config wp8 and add comment

cocos/2d/libcocos2d_wp8.vcxproj

@@ -386,8 +386,10 @@
     <ClInclude Include="..\3d\CCPlane.h" />
     <ClInclude Include="..\3d\CCRay.h" />
     <ClInclude Include="..\3d\CCSkeleton3D.h" />
+    <ClInclude Include="..\3d\CCSkybox.h" />
     <ClInclude Include="..\3d\CCSprite3D.h" />
     <ClInclude Include="..\3d\CCSprite3DMaterial.h" />
+    <ClInclude Include="..\3d\CCTextureCube.h" />
     <ClInclude Include="..\3d\cocos3d.h" />
     <ClInclude Include="..\audio\include\Export.h" />
     <ClInclude Include="..\audio\include\SimpleAudioEngine.h" />
@@ -990,8 +992,10 @@
     <ClCompile Include="..\3d\CCPlane.cpp" />
     <ClCompile Include="..\3d\CCRay.cpp" />
     <ClCompile Include="..\3d\CCSkeleton3D.cpp" />
+    <ClCompile Include="..\3d\CCSkybox.cpp" />
     <ClCompile Include="..\3d\CCSprite3D.cpp" />
     <ClCompile Include="..\3d\CCSprite3DMaterial.cpp" />
+    <ClCompile Include="..\3d\CCTextureCube.cpp" />
     <ClCompile Include="..\audio\wp8\Audio.cpp">
       <ForcedIncludeFiles Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
       </ForcedIncludeFiles>

cocos/2d/libcocos2d_wp8.vcxproj.filters

@@ -1809,6 +1809,12 @@
     <ClCompile Include="..\editor-support\cocostudio\CCObjectExtensionData.cpp">
       <Filter>cocostudio\json</Filter>
     </ClCompile>
+    <ClCompile Include="..\3d\CCSkybox.cpp">
+      <Filter>3d</Filter>
+    </ClCompile>
+    <ClCompile Include="..\3d\CCTextureCube.cpp">
+      <Filter>3d</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="CCAction.h">
@@ -3516,6 +3522,12 @@
     <ClInclude Include="..\editor-support\cocostudio\CCObjectExtensionData.h">
       <Filter>cocostudio\json</Filter>
     </ClInclude>
+    <ClInclude Include="..\3d\CCSkybox.h">
+      <Filter>3d</Filter>
+    </ClInclude>
+    <ClInclude Include="..\3d\CCTextureCube.h">
+      <Filter>3d</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\math\Mat4.inl">

cocos/3d/CCSkybox.h

@@ -31,29 +31,48 @@ NS_CC_BEGIN
 
 class TextureCube;
 
+/**
+* Sky box technology usually used to simulate infinity sky, mountains and other phenomena.
+*/
 class CC_DLL Skybox : public Node
 {
 public:
     CREATE_FUNC(Skybox);
 
+    /**texture getter and setter*/
     void setTexture(TextureCube*);
 
-    void onDraw(const Mat4& transform, uint32_t flags);
-
-    // Overrides
+    /** draw Skybox object */
     virtual void draw(Renderer* renderer, const Mat4& transform, uint32_t flags) override;
 
+    /** reload sky box after GLESContext reconstructed.*/
     void reload();
 
 CC_CONSTRUCTOR_ACCESS:
+    /**
+    * Constructor.
+    */
     Skybox();
+
+    /**
+    * Destructor.
+    */
     virtual ~Skybox();
+
+    /**
+    * init Skybox.
+    */
     virtual bool init();
 
 protected:
 
+    /**
+    * init internal buffers for Skybox.
+    */
     void initBuffers();
 
+    void onDraw(const Mat4& transform, uint32_t flags);
+
     GLuint      _vao;
     GLuint      _vertexBuffer;
     GLuint      _indexBuffer;

cocos/3d/CCTextureCube.h

@@ -1,4 +1,4 @@
-/****************************************************************************
+/****************************************************************************
  Copyright (c) 2015 Chukong Technologies Inc.
  
  http://www.cocos2d-x.org
@@ -34,28 +34,41 @@
 NS_CC_BEGIN
 
 /**
-    texture cube map.
-    It wraps the cocos2d::Texture2D
+ TextureCube is a collection of six separate square textures that are put 
+ onto the faces of an imaginary cube.
 */
 class CC_DLL TextureCube: public Texture2D
 {
 public:
-    /**
-        create cube texture from 6 textures.
-
-        @param path The image resource path.
-        @create cube texture from 6 textures.
+    /** create cube texture from 6 textures.
+       @param positive_x texture for the right side of the texture cube face.
+       @param negative_x texture for the up side of the texture cube face.
+       @param positive_y texture for the top side of the texture cube face
+       @param negative_y texture for the bottom side of the texture cube face
+       @param positive_z texture for the forward side of the texture cube face.
+       @param negative_z texture for the rear side of the texture cube face.
+       @return  A new texture cube inited with given parameters.
     */
     static TextureCube* create(const std::string& positive_x, const std::string& negative_x,
                                const std::string& positive_y, const std::string& negative_y,
                                const std::string& positive_z, const std::string& negative_z);
 
+    /** Sets the min filter, mag filter, wrap s and wrap t texture parameters.
+    If the texture size is NPOT (non power of 2), then in can only use GL_CLAMP_TO_EDGE in GL_TEXTURE_WRAP_{S,T}.
+    */
     void setTexParameters(const TexParams&);
 
+    /** reload texture cube after GLESContext reconstructed.*/
     bool reloadTexture();
 CC_CONSTRUCTOR_ACCESS:
+    /**
+    * Constructor.
+    */
     TextureCube();
-    TextureCube(const TextureCube&);
+
+    /**
+    * Destructor.
+    */
     virtual ~TextureCube();
 protected: