ID3D11ShaderReflection::GetThreadGroupSize method (d3d11shader.h)
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
[out, optional] pSizeX
Type: UINT*
A pointer to the size, in threads, of the x-dimension of the thread-group grid. The maximum size is 1024.
[out, optional] pSizeY
Type: UINT*
A pointer to the size, in threads, of the y-dimension of the thread-group grid. The maximum size is 1024.
[out, optional] pSizeZ
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
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | d3d11shader.h |
| Library | D3DCompiler.lib |
| DLL | D3DCompiler_47.dll |