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D3D12DDI_ROOT_SIGNATURE_FLAGS enumeration (d3d12umddi.h)

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Specifies options for root signature layout.

Syntax

typedef enum D3D12DDI_ROOT_SIGNATURE_FLAGS {
  D3D12DDI_ROOT_SIGNATURE_FLAG_NONE = 0x0,
  D3D12DDI_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT = 0x1,
  D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_VERTEX_SHADER_ROOT_ACCESS = 0x2,
  D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS = 0x4,
  D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS = 0x8,
  D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS = 0x10,
  D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_PIXEL_SHADER_ROOT_ACCESS = 0x20,
  D3D12DDI_ROOT_SIGNATURE_FLAG_ALLOW_STREAM_OUTPUT = 0x40,
  D3D12DDI_ROOT_SIGNATURE_FLAG_LOCAL_ROOT_SIGNATURE = 0x80,
  D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_AMPLIFICATION_SHADER_ROOT_ACCESS = 0x100,
  D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_MESH_SHADER_ROOT_ACCESS = 0x200,
  D3D12DDI_ROOT_SIGNATURE_FLAG_CBV_SRV_UAV_HEAP_DIRECTLY_INDEXED = 0x400,
  D3D12DDI_ROOT_SIGNATURE_FLAG_SAMPLER_HEAP_DIRECTLY_INDEXED = 0x800
} ;

Constants

 
D3D12DDI_ROOT_SIGNATURE_FLAG_NONE
Value: 0x0
Indicates default behavior.
D3D12DDI_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT
Value: 0x1
The app is opting in to using the Input Assembler (requiring an input layout that defines a set of vertex buffer bindings). Omitting this flag can result in one root argument space being saved on some hardware. Omit this flag if the Input Assembler is not required, though the optimization is minor.
D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_VERTEX_SHADER_ROOT_ACCESS
Value: 0x2
Denies the vertex shader access to the root signature.
D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS
Value: 0x4
Denies the hull shader access to the root signature.
D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS
Value: 0x8
Denies the domain shader access to the root signature.
D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS
Value: 0x10
Denies the geometry shader access to the root signature.
D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_PIXEL_SHADER_ROOT_ACCESS
Value: 0x20
Denies the pixel shader access to the root signature.
D3D12DDI_ROOT_SIGNATURE_FLAG_ALLOW_STREAM_OUTPUT
Value: 0x40
The root signature allows stream output.
D3D12DDI_ROOT_SIGNATURE_FLAG_LOCAL_ROOT_SIGNATURE
Value: 0x80
The local root signature is supported.
D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_AMPLIFICATION_SHADER_ROOT_ACCESS
Value: 0x100
Denies the amplification shader access to the root signature. Available starting with Windows 10, version 2004. See the Mesh Shader specification for more information about amplification shaders.
D3D12DDI_ROOT_SIGNATURE_FLAG_DENY_MESH_SHADER_ROOT_ACCESS
Value: 0x200
Denies the mesh shader access to the root signature. Available starting with Windows 10, version 2004. See the Mesh Shader specification for more information about mesh shaders.
D3D12DDI_ROOT_SIGNATURE_FLAG_CBV_SRV_UAV_HEAP_DIRECTLY_INDEXED
Value: 0x400
Shaders are allowed to index the CBV/SRV/UAV descriptor heap directly.
D3D12DDI_ROOT_SIGNATURE_FLAG_SAMPLER_HEAP_DIRECTLY_INDEXED
Value: 0x800
Shaders are allowed to index the sampler descriptor heap directly.

Remarks

See the DirectX Raytracing (DXR) functional specification for more information.

Requirements

Requirement Value
Header d3d12umddi.h