AddDeformSimHairStrandsPass

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API > API/Plugins > API/Plugins/HairStrandsCore

Description

Reset the interpolation data. This needs to be called prior to ComputeHairStrandsInterpolation and prior to the actual hair simulation in order to insure that: 1) when hair simulation is enabled, the first frame is correct 2) when hair simulation is enabled/disabled (i.e., toggle/change) we reset to deform buffer to rest state)

void AddDeformSimHairStrandsPass  
(  
    FRDGBuilder & GraphBuilder,  
    FGlobalShaderMap * ShaderMap,  
    const uint32 InstanceRegisteredIndex,  
    const uint32 MeshLODIndex,  
    const uint32 VertexCount,  
    FHairStrandsRestRootResource * SimRestRootResources,  
    FHairStrandsDeformedRootResource * SimDeformedRootResources,  
    FRDGBufferSRVRef SimRestPosePositionBuffer,  
    FRDGBufferSRVRef SimPointToCurveBuffer,  
    FRDGImportedBuffer & OutSimDeformedPositionBuffer,  
    const FVector & SimRestOffset,  
    FRDGBufferSRVRef SimDeformedOffsetBuffer,  
    const bool bHasGlobalInterpolation,  
    FRHIShaderResourceView * BoneBufferSRV  
)  
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