From 6c828bbe4f5aaabc0e272c4943ddbad74f7c8e01 Mon Sep 17 00:00:00 2001
From: James Gregory <james@james.id.au>
Date: Mon, 8 Apr 2013 22:08:44 -0700
Subject: [PATCH] Switch to using GL_DYNAMIC_DRAW.

---
 cocos2dx/cocoa/CCObject.cpp | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/cocos2dx/cocoa/CCObject.cpp b/cocos2dx/cocoa/CCObject.cpp
index c9022d3503..0799a02547 100644
--- a/cocos2dx/cocoa/CCObject.cpp
+++ b/cocos2dx/cocoa/CCObject.cpp
@@ -93,9 +93,15 @@ void CCObject::setGLBufferData(void *buf, GLuint bufSize, int slot)
         }
         glGenBuffers(1, &(m_bufferObject[slot]));
         m_bufferSize[slot] = bufSize;
+
+        glBindBuffer(GL_ARRAY_BUFFER, m_bufferObject[slot]);
+        glBufferData(GL_ARRAY_BUFFER, bufSize, buf, GL_DYNAMIC_DRAW);
+    }
+    else
+    {
+        glBindBuffer(GL_ARRAY_BUFFER, m_bufferObject[slot]);
+        glBufferSubData(GL_ARRAY_BUFFER, 0, bufSize, buf);
     }
-    glBindBuffer(GL_ARRAY_BUFFER, m_bufferObject[slot]);
-    glBufferData(GL_ARRAY_BUFFER, bufSize, buf, GL_STATIC_DRAW);
 }
 void CCObject::setGLIndexData(void *buf, GLuint bufSize, int slot)
 {
@@ -108,9 +114,15 @@ void CCObject::setGLIndexData(void *buf, GLuint bufSize, int slot)
         }
         glGenBuffers(1, &(m_indexBufferObject[slot]));
         m_indexBufferSize[slot] = bufSize;
+
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_indexBufferObject[slot]);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, bufSize, buf, GL_DYNAMIC_DRAW);
+    }
+    else
+    {
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_indexBufferObject[slot]);
+        glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, bufSize, buf);
     }
-    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_indexBufferObject[slot]);
-    glBufferData(GL_ELEMENT_ARRAY_BUFFER, bufSize, buf, GL_STATIC_DRAW);
 }
 #endif // EMSCRIPTEN
 CCObject* CCObject::copy()