D3D12_DISPATCH_RAYS_DESC structure (d3d12.h)
Describes the properties of a ray dispatch operation initiated with a call to ID3D12GraphicsCommandList4::DispatchRays.
Syntax
typedef struct D3D12_DISPATCH_RAYS_DESC {
D3D12_GPU_VIRTUAL_ADDRESS_RANGE RayGenerationShaderRecord;
D3D12_GPU_VIRTUAL_ADDRESS_RANGE_AND_STRIDE MissShaderTable;
D3D12_GPU_VIRTUAL_ADDRESS_RANGE_AND_STRIDE HitGroupTable;
D3D12_GPU_VIRTUAL_ADDRESS_RANGE_AND_STRIDE CallableShaderTable;
UINT Width;
UINT Height;
UINT Depth;
} D3D12_DISPATCH_RAYS_DESC;
Members
RayGenerationShaderRecord
The shader record for the ray generation shader to use.
The memory pointed to must be in state D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE.
The address must be aligned to 64 bytes, defined as D3D12_RAYTRACING_SHADER_TABLE_BYTE_ALIGNMENT, and in the range [0...4096] bytes.
MissShaderTable
The shader table for miss shaders.
The stride is record stride, and must be aligned to 32 bytes, defined as D3D12_RAYTRACING_SHADER_RECORD_BYTE_ALIGNMENT, and in the range [0...4096] bytes. 0 is allowed.
The memory pointed to must be in state D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE.
The address must be aligned to 64 bytes, defined as D3D12_RAYTRACING_SHADER_TABLE_BYTE_ALIGNMENT.
HitGroupTable
The shader table for hit groups.
The stride is record stride, and must be aligned to 32 bytes, defined as D3D12_RAYTRACING_SHADER_RECORD_BYTE_ALIGNMENT, and in the range [0...4096] bytes. 0 is allowed.
The memory pointed to must be in state D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE.
The address must be aligned to 64 bytes, defined as D3D12_RAYTRACING_SHADER_TABLE_BYTE_ALIGNMENT.
CallableShaderTable
The shader table for callable shaders.
The stride is record stride, and must be aligned to 32 bytes, defined as D3D12_RAYTRACING_SHADER_RECORD_BYTE_ALIGNMENT. 0 is allowed.
The memory pointed to must be in state D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE.
The address must be aligned to 64 bytes, defined as D3D12_RAYTRACING_SHADER_TABLE_BYTE_ALIGNMENT.
Width
The width of the generation shader thread grid.
Height
The height of the generation shader thread grid.
Depth
The depth of the generation shader thread grid.
Requirements
Requirement | Value |
---|---|
Header | d3d12.h |