ID3D11ShaderReflection::GetThreadGroupSize method
Retrieves the sizes, in units of threads, of the X, Y, and Z dimensions of the shader's thread-group grid.
Syntax
UINT GetThreadGroupSize( [out, optional] UINT *pSizeX, [out, optional] UINT *pSizeY, [out, optional] UINT *pSizeZ );
Parameters
- pSizeX [out, optional]
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Type: UINT*
A pointer to the size, in threads, of the x-dimension of the thread-group grid. The maximum size is 1024.
- pSizeY [out, optional]
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Type: UINT*
A pointer to the size, in threads, of the y-dimension of the thread-group grid. The maximum size is 1024.
- pSizeZ [out, optional]
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Type: UINT*
A pointer to the size, in threads, of the z-dimension of the thread-group grid. The maximum size is 64.
Return value
Type: UINT
Returns the total size, in threads, of the thread-group grid by calculating the product of the size of each dimension.
*pSizeX * *pSizeY * *pSizeZ;
Remarks
This method's interface is hosted in the out-of-box DLL D3DCompiler_xx.dll.
When a compute shader is written it defines the actions of a single thread group only. If multiple thread groups are required, it is the role of the ID3D11DeviceContext::Dispatch call to issue multiple thread groups.
Requirements
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See also