ctrl + alt + del 后重置 SharpDX 设备答案

【问题标题】：Resetting SharpDX device after ctrl + alt + delctrl + alt + del 后重置 SharpDX 设备
【发布时间】：2016-08-04 04:20:35
【问题描述】：

我正在使用 SharpDX 开发 3D 建模软件，其中元素是使用 Vertex- 和 IndexBuffers 绘制的。我是 3D 图形和 DirectX 的初学者，代码不是我写的，我正在尝试调整它。但问题是：调试时 Alt 选项卡工作正常，但是当锁定和解锁计算机或按 ctrl + alt + del SharpDX.Direct3D9.Device 的状态时，我正在使用对“DeviceNotReset”的更改。我现在正在尝试恢复设备，以便继续渲染。

创建设备：

public ModelerControl(MainViewPresenter parent)
    {
        PresentParameters par = new PresentParameters();
        par.Windowed = true;
        par.SwapEffect = SharpDX.Direct3D9.SwapEffect.Discard;
        par.PresentationInterval = PresentInterval.One;
        par.AutoDepthStencilFormat = SharpDX.Direct3D9.Format.D16;
        par.EnableAutoDepthStencil = true;
        par.BackBufferFormat = SharpDX.Direct3D9.Format.X8R8G8B8;
        par.BackBufferHeight = this.ClientSize.Height;
        par.BackBufferWidth = this.ClientSize.Width;

        if (device == null)
        {
            device = new SharpDX.Direct3D9.Device(new Direct3D(), 0, DeviceType.Hardware, this.Handle, CreateFlags.SoftwareVertexProcessing, par);

            SC = device.GetSwapChain(0);
        }
        else
        {
            SC = new SharpDX.Direct3D9.SwapChain(device, pp);
        }

        this.parentPresenter = parent;
        InitializeComponent();
    }

正在渲染并尝试重置设备：

public void Render()
    {
        lock (this)
        {
            ModelerProperties properties = ProjectModel.Instance.Project.ModelerPropertyList;
            if (properties == null)
                return;
            if (!properties.IsPropertySenderInited)
            {
                properties.PropertyChanged += new PropertyChangedEventHandler(ModelerControl_PropertyChanged);
                properties.IsPropertySenderInited = true;
            }

            int index = 0;

            if (device == null)
                return;
            if (clock == null)
                return;
            if (SC.IsDisposed)
                return;
            if (this.IsDisposed)
                return;

            SharpDX.Result result = device.TestCooperativeLevel();

            if(result == ResultCode.DeviceNotReset)
            {
                PresentParameters pp = new PresentParameters();
                pp.Windowed = true;
                pp.SwapEffect = SharpDX.Direct3D9.SwapEffect.Discard;
                pp.PresentationInterval = PresentInterval.One;
                pp.AutoDepthStencilFormat = SharpDX.Direct3D9.Format.D16;
                pp.EnableAutoDepthStencil = true;
                pp.BackBufferFormat = SharpDX.Direct3D9.Format.X8R8G8B8;
                pp.BackBufferHeight = this.ClientSize.Height;
                pp.BackBufferWidth = this.ClientSize.Width;

                try
                {
                    device.Reset(pp);
                }
                catch { }
            }

            SharpDX.Direct3D9.Surface bb = SC.GetBackBuffer(0);
            device.SetRenderTarget(0, bb);

            device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, properties.GetBackGroundColor(), 1.0f, 0);
            device.BeginScene();

            //Defining matrices

            device.SetTransform(TransformState.World, ref mScale);
            device.SetTransform(TransformState.View, ref mView);
            device.SetTransform(TransformState.Projection, ref mProj);

            device.SetRenderState(RenderState.PointSpriteEnable, true);
            device.SetRenderState(RenderState.PointScaleA, 0f);
            device.SetRenderState(RenderState.PointScaleB, 0f);
            device.SetRenderState(RenderState.PointScaleC, 100f);
            device.SetRenderState(RenderState.Lighting, true);
            device.SetRenderState(RenderState.Ambient, System.Drawing.Color.White.ToArgb());
            device.SetRenderState(RenderState.ZEnable, ZBufferType.UseZBuffer);
            device.SetRenderState(RenderState.NormalizeNormals, true);
            device.SetRenderState(RenderState.CullMode, Cull.Counterclockwise);

            device.SetRenderState(RenderState.AlphaBlendEnable, true);
            device.SetRenderState(RenderState.BlendOperation, BlendOperation.Add);
            device.SetRenderState(RenderState.SourceBlend, Blend.SourceAlpha);
            device.SetRenderState(RenderState.DestinationBlend, Blend.InverseSourceAlpha);

            //Drawing elements

            device.EndScene();

            try
            {
                 SC.Present(Present.None, new SharpDX.Rectangle(), new SharpDX.Rectangle(), this.Handle);
            }
            catch { }

            bb.Dispose();
        }
    }

在设备重置时添加断点，按 ctrl + alt + delete 并继续时，会捕获 SharpDXException 并显示消息 HRESULT: [0x8876086C], Module: [SharpDX.Direct3D9], ApiCode: [D3DERR_INVALIDCALL/InvalidCall], Message: Unknown

做同样的事情，但在SC.Present(Present.None, new SharpDX.Rectangle(), new SharpDX.Rectangle(), this.Handle); 行，会抛出一个 SharpDXException 并显示以下消息 HRESULT: [0x88760868], Module: [SharpDX.Direct3D9], ApiCode: [D3DERR_DEVICELOST/DeviceLost], Message: Unknown

我想我应该释放资源然后重置设备，但重置方法抛出异常。还是应该在SC.Present() 的异常表明设备丢失时重新创建设备？

【问题讨论】：

标签： c# .net visual-studio directx sharpdx

【解决方案1】：

我无法让设备重置工作，而是创建了一个新的SharpDX.Device，与上面的PresentParameters 相同。然后我只是重新初始化了图形，这似乎工作正常。可能不是最有效的方法，但在这种情况下它有效。

【讨论】：