ishr (sm4 - asm)
Arithmetic shift right (sign extending).
| ishr dest[.mask], src0[.swizzle], src1.select_component |
|---|
| Item | Description |
|---|---|
| dest |
[in] Contains the result of the operation. |
| src0 |
[in] Contains the value to be shifted. |
| src1 |
[in] Contains the shift amount. |
Remarks
This instruction performs a component-wise arithmetic shift of each 32-bit value in src0 right by an unsigned integer bit count provided by the LSB 5 bits (0-31 range) in src1.select_component, replicating the value of bit 31. The 32-bit per component result is placed in dest. The count is a scalar value applied to all components.
This instruction applies to the following shader stages:
| Vertex Shader | Geometry Shader | Pixel Shader |
|---|---|---|
| x | x | x |
Minimum Shader Model
This function is supported in the following shader models.
| Shader Model | Supported |
|---|---|
| Shader Model 5 | yes |
| Shader Model 4.1 | yes |
| Shader Model 4 | yes |
| Shader Model 3 (DirectX HLSL) | no |
| Shader Model 2 (DirectX HLSL) | no |
| Shader Model 1 (DirectX HLSL) | no |