ProcessQuadTessFactorsAvg function

Generates the corrected tessellation factors for a quad patch.

Syntax

void ProcessQuadTessFactorsAvg(
  in  float4 RawEdgeFactors,
  in  float InsideScale,
  out float4 RoundedEdgeTessFactors,
  out float2 RoundedInsideTessFactors,
  out float2 UnroundedInsideTessFactors
);

Parameters

RawEdgeFactors [in]

Type: float4

The edge tessellation factors, passed into the tessellator stage.

InsideScale [in]

Type: float

The scale factor applied to the UV tessellation factors computed by the tessellation stage. The allowable range for InsideScale is 0.0 to 1.0.

RoundedEdgeTessFactors [out]

Type: float4

The rounded edge-tessellation factors calculated by the tessellator stage.

RoundedInsideTessFactors [out]

Type: float2

The rounded tessellation factors calculated by the tessellator stage for inside edges.

UnroundedInsideTessFactors [out]

Type: float2

The tessellation factors calculated by the tessellator stage for inside edges.

Return value

This function does not return a value.

Remarks

Generates the corrected tessellation factors for a quad patch, computing the inside tessellation factors as the average of the edge tessellation factors. The inside tess factors will be identical values determined by the average of all four edges scaled by InsideScale. The result is then rounded based on the partitioning mode, but the unrounded results are available using the UnroundedInsideTessFactors parameter.

Minimum Shader Model

This function is supported in the following shader models.

Shader ModelSupported
Shader Model 5 and higher shader modelsyes

 

This function is supported in the following types of shaders:

VertexHullDomainGeometryPixelCompute
x

 

See also

Intrinsic Functions
Shader Model 5

 

 

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