public unsafe static LightDevice Create(Control ctrl, int initWidth = -1, int initHeight = -1)
{
var ret = new LightDevice();
//initialize size
{
var width = initWidth == -1 ? ctrl.ClientSize.Width : initWidth;
var height = initHeight == -1 ? ctrl.ClientSize.Height : initHeight;
ret._ctrl = ctrl;
ret._form = ctrl.FindForm();
ret._width = width;
ret._height = height;
ret._dpi = GetDpiForWindow(ret._form.Handle);
}
try
{
using (var adapter = new ComScopeGuard())
{
//Find the adapter
adapter.Ptr = GetAdapter();
//create core objects
IntPtr swapChain, device, immediateContext;
{
var d = new SwapChainDescription(ctrl.Handle, ret._width, ret._height);
Native.D3D11CreateDeviceAndSwapChain(
adapter.Ptr, adapter.Ptr == IntPtr.Zero ? 1u : 0u,
IntPtr.Zero, 0, IntPtr.Zero, 0, 7, ref d,
out swapChain, out device, out var featureLevel, out immediateContext).Check();
ret._device = device;
ret._swapchain = swapChain;
ret._context = immediateContext;
}
//get default render target
IntPtr renderView;
{
using (var backBuffer = new ComScopeGuard())
{
SwapChain.GetBuffer(swapChain, 0, Guids.Texture2D, out backBuffer.Ptr).Check();
Device.CreateRenderTargetView(device, backBuffer.Ptr, null, out renderView).Check();
}
ret._defaultRenderView = renderView;
}
//get DXGI.Output
{
var i = Adapter.EnumOutputs(adapter.Ptr, 0, out var output);
//Sometimes this can fail, but it should not affect our other functions.
//TODO Actually we should think of supporting multiple outputs.
if (i != 0x887A0002)
{
i.Check();
}
ret._output = output;
}
ret._defaultRenderTarget = RenderTargetObject.CreateSwapchainTarget(ret);
ret.AddEventHandlers();
}
}
catch (NativeException e)
{
ret.Dispose(true);
throw e;
}
return(ret);
}
