Graphics Engine Process

The general process of a graphics engine follows:

• Initialize
  • Create a Graphic Window
  • Create a Graphic Renderer
• Run Loop
  • Process Input
    • Save state for current inputs
  • Update Game State
    • Calculate Delta Time
    • Limit Updating Frequency to 16ms, which yields 60 Frames Per Second.
      • If Delta Time is less than 16ms, wait for a while.
    • If Delta Time is bigger than Max Delta Time, usually twice the Delta Time, cap the Delta Time to Max Delta Time
    • Game logic goes here.
  • Generate Output
    • Back Buffer is filled in Update Game State.
    • Clear the Back Buffer
    • Present the Back Buffer
• Shutdown
  • Destroy the renderer
  • Destroy the window
  • End Game