ID3D12PipelineState::GetDescriptorX Method

Gets the descriptor for this ID3D12PipelineState, for using ID3D12GraphicsCommandList::ExecuteIndirect.

Syntax

public:
void GetDescriptorX(
         D3D12XBOX_DESCRIPTOR_PIPELINE_STATE *pDescriptor
)

Parameters

pDescriptor
Type: D3D12XBOX_DESCRIPTOR_PIPELINE_STATE *

[out] The descriptor, as a pointer to a D3D12XBOX_DESCRIPTOR_PIPELINE_STATE structure.

Return value

Type: void

Returns nothing.

Remarks

This method enables querying of a Pipeline State descriptor for ID3D12GraphicsCommandList::ExecuteIndirect purposes. The descriptor must always be queried via GetDescriptorX after the corresponding Pipeline State object is created; it is not possible to statically persist the descriptor across Pipeline State object lifetimes.

The implementation of ID3D12GraphicsCommandList::ExecuteIndirect imposes various limitations:

Every bit of the argument buffer has to be streamed, including any dwords that are skipped over by the stride. Therefore, the ByteStride member of the D3D12_COMMAND_SIGNATURE_DESC structure is limited to no more than 256.
The command processor has a limited space for arguments. Therefore, the NumArgumentDescs member of the D3D12_COMMAND_SIGNATURE_DESC structure is limited to no more than 16.
In the Constant structure within the D3D12_INDIRECT_ARGUMENT_DESC structure, Constant.Num32BitValuesToSet can’t be 16 or more.

Requirements

Header: Declared in d3d12_x.h.

Library: Use d3d12_x.lib.