EM_Task/UnrealEd/Private/ThumbnailRendering/SkeletalMeshThumbnailRenderer.cpp

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2026-02-13 16:18:33 +08:00
// Copyright Epic Games, Inc. All Rights Reserved.
#include "ThumbnailRendering/SkeletalMeshThumbnailRenderer.h"
#include "Misc/App.h"
#include "ShowFlags.h"
#include "SceneView.h"
#include "Engine/SkeletalMesh.h"
#include "ThumbnailHelpers.h"
USkeletalMeshThumbnailRenderer::USkeletalMeshThumbnailRenderer(const FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{
ThumbnailScene = nullptr;
}
void USkeletalMeshThumbnailRenderer::Draw(UObject* Object, int32 X, int32 Y, uint32 Width, uint32 Height, FRenderTarget* RenderTarget, FCanvas* Canvas, bool bAdditionalViewFamily)
{
USkeletalMesh* SkeletalMesh = Cast<USkeletalMesh>(Object);
if (SkeletalMesh != nullptr)
{
if (ThumbnailScene == nullptr)
{
ThumbnailScene = new FSkeletalMeshThumbnailScene();
}
ThumbnailScene->SetSkeletalMesh(SkeletalMesh);
AddAdditionalPreviewSceneContent(Object, ThumbnailScene->GetWorld());
FSceneViewFamilyContext ViewFamily(FSceneViewFamily::ConstructionValues(RenderTarget, ThumbnailScene->GetScene(), FEngineShowFlags(ESFIM_Game))
.SetWorldTimes(FApp::GetCurrentTime() - GStartTime, FApp::GetDeltaTime(), FApp::GetCurrentTime() - GStartTime)
.SetAdditionalViewFamily(bAdditionalViewFamily));
ViewFamily.EngineShowFlags.DisableAdvancedFeatures();
ViewFamily.EngineShowFlags.MotionBlur = 0;
ViewFamily.EngineShowFlags.LOD = 0;
ThumbnailScene->GetView(&ViewFamily, X, Y, Width, Height);
RenderViewFamily(Canvas, &ViewFamily);
ThumbnailScene->SetSkeletalMesh(nullptr);
}
}
void USkeletalMeshThumbnailRenderer::BeginDestroy()
{
if (ThumbnailScene != nullptr)
{
delete ThumbnailScene;
ThumbnailScene = nullptr;
}
Super::BeginDestroy();
}