ID3D11UnorderedAccessView

Represents an unordered-access view of a resource. Unordered-access views allow read-and-write access to a resource from shaders.

Inheritance

The ID3D11UnorderedAccessView interface inherits from ID3D11View.

Members

The ID3D11UnorderedAccessView interface does not define any new members beyond those inherited from ID3D11View.

Remarks

Unordered-access views can be created from the following resource types:

To create an unordered-access view, use the D3D11CreateUnorderedAccessView function or the CreateUnorderedAccessView method of ID3D11Device.

An unordered-access view is defined by a D3D11_UNORDERED_ACCESS_VIEW_DESC structure, which specifies the resource, view dimension, format, and other view parameters.

Note

Unordered access allows for non-sequential access patterns, which are ideal for compute shaders performing complex simulations, particle systems, or data processing where access order is not guaranteed or important.

Example Usage

Creating an unordered-access view for a buffer:


// Assume pDevice is a valid ID3D11Device pointer
// Assume pBuffer is a valid ID3D11Buffer pointer representing a buffer intended for UAV use

D3D11_UNORDERED_ACCESS_VIEW_DESC uavDesc = {};
uavDesc.Format = DXGI_FORMAT_R32_UINT; // Example format
uavDesc.ViewDimension = D3D11_UAV_DIMENSION_BUFFER;
uavDesc.Buffer.FirstElement = 0;
uavDesc.Buffer.NumElements = 1024; // Number of elements in the buffer

ID3D11UnorderedAccessView* pUAV = nullptr;
HRESULT hr = pDevice->CreateUnorderedAccessView(pBuffer, &uavDesc, &pUAV);

if (SUCCEEDED(hr))
{
    // pUAV is now a valid unordered-access view
    // You can bind it to the pipeline using ID3D11DeviceContext::CSSetUnorderedAccessViews or OMSetRenderTargetsAndUnorderedAccessViews
}
else
{
    // Handle error
}

// Remember to release the UAV when done
// if (pUAV) pUAV->Release();

Key Concepts

See Also