internal void Run(int cycleCount)
{
var completedCycles = 0;
while (completedCycles++ < cycleCount)
{
_gameBoy.AdvanceMachineCycle(Input.JoypadState.None);
}
}
public void Emulation_in_release_mode_must_be_at_least_twice_as_fast_as_real_gameboy()
{
#if DEBUG
var expectedPerformance = 100.0;
#else
var expectedPerformance = 50.0;
#endif
var gameBoy = new GameBoy("PerformanceTests/Roms/cpu_instrs_looped.gb");
Stopwatch stopWatch = new Stopwatch();
if (!Stopwatch.IsHighResolution)
{
Assert.Fail("No high res timer available in system!");
}
stopWatch.Start();
var multiplier = 10000;
var cycle = 0;
var cycles = 17556 * multiplier;
while (cycle++ < cycles)
{
gameBoy.AdvanceMachineCycle(JoypadState.None);
}
stopWatch.Stop();
var actualPerformance = 100 * stopWatch.ElapsedMilliseconds / (16.74 * multiplier);
Console.WriteLine($"Performance: {actualPerformance}%");
if (actualPerformance < expectedPerformance)
{
Assert.Pass($"RunTime: {actualPerformance}%");
}
else
{
Assert.Fail($"RunTime: {actualPerformance}% is worse than expected runtime: {expectedPerformance}%");
}
}
protected override void OnUpdateFrame(FrameEventArgs e)
{
var timespan = _stopwatch.Elapsed;
if (timespan.TotalMilliseconds >= (16 + _stopwatchOvershoot) || _fastForward == true)
{
_stopwatchOvershoot = 16 - timespan.TotalMilliseconds;
if (_stopwatchOvershoot > 0)
{
_stopwatchOvershoot = 0;
}
_stopwatch.Restart();
_joypadState = GetJoypadState();
for (int i = 0; i < 17000; i++)
{
_soundPlayer.QueueAudioSample(Channels.Channel1, _gameBoy.GetAudioSample(Channels.Channel1));
_soundPlayer.QueueAudioSample(Channels.Channel2, _gameBoy.GetAudioSample(Channels.Channel2));
_soundPlayer.QueueAudioSample(Channels.Channel3, _gameBoy.GetAudioSample(Channels.Channel3));
_soundPlayer.QueueAudioSample(Channels.Channel4, _gameBoy.GetAudioSample(Channels.Channel4));
_gameBoy.AdvanceMachineCycle(_joypadState);
}
}
if (KeyboardState.IsKeyDown(Key.Escape))
{
Close();
}
if (KeyboardState.IsKeyDown(Key.Tab))
{
_fastForward = true;
}
else
{
_fastForward = false;
}
if (KeyboardState.IsKeyDown(Key.P) && LastKeyboardState.IsKeyUp(Key.P))
{
if (Size.X < 640)
{
Size = new OpenToolkit.Mathematics.Vector2i(ClientSize.X + 160, ClientSize.Y + 144);
}
}
if (KeyboardState.IsKeyDown(Key.M) && LastKeyboardState.IsKeyUp(Key.M))
{
if (Size.X > 160)
{
Size = new OpenToolkit.Mathematics.Vector2i(ClientSize.X - 160, ClientSize.Y - 144);
}
}
if (KeyboardState.IsKeyDown(Key.L) && LastKeyboardState.IsKeyUp(Key.L))
{
_gameBoy.EnableLogging();
}
base.OnUpdateFrame(e);
}