71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
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// Copyright 2020 Phyronnaz
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#include "VoxelSpawners/VoxelSpawnerActor.h"
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#include "VoxelComponents/VoxelPhysicsRelevancyComponent.h"
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#include "Components/StaticMeshComponent.h"
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#include "Engine/StaticMesh.h"
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#include "RenderingThread.h"
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#include "Materials/MaterialInstance.h"
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#include "Materials/MaterialInstanceDynamic.h"
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#include "Engine/Private/Materials/MaterialInstanceSupport.h"
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AVoxelMeshSpawnerActor::AVoxelMeshSpawnerActor()
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{
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RootComponent = StaticMeshComponent = CreateDefaultSubobject<UStaticMeshComponent>("Static Mesh Component");
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}
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void AVoxelMeshSpawnerActor::SetStaticMesh_Implementation(UStaticMesh* Mesh, const TMap<int32, UMaterialInterface*>& SectionsMaterials, const FBodyInstance& CollisionPresets)
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{
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StaticMeshComponent->BodyInstance = CollisionPresets;
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StaticMeshComponent->BodyInstance.bSimulatePhysics = true;
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StaticMeshComponent->SetStaticMesh(Mesh);
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for (auto& It : SectionsMaterials)
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{
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StaticMeshComponent->SetMaterial(It.Key, It.Value);
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}
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}
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template <typename ParameterType>
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void GameThread_UpdateMIParameter(const UMaterialInstance* Instance, const ParameterType& Parameter)
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{
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FMaterialInstanceResource* Resource = Instance->Resource;
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const FMaterialParameterInfo& ParameterInfo = Parameter.ParameterInfo;
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typename ParameterType::ValueType Value = ParameterType::GetValue(Parameter);
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ENQUEUE_RENDER_COMMAND(SetMIParameterValue)(
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[Resource, ParameterInfo, Value](FRHICommandListImmediate& RHICmdList)
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{
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Resource->RenderThread_UpdateParameter(ParameterInfo, Value);
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Resource->CacheUniformExpressions(false);
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});
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}
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void AVoxelMeshSpawnerActor::SetInstanceRandom_Implementation(float Value)
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{
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for (int32 Index = 0; Index < StaticMeshComponent->GetNumMaterials(); Index++)
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{
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if (auto* Material = StaticMeshComponent->GetMaterial(Index))
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{
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UMaterialInstanceDynamic* DynamicMaterial = UMaterialInstanceDynamic::Create(Material, StaticMeshComponent);
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if (DynamicMaterial)
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{
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// Do it manually, as for some values it's not updated
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DynamicMaterial->SetScalarParameterValue("PerInstanceRandom", PI);
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FScalarParameterValue* ParameterValue = GameThread_FindParameterByName(DynamicMaterial->ScalarParameterValues, FMaterialParameterInfo("PerInstanceRandom"));
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if (ensure(ParameterValue))
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{
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ParameterValue->ParameterValue = Value;
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// Update the material instance data in the rendering thread.
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GameThread_UpdateMIParameter(DynamicMaterial, *ParameterValue);
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DynamicMaterial->RecacheUniformExpressions(false);
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}
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StaticMeshComponent->SetMaterial(Index, DynamicMaterial);
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}
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}
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}
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}
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AVoxelMeshWithPhysicsRelevancySpawnerActor::AVoxelMeshWithPhysicsRelevancySpawnerActor()
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{
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PhysicsRelevancyComponent = CreateDefaultSubobject<UVoxelPhysicsRelevancyComponent>("Voxel Physics Relevancy Component");
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}
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