You've already forked UnrealEngineUWP
mirror of
https://github.com/izzy2lost/UnrealEngineUWP.git
synced 2026-03-26 18:15:20 -07:00
117472780d
#jira #preflight 634ee62fe746026e48eb077e [CL 22621687 by bryan sefcik in ue5-main branch]
110 lines
4.1 KiB
C++
110 lines
4.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
|
|
|
|
#include "AssetUtils/MeshDescriptionUtil.h"
|
|
|
|
#include "Components/StaticMeshComponent.h"
|
|
#include "Engine/StaticMesh.h"
|
|
#include "StaticMeshAttributes.h"
|
|
#include "StaticMeshOperations.h"
|
|
|
|
|
|
|
|
|
|
void UE::MeshDescription::InitializeAutoGeneratedAttributes(FMeshDescription& Mesh, const FMeshBuildSettings* BuildSettings)
|
|
{
|
|
check(BuildSettings);
|
|
|
|
// if the build settings don't indicate calculated normals/tangents, we will assume they are good
|
|
if (BuildSettings->bRecomputeNormals || BuildSettings->bRecomputeTangents)
|
|
{
|
|
// check if any are invalid
|
|
bool bHasInvalidNormals, bHasInvalidTangents;
|
|
FStaticMeshOperations::AreNormalsAndTangentsValid(Mesh, bHasInvalidNormals, bHasInvalidTangents);
|
|
|
|
// if neither are invalid we are not going to recompute
|
|
if (bHasInvalidNormals || bHasInvalidTangents)
|
|
{
|
|
FStaticMeshAttributes Attributes(Mesh);
|
|
if (!Attributes.GetTriangleNormals().IsValid() || !Attributes.GetTriangleTangents().IsValid())
|
|
{
|
|
// If these attributes don't exist, create them and compute their values for each triangle
|
|
FStaticMeshOperations::ComputeTriangleTangentsAndNormals(Mesh);
|
|
}
|
|
|
|
EComputeNTBsFlags ComputeNTBsOptions = EComputeNTBsFlags::BlendOverlappingNormals;
|
|
ComputeNTBsOptions |= BuildSettings->bRecomputeNormals ? EComputeNTBsFlags::Normals : EComputeNTBsFlags::None;
|
|
ComputeNTBsOptions |= BuildSettings->bRecomputeTangents ? EComputeNTBsFlags::Tangents : EComputeNTBsFlags::None;
|
|
ComputeNTBsOptions |= BuildSettings->bUseMikkTSpace ? EComputeNTBsFlags::UseMikkTSpace : EComputeNTBsFlags::None;
|
|
ComputeNTBsOptions |= BuildSettings->bComputeWeightedNormals ? EComputeNTBsFlags::WeightedNTBs : EComputeNTBsFlags::None;
|
|
ComputeNTBsOptions |= BuildSettings->bRemoveDegenerates ? EComputeNTBsFlags::IgnoreDegenerateTriangles : EComputeNTBsFlags::None;
|
|
|
|
FStaticMeshOperations::ComputeTangentsAndNormals(Mesh, ComputeNTBsOptions);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void UE::MeshDescription::InitializeAutoGeneratedAttributes(FMeshDescription& Mesh, UStaticMesh* StaticMesh, int32 SourceLOD)
|
|
{
|
|
#if WITH_EDITOR
|
|
if (ensureMsgf(SourceLOD < StaticMesh->GetNumSourceModels(), TEXT("InitializeMeshDescription requested LOD index greater than num available in UStaticMesh")))
|
|
{
|
|
const FStaticMeshSourceModel& SourceModel = StaticMesh->GetSourceModel(SourceLOD);
|
|
InitializeAutoGeneratedAttributes(Mesh, &SourceModel.BuildSettings);
|
|
}
|
|
#else
|
|
ensureMsgf(false, TEXT("InitializeMeshDescription requires Editor-only SourceModel field of UStaticMesh"));
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
void UE::MeshDescription::InitializeAutoGeneratedAttributes(FMeshDescription& Mesh, UActorComponent* StaticMeshComponent, int32 SourceLOD)
|
|
{
|
|
#if WITH_EDITOR
|
|
if (Cast<UStaticMeshComponent>(StaticMeshComponent) != nullptr)
|
|
{
|
|
UStaticMesh* StaticMesh = Cast<UStaticMeshComponent>(StaticMeshComponent)->GetStaticMesh();
|
|
if (ensure(StaticMesh != nullptr))
|
|
{
|
|
InitializeAutoGeneratedAttributes(Mesh, StaticMesh, SourceLOD);
|
|
}
|
|
}
|
|
#else
|
|
//ensureMsgf(false, TEXT("InitializeMeshDescription requires Editor-only SourceModel field of UStaticMesh"));
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
void UE::MeshDescription::ConfigureBuildSettings(UStaticMesh* StaticMesh, int32 SourceLOD, FStaticMeshBuildSettingChange NewSettings)
|
|
{
|
|
#if WITH_EDITOR
|
|
if (ensureMsgf(SourceLOD < StaticMesh->GetNumSourceModels(), TEXT("ConfigureBuildSettings requested LOD index greater than num available in UStaticMesh")))
|
|
{
|
|
FStaticMeshSourceModel& SourceModel = StaticMesh->GetSourceModel(SourceLOD);
|
|
|
|
if (NewSettings.AutoGeneratedNormals != EBuildSettingBoolChange::NoChange)
|
|
{
|
|
SourceModel.BuildSettings.bRecomputeNormals =
|
|
(NewSettings.AutoGeneratedNormals == EBuildSettingBoolChange::Disable) ? false : true;
|
|
}
|
|
if (NewSettings.AutoGeneratedTangents != EBuildSettingBoolChange::NoChange)
|
|
{
|
|
SourceModel.BuildSettings.bRecomputeTangents =
|
|
(NewSettings.AutoGeneratedTangents == EBuildSettingBoolChange::Disable) ? false : true;
|
|
}
|
|
if (NewSettings.UseMikkTSpaceTangents != EBuildSettingBoolChange::NoChange)
|
|
{
|
|
SourceModel.BuildSettings.bUseMikkTSpace =
|
|
(NewSettings.UseMikkTSpaceTangents == EBuildSettingBoolChange::Disable) ? false : true;
|
|
}
|
|
}
|
|
#else
|
|
// just ignore?
|
|
#endif
|
|
}
|