// d3d12umddi.h

typedef enum D3D12DDI_SHADING_RATE_0062 {
  D3D12DDI_SHADING_RATE_0062_1X1,
  D3D12DDI_SHADING_RATE_0062_1X2,
  D3D12DDI_SHADING_RATE_0062_2X1,
  D3D12DDI_SHADING_RATE_0062_2X2,
  D3D12DDI_SHADING_RATE_0062_2X4,
  D3D12DDI_SHADING_RATE_0062_4X2,
  D3D12DDI_SHADING_RATE_0062_4X4
} ;
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Windows Driver Kit DDI reference (ne-d3d12umddi-d3d12ddi_shading_rate_0062)

D3D12DDI_SHADING_RATE_0062 enumeration

Description

The shading rate at which the variable rate shading occurs.

Constants

`D3D12DDI_SHADING_RATE_0062_1X1`

No change to the shading rate.

`D3D12DDI_SHADING_RATE_0062_1X2`

Reduces vertical resolution 2x.

`D3D12DDI_SHADING_RATE_0062_2X1`

Reduces horizontal resolution 2x.

`D3D12DDI_SHADING_RATE_0062_2X2`

Reduces both axes by 2x.

`D3D12DDI_SHADING_RATE_0062_2X4`

Reduce horizontal res 2x, vertical by 4x.

`D3D12DDI_SHADING_RATE_0062_4X2`

Reduce horizontal res 4x, vertical by 2x.

`D3D12DDI_SHADING_RATE_0062_4X4`

Reduces both axes by 4x.

Remarks

The values are organized so that shading rates are easily decomposable into two axes, where each axis’s values are compactly represented in logarithmic space.

D3D12DDI_SHADING_RATE_0062 - NtDoc