1.修正gles版本过低时会崩溃的问题

2.修正unscheduleAllSelectors（）中遍历哈希表导致崩溃的问题

cocos2dx/CCScheduler.cpp

@@ -436,11 +436,15 @@ void CCScheduler::unscheduleUpdateForTarget(const SelectorProtocol *pTarget)
 void CCScheduler::unscheduleAllSelectors(void)
 {
 	// Custom Selectors
-    tHashSelectorEntry *pElement;
+    tHashSelectorEntry *pElement = NULL;
+	tHashSelectorEntry *pNextElement = NULL;
 	for (pElement = m_pHashForSelectors; pElement != NULL;)
 	{
+		// pElement may be removed in unscheduleAllSelectorsForTarget
+		pNextElement = (tHashSelectorEntry *)pElement->hh.next;
 		unscheduleAllSelectorsForTarget(pElement->target);
-        pElement = (tHashSelectorEntry *)pElement->hh.next;
+
+        pElement = pNextElement;
 	}
 
 	// Updates selectors

cocos2dx/cocos2d.cpp

@@ -30,4 +30,26 @@ const char* cocos2dVersion()
 {
 	return "cocos2d v0.99.5";
 }
+
+eGLESVersion getGlesVersion()
+{
+	std::string strVersion((char *)glGetString(GL_VERSION));
+
+	if (strVersion.find("1.0") != -1)
+	{
+		return GLES_VER_1_0;
+	}
+	else if (strVersion.find("1.1") != -1)
+	{
+		return GLES_VER_1_1;
+	}
+	else if (strVersion.find("2.0") != -1)
+	{
+		return GLES_VER_2_0;
+	}
+
+	return GLES_VER_INVALID;
+}
+
+
 }//namespace   cocos2d 

cocos2dx/effects/CCGrabber.cpp

@@ -33,12 +33,28 @@ namespace cocos2d
 		: m_fbo(0)
 		, m_oldFBO(0)
 	{
+		m_eGlesVersion = getGlesVersion();
+
+		// If the gles version is lower than GLES_VER_1_0, 
+		// all the functions in CCGrabber return directly.
+		if (m_eGlesVersion <= GLES_VER_1_0)
+		{
+			return ;
+		}
+
 		// generate FBO
 		ccglGenFramebuffers(1, &m_fbo);
 	}
 
 	void CCGrabber::grab(cocos2d::CCTexture2D *pTexture)
 	{
+		// If the gles version is lower than GLES_VER_1_0, 
+		// all the functions in CCGrabber return directly.
+		if (m_eGlesVersion <= GLES_VER_1_0)
+		{
+			return ;
+		}
+
 		glGetIntegerv(CC_GL_FRAMEBUFFER_BINDING, &m_oldFBO);
 
 		// bind
@@ -60,6 +76,13 @@ namespace cocos2d
 	
 	void CCGrabber::beforeRender(cocos2d::CCTexture2D *pTexture)
 	{
+		// If the gles version is lower than GLES_VER_1_0, 
+		// all the functions in CCGrabber return directly.
+		if (m_eGlesVersion <= GLES_VER_1_0)
+		{
+			return ;
+		}
+
 		glGetIntegerv(CC_GL_FRAMEBUFFER_BINDING, &m_oldFBO);
 		ccglBindFramebuffer(CC_GL_FRAMEBUFFER, m_fbo);
 
@@ -78,12 +101,26 @@ namespace cocos2d
 
 	void CCGrabber::afterRender(cocos2d::CCTexture2D *pTexture)
 	{
+		// If the gles version is lower than GLES_VER_1_0, 
+		// all the functions in CCGrabber return directly.
+		if (m_eGlesVersion <= GLES_VER_1_0)
+		{
+			return ;
+		}
+
 		ccglBindFramebuffer(CC_GL_FRAMEBUFFER, m_oldFBO);
 		glColorMask(true, true, true, true);	// #631
 	}
 
 	CCGrabber::~CCGrabber()
 	{
+		// If the gles version is lower than GLES_VER_1_0, 
+		// all the functions in CCGrabber return directly.
+		if (m_eGlesVersion <= GLES_VER_1_0)
+		{
+			return ;
+		}
+
 		CCLOGINFO("cocos2d: deallocing %p", this);
 		ccglDeleteFramebuffers(1, &m_fbo);
 	}

cocos2dx/effects/CCGrabber.h

@@ -25,6 +25,7 @@ THE SOFTWARE.
 #ifndef __EFFECTS_CCGRABBER_H__
 #define __EFFECTS_CCGRABBER_H__
 
+#include "cocos2d.h"
 #include "CCObject.h"
 #include "CCGL.h"
 
@@ -46,6 +47,8 @@ namespace cocos2d
 	protected:
 		GLuint m_fbo;
 		GLint m_oldFBO;
+		eGLESVersion m_eGlesVersion;
+
 	};
 
 } // end of namespace cocos2d

cocos2dx/include/cocos2d.h

@@ -120,6 +120,17 @@ THE SOFTWARE.
 namespace   cocos2d {
 
 const char* cocos2dVersion();
+
+enum eGLESVersion
+{
+	GLES_VER_INVALID,
+	GLES_VER_1_0,
+	GLES_VER_1_1,
+	GLES_VER_2_0
+};
+
+eGLESVersion CC_DLL getGlesVersion();
+
 }//namespace   cocos2d 
 
 #endif // __COCOS2D_H__

cocos2dx/layers_scenes_transitions_nodes/CCTransition.cpp

@@ -1114,6 +1114,12 @@ void CCTransitionCrossFade::onEnter()
 
 	// create the first render texture for inScene
 	CCRenderTexture* inTexture = CCRenderTexture::renderTextureWithWidthAndHeight((int)size.width, (int)size.height);
+
+	if (NULL == inTexture)
+	{
+		return;
+	}
+
 	inTexture->getSprite()->setAnchorPoint( ccp(0.5f,0.5f) );
 	inTexture->setPosition( ccp(size.width/2, size.height/2) );
 	inTexture->setAnchorPoint( ccp(0.5f,0.5f) );

cocos2dx/layers_scenes_transitions_nodes/CCTransitionRadial.cpp

@@ -62,6 +62,12 @@ void CCTransitionRadialCCW::onEnter()
 
 	// create the second render texture for outScene
 	CCRenderTexture *outTexture = CCRenderTexture::renderTextureWithWidthAndHeight((int)size.width, (int)size.height);
+
+	if (NULL == outTexture)
+	{
+		return;
+	}
+	
 	outTexture->getSprite()->setAnchorPoint(ccp(0.5f,0.5f));
 	outTexture->setPosition(ccp(size.width/2, size.height/2));
 	outTexture->setAnchorPoint(ccp(0.5f,0.5f));

cocos2dx/misc_nodes/CCRenderTexture.cpp

@@ -23,6 +23,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ****************************************************************************/
 
+#include "cocos2d.h"
 #include "CCRenderTexture.h"
 #include "CCDirector.h"
 #include "platform/platform.h"
@@ -84,8 +85,16 @@ CCRenderTexture * CCRenderTexture::renderTextureWithWidthAndHeight(int w, int h)
 	CC_SAFE_DELETE(pRet)
 	return NULL;
 }
+
 bool CCRenderTexture::initWithWidthAndHeight(int w, int h, CCTexture2DPixelFormat eFormat)
 {
+	// If the gles version is lower than GLES_VER_1_0, 
+	// some extended gles functions can't be implemented, so return false directly.
+	if (getGlesVersion() <= GLES_VER_1_0)
+	{
+		return false;
+	}
+
     bool bRet = false;
     do 
     {

tests/tests/RenderTextureTest/RenderTextureTest.cpp

@@ -1,3 +1,4 @@
+#include "cocos2d.h"
 #include "RenderTextureTest.h"
 
 static int sceneIdx = -1; 
@@ -115,11 +116,24 @@ std::string RenderTextureTestDemo::subtitle()
 }
 
 RenderTextureTest::RenderTextureTest()
+: m_brush(NULL)
 {
+	if (cocos2d::getGlesVersion() <= GLES_VER_1_0)
+	{
+		CCMessageBox("The Opengl ES version is lower than 1.1, and the test may not run correctly.", "Cocos2d-x Hint");
+		return;
+	}
+
     CCSize s = CCDirector::sharedDirector()->getWinSize();
 
     // create a render texture, this is what we're going to draw into
     m_target = CCRenderTexture::renderTextureWithWidthAndHeight(s.width, s.height);
+
+	if (NULL == m_target)
+	{
+		return;
+	}
+	
     m_target->setPosition(ccp(s.width/2, s.height/2));
 
     // note that the render texture is a cocosnode, and contains a sprite of it's texture for convience,
@@ -138,7 +152,11 @@ RenderTextureTest::RenderTextureTest()
 
 RenderTextureTest::~RenderTextureTest()
 {
-    m_brush->release();
+	if (NULL != m_brush)
+	{
+		m_brush->release();
+		m_brush = NULL;
+	}
 }
 
 void RenderTextureTest::ccTouchesMoved(CCSet* touches, CCEvent* event)
@@ -203,6 +221,11 @@ RenderTextureIssue937::RenderTextureIssue937()
     /* A2 & B2 setup */
     CCRenderTexture *rend = CCRenderTexture::renderTextureWithWidthAndHeight(32, 64);
 
+	if (NULL == rend)
+	{
+		return;
+	}
+
     // It's possible to modify the RenderTexture blending function by
     //		[[rend sprite] setBlendFunc:(ccBlendFunc) {GL_ONE, GL_ONE_MINUS_SRC_ALPHA}];
 

tests/tests/TransitionsTest/TransitionsTest.cpp

@@ -212,10 +212,39 @@ CCTransitionScene* createTransition(int nIndex, ccTime t, CCScene* s)
     case 22: return CCTransitionSlideInR::transitionWithDuration(t, s);
     case 23: return CCTransitionSlideInT::transitionWithDuration(t, s);
     case 24: return CCTransitionSlideInB::transitionWithDuration(t, s);
+    case 25: 
+		{
+			if (getGlesVersion() <= GLES_VER_1_0)
+			{
+				CCMessageBox("The Opengl ES version is lower than 1.1, and TransitionCrossFade may not run correctly, it is ignored.", "Cocos2d-x Hint");
+				return NULL;
+			}
 			
-    case 25: return CCTransitionCrossFade::transitionWithDuration(t,s);
-    case 26: return CCTransitionRadialCCW::transitionWithDuration(t,s);
-    case 27: return CCTransitionRadialCW::transitionWithDuration(t,s);
+			return CCTransitionCrossFade::transitionWithDuration(t,s);
+		}
+		break;
+    case 26: 
+		{
+			if (getGlesVersion() <= GLES_VER_1_0)
+			{
+				CCMessageBox("The Opengl ES version is lower than 1.1, and TransitionRadialCCW may not run correctly, it is ignored.", "Cocos2d-x Hint");
+				return NULL;
+			}
+
+			return CCTransitionRadialCCW::transitionWithDuration(t,s);
+		}
+		break;
+    case 27: 
+		{
+			if (getGlesVersion() <= GLES_VER_1_0)
+			{
+				CCMessageBox("The Opengl ES version is lower than 1.1, and TransitionRadialCW may not run correctly, it is ignored.", "Cocos2d-x Hint");
+				return NULL;
+			}
+
+			return CCTransitionRadialCW::transitionWithDuration(t,s);
+		}
+		break;
     case 28: return PageTransitionForward::transitionWithDuration(t, s);
     case 29: return PageTransitionBackward::transitionWithDuration(t, s);
     case 30: return CCTransitionFadeTR::transitionWithDuration(t, s);