Saturate (HLSL reference)
Clamps the result of a single or double precision floating point arithmetic operation to [0.0f...1.0f] range.
| _sat |
|---|
The saturate instruction result modifier performs the following operation on the result values(s) from a floating point arithmetic operation that has _sat applied to it:
min(1.0f, max(0.0f, value))
where min() and max() in the above expression behave in the way min, max, dmin, or dmax operate.
_sat(NaN) returns 0, by the rules for min and max.
Minimum Shader Model
This modifier 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 |
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