ishr (sm5 - asm)

Arithmetic shift right (sign extending).

ishr dest[.mask], src0[.swizzle], src1[.swizzle]
Item Description
dest
[in] Contains the results of the shift.
src0
[in] The number of bits to shift.
src1
[in] The 32-bit values to shift.

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, replicating the value of bit 31. The 32-bit per component result is placed in dest.

This instruction applies to the following shader stages:

Vertex Hull Domain Geometry Pixel Compute
X X X X X 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

Shader Model 5 Assembly (DirectX HLSL)