protected virtual void DrawFrame()
{
if (Root == null)
{
return;
}
using (drawMonitor.BeginCollecting(PerformanceCollectionType.GLReset))
{
GLWrapper.Reset(Root.DrawSize);
GLWrapper.ClearColour(Color4.Black);
}
while (true)
{
using (var buffer = DrawRoots.Get(UsageType.Read))
{
if (buffer?.Object != null && buffer.FrameId != lastDrawFrameId)
{
buffer.Object.Draw(null);
lastDrawFrameId = buffer.FrameId;
break;
}
}
Thread.Sleep(1);
}
GLWrapper.FlushCurrentBatch();
using (drawMonitor.BeginCollecting(PerformanceCollectionType.SwapBuffer))
Window.SwapBuffers();
}
private void drawLoop()
{
GLControl.Initialize();
GLWrapper.Initialize();
while (!exitRequested)
{
DrawMonitor.NewFrame(DrawClock);
using (DrawMonitor.BeginCollecting(PerformanceCollectionType.Draw))
{
GLWrapper.Reset(Size);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
pendingRootNode?.DrawSubTree();
}
using (DrawMonitor.BeginCollecting(PerformanceCollectionType.SwapBuffer))
{
GLControl.SwapBuffers();
GLControl.Invalidate();
}
using (DrawMonitor.BeginCollecting(PerformanceCollectionType.Sleep))
DrawClock.ProcessFrame();
}
}
protected virtual void DrawInitialize()
{
Window.MakeCurrent();
GLWrapper.Initialize(this);
setVSyncMode();
GLWrapper.Reset(new Vector2(Window.ClientSize.Width, Window.ClientSize.Height));
GLWrapper.ClearColour(Color4.Black);
}
protected virtual void DrawFrame()
{
using (DrawMonitor.BeginCollecting(PerformanceCollectionType.Draw))
{
GLWrapper.Reset(Size);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
using (var buffer = DrawRoots.Get(UsageType.Read))
buffer?.Object?.DrawSubTree();
}
}
protected sealed override void OnInitialize()
{
var window = host.Window;
if (window != null)
{
window.MakeCurrent();
GLWrapper.Initialize(host);
GLWrapper.Reset(new Vector2(window.ClientSize.Width, window.ClientSize.Height));
}
}
protected virtual void OnIdle(object sender, EventArgs args)
{
GLWrapper.Reset();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
UpdateSubTree();
DrawSubTree();
Idle?.Invoke(this, EventArgs.Empty);
GLControl.SwapBuffers();
}
protected virtual void DrawFrame()
{
using (DrawMonitor.BeginCollecting(PerformanceCollectionType.GLReset))
{
GLWrapper.Reset(DrawSize);
GLWrapper.ClearColour(Color4.Black);
}
using (var buffer = DrawRoots.Get(UsageType.Read))
buffer?.Object?.Draw(null);
GLWrapper.FlushCurrentBatch();
using (DrawMonitor.BeginCollecting(PerformanceCollectionType.SwapBuffer))
Window.SwapBuffers();
}
protected virtual void DrawFrame()
{
if (Root == null)
{
return;
}
while (!exitInitiated)
{
using (var buffer = DrawRoots.Get(UsageType.Read))
{
if (buffer?.Object == null || buffer.FrameId == lastDrawFrameId)
{
Thread.Sleep(1);
continue;
}
using (drawMonitor.BeginCollecting(PerformanceCollectionType.GLReset))
{
GLWrapper.Reset(new Vector2(Window.ClientSize.Width, Window.ClientSize.Height));
GLWrapper.ClearColour(Color4.Black);
}
buffer.Object.Draw(null);
lastDrawFrameId = buffer.FrameId;
break;
}
}
GLWrapper.FlushCurrentBatch();
using (drawMonitor.BeginCollecting(PerformanceCollectionType.SwapBuffer))
{
Window.SwapBuffers();
if (Window.VSync == VSyncMode.On)
{
// without glFinish, vsync is basically unplayable due to the extra latency introduced.
// we will likely want to give the user control over this in the future as an advanced setting.
GL.Finish();
}
}
}