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37 lines
1.6 KiB
C++
37 lines
1.6 KiB
C++
// Copyright UShaderLab. All Rights Reserved.
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//
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// Per-instance intrinsics.
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#include "ShaderLabIntrinsics.h"
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#include "Materials/MaterialExpressionPerInstanceCustomData.h"
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#include "Materials/MaterialExpressionPerInstanceFadeAmount.h"
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#include "Materials/MaterialExpressionPerInstanceRandom.h"
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void RegisterInstancingIntrinsics(FShaderLabIntrinsicRegistry& Registry)
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{
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using namespace ShaderLabIntrinsic_Private;
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using EFreq = EShaderLabIntrinsicFrequency;
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AddSimple(Registry, TEXT("PerInstanceRandom"), EFreq::Any, TEXT("float"), [](UMaterial& M) { return MakeSimple<UMaterialExpressionPerInstanceRandom>(M); });
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AddSimple(Registry, TEXT("PerInstanceFadeAmount"), EFreq::Any, TEXT("float"), [](UMaterial& M) { return MakeSimple<UMaterialExpressionPerInstanceFadeAmount>(M); });
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// PerInstanceCustomData(DataIndex[, ConstDefaultValue]) — const args + optional input pin at default.
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{
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FShaderLabIntrinsicDesc Desc;
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Desc.Name = FName(TEXT("PerInstanceCustomData"));
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Desc.ReturnType = TEXT("float");
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Desc.Params = { { TEXT("int"), TEXT("DataIndex"), TEXT("") },
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{ TEXT("float"), TEXT("ConstDefaultValue"), TEXT("0") } };
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Desc.MakeNode = [](UMaterial& M, const TArray<FString>& Args, FString&) -> UMaterialExpression*
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{
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UMaterialExpressionPerInstanceCustomData* E = NewObject<UMaterialExpressionPerInstanceCustomData>(&M);
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if (Args.Num() >= 1) { E->DataIndex = static_cast<uint32>(FCString::Atoi(*Args[0])); }
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if (Args.Num() >= 2) { E->ConstDefaultValue = FCString::Atof(*Args[1]); }
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M.GetExpressionCollection().AddExpression(E);
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return E;
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};
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Registry.Register(MoveTemp(Desc));
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}
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}
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