0." + componentByIndex[j] + ", t3.xyz, c0.xyz";			// декодируем, вычитаем, умножаем на большое число
 			}

 			shaderArr[line++] = "sat o0, o0";
@@ -854,13 +863,13 @@ package alternativa.engine3d.shadows {
 				shaderArr[line++] = "add t2.xyz, t2.xyz, t0.xyz";

 				shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
-				shaderArr[line++] = "dp3 o0." +componentByIndex[0] + ", t3.xyz, c0.xyz";			// декодируем, вычитаем, умножаем на большое число
+				shaderArr[line++] = "dp3 o0." + componentByIndex[0] + ", t3.xyz, c0.xyz";			// декодируем, вычитаем, умножаем на большое число

-				for (j = 1; j < 4; j++){
-					shaderArr[line++] = (i%2 == 1)?("add t2.xyz, t2.xyz, t1.xyz"):("sub t2.xyz, t2.xyz, t1.xyz");
+				for (j = 1; j < 4; j++) {
+					shaderArr[line++] = (i % 2 == 1) ? ("add t2.xyz, t2.xyz, t1.xyz") : ("sub t2.xyz, t2.xyz, t1.xyz");

 					shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
-					shaderArr[line++] = "dp3 o0." +componentByIndex[j] + ", t3.xyz, c0.xyz";			// декодируем, вычитаем, умножаем на большое число
+					shaderArr[line++] = "dp3 o0." + componentByIndex[j] + ", t3.xyz, c0.xyz";			// декодируем, вычитаем, умножаем на большое число
 				}
 				shaderArr[line++] = "sat o0, o0";
 				shaderArr[line++] = "dp4 o0.x, o0, c2.y";
@@ -876,8 +885,8 @@ package alternativa.engine3d.shadows {
 		private static const componentByIndex:Array = ["x", "y", "z", "w"];

 		/**
-		 * Добавляет <code>object</code> в список объектов, отбрасывающих тень.
-		 * @param object Добавляемый объект.
+		 * Adds  given object to list of objects, that cast shadow.
+		 * @param object Added object.
 		 */
 		public function addCaster(object:Object3D):void {
 			if (_casters.indexOf(object) < 0) {
@@ -885,6 +894,10 @@ package alternativa.engine3d.shadows {
 			}
 		}

+		/**
+		 * Removes given object from shadow casters list.
+		 * @param object Object which should be removed from shadow casters list.
+		 */
 		public function removeCaster(object:Object3D):void {
 			var index:int = _casters.indexOf(object);
 			if (index < 0) throw new Error("Caster not found");
@@ -892,14 +905,15 @@ package alternativa.engine3d.shadows {
 		}

 		/**
-		 * Очищает список объектов, отбрасывающих тень.
-		 */
+		* Clears the list of objects, that cast shadow.
+		*/
 		public function clearCasters():void {
 			_casters.length = 0;
 		}

 		/**
-		 * Качество тени. Задает разрешение shadowmap. Может принимать значения от <code>2</code> до <code>11</code>.
+		 * Set resolution of shadow map. This property can get value of power of 2 (up to 2048).
+		 * OmniLightShadow uses 6 shadow maps.
 		 */
 		public function get mapSize():int {
 			return _mapSize;
@@ -916,7 +930,7 @@ package alternativa.engine3d.shadows {
 				} else if (value > 1024) {
 					throw new ArgumentError("Map size exceeds maximum value 1024.");
 				}
-				if ((Math.log(value)/Math.LN2 % 1) != 0) {
+				if ((Math.log(value) / Math.LN2 % 1) != 0) {
 					throw new ArgumentError("Map size must be power of two.");
 				}
 				if (cubeShadowMap != null) {
@@ -927,8 +941,7 @@ package alternativa.engine3d.shadows {
 		}

 		/**
-		 * Смещение Percentage Closer Filtering. Этот способ фильтрации используется для смягчения границ тени.
-		 * 1 pcfOffset equivalent 1 degree for all blur
+		 * Offset of Percentage Closer Filtering. This way of filtering is used for mitigation of shadow bounds.
 		 */
 		public function get pcfOffset():Number {
 			return _pcfOffset;
@@ -971,6 +984,7 @@ import flash.utils.Dictionary;
 class ShadowDebugMaterial extends Material {

 	use namespace alternativa3d;
+
 	/**
 	 * Прозрачность.
 	 * Является дополнительным множителем к прозрачности текстуры.
@@ -1015,7 +1029,7 @@ class ShadowDebugMaterial extends Material {
 		drawUnit.setVertexBufferAt(program.vertexShader.getVariableIndex("aPosition"), positionBuffer, geometry._attributesOffsets[VertexAttributes.POSITION], VertexAttributes.FORMATS[VertexAttributes.POSITION]);
 		// Установка констант
 		drawUnit.setProjectionConstants(camera, program.vertexShader.getVariableIndex("cProjMatrix"), object.localToCameraTransform);
-		drawUnit.setFragmentConstantsFromNumbers(program.fragmentShader.getVariableIndex("cDecode"), 1, 1/255, 0, alpha);
+		drawUnit.setFragmentConstantsFromNumbers(program.fragmentShader.getVariableIndex("cDecode"), 1, 1 / 255, 0, alpha);
 		drawUnit.setTextureAt(program.fragmentShader.getVariableIndex("sCubeMap"), cubeMap);

 		// Отправка на отрисовку
--- a/src/alternativa/utils/Utils.as
+++ b/src/alternativa/utils/Utils.as
@@ -42,8 +42,13 @@ package alternativa.utils {
 		}

 		/**
-		 * @private
-		 * Performs calculation of bound box of objects hierarchy branch.
+         * Calculates a BoundBox of hierarchy of objects.
+         *
+         * @param object Container which contains the hierarchy.
+         * @param boundBoxSpace <code>Object3D</code> in coordinates of which the BoundBox will be calculated.
+         * @param result Instance of <code>BoundBox</code> to which calculated properties will be set.
+         *
+         * @return Instance given as <code>result</code> property with properties updated according to calculations. If <code>result</code> property was not set, new instance of <code>BoundBox</code> will be created.
 		 */
 		public static function calculateHierarchyBoundBox(object:Object3D, boundBoxSpace:Object3D = null, result:BoundBox = null):BoundBox {
 			if (result == null) result = new BoundBox();