private void InitializeRenderTarget()
{
if (dcRenderTarget == null)
{
var props = new RenderTargetProperties
{
PixelFormat = new PixelFormat(
Microsoft.WindowsAPICodePack.DirectX.Graphics.Format.B8G8R8A8UNorm,
AlphaMode.Ignore),
Usage = RenderTargetUsages.GdiCompatible
};
dcRenderTarget = d2DFactory.CreateDCRenderTarget(props);
brush = dcRenderTarget.CreateSolidColorBrush(
new ColorF(
ForeColor.R / 256f,
ForeColor.G / 256f,
ForeColor.B / 256f,
1));
}
}
private void SetRenderMode(RenderModes rm)
{
lock (renderSyncObject)
{
renderMode = rm;
if (!IsInitialized && !isInitializing)
{
return;
}
//clean up objects that will be invalid after RenderTarget change
if (dcRenderTarget != null)
{
dcRenderTarget.Dispose();
dcRenderTarget = null;
}
if (hwndRenderTarget != null)
{
hwndRenderTarget.Dispose();
hwndRenderTarget = null;
}
if (bitmapRenderTarget != null)
{
bitmapRenderTarget.Dispose();
bitmapRenderTarget = null;
}
peelings.Clear();
bitmap = null; //the bitmap created in dc render target can't be used in hwnd render target
// Create the screen render target
var size = new SizeU((uint)ClientSize.Width, (uint)ClientSize.Height);
var props = new RenderTargetProperties
{
PixelFormat = new PixelFormat(
Format.B8G8R8A8UNorm,
AlphaMode.Ignore),
Usage = RenderTargetUsages.GdiCompatible
};
if (renderMode == RenderModes.DCRenderTarget || renderMode == RenderModes.BitmapRenderTargetOnPaint)
{
dcRenderTarget = d2DFactory.CreateDCRenderTarget(props);
if (renderMode == RenderModes.BitmapRenderTargetOnPaint)
{
bitmapRenderTarget =
dcRenderTarget.CreateCompatibleRenderTarget(
CompatibleRenderTargetOptions.GdiCompatible,
new Microsoft.WindowsAPICodePack.DirectX.Direct2D1.SizeF(ClientSize.Width, ClientSize.Height));
}
render = null;
}
else
{
hwndRenderTarget = d2DFactory.CreateHwndRenderTarget(
props,
new HwndRenderTargetProperties(Handle, size, Microsoft.WindowsAPICodePack.DirectX.Direct2D1.PresentOptions.RetainContents));
if (renderMode == RenderModes.BitmapRenderTargetRealTime)
{
bitmapRenderTarget =
hwndRenderTarget.CreateCompatibleRenderTarget(
CompatibleRenderTargetOptions.GdiCompatible,
new Microsoft.WindowsAPICodePack.DirectX.Direct2D1.SizeF(ClientSize.Width, ClientSize.Height));
}
render = RenderSceneInBackground;
}
//move all shapes to new rendertarget and refresh
foreach (var shape in drawingShapes)
{
shape.Bitmap = Bitmap;
shape.RenderTarget = RenderTarget;
}
RefreshAll();
}
}