diff --git a/cocos2dx/effects/CCGrid.cpp b/cocos2dx/effects/CCGrid.cpp
index 07f124cc97..3628f958a7 100644
--- a/cocos2dx/effects/CCGrid.cpp
+++ b/cocos2dx/effects/CCGrid.cpp
@@ -210,8 +210,10 @@ namespace cocos2d
 		CCSize winSize = CCDirector::sharedDirector()->getWinSizeInPixels();
 
 		glLoadIdentity();
-// 		glViewport((GLsizei)0, (GLsizei)0, (GLsizei)winSize.width, (GLsizei)winSize.height);
-        CCDirector::sharedDirector()->getOpenGLView()->setViewPortInPoints(0, 0, winSize.width, winSize.height);
+
+        // set view port for user FBO, fixed bug #543 #544
+ 		glViewport((GLsizei)0, (GLsizei)0, (GLsizei)winSize.width, (GLsizei)winSize.height);
+//        CCDirector::sharedDirector()->getOpenGLView()->setViewPortInPoints(0, 0, winSize.width, winSize.height);
 		glMatrixMode(GL_PROJECTION);
 		glLoadIdentity();
 		ccglOrtho(0, winSize.width, 0, winSize.height, -1024, 1024);
@@ -223,8 +225,9 @@ namespace cocos2d
 	{
 		CCSize	winSize = CCDirector::sharedDirector()->getDisplaySizeInPixels();
 
-// 		glViewport(0, 0, (GLsizei)winSize.width, (GLsizei)winSize.height);
-        CCDirector::sharedDirector()->getOpenGLView()->setViewPortInPoints(0, 0, winSize.width, winSize.height);
+        // set view port for user FBO, fixed bug #543 #544
+ 		glViewport(0, 0, (GLsizei)winSize.width, (GLsizei)winSize.height);
+//        CCDirector::sharedDirector()->getOpenGLView()->setViewPortInPoints(0, 0, winSize.width, winSize.height);
 		glMatrixMode(GL_PROJECTION);
 		glLoadIdentity();
 		gluPerspective(60, (GLfloat)winSize.width/winSize.height, 0.5f, 1500.0f);
@@ -264,6 +267,8 @@ namespace cocos2d
 
 		glBindTexture(GL_TEXTURE_2D, m_pTexture->getName());
 
+        // restore projection for default FBO .fixed bug #543 #544
+        CCDirector::sharedDirector()->setProjection(CCDirector::sharedDirector()->getProjection());
 		blit();
 	}