| Issue |
184511
|
| Summary |
[Matrix] Implement matrix support for the `max` HLSL Function
|
| Labels |
HLSL,
bot:HLSL
|
| Assignees |
|
| Reporter |
kmpeng
|
Matrix requirements:
- [ ] https://github.com/llvm/wg-hlsl/issues/387
## HLSL:
Selects the greater of x and y.
## Parameters
| Item | Description |
|--------------------------------------------------------|--------------------------------------|
| <span id="x"></span><span id="X"></span>*x*<br/> | \[in\] The x input value.<br/> |
| <span id="y"></span><span id="Y"></span>*y*<br/> | \[in\] The y input value.<br/> |
## Return Value
The *x* or *y* parameter, whichever is the largest value.
## Remarks
Denormals are handled as follows:
| src0 src1-> | -inf | F | +inf | NAN |
|-------------|------|---------------|------|------|
| -inf | -inf | src1 | +inf | -inf |
| F | src0 | src0 or src1 | +inf | src0 |
| +inf | +inf | +inf | +inf | +inf |
| NaN | -inf | src1 | +inf | NaN |
F means finite-real number.
## Type Description
| Name | In/Out | [**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 | in | [**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), [**int**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/WinProg/windows-data-types.md) | any |
| y | in | same as input x | [**float**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/WinProg/windows-data-types.md), [**int**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/WinProg/windows-data-types.md) | same dimension(s) as input x |
| ret | return type | same as input x | [**float**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/WinProg/windows-data-types.md), [**int**](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/WinProg/windows-data-types.md) | same dimension(s) as input x |
## Minimum Shader Model
This function is supported in the following shader models.
| Shader Model | Supported |
|------------------------------------------------------------------------------------|-----------------------------|
| [Shader Model 2 (DirectX HLSL)](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/direct3dhlsl/dx-graphics-hlsl-sm2.md) and higher shader models | yes |
| [Shader Model 1 (DirectX HLSL)](https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/direct3dhlsl/dx-graphics-hlsl-sm1.md) | yes (vs\_1\_1 and ps\_1\_4) |
## 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>
[**DirectX Functional Specification**](https://microsoft.github.io/DirectX-Specs/d3d/archive/D3D11_3_FunctionalSpec.htm#inst_MAX)
</dt> </dl>
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