D3D12DDI_SHADING_RATE_COMBINER_0062 enumeration (d3d12umddi.h)

Indicates the type of combiner used to combine two shading rates A and B, where A is the pipeline/render state (per draw) shading rate, and B is one of the following types of shading rates:

• a provoking vertex shading rate (from a vertex shader)
• a per primitive shading rate (from a geometry shader)
• an image based shading rate

Syntax

typedef enum D3D12DDI_SHADING_RATE_COMBINER_0062 {
  D3D12DDI_SHADING_RATE_COMBINER_0062_PASSTHROUGH,
  D3D12DDI_SHADING_RATE_COMBINER_0062_OVERRIDE,
  D3D12DDI_SHADING_RATE_COMBINER_0062_MIN,
  D3D12DDI_SHADING_RATE_COMBINER_0062_MAX,
  D3D12DDI_SHADING_RATE_COMBINER_0062_SUM
} ;

Constants

D3D12DDI_SHADING_RATE_COMBINER_0062_PASSTHROUGH The default combiner, where the result is A. The pipeline/render state (per draw) shading rate is used.
D3D12DDI_SHADING_RATE_COMBINER_0062_OVERRIDE The shading rate of type B is used as the shading rate.
D3D12DDI_SHADING_RATE_COMBINER_0062_MIN The combined shading rate is the minimum of A and B. This shading rate is the higher quality.
D3D12DDI_SHADING_RATE_COMBINER_0062_MAX The combined shading rate is the maximum of A and B. This shading rate is the lower quality.
D3D12DDI_SHADING_RATE_COMBINER_0062_SUM Apply the cost of B relative to A. The combined rate is equal to min(maxRate, A.xy + B.xy), where maxRate is the largest permitted dimension of coarse pixel on the device.

Remarks

When specifying a shader rate by vertex attribute:

• If a geometry shader is used, the shading rate can be specified through the vertex attribute.

• If a geometry shader is not used, the shading rate is specified by the provoking vertex.

Requirements

Requirement	Value
Minimum supported client	Windows 10, version 1903
Header	d3d12umddi.h