//in init
    glGenVertexArraysOES(1, &cubeVertexArray);
    glBindVertexArrayOES(cubeVertexArray);
    
    glGenBuffers(1, &cubeIndexBuffer);
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cubeIndexBuffer);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, NUM_IMAGE_OBJECT_INDEX*sizeof(GLushort), cubeIndices, GL_STATIC_DRAW);
    
    glGenBuffers(1, &cubeVertexBuffer);
    glBindBuffer(GL_ARRAY_BUFFER, cubeVertexBuffer);
    glBufferData(GL_ARRAY_BUFFER, NUM_IMAGE_OBJECT_VERTEX * 3 * 6 *sizeof(GLfloat), cubeVertices, GL_STATIC_DRAW);
    
    glGenBuffers(1, &cubeNormalBuffer);
    glBindBuffer(GL_ARRAY_BUFFER, cubeNormalBuffer);
    glBufferData(GL_ARRAY_BUFFER, NUM_IMAGE_OBJECT_VERTEX * 3 * 6 *sizeof(GLfloat), cubeNormals, GL_STATIC_DRAW);
    
    glGenBuffers(1, &cubeTextureBuffer);
    glBindBuffer(GL_ARRAY_BUFFER, cubeTextureBuffer);
    glBufferData(GL_ARRAY_BUFFER, NUM_IMAGE_OBJECT_VERTEX * 2 * 6 *sizeof(GLfloat), cubeTexCoords, GL_STATIC_DRAW);
    
    glBindVertexArrayOES(0);

//in render loop
	    glBindBuffer(GL_ARRAY_BUFFER, cubeVertexBuffer);
            glVertexAttribPointer(vertexHandle, 3, GL_FLOAT, GL_FALSE, 0, 0);
            glEnableVertexAttribArray(vertexHandle);
            
            glBindBuffer(GL_ARRAY_BUFFER, cubeNormalBuffer);
            glVertexAttribPointer(normalHandle, 3, GL_FLOAT, GL_FALSE, 0, 0);
            glEnableVertexAttribArray(normalHandle);
            
            glBindBuffer(GL_ARRAY_BUFFER, cubeTextureBuffer);
            glVertexAttribPointer(textureCoordHandle, 2, GL_FLOAT, GL_FALSE, 0, 0);
            glEnableVertexAttribArray(textureCoordHandle);