luchu1993
9943959e76
Allow model instance material APIs to fall back to asset material slots when instance entries have not been initialized yet. Lazily initialize entries before writing material overrides so imported prefab StaticModel instances can call GetMaterial and SetMaterial without assertion failures.\n\nFixes #3801.
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
// Copyright (c) Wojciech Figat. All rights reserved.
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#include "ModelInstanceActor.h"
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#include "Engine/Content/Assets/MaterialInstance.h"
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#include "Engine/Level/Scene/SceneRendering.h"
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ModelInstanceActor::ModelInstanceActor(const SpawnParams& params)
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: Actor(params)
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{
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}
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String ModelInstanceActor::MeshReference::ToString() const
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{
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return String::Format(TEXT("Actor={},LOD={},Mesh={}"), Actor ? Actor->GetNamePath() : String::Empty, LODIndex, MeshIndex);
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}
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MeshBase* ModelInstanceActor::MeshReference::Get() const
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{
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auto actor = Actor.Get();
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return actor ? actor->GetMesh(*this) : nullptr;
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}
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void ModelInstanceActor::SetEntries(const Array<ModelInstanceEntry>& value)
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{
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WaitForModelLoad();
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bool anyChanged = false;
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Entries.Resize(value.Count());
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for (int32 i = 0; i < value.Count(); i++)
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{
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anyChanged |= Entries[i] != value[i];
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Entries[i] = value[i];
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}
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if (anyChanged && _sceneRenderingKey != -1)
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GetSceneRendering()->UpdateActor(this, _sceneRenderingKey, ISceneRenderingListener::Visual);
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}
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void ModelInstanceActor::SetMaterial(int32 entryIndex, MaterialBase* material)
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{
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WaitForModelLoad();
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if (Entries.Count() == 0 && !material)
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return;
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const int32 slotsCount = GetMaterialSlots().Length();
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if (Entries.Count() != slotsCount)
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Entries.Setup(slotsCount);
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CHECK(entryIndex >= 0 && entryIndex < Entries.Count());
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if (Entries[entryIndex].Material == material)
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return;
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Entries[entryIndex].Material = material;
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if (_sceneRenderingKey != -1)
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GetSceneRendering()->UpdateActor(this, _sceneRenderingKey, ISceneRenderingListener::Visual);
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}
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MaterialInstance* ModelInstanceActor::CreateAndSetVirtualMaterialInstance(int32 entryIndex)
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{
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WaitForModelLoad();
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const int32 slotsCount = GetMaterialSlots().Length();
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CHECK_RETURN(entryIndex >= 0 && entryIndex < slotsCount, nullptr);
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if (Entries.Count() != slotsCount)
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Entries.Setup(slotsCount);
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MaterialBase* material = GetMaterial(entryIndex);
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CHECK_RETURN(material && !material->WaitForLoaded(), nullptr);
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MaterialInstance* result = material->CreateVirtualInstance();
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Entries[entryIndex].Material = result;
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if (_sceneRenderingKey != -1)
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GetSceneRendering()->UpdateActor(this, _sceneRenderingKey, ISceneRenderingListener::Visual);
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return result;
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}
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void ModelInstanceActor::WaitForModelLoad()
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{
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}
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void ModelInstanceActor::OnLayerChanged()
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{
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if (_sceneRenderingKey != -1)
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GetSceneRendering()->UpdateActor(this, _sceneRenderingKey, ISceneRenderingListener::Layer);
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}
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void ModelInstanceActor::OnStaticFlagsChanged()
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{
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if (_sceneRenderingKey != -1)
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GetSceneRendering()->UpdateActor(this, _sceneRenderingKey, ISceneRenderingListener::StaticFlags);
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}
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void ModelInstanceActor::OnTransformChanged()
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{
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// Base
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Actor::OnTransformChanged();
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UpdateBounds();
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}
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void ModelInstanceActor::OnEnable()
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{
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GetSceneRendering()->AddActor(this, _sceneRenderingKey);
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// Base
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Actor::OnEnable();
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}
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void ModelInstanceActor::OnDisable()
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{
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// Base
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Actor::OnDisable();
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GetSceneRendering()->RemoveActor(this, _sceneRenderingKey);
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}
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