#define MAX_NUM_HID_ELEMENTS 2048
struct HIDElement {
    long type;
    long page;
    long usage;
    long min;
    long max;
};
struct HIDElements {
    uint32_t       numElements;   
    uint32_t       keys[MAX_NUM_HID_ELEMENTS];
    HIDElement     elements[MAX_NUM_HID_ELEMENTS]; 
};

void HIDElementAdd(HIDElements * elements, uint32_t key, HIDElement e)
{
    Assert(elements->numElements < MAX_NUM_HID_ELEMENTS);
    uint32_t index = elements->numElements;
    elements->elements[index] = e;
    elements->keys[index] = key;
    elements->numElements++;

}
HIDElement* HIDElementGet(HIDElements * elements, uint32_t key)
{
    uint32_t numElements = elements->numElements;
    for(int i=0;i<numElements;i++){
        if(key == elements->keys[i]) {
            return &elements->elements[i]; 
        }
    }
    return 0;
}

HIDElements                 g_hidElements;

#define MAX_HID_BUTTONS 32
// View
@interface HandmadeView : NSOpenGLView {
@public
    CVDisplayLinkRef            _displayLink;
    real64                      _machTimebaseConversionFactor;
    //HIDElements                 _hidElements; <- fails horribly!! ??!?!

    game_sound_output_buffer    _soundBuffer;
    game_offscreen_buffer       _renderBuffer;
    game_memory                 _gameMemory;

    // input from callback
    int                         _hidX;
    int                         _hidY;
    uint8                       _hidButtons[MAX_HID_BUTTONS];


    GLuint _vao; 
    GLuint _vbo;
    GLuint _tex;
    GLuint _program;
    BOOL                        _setupComplete;
    
}