private void Control_Render(object sender, NativeWindowEventArgs e)
{
long now = DateTime.Now.Ticks;
const long inv60FPS = 10000000 / 60;
if (now - lastRenderTime > inv60FPS)
{
lastRenderTime = now;
SparrowSharp.Step();
}
}
private void NativeWindow_ContextCreated(object sender, NativeWindowEventArgs e)
{
lastRenderTime = DateTime.Now.Ticks;
SparrowSharp.NativeWindow = this;
SparrowSharp.Start(_width, _height, _width, _height, _rootClass);
//SparrowSharp.MouseIconChange += OnCursorChange;
_nativeWindow.MouseDown += OnMouseButtonDown;
_nativeWindow.MouseUp += OnMouseButtonUp;
_nativeWindow.MouseMove += OnMouseMove;
_nativeWindow.Render += Control_Render;
_nativeWindow.Resize += OnResize;
}
private void RenderTimerCallback(object state)
{
// Rendering on main UI thread
Android.App.Application.SynchronizationContext.Send(delegate {
if (_DeviceContext == null)
{
return;
}
bool needsSwap = SparrowSharp.Step();
if (needsSwap)
{
_DeviceContext.SwapBuffers();
}
int elapsed = (int)sw.ElapsedMilliseconds - 1;
if (elapsed > _RenderTimerDueTime)
{
elapsed = _RenderTimerDueTime;
}
_RenderTimer.Change(_RenderTimerDueTime - elapsed, Timeout.Infinite);
sw.Restart();
}, null);
}
/// <summary>
/// This is called immediately after the surface is first created.
/// </summary>
/// <param name="holder">
/// The SurfaceHolder whose surface is being created.
/// </param>
public void SurfaceCreated(ISurfaceHolder holder)
{
Debug.WriteLine("Sparrow: SurfaceCreated");
// Get actual native window handle
_NativeWindowHandle = ANativeWindow_fromSurface(JNIEnv.Handle, holder.Surface.Handle);
// Create device context
_DeviceContext = DeviceContext.Create(IntPtr.Zero, _NativeWindowHandle);
_DeviceContext.IncRef();
// Set pixel format
DevicePixelFormatCollection pixelFormats = _DeviceContext.PixelsFormats;
DevicePixelFormat controlReqFormat = new DevicePixelFormat();
controlReqFormat.RgbaUnsigned = true;
controlReqFormat.RenderWindow = true;
controlReqFormat.ColorBits = 24;
//controlReqFormat.DepthBits = (int)DepthBits;
//controlReqFormat.StencilBits = (int)StencilBits;
//controlReqFormat.MultisampleBits = (int)MultisampleBits;
//controlReqFormat.DoubleBuffer = true;
List <DevicePixelFormat> matchingPixelFormats = pixelFormats.Choose(controlReqFormat);
if (matchingPixelFormats.Count == 0)
{
throw new InvalidOperationException("unable to find a suitable pixel format");
}
_DeviceContext.SetPixelFormat(matchingPixelFormats[0]);
// Create OpenGL context using compatibility profile
if ((_RenderContext = _DeviceContext.CreateContext(IntPtr.Zero)) == IntPtr.Zero)
{
throw new InvalidOperationException("unable to create render context");
}
// Make context current
if (_DeviceContext.MakeCurrent(_RenderContext) == false)
{
throw new InvalidOperationException("unable to make context current");
}
Invalidate();
if (_RenderTimer != null)
{
throw new InvalidOperationException("rendering already active");
}
if (SparrowSharp.Root == null)
{
SparrowSharp.NativeWindow = this;
// TODO get viewport dimensions?
SparrowSharp.Start((uint)Width, (uint)Height, (uint)Width, (uint)Height, _rootClass);
}
else
{
SparrowSharp.OnContextCreated();
}
_RenderTimerDueTime = (int)Math.Ceiling(1000.0f / 60.0f);
_RenderTimer = new Timer(RenderTimerCallback, null, _RenderTimerDueTime, Timeout.Infinite);
}
