//--------------------------------------------------------------------------------------
// Rejects any D3D9 devices that aren't acceptable to the app by returning false.
//--------------------------------------------------------------------------------------
bool CALLBACK IsD3D9DeviceAcceptable(D3DCAPS9* pCaps, D3DFORMAT AdapterFormat, D3DFORMAT BackBufferFormat, 
                                     bool bWindowed, void* pUserContext)
{
    // Typically want to skip back buffer formats that don't support alpha blending

IDirect3D9* pD3D = DXUTGetD3D9Object();

/*
    HRESULT CheckDeviceFormat(
      UINT Adapter,
      D3DDEVTYPE DeviceType,
      D3DFORMAT AdapterFormat,
      DWORD Usage,
      D3DRESOURCETYPE RType,
      D3DFORMAT CheckFormat
    );
    /*/

if(FAILED(pD3D->CheckDeviceFormat(pCaps->AdapterOrdinal, pCaps->DeviceType, AdapterFormat, 
            D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, D3DRTYPE_TEXTURE, BackBufferFormat)))
    {
        return false;
    }

return true;
}

//--------------------------------------------------------------------------------------
// Before a device is created, modify the device settings as needed.
//--------------------------------------------------------------------------------------
bool CALLBACK ModifyDeviceSettings(DXUTDeviceSettings* pDeviceSettings, void* pUserContext)
{
    return true;
}

//--------------------------------------------------------------------------------------
// Create any D3D9 resources that will live through a device reset (D3DPOOL_MANAGED)
// and aren't tied to the back buffer size.
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnD3D9CreateDevice(IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc, 
                                    void* pUserContext)
{
    return S_OK;
}

//--------------------------------------------------------------------------------------
// Create any D3D9 resources that won't live through a device reset (D3DPOOL_DEFAULT) 
// or that are tied to the back buffer size.
//--------------------------------------------------------------------------------------
HRESULT CALLBACK OnD3D9ResetDevice(IDirect3DDevice9* pd3dDevice, const D3DSURFACE_DESC* pBackBufferSurfaceDesc, 
                                   void* pUserContext)
{
    return S_OK;
}

//--------------------------------------------------------------------------------------
// Handle updates to the scene.  This is called regardless of which D3D API is used.
//--------------------------------------------------------------------------------------
void CALLBACK OnFrameMove(double fTime, float fElapsedTime, void* pUserContext)
{
}

//--------------------------------------------------------------------------------------
// Render the scene using the D3D9 device
//--------------------------------------------------------------------------------------
void CALLBACK OnD3D9FrameRender( IDirect3DDevice9* pd3dDevice, double fTime, float fElapsedTime, void* pUserContext )
{
    HRESULT hr;

// Clear the render target and the zbuffer 
    V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(0, 5, 5, 5), 1.0f, 0) );

// Render the scene
    if( SUCCEEDED( pd3dDevice->BeginScene() ) )
    {
        V( pd3dDevice->EndScene() );
    }
}

//--------------------------------------------------------------------------------------
// Handle messages to the application 
//--------------------------------------------------------------------------------------
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, 
                          bool* pbNoFurtherProcessing, void* pUserContext )
{
    return 0;
}

//--------------------------------------------------------------------------------------
// Release D3D9 resources created in the OnD3D9ResetDevice callback 
//--------------------------------------------------------------------------------------
void CALLBACK OnD3D9LostDevice( void* pUserContext )
{
}

//--------------------------------------------------------------------------------------
// Release D3D9 resources created in the OnD3D9CreateDevice callback 
//--------------------------------------------------------------------------------------
void CALLBACK OnD3D9DestroyDevice( void* pUserContext )
{
}

//--------------------------------------------------------------------------------------
// Initialize everything and go into a render loop
//--------------------------------------------------------------------------------------
INT WINAPI wWinMain( HINSTANCE, HINSTANCE, LPWSTR, int )
{
    // Enable run-time memory check for debug builds.
#if defined(DEBUG) | defined(_DEBUG)
    _CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif

// Set the callback functions
    DXUTSetCallbackD3D9DeviceAcceptable(IsD3D9DeviceAcceptable);
    DXUTSetCallbackD3D9DeviceCreated(OnD3D9CreateDevice);
    DXUTSetCallbackD3D9DeviceReset(OnD3D9ResetDevice);
    DXUTSetCallbackD3D9FrameRender(OnD3D9FrameRender);
    DXUTSetCallbackD3D9DeviceLost(OnD3D9LostDevice);
    DXUTSetCallbackD3D9DeviceDestroyed(OnD3D9DestroyDevice);
    DXUTSetCallbackDeviceChanging(ModifyDeviceSettings);
    DXUTSetCallbackMsgProc(MsgProc);
    DXUTSetCallbackFrameMove(OnFrameMove);

// TODO: Perform any application-level initialization here

// Initialize DXUT and create the desired Win32 window and Direct3D device for the application

DXUTInit( true, true ); // Parse the command line and show msgboxes
    DXUTSetHotkeyHandling( true, true, true );  // handle the default hotkeys
    DXUTSetCursorSettings( true, true ); // Show the cursor and clip it when in full screen
    DXUTCreateWindow( L"AppFrame Sample" );
    DXUTCreateDevice( true, 640, 480 );

// Start the render loop
    DXUTMainLoop();

// TODO: Perform any application-level cleanup here

return DXUTGetExitCode();
}