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Floating point to unsigned integer conversion.
| ftou dest[.mask], [-]src0[_abs][.swizzle] |
|---|
| ftoi dest[.mask], [-]src0[_abs][.swizzle] |
|---|
| Item | Description |
|---|---|
| dest |
[in] The address of the result of the operation. |
| src0 |
[in] The value to convert. |
Remarks
The conversion is performed per-component. Rounding is always performed towards zero, following the C convention for casts from float to int.
Applications that require different rounding semantics can invoke the round instructions before casting to integer.
Inputs are clamped to the range [0.0f ... 4294967295.999f] prior to conversion, and input NaN values produce a zero result.
Optional negate and absolute value modifiers are applied to the source values before conversion.
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 |