| Issue |
184477
|
| Summary |
[Matrix] Implement matrix support for the `clip` HLSL Function
|
| Labels |
HLSL,
bot:HLSL
|
| Assignees |
|
| Reporter |
kmpeng
|
> Note: This issue tracks matrix support for `clip`. The original implementation issue is [here](https://github.com/llvm/llvm-project/issues/99093).
Matrix requirements:
- [ ] https://github.com/llvm/wg-hlsl/issues/387
## HLSL:
Discards the current pixel if the specified value is less than zero.
| clip(*x*) |
|-----------|
## Parameters
| Item | Description |
|--------------------------------------------------------|----------------------------------------|
| <span id="x"></span><span id="X"></span>*x*<br/> | \[in\] The specified value.<br/> |
## Return Value
None.
## Remarks
Use the **clip** HLSL intrinsic function to simulate clipping planes if each component of the *x* parameter represents the distance from a plane.
Also, use the **clip** function to test for alpha behavior, as shown in the following example:
```
clip( Input.Color.A < 0.1f ? -1:1 );
```
## Type Description
| Name | [**Template Type**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-intrinsic-functions.md) | [**Component Type**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-intrinsic-functions.md) | Size |
|------|----------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------|------|
| *x* | [**scalar**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-intrinsic-functions.md), **vector**, or **matrix** | [**float**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/WinProg/windows-data-types.md) | any |
## Minimum Shader Model
This function is supported in the following shader models.
| Shader Model | Supported |
|-----------------------------------------------------------|-------------------------|
| [Shader Model 4](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-sm4.md) | yes (pixel shader only) |
| [Shader Model 3 (DirectX HLSL)](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-sm3.md) | yes (pixel shader only) |
| [Shader Model 2 (DirectX HLSL)](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-sm2.md) | yes (pixel shader only) |
| [Shader Model 1 (DirectX HLSL)](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-sm1.md) | yes (pixel shader only) |
## See also
<dl> <dt>
[**Intrinsic Functions (DirectX HLSL)**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src//direct3dhlsl/dx-graphics-hlsl-intrinsic-functions.md)
</dt> </dl>
![]()
_______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
