private void OnCompTargetRender(object sender, EventArgs e)
{
if (_context == null || _renderer == null)
{
return;
}
if (!ReferenceEquals(GraphicsContext.CurrentContext, _context))
{
_context?.MakeCurrent(_windowInfo);
}
if (_resizeStartStamp != 0)
{
if (_resizeStartStamp + ResizeUpdateInterval > _stopwatch.ElapsedMilliseconds)
{
return;
}
_renderer?.DeleteBuffers();
var width = (int)RenderSize.Width;
var height = (int)RenderSize.Height;
_renderer = new GLWpfControlRenderer(width, height, _image, _settings.UseHardwareRender, _settings.PixelBufferObjectCount);
_resizeStartStamp = 0;
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, FrameBuffer);
TimeSpan deltaTime = _stopwatch.Elapsed - _lastFrameStamp;
Render?.Invoke(deltaTime);
_renderer.UpdateImage();
InvalidateVisual();
_lastFrameStamp = _stopwatch.Elapsed;
}
private void InitOpenGL()
{
var mode = new GraphicsMode(ColorFormat.Empty, 0, 0, 0, 0, 0, false);
_context = new GraphicsContext(mode, _windowInfo, _settings.MajorVersion, _settings.MinorVersion, _settings.GraphicsContextFlags);
_context.LoadAll();
_context.MakeCurrent(_windowInfo);
var width = (int)RenderSize.Width;
var height = (int)RenderSize.Height;
_renderer = new GLWpfControlRenderer(width, height, _image, _settings.UseHardwareRender, _settings.PixelBufferObjectCount);
}
private void OnLoaded(object sender, RoutedEventArgs args)
{
if (_context != null)
{
return;
}
if (_settings.ContextToUse == null)
{
var window = Window.GetWindow(this);
var baseHandle = window is null ? IntPtr.Zero : new WindowInteropHelper(window).Handle;
_hwnd = new HwndSource(0, 0, 0, 0, 0, "GLWpfControl", baseHandle);
_windowInfo = Utilities.CreateWindowsWindowInfo(_hwnd.Handle);
var mode = new GraphicsMode(ColorFormat.Empty, 0, 0, 0, 0, 0, false);
_context = new GraphicsContext(mode, _windowInfo, _settings.MajorVersion, _settings.MinorVersion,
_settings.GraphicsContextFlags);
_context.LoadAll();
_context.MakeCurrent(_windowInfo);
}
else
{
_context = _settings.ContextToUse;
}
if (_renderer == null)
{
var width = (int)RenderSize.Width;
var height = (int)RenderSize.Height;
_renderer = new GLWpfControlRenderer(width, height, _image, _settings.UseHardwareRender, _settings.PixelBufferObjectCount);
}
_imageRectangle = new Rect(0, 0, RenderSize.Width, RenderSize.Height);
_translateTransform = new TranslateTransform(0, RenderSize.Height);
GL.Viewport(0, 0, (int)RenderSize.Width, (int)RenderSize.Height);
Ready?.Invoke();
}