Question

我正在使用SharpDX开发3D建模软件，其中使用Vertex和IndexBuffers绘制元素。我是3D图形和DirectX的初学者，代码不是由我编写的，我正在尝试调整它。但问题是：在调试时Alt标签工作正常，但是当锁定和解锁计算机或按Ctrl + Alt + del时，SharpDX.Direct3D9.Device的状态我正在使用“DeviceNotReset”更改。我现在正在尝试恢复设备，因此渲染可以继续。

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();
    }

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，将捕获SharpDXException并显示消息HRESULT: [0x8876086C], Module: [SharpDX.Direct3D9], ApiCode: [D3DERR_INVALIDCALL/InvalidCall], Message: Unknown

在第SC.Present(Present.None, new SharpDX.Rectangle(), new SharpDX.Rectangle(), this.Handle);行执行相同操作时，会抛出SharpDXException并显示以下消息HRESULT: [0x88760868], Module: [SharpDX.Direct3D9], ApiCode: [D3DERR_DEVICELOST/DeviceLost], Message: Unknown

我认为我应该释放资源然后重置设备，但重置方法抛出异常。或者，当SC.Present()处的异常表明设备丢失时，是否应重新创建设备？

Answer 1

我无法重置设备，而是创建了一个与上述SharpDX.Device相同的新PresentParameters。然后我只是重新初始化图形，这似乎工作正常。可能不是最有效的方式，但在这种情况下它可以工作。

在ctrl + alt + del之后重置SharpDX设备

1 个答案: