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D3D12DDI_SHADING_RATE_COMBINER_0062 enumeration (d3d12umddi.h)

  • Article

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