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> Use this file to discover all available pages before exploring further.

# D3D12_CONSERVATIVE_RASTERIZATION_TIER

> Identifies the tier level of conservative rasterization.

Identifies the tier level of conservative rasterization.

## Syntax

```cpp theme={null}
typedef enum D3D12_CONSERVATIVE_RASTERIZATION_TIER
{
    D3D12_CONSERVATIVE_RASTERIZATION_TIER_NOT_SUPPORTED = 0,
    D3D12_CONSERVATIVE_RASTERIZATION_TIER_1 = 1,
    D3D12_CONSERVATIVE_RASTERIZATION_TIER_2 = 2,
    D3D12_CONSERVATIVE_RASTERIZATION_TIER_3 = 3
} D3D12_CONSERVATIVE_RASTERIZATION_TIER
```

## Constants

| Constant                                                 | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| -------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| D3D12\_CONSERVATIVE\_RASTERIZATION\_TIER\_NOT\_SUPPORTED | Conservative rasterization is not supported.                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| D3D12\_CONSERVATIVE\_RASTERIZATION\_TIER\_1              | Tier 1 enforces a maximum 1/2 pixel uncertainty region and does not support post-snap degenerates. This is good for tiled rendering, a texture atlas, light map generation and sub-pixel shadow maps.                                                                                                                                                                                                                                                                             |
| D3D12\_CONSERVATIVE\_RASTERIZATION\_TIER\_2              | Tier 2 reduces the maximum uncertainty region to 1/256 and requires post-snap degenerates not be culled. This tier is helpful for CPU-based algorithm acceleration (such as voxelization).                                                                                                                                                                                                                                                                                        |
| D3D12\_CONSERVATIVE\_RASTERIZATION\_TIER\_3              | Tier 3 maintains a maximum 1/256 uncertainty region and adds support for inner input coverage. Inner input coverage adds the new value <code>SV\_InnerCoverage</code> to High Level Shading Language (HLSL). This is a 32-bit scalar integer that can be specified on input to a pixel shader, and represents the underestimated conservative rasterization information (that is, whether a pixel is guaranteed-to-be-fully covered). This tier is helpful for occlusion culling. |

## Remarks

This enum is used by the [D3D12\_FEATURE\_DATA\_D3D12\_OPTIONS](/reference/graphics/d3d12/structs/d3d12_feature_data_d3d12_options_public) structure.

## 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

[Conservative Rasterization](https://learn.microsoft.com/en-us/windows/desktop/direct3d12/conservative-rasterization)

[Core Enumerations](https://learn.microsoft.com/en-us/windows/desktop/direct3d12/direct3d-12-enumerations)

[D3D12\_CONSERVATIVE\_RASTERIZATION\_MODE](/reference/graphics/d3d12/enums/d3d12_conservative_rasterization_mode_public)


## Related topics

- [D3D12_CONSERVATIVE_RASTERIZATION_MODE](/reference/graphics/d3d12/enums/d3d12_conservative_rasterization_mode_public.md)
- [D3D12_FEATURE_DATA_D3D12_OPTIONS](/reference/graphics/d3d12/structs/d3d12_feature_data_d3d12_options_public.md)
- [D3D12_VIEW_INSTANCING_TIER](/reference/graphics/d3d12/enums/d3d12_view_instancing_tier_public.md)
- [D3D12_RAYTRACING_TIER](/reference/graphics/d3d12/enums/d3d12_raytracing_tier_public.md)
- [D3D12_RESOURCE_BINDING_TIER](/reference/graphics/d3d12/enums/d3d12_resource_binding_tier_public.md)