remove kmGLFreeAll call

cocos/2d/CCDirector.cpp

@@ -434,11 +434,31 @@ void Director::initMatrixStack()
     kmMat4 identity;
     kmMat4Identity(&identity);
     
+    while (!_modelViewMatrixStack.empty())
+    {
+        _modelViewMatrixStack.pop();
+    }
+    
+    while (!_projectionMatrixStack.empty())
+    {
+        _projectionMatrixStack.pop();
+    }
+    
+    while (!_textureMatrixStack.empty())
+    {
+        _textureMatrixStack.pop();
+    }
+    
     _modelViewMatrixStack.push(identity);
     _projectionMatrixStack.push(identity);
     _textureMatrixStack.push(identity);
 }
 
+void Director::resetMatrixStack()
+{
+    initMatrixStack();
+}
+
 void Director::popMatrix(MATRIX_STACK_TYPE type)
 {
     if(MATRIX_STACK_TYPE::MATRIX_STACK_MODELVIEW == type)

cocos/2d/CCDirector.h

@@ -106,6 +106,7 @@ public:
     void loadMatrix(MATRIX_STACK_TYPE type, const kmMat4& mat);
     void multiplyMatrix(MATRIX_STACK_TYPE type, const kmMat4& mat);
     kmMat4 getMatrix(MATRIX_STACK_TYPE type);
+    void resetMatrixStack();
 public:
     static const char *EVENT_PROJECTION_CHANGED;
     static const char* EVENT_AFTER_UPDATE;

cocos/2d/ccGLStateCache.cpp

@@ -65,8 +65,7 @@ namespace GL {
 
 void invalidateStateCache( void )
 {
-    kmGLFreeAll();
-    
+    Director::getInstance()->resetMatrixStack();
     s_currentProjectionMatrix = -1;
     s_vertexAttribPosition = false;
     s_vertexAttribColor = false;