Question

在图形应用程序中，我将图像渲染到纹理，然后我在3d模型上使用该纹理。

我的问题如下：当应用程序启动时，一切都很好，但是如果我调整渲染的视图大小并使其变大，则3D模型上的纹理消失（它不会变黑，我认为所有值都变为1）。使图像变小不会使纹理消失，但显示不正确（未调整大小）。

以下是一些解释性图片：

调整较小的 未调整大小 调整大小，1像素更大就足以使图像消失。

生成renderview的代码是：

private void CreateRenderToTexture(Panel view)
    {
        Texture2DDescription t2d = new Texture2DDescription()
        {
            Height = view.Height,
            Width = view.Width,
            Format = Format.R32G32B32A32_Float,
            BindFlags = BindFlags.ShaderResource | BindFlags.RenderTarget, //| BindFlags.UnorderedAccess,
            CpuAccessFlags = CpuAccessFlags.None,
            OptionFlags = ResourceOptionFlags.None,
            SampleDescription = new SampleDescription(_multisample, 0),
            MipLevels = 1,
            Usage = ResourceUsage.Default,
            ArraySize = 1,
        };
        _svgTexture = new Texture2D(_device, t2d);
        _svgRenderView = new RenderTargetView(_device, _svgTexture);         
    }

 private void RenderSVGToTexture()
    {            
        _camera.SetDefaultProjection();
        UpdatePerFrameBuffers();
        _dc.OutputMerger.SetTargets(_depthStencil, _svgRenderView);//depth stencil has same dimension as all other buffers
        _dc.ClearRenderTargetView(_svgRenderView, new Color4(1.0f, 1.0f, 1.0f));
        _dc.ClearDepthStencilView(_depthStencil, DepthStencilClearFlags.Depth | DepthStencilClearFlags.Stencil, 1.0f, 0);

        Entity e;
        if (RenderingManager.Scene.Entity2DExists("svgimage"))
        {
            RenderingManager.Scene.GetEntity2D("svgimage", out e);
            e.Draw(_dc);
        }
        _swapChain.Present(0, PresentFlags.None);
    }

渲染3D场景时，我在渲染模型之前调用此函数：

 private void SetTexture()
    {
        Entity e;
        if (!RenderingManager.Scene.GetEntity3D("model3d", out e))
            return;

        e.ShaderType = ResourceManager.ShaderType.MAIN_MODEL;
        if (ResourceManager.SVGTexture == null )
        {
            e.ShaderType = ResourceManager.ShaderType.PNUVNOTEX;
            return;
        }
        SamplerDescription a = new SamplerDescription();
        a.AddressU = TextureAddressMode.Wrap;
        a.AddressV = TextureAddressMode.Wrap;
        a.AddressW = TextureAddressMode.Wrap;

        a.Filter = Filter.MinPointMagMipLinear;

        SamplerState b = SamplerState.FromDescription(ResourceManager.Device, a);

        ShaderResourceView svgTexResourceView = new ShaderResourceView(ResourceManager.Device, Texture2D.FromPointer(ResourceManager.SVGTexture.ComPointer));
        ResourceManager.Device.ImmediateContext.PixelShader.SetShaderResource(svgTexResourceView, 0);           

        ResourceManager.Device.ImmediateContext.PixelShader.SetSampler(b, 0);
        b.Dispose();
        svgTexResourceView.Dispose();
    }

像素着色器：

    Texture2D svg : register(t0);
    Texture2D errorEstimate : register(t1);
    SamplerState ss : register(s0);

    float4 main(float4 position : SV_POSITION, float4 color : COLOR, float2 uv : UV) : SV_Target
    {
        return color * svg.Sample(ss, uv);// *errorEstimate.Sample(ss, uv);
    }

我不明白我做错了什么，我希望你能让我看到我正在做的错误。谢谢，对不好的英语抱歉！

Answer 1

因为它（几乎）总是变成我犯了一个非常愚蠢的错误。

我没有调用正确的调整大小功能。

基本上在Renderer2D类中有一个DoResize函数可以调整仅2d缓冲区的大小，而在抽象的Renderer类中，还有其余的缓冲区调整大小。错误是在父类中我调用了错误的基本调整大小函数！

家长班：

 protected override void DoResize(uint width, uint height)
    {
        if (width == 0 || height == 0)
            return;
        base.DoResize(width, height); //Here i was calling base.Resize (which was deprecated after a change in the application architecture)
        _camera.Width = width;
        _camera.Height = height;

        _svgTexture.Dispose();
        _svgRenderView.Dispose();

        CreateRenderToTexture(_viewReference);
        ResizePending = false;
    }

基础课程

 protected virtual void DoResize(uint width, uint height)
    {
        Width = width;
        Height = height;

        _viewport = new Viewport(0, 0, Width, Height);

        _renderTarget.Dispose();

        if (_swapChain.ResizeBuffers(2, (int)width, (int)height, Format.Unknown, SwapChainFlags.AllowModeSwitch).IsFailure)
            Console.WriteLine("An error occured while resizing buffers.");
        using (var resource = Resource.FromSwapChain<Texture2D>(_swapChain, 0))
            _renderTarget = new RenderTargetView(_device, resource);

        _depthStencil.Dispose();
        CreateDepthBuffer();
    }

也许我发布的代码对于那些试图对纹理进行渲染的人来说可能会有所帮助，因为我发现总会有人无法使其工作：）

调整大小后渲染到纹理失败

1 个答案: