BOOL SetVertexFog(BOOL Enabled, short Mode, DWORD Color, float Density, BOOL UseRange)
{
  // Check to see if Device Error
  if(m_pD3DDevice == NULL)
    return FALSE;

  float Start = 0.5f, End = 0.8f;   // Linear fog distances
        
  // Enable the Blending of Fog
  if(Enabled == TRUE)
	  m_pD3DDevice->SetRenderState(D3DRS_FOGENABLE, TRUE);

  // Set the Color of the Fog
  m_pD3DDevice->SetRenderState(D3DRS_FOGCOLOR, Color);

  // Set Linear fog mode with start and end variables
  if(Mode == D3DFOG_LINEAR) {
	  m_pD3DDevice->SetRenderState(D3DRS_FOGVERTEXMODE, Mode);
	  m_pD3DDevice->SetRenderState(D3DRS_FOGSTART, *(DWORD *)(&Start));
	  m_pD3DDevice->SetRenderState(D3DRS_FOGEND, *(DWORD *)(&End));
  }
  // Set Exponetial fog mode with density variable
  if(Mode == D3DFOG_EXP) {
	  m_pD3DDevice->SetRenderState(D3DRS_FOGVERTEXMODE, Mode);
	  m_pD3DDevice->SetRenderState(D3DRS_FOGDENSITY, *(DWORD *)(&Density));
  }
  // Check if to use range fog or not
  if(UseRange)
	  m_pD3DDevice->SetRenderState(D3DRS_RANGEFOGENABLE, TRUE);

  return TRUE;
}