void UStaticMesh::SerializeLegacySouceData(FArchive& Ar, const FBoxSphereBounds& LegacyBounds)
{
int32 InternalVersion = 0;
bool bHaveSourceData = false;
TArray<FStaticMeshOptimizationSettings> OptimizationSettings;
bool bHasBeenSimplified = false;
Ar << InternalVersion;
Ar << bHaveSourceData;
if (bHaveSourceData)
{
FStaticMeshSourceModel& SrcModel = *new(SourceModels) FStaticMeshSourceModel();
// Serialize in the old source render data.
FLegacyStaticMeshRenderData TempRenderData;
TempRenderData.Serialize(Ar, this, INDEX_NONE);
// Convert it to a raw mesh.
FRawMesh RawMesh;
BuildRawMeshFromRenderData(RawMesh, SrcModel.BuildSettings, TempRenderData, *GetPathName());
// Store the raw mesh as our source model.
SrcModel.RawMeshBulkData->SaveRawMesh(RawMesh);
}
Ar << OptimizationSettings;
Ar << bHasBeenSimplified;
// Convert any old optimization settings to the source model's reduction settings.
for (int32 i = 0; i < OptimizationSettings.Num(); ++i)
{
if (!SourceModels.IsValidIndex(i))
{
new(SourceModels) FStaticMeshSourceModel();
}
FStaticMeshSourceModel& SrcModel = SourceModels[i];
FMeshReductionSettings& NewSettings = SrcModel.ReductionSettings;
switch (OptimizationSettings[i].ReductionMethod)
{
case OT_NumOfTriangles:
NewSettings.PercentTriangles = FMath::Clamp(OptimizationSettings[i].NumOfTrianglesPercentage / 100.0f, 0.0f, 1.0f);
NewSettings.MaxDeviation = 0.0f;
break;
case OT_MaxDeviation:
NewSettings.PercentTriangles = 1.0f;
NewSettings.MaxDeviation = OptimizationSettings[i].MaxDeviationPercentage * LegacyBounds.SphereRadius;
break;
default:
NewSettings.PercentTriangles = 1.0f;
NewSettings.MaxDeviation = 0.0f;
break;
}
NewSettings.WeldingThreshold = OptimizationSettings[i].WeldingThreshold;
NewSettings.HardAngleThreshold = OptimizationSettings[i].NormalsThreshold;
NewSettings.SilhouetteImportance = (EMeshFeatureImportance::Type)OptimizationSettings[i].SilhouetteImportance;
NewSettings.TextureImportance = (EMeshFeatureImportance::Type)OptimizationSettings[i].TextureImportance;
NewSettings.ShadingImportance = (EMeshFeatureImportance::Type)OptimizationSettings[i].ShadingImportance;
}
// Serialize in any legacy LOD models.
TIndirectArray<FLegacyStaticMeshRenderData> LegacyLODModels;
LegacyLODModels.Serialize(Ar, this);
TArray<FLegacyStaticMeshLODInfo> LegacyLODInfo;
Ar << LegacyLODInfo;
for (int32 LODIndex = 0; LODIndex < LegacyLODModels.Num(); ++LODIndex)
{
if (!SourceModels.IsValidIndex(LODIndex))
{
new(SourceModels) FStaticMeshSourceModel();
}
FStaticMeshSourceModel& SrcModel = SourceModels[LODIndex];
// Really we want to use LOD0 only if the mesh has /not/ been simplified.
// Unfortunately some data seems to be corrupted in source meshes but not LOD0, so just use LOD0.
//if (SrcModel.RawMeshBulkData->IsEmpty() && (!bHasBeenSimplified || LODIndex == 0))
{
// Store the raw mesh for this LOD.
FRawMesh RawMesh;
BuildRawMeshFromRenderData(RawMesh, SrcModel.BuildSettings, LegacyLODModels[LODIndex], *GetPathName());
SrcModel.RawMeshBulkData->SaveRawMesh(RawMesh);
}
// And make sure to clear reduction settings for LOD0.
if (LODIndex == 0)
{
FMeshReductionSettings DefaultSettings;
SrcModel.ReductionSettings = DefaultSettings;
}
// Always use a hash as the guid for legacy models.
SrcModel.RawMeshBulkData->UseHashAsGuid(this);
// Setup the material map for this LOD model.
if (LODIndex == 0)
{
for (int32 SectionIndex = 0; SectionIndex < LegacyLODModels[LODIndex].Elements.Num(); ++SectionIndex)
{
FMeshSectionInfo Info;
Info.MaterialIndex = Materials.Add(LegacyLODModels[LODIndex].Elements[SectionIndex].Material);
Info.bEnableCollision = LegacyLODModels[LODIndex].Elements[SectionIndex].EnableCollision;
Info.bCastShadow = LegacyLODModels[LODIndex].Elements[SectionIndex].bEnableShadowCasting;
SectionInfoMap.Set(LODIndex, SectionIndex, Info);
}
}
else
{
for (int32 SectionIndex = 0; SectionIndex < LegacyLODModels[LODIndex].Elements.Num(); ++SectionIndex)
{
FMeshSectionInfo Info;
Info.MaterialIndex = Materials.AddUnique(LegacyLODModels[LODIndex].Elements[SectionIndex].Material);
Info.bEnableCollision = LegacyLODModels[LODIndex].Elements[SectionIndex].EnableCollision;
Info.bCastShadow = LegacyLODModels[LODIndex].Elements[SectionIndex].bEnableShadowCasting;
SectionInfoMap.Set(LODIndex, SectionIndex, Info);
}
}
}
}
