Hololens相关数据文档

1.HolographicSpace class

    CreateForCoreWindow  ：首先创建一个HolographicSpace与指定窗口的CoreApplicationView相对应

2.SpatialLocator class

    GetDefault ： 得到了SpatialLocator实例跟踪当前设备的位置,如全息透镜,相对于用户的环境。

3.每一帧都更新update

    

 4.根据上面的图片 首先创建HolographicFrame类型的变量 保存下一帧图像

HolographicFrame类表示 “应用必须向所有照相机呈现的全息照相内容的帧”。

5.进入到EnsureCameraResources函数

 pCameraResources->CreateResourcesForBackBuffer(this, renderingParameters);

下面进入这个函数

// Updates resources associated with a holographic camera's swap chain.
// The app does not access the swap chain directly, but it does create
// resource views for the back buffer.
void DX::CameraResources::CreateResourcesForBackBuffer(
    DX::DeviceResources* pDeviceResources,
    HolographicCameraRenderingParameters^ cameraParameters
    )
{
    const auto device = pDeviceResources->GetD3DDevice(); //获取一个3D设备描述符
    // Get the WinRT object representing the holographic camera's back buffer.
    IDirect3DSurface^ surface = cameraParameters->Direct3D11BackBuffer;
    // Get a DXGI interface for the holographic camera's back buffer.
    // Holographic cameras do not provide the DXGI swap chain, which is owned
    // by the system. The Direct3D back buffer resource is provided using WinRT
    // interop APIs.
    ComPtr<ID3D11Resource> resource;
    ThrowIfFailed(
        GetDXGIInterfaceFromObject(surface, IID_PPV_ARGS(&resource))
        );
    // Get a Direct3D interface for the holographic camera's back buffer.
    ComPtr<ID3D11Texture2D> cameraBackBuffer;
    ThrowIfFailed(
        resource.As(&cameraBackBuffer)
        );
    // Determine if the back buffer has changed. If so, ensure that the render target view
    // is for the current back buffer.
    if (m_d3dBackBuffer.Get() != cameraBackBuffer.Get())
    {
        // This can change every frame as the system moves to the next buffer in the
        // swap chain. This mode of operation will occur when certain rendering modes
        // are activated.
        m_d3dBackBuffer = cameraBackBuffer;
        // Create a render target view of the back buffer.
        // Creating this resource is inexpensive, and is better than keeping track of
        // the back buffers in order to pre-allocate render target views for each one.
        DX::ThrowIfFailed(
            device->CreateRenderTargetView(
                m_d3dBackBuffer.Get(),
                nullptr,
                &m_d3dRenderTargetView
                )
            );
        // Get the DXGI format for the back buffer.
        // This information can be accessed by the app using CameraResources::GetBackBufferDXGIFormat().
        D3D11_TEXTURE2D_DESC backBufferDesc;
        m_d3dBackBuffer->GetDesc(&backBufferDesc);
        m_dxgiFormat = backBufferDesc.Format;
        // Check for render target size changes.
        Windows::Foundation::Size currentSize = m_holographicCamera->RenderTargetSize;
        if (m_d3dRenderTargetSize != currentSize)
        {
            // Set render target size.
            m_d3dRenderTargetSize = currentSize;
            // A new depth stencil view is also needed.
            m_d3dDepthStencilView.Reset();  //创建一个新的深度图
        }
    }
    // Refresh depth stencil resources, if needed.
    if (m_d3dDepthStencilView == nullptr)
    {
        // Create a depth stencil view for use with 3D rendering if needed.
        CD3D11_TEXTURE2D_DESC depthStencilDesc(
            DXGI_FORMAT_D16_UNORM,
            static_cast<UINT>(m_d3dRenderTargetSize.Width),
            static_cast<UINT>(m_d3dRenderTargetSize.Height),
            m_isStereo ? 2 : 1, // Create two textures when rendering in stereo.
            1, // Use a single mipmap level.
            D3D11_BIND_DEPTH_STENCIL
            );
        ComPtr<ID3D11Texture2D> depthStencil;
        DX::ThrowIfFailed(
            device->CreateTexture2D(
                &depthStencilDesc,
                nullptr,
                &depthStencil
                )
            );
        CD3D11_DEPTH_STENCIL_VIEW_DESC depthStencilViewDesc(
            m_isStereo ? D3D11_DSV_DIMENSION_TEXTURE2DARRAY : D3D11_DSV_DIMENSION_TEXTURE2D
            );
        DX::ThrowIfFailed(
            device->CreateDepthStencilView(
                depthStencil.Get(),
                &depthStencilViewDesc,
                &m_d3dDepthStencilView
                )
            );
    }
    // Create the constant buffer, if needed.
    if (m_viewProjectionConstantBuffer == nullptr)
    {
        // Create a constant buffer to store view and projection matrices for the camera.
        CD3D11_BUFFER_DESC constantBufferDesc(sizeof(ViewProjectionConstantBuffer), D3D11_BIND_CONSTANT_BUFFER);
        DX::ThrowIfFailed(
            device->CreateBuffer(
                &constantBufferDesc,
                nullptr,
                &m_viewProjectionConstantBuffer
                )
            );
    }
}

sufaceMesh.cpp

 

此部分功能为加载红色未扫描的部分

此部分

 

SimpleLightingPixelShader

此shder为填充线条的shader 可自行改变颜色 但是改变一次无法改回来