ID3D11DeviceContext::Dispatch Method
Execute a command list from a thread group.
Syntax
void Dispatch(
[in] UINT ThreadGroupCountX,
[in] UINT ThreadGroupCountY,
[in] UINT ThreadGroupCountZ
);
Parameter
ThreadGroupCountX [in]
Typ: UINTThe number of groups dispatched in the x direction. ThreadGroupCountX must be less than D3D11_CS_DISPATCH_MAX_THREAD_GROUPS_PER_DIMENSION (65535).
ThreadGroupCountY [in]
Typ: UINTThe number of groups dispatched in the y direction. ThreadGroupCountY must be less than D3D11_CS_DISPATCH_MAX_THREAD_GROUPS_PER_DIMENSION (65535).
ThreadGroupCountZ [in]
Typ: UINTThe number of groups dispatched in the z direction. ThreadGroupCountZ must be less than D3D11_CS_DISPATCH_MAX_THREAD_GROUPS_PER_DIMENSION (65535). In feature level 10 the value for ThreadGroupCountZ must be 1.
Rückgabewert
Returns nothing.
Hinweise
You call the Dispatch method to execute commands in a compute shader. A compute shader can be run on many threads in parallel, within a thread group. Index a particular thread, within a thread group using a 3D vector given by (x,y,z).
In the following illustration, assume a thread group with 50 threads where the size of the group is given by (5,5,2). A single thread is identified from a thread group with 50 threads in it, using the vector (4,1,1).
The following illustration shows the relationship between the parameters passed to ID3D11DeviceContext::Dispatch, Dispatch(5,3,2), the values specified in the numthreads attribute, numthreads(10,8,3), and values that will passed to the compute shader for the thread-related system values (SV_GroupIndex,SV_DispatchThreadID,SV_GroupThreadID,SV_GroupID).
Anforderungen
Header |
D3D11.h |
Bibliothek |
D3D11.lib |