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Declare compute shader input IDs.
| dcl_input vThread |
|---|
| Item | Description |
|---|---|
| vThread |
[in] The 3-component unsigned 32-bit integer ID value. One of:
|
dcl_input is an existing declaration in other shader stages. It is used in the compute shader to declare the various 3-component unsigned 32-bit integer ID values unique to the compute shader. They are:
- vThreadID.xyz
- vGroupID.xyz
- vThreadIDInGroup.xyz
- vThreadIDInGroupFlattened (single component)
This instruction applies to the following shader stages:
| Vertex | Hull | Domain | Geometry | Pixel | Compute |
|---|---|---|---|---|---|
| X |
Minimum Shader Model
This instruction is supported in the following shader models:
| Shader Model | Supported |
|---|---|
| Shader Model 5 | yes |
| Shader Model 4.1 | no |
| Shader Model 4 | no |
| Shader Model 3 (DirectX HLSL) | no |
| Shader Model 2 (DirectX HLSL) | no |
| Shader Model 1 (DirectX HLSL) | no |