例子见：Microsoft DirectX SDK basic compute11

shader代码：

1. struct BufType{    int i;    float f;};StructuredBuffer
          
            Buffer0 : register(t0);StructuredBuffer
           
             Buffer1 : register(t1);RWStructuredBuffer
            
              BufferOut : register(u0);[numthreads(1, 1, 1)]void CSMain( uint3 DTid : SV_DispatchThreadID ){    BufferOut[DTid.x].i = Buffer0[DTid.x].i + Buffer1[DTid.x].i;    BufferOut[DTid.x].f = Buffer0[DTid.x].f + Buffer1[DTid.x].f;}
            
           
          

    

c++代码：

// 构造并初始化Buffer0和Buffer1; g_vBuf0和g_vBuf1为BufType数组，数量为Num_Elements = 1024        CreateStructuredBuffer( g_pDevice, sizeof(BufType), NUM_ELEMENTS, &g_vBuf0[0], &g_pBuf0 );        CreateStructuredBuffer( g_pDevice, sizeof(BufType), NUM_ELEMENTS, &g_vBuf1[0], &g_pBuf1 );        CreateStructuredBuffer( g_pDevice, sizeof(BufType), NUM_ELEMENTS, NULL, &g_pBufResult );    // 构造ShaderResourceView作为input buffer， UnorderedAccessView作为outputBuffer        printf( "Creating buffer views..." );        CreateBufferSRV( g_pDevice, g_pBuf0, &g_pBuf0SRV );        CreateBufferSRV( g_pDevice, g_pBuf1, &g_pBuf1SRV );        CreateBufferUAV( g_pDevice, g_pBufResult, &g_pBufResultUAV );    // 设置deviceContext具体状态：g_pCS为computeShader指针        printf( "Running Compute Shader..." );        ID3D11ShaderResourceView* aRViews[2] = { g_pBuf0SRV, g_pBuf1SRV };        RunComputeShader( g_pContext, g_pCS, 2, aRViews, NULL, NULL, 0, g_pBufResultUAV, NUM_ELEMENTS, 1, 1 );    // 子函数    //--------------------------------------------------------------------------------------    // Create Structured Buffer    //--------------------------------------------------------------------------------------    HRESULT CreateStructuredBuffer( ID3D11Device* pDevice, UINT uElementSize, UINT uCount, VOID* pInitData, ID3D11Buffer** ppBufOut ) {        *ppBufOut = NULL;        D3D11_BUFFER_DESC desc;        ZeroMemory( &desc, sizeof(desc) );        desc.BindFlags = D3D11_BIND_UNORDERED_ACCESS | D3D11_BIND_SHADER_RESOURCE;        desc.ByteWidth = uElementSize * uCount;        desc.MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;        desc.StructureByteStride = uElementSize;        if ( pInitData )    {            D3D11_SUBRESOURCE_DATA InitData;            InitData.pSysMem = pInitData;            return pDevice->CreateBuffer( &desc, &InitData, ppBufOut );        } else            return pDevice->CreateBuffer( &desc, NULL, ppBufOut );    }    //--------------------------------------------------------------------------------------    // Create Shader Resource View for Structured or Raw Buffers    //--------------------------------------------------------------------------------------    HRESULT CreateBufferSRV( ID3D11Device* pDevice, ID3D11Buffer* pBuffer, ID3D11ShaderResourceView** ppSRVOut ) {        D3D11_BUFFER_DESC descBuf;        ZeroMemory( &descBuf, sizeof(descBuf) );        pBuffer->GetDesc( &descBuf );        D3D11_SHADER_RESOURCE_VIEW_DESC desc;        ZeroMemory( &desc, sizeof(desc) );        desc.ViewDimension = D3D11_SRV_DIMENSION_BUFFEREX;        desc.BufferEx.FirstElement = 0;        if ( descBuf.MiscFlags & D3D11_RESOURCE_MISC_BUFFER_STRUCTURED )    {            // This is a Structured Buffer            desc.Format = DXGI_FORMAT_UNKNOWN;            desc.BufferEx.NumElements = descBuf.ByteWidth / descBuf.StructureByteStride;        } else    {            return E_INVALIDARG;        }        return pDevice->CreateShaderResourceView( pBuffer, &desc, ppSRVOut );    }    //--------------------------------------------------------------------------------------    // Create Unordered Access View for Structured or Raw Buffers    //--------------------------------------------------------------------------------------    HRESULT CreateBufferUAV( ID3D11Device* pDevice, ID3D11Buffer* pBuffer, ID3D11UnorderedAccessView** ppUAVOut ) {        D3D11_BUFFER_DESC descBuf;        ZeroMemory( &descBuf, sizeof(descBuf) );        pBuffer->GetDesc( &descBuf );                   D3D11_UNORDERED_ACCESS_VIEW_DESC desc;        ZeroMemory( &desc, sizeof(desc) );        desc.ViewDimension = D3D11_UAV_DIMENSION_BUFFER;        desc.Buffer.FirstElement = 0;        if ( descBuf.MiscFlags & D3D11_RESOURCE_MISC_BUFFER_STRUCTURED )    {            // This is a Structured Buffer            desc.Format = DXGI_FORMAT_UNKNOWN;      // Format must be must be DXGI_FORMAT_UNKNOWN, when creating a View of a Structured Buffer            desc.Buffer.NumElements = descBuf.ByteWidth / descBuf.StructureByteStride;        } else    {            return E_INVALIDARG;        }               return pDevice->CreateUnorderedAccessView( pBuffer, &desc, ppUAVOut );    }    //--------------------------------------------------------------------------------------    // Run CS    //--------------------------------------------------------------------------------------    void RunComputeShader( ID3D11DeviceContext* pd3dImmediateContext,                          ID3D11ComputeShader* pComputeShader,                          UINT nNumViews, ID3D11ShaderResourceView** pShaderResourceViews,                          ID3D11Buffer* pCBCS, void* pCSData, DWORD dwNumDataBytes,                          ID3D11UnorderedAccessView* pUnorderedAccessView,                          UINT X, UINT Y, UINT Z ) {        pd3dImmediateContext->CSSetShader( pComputeShader, NULL, 0 );        pd3dImmediateContext->CSSetShaderResources( 0, nNumViews, pShaderResourceViews );        pd3dImmediateContext->CSSetUnorderedAccessViews( 0, 1, &pUnorderedAccessView, NULL );        pd3dImmediateContext->Dispatch( X, Y, Z );      // 通知显卡执行        pd3dImmediateContext->CSSetShader( NULL, NULL, 0 );        ID3D11UnorderedAccessView* ppUAViewNULL[1] = { NULL };        pd3dImmediateContext->CSSetUnorderedAccessViews( 0, 1, ppUAViewNULL, NULL );        ID3D11ShaderResourceView* ppSRVNULL[2] = { NULL, NULL };        pd3dImmediateContext->CSSetShaderResources( 0, 2, ppSRVNULL );        ID3D11Buffer* ppCBNULL[1] = { NULL };        pd3dImmediateContext->CSSetConstantBuffers( 0, 1, ppCBNULL );    }