通过

CD3D11_VIEWPORT结构 (d3d11.h)

表示视区，并提供用于创建视区的便捷方法。

语法

struct CD3D11_VIEWPORT : D3D11_VIEWPORT {
  void CD3D11_VIEWPORT();
  void CD3D11_VIEWPORT(
    const D3D11_VIEWPORT & o
  );
  void CD3D11_VIEWPORT(
    FLOAT topLeftX,
    FLOAT topLeftY,
    FLOAT width,
    FLOAT height,
    FLOAT minDepth,
    FLOAT maxDepth
  );
  void CD3D11_VIEWPORT(
    ID3D11Buffer           *unnamedParam1,
    ID3D11RenderTargetView *pRTView,
    FLOAT                  topLeftX,
    FLOAT                  minDepth,
    FLOAT                  maxDepth
  );
  void CD3D11_VIEWPORT(
    ID3D11Texture1D        *pTex1D,
    ID3D11RenderTargetView *pRTView,
    FLOAT                  topLeftX,
    FLOAT                  minDepth,
    FLOAT                  maxDepth
  );
  void CD3D11_VIEWPORT(
    ID3D11Texture2D        *pTex2D,
    ID3D11RenderTargetView *pRTView,
    FLOAT                  topLeftX,
    FLOAT                  topLeftY,
    FLOAT                  minDepth,
    FLOAT                  maxDepth
  );
  void CD3D11_VIEWPORT(
    ID3D11Texture3D        *pTex3D,
    ID3D11RenderTargetView *pRTView,
    FLOAT                  topLeftX,
    FLOAT                  topLeftY,
    FLOAT                  minDepth,
    FLOAT                  maxDepth
  );
  void ~CD3D11_VIEWPORT();
};

继承

CD3D11_VIEWPORT 结构实现D3D11_VIEWPORT。

成员

void CD3D11_VIEWPORT ()

实例化未初始化 CD3D11_VIEWPORT 结构的新实例。

void CD3D11_VIEWPORT ( const D3D11_VIEWPORT & o)

实例化 使用 D3D11_VIEWPORT 结构初始化的 CD3D11_VIEWPORT 结构的新实例。

void CD3D11_VIEWPORT ( FLOAT topLeftX、FLOAT topLeftY、FLOAT 宽度、FLOAT 高度、FLOAT minDepth、FLOAT maxDepth)

实例化 使用D3D11_VIEWPORT 值初始化的 CD3D11_VIEWPORT 结构的新实例。

void CD3D11_VIEWPORT ( ID3D11Buffer *unnamedParam1， ID3D11RenderTargetView *pRTView， FLOAT topLeftX， FLOAT minDepth， FLOAT maxDepth)

实例化 使用 D3D11_BUFFER_RTV 值初始化的 CD3D11_VIEWPORT 结构的新实例。

void CD3D11_VIEWPORT ( ID3D11Texture1D *pTex1D， ID3D11RenderTargetView *pRTView， FLOAT topLeftX， FLOAT minDepth， FLOAT maxDepth)

实例化使用D3D11_TEX1D_RTV或D3D11_TEX1D_ARRAY_RTV值初始化的CD3D11_VIEWPORT结构的新实例。

void CD3D11_VIEWPORT ( ID3D11Texture2D *pTex2D， ID3D11RenderTargetView *pRTView， FLOAT topLeftX， FLOAT topLeftY， FLOAT minDepth， FLOAT maxDepth)

实例化使用 2D 纹理值初始化的 CD3D11_VIEWPORT 结构的新实例。

void CD3D11_VIEWPORT ( ID3D11Texture3D *pTex3D， ID3D11RenderTargetView *pRTView， FLOAT topLeftX， FLOAT topLeftY， FLOAT minDepth， FLOAT maxDepth)

实例化使用 3D 纹理值初始化 的 CD3D11_VIEWPORT 结构的新实例。

void ~CD3D11_VIEWPORT ()

销毁 CD3D11_VIEWPORT 结构的实例。

注解

下面是 D3D11.h 定义 CD3D11_VIEWPORT的方式：

struct CD3D11_VIEWPORT : public D3D11_VIEWPORT
{
    CD3D11_VIEWPORT()
    {}
    explicit CD3D11_VIEWPORT( const D3D11_VIEWPORT& o ) :
        D3D11_VIEWPORT( o )
    {}
    explicit CD3D11_VIEWPORT(
        FLOAT topLeftX,
        FLOAT topLeftY,
        FLOAT width,
        FLOAT height,
        FLOAT minDepth = D3D11_MIN_DEPTH,
        FLOAT maxDepth = D3D11_MAX_DEPTH )
    {
        TopLeftX = topLeftX;
        TopLeftY = topLeftY;
        Width = width;
        Height = height;
        MinDepth = minDepth;
        MaxDepth = maxDepth;
    }
    explicit CD3D11_VIEWPORT(
        _In_ ID3D11Buffer*,
        _In_ ID3D11RenderTargetView* pRTView,
        FLOAT topLeftX = 0.0f,
        FLOAT minDepth = D3D11_MIN_DEPTH,
        FLOAT maxDepth = D3D11_MAX_DEPTH )
    {
        D3D11_RENDER_TARGET_VIEW_DESC RTVDesc;
        pRTView->GetDesc( &RTVDesc );
        UINT NumElements = 0;
        switch (RTVDesc.ViewDimension)
        {
        case D3D11_RTV_DIMENSION_BUFFER:
            NumElements = RTVDesc.Buffer.NumElements;
            break;
        default: break;
        }
        TopLeftX = topLeftX;
        TopLeftY = 0.0f;
        Width = NumElements - topLeftX;
        Height = 1.0f;
        MinDepth = minDepth;
        MaxDepth = maxDepth;
    }
    explicit CD3D11_VIEWPORT(
        _In_ ID3D11Texture1D* pTex1D,
        _In_ ID3D11RenderTargetView* pRTView,
        FLOAT topLeftX = 0.0f,
        FLOAT minDepth = D3D11_MIN_DEPTH,
        FLOAT maxDepth = D3D11_MAX_DEPTH )
    {
        D3D11_TEXTURE1D_DESC TexDesc;
        pTex1D->GetDesc( &TexDesc );
        D3D11_RENDER_TARGET_VIEW_DESC RTVDesc;
        pRTView->GetDesc( &RTVDesc );
        UINT MipSlice = 0;
        switch (RTVDesc.ViewDimension)
        {
        case D3D11_RTV_DIMENSION_TEXTURE1D:
            MipSlice = RTVDesc.Texture1D.MipSlice;
            break;
        case D3D11_RTV_DIMENSION_TEXTURE1DARRAY:
            MipSlice = RTVDesc.Texture1DArray.MipSlice;
            break;
        default: break;
        }
        const UINT SubResourceWidth = TexDesc.Width / (UINT( 1 ) << MipSlice);
        TopLeftX = topLeftX;
        TopLeftY = 0.0f;
        Width = (SubResourceWidth ? SubResourceWidth : 1) - topLeftX;
        Height = 1.0f;
        MinDepth = minDepth;
        MaxDepth = maxDepth;
    }
    explicit CD3D11_VIEWPORT(
        _In_ ID3D11Texture2D* pTex2D,
        _In_ ID3D11RenderTargetView* pRTView,
        FLOAT topLeftX = 0.0f,
        FLOAT topLeftY = 0.0f,
        FLOAT minDepth = D3D11_MIN_DEPTH,
        FLOAT maxDepth = D3D11_MAX_DEPTH )
    {
        D3D11_TEXTURE2D_DESC TexDesc;
        pTex2D->GetDesc( &TexDesc );
        D3D11_RENDER_TARGET_VIEW_DESC RTVDesc;
        pRTView->GetDesc( &RTVDesc );
        UINT MipSlice = 0;
        switch (RTVDesc.ViewDimension)
        {
        case D3D11_RTV_DIMENSION_TEXTURE2D:
            MipSlice = RTVDesc.Texture2D.MipSlice;
            break;
        case D3D11_RTV_DIMENSION_TEXTURE2DARRAY:
            MipSlice = RTVDesc.Texture2DArray.MipSlice;
            break;
        case D3D11_RTV_DIMENSION_TEXTURE2DMS:
        case D3D11_RTV_DIMENSION_TEXTURE2DMSARRAY:
            break;
        default: break;
        }
        const UINT SubResourceWidth = TexDesc.Width / (UINT( 1 ) << MipSlice);
        const UINT SubResourceHeight = TexDesc.Height / (UINT( 1 ) << MipSlice);
        TopLeftX = topLeftX;
        TopLeftY = topLeftY;
        Width = (SubResourceWidth ? SubResourceWidth : 1) - topLeftX;
        Height = (SubResourceHeight ? SubResourceHeight : 1) - topLeftY;
        MinDepth = minDepth;
        MaxDepth = maxDepth;
    }
    explicit CD3D11_VIEWPORT(
        _In_ ID3D11Texture3D* pTex3D,
        _In_ ID3D11RenderTargetView* pRTView,
        FLOAT topLeftX = 0.0f,
        FLOAT topLeftY = 0.0f,
        FLOAT minDepth = D3D11_MIN_DEPTH,
        FLOAT maxDepth = D3D11_MAX_DEPTH )
    {
        D3D11_TEXTURE3D_DESC TexDesc;
        pTex3D->GetDesc( &TexDesc );
        D3D11_RENDER_TARGET_VIEW_DESC RTVDesc;
        pRTView->GetDesc( &RTVDesc );
        UINT MipSlice = 0;
        switch (RTVDesc.ViewDimension)
        {
        case D3D11_RTV_DIMENSION_TEXTURE3D:
            MipSlice = RTVDesc.Texture3D.MipSlice;
            break;
        default: break;
        }
        const UINT SubResourceWidth = TexDesc.Width / (UINT( 1 ) << MipSlice);
        const UINT SubResourceHeight = TexDesc.Height / (UINT( 1 ) << MipSlice);
        TopLeftX = topLeftX;
        TopLeftY = topLeftY;
        Width = (SubResourceWidth ? SubResourceWidth : 1) - topLeftX;
        Height = (SubResourceHeight ? SubResourceHeight : 1) - topLeftY;
        MinDepth = minDepth;
        MaxDepth = maxDepth;
    }
    ~CD3D11_VIEWPORT() {}
    operator const D3D11_VIEWPORT&() const { return *this; }
};

要求

要求 值
最低受支持的客户端 Windows 7 [桌面应用 |UWP 应用]
最低受支持的服务器 Windows Server 2008 R2 [桌面应用 |UWP 应用]
标头 d3d11.h

另请参阅

CD3D11 帮助程序结构

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