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# D3D12_VARIABLE_SHADING_RATE_TIER

> Defines constants that specify a shading rate tier (for variable-rate shading, or VRS).

Defines constants that specify a shading rate tier (for variable-rate shading, or VRS). For more info, see [Variable-rate shading (VRS)](https://learn.microsoft.com/en-us/windows/desktop/direct3d12/vrs).

## Syntax

```cpp theme={null}
typedef enum D3D12_VARIABLE_SHADING_RATE_TIER
{
    D3D12_VARIABLE_SHADING_RATE_TIER_NOT_SUPPORTED = 0,
    D3D12_VARIABLE_SHADING_RATE_TIER_1 = 1,
    D3D12_VARIABLE_SHADING_RATE_TIER_2 = 2
} D3D12_VARIABLE_SHADING_RATE_TIER
```

## Constants

| Constant                                             | Description                                               |
| ---------------------------------------------------- | --------------------------------------------------------- |
| D3D12\_VARIABLE\_SHADING\_RATE\_TIER\_NOT\_SUPPORTED | Specifies that variable-rate shading is not supported.    |
| D3D12\_VARIABLE\_SHADING\_RATE\_TIER\_1              | Specifies that variable-rate shading tier 1 is supported. |
| D3D12\_VARIABLE\_SHADING\_RATE\_TIER\_2              | Specifies that variable-rate shading tier 2 is supported. |

## Remarks

## Requirements

**Header:** d3d12\_xs.h or d3d12\_x.h\
**Library:** d3d12\_xs.lib or d3d12\_x.lib\
**Supported Platforms**: XBOX Series consoles and XBOX One family

## See Also

[Variable-rate shading (VRS)](https://learn.microsoft.com/en-us/windows/desktop/direct3d12/vrs)


## Related topics

- [RSSetShadingRateImage (XBOX Series consoles)](/reference/graphics/d3d12/interfaces/id3d12graphicscommandlist5/methods/id3d12graphicscommandlist5_rssetshadingrateimage_public.md)
- [D3D12_FEATURE_DATA_D3D12_OPTIONS6](/reference/graphics/d3d12/structs/d3d12_feature_data_d3d12_options6_public.md)
- [RSSetShadingRate (XBOX Series consoles)](/reference/graphics/d3d12/interfaces/id3d12graphicscommandlist5/methods/id3d12graphicscommandlist5_rssetshadingrate_public.md)
- [D3D12_SHADING_RATE_COMBINER](/reference/graphics/d3d12/enums/d3d12_shading_rate_combiner_public.md)
- [D3D12_SHADING_RATE (XBOX Series consoles)](/reference/graphics/d3d12/enums/d3d12_shading_rate_public.md)