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Describes descriptors inline in the root signature version 1.0 that appear in shaders.

Syntax

Members

ShaderRegister
Type: UINT
The shader register. RegisterSpace
Type: UINT
The register space.

Remarks

D3D12_ROOT_DESCRIPTOR is the data type of the Descriptor member of D3D12_ROOT_PARAMETER. Use a D3D12_ROOT_DESCRIPTOR when you set D3D12_ROOT_PARAMETER’s ParameterType field to the D3D12_ROOT_PARAMETER_TYPE_CBV, D3D12_ROOT_PARAMETER_TYPE_SRV, or D3D12_ROOT_PARAMETER_TYPE_UAV members of D3D12_ROOT_PARAMETER_TYPE.

Requirements

Header: d3d12_xs.h or d3d12_x.h
Library: d3d12_xs.lib or d3d12_x.lib
Supported Platforms: XBOX Series consoles and XBOX One family

See Also

CD3DX12_ROOT_DESCRIPTOR Core Structures D3D12_ROOT_DESCRIPTOR1 Using descriptors directly in the root signature
Last modified on August 20, 2026