Implement the ProcessQuadTessFactorsAvg
HLSL Function
#99145
Labels
backend:DirectX
bot:HLSL
HLSL
HLSL Language Support
metabug
Issue to collect references to a group of similar or related issues.
ProcessQuadTessFactorsAvg
clang builtin,ProcessQuadTessFactorsAvg
clang builtin withhlsl_intrinsics.h
ProcessQuadTessFactorsAvg
toCheckHLSLBuiltinFunctionCall
inSemaChecking.cpp
ProcessQuadTessFactorsAvg
toEmitHLSLBuiltinExpr
inCGBuiltin.cpp
clang/test/CodeGenHLSL/builtins/ProcessQuadTessFactorsAvg.hlsl
clang/test/SemaHLSL/BuiltIns/ProcessQuadTessFactorsAvg-errors.hlsl
int_dx_ProcessQuadTessFactorsAvg
intrinsic inIntrinsicsDirectX.td
DXILOpMapping
ofint_dx_ProcessQuadTessFactorsAvg
to106
inDXIL.td
ProcessQuadTessFactorsAvg.ll
andProcessQuadTessFactorsAvg_errors.ll
tests inllvm/test/CodeGen/DirectX/
DirectX
SPIR-V
There is no support for
ProcessQuadTessFactorsAvg
when targeting SPIR-V.Test Case(s)
Example 1
HLSL:
Generates the corrected tessellation factors for a quad patch.
Syntax
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.
This function is supported in the following types of shaders:
See also
Intrinsic Functions
Shader Model 5
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