int8 ComputeLODForMeshes( const TIndirectArray<class FStaticMesh>& StaticMeshes, const FSceneView& View, const FVector4& Origin, float SphereRadius, int32 ForcedLODLevel, float ScreenSizeScale )
{
int8 LODToRender = 0;
// Handle forced LOD level first
if(ForcedLODLevel >= 0)
{
int8 MaxLOD = 0;
for(int32 MeshIndex = 0 ; MeshIndex < StaticMeshes.Num() ; ++MeshIndex)
{
const FStaticMesh& Mesh = StaticMeshes[MeshIndex];
MaxLOD = FMath::Max(MaxLOD, Mesh.LODIndex);
}
LODToRender = FMath::Clamp<int8>(ForcedLODLevel, 0, MaxLOD);
}
else if (View.Family->EngineShowFlags.LOD)
{
int32 MinLODFound = INT_MAX;
bool bFoundLOD = false;
int32 NumMeshes = StaticMeshes.Num();
const float ScreenSize = ComputeBoundsScreenSize(Origin, SphereRadius, View);
for(int32 MeshIndex = NumMeshes-1 ; MeshIndex >= 0 ; --MeshIndex)
{
const FStaticMesh& Mesh = StaticMeshes[MeshIndex];
float MeshScreenSize = Mesh.ScreenSize * ScreenSizeScale;
if(MeshScreenSize >= ScreenSize)
{
LODToRender = Mesh.LODIndex;
bFoundLOD = true;
break;
}
MinLODFound = FMath::Min<int32>(MinLODFound, Mesh.LODIndex);
}
// If no LOD was found matching the screen size, use the lowest in the array instead of LOD 0, to handle non-zero MinLOD
if (!bFoundLOD)
{
LODToRender = MinLODFound;
}
}
return LODToRender;
}
int8 ComputeStaticMeshLOD( const FStaticMeshRenderData* RenderData, const FVector4& Origin, const float SphereRadius, const FSceneView& View, float FactorScale )
{
const int32 NumLODs = MAX_STATIC_MESH_LODS;
const float ScreenSize = ComputeBoundsScreenSize(Origin, SphereRadius, View) * FactorScale;
// Walk backwards and return the first matching LOD
for(int32 LODIndex = NumLODs - 1 ; LODIndex >= 0 ; --LODIndex)
{
if(RenderData->ScreenSize[LODIndex] > ScreenSize)
{
return LODIndex;
}
}
return 0;
}
int8 ComputeLODForMeshes( const TIndirectArray<class FStaticMesh>& StaticMeshes, const FSceneView& View, const FVector4& Origin, float SphereRadius, int32 ForcedLODLevel, float ScreenSizeScale )
{
int8 LODToRender = 0;
// Handle forced LOD level first
if(ForcedLODLevel >= 0)
{
int8 MaxLOD = 0;
for(int32 MeshIndex = 0 ; MeshIndex < StaticMeshes.Num() ; ++MeshIndex)
{
const FStaticMesh& Mesh = StaticMeshes[MeshIndex];
MaxLOD = FMath::Max(MaxLOD, Mesh.LODIndex);
}
LODToRender = FMath::Clamp<int8>(ForcedLODLevel, 0, MaxLOD);
}
else
{
int32 NumMeshes = StaticMeshes.Num();
const float ScreenSize = ComputeBoundsScreenSize(Origin, SphereRadius, View);
for(int32 MeshIndex = NumMeshes-1 ; MeshIndex >= 0 ; --MeshIndex)
{
const FStaticMesh& Mesh = StaticMeshes[MeshIndex];
if(View.Family->EngineShowFlags.LOD == 1)
{
float MeshScreenSize = Mesh.ScreenSize * ScreenSizeScale;
if(MeshScreenSize >= ScreenSize)
{
LODToRender = Mesh.LODIndex;
break;
}
}
}
}
return LODToRender;
}
void FStaticMeshEditorViewportClient::DrawCanvas( FViewport& InViewport, FSceneView& View, FCanvas& Canvas )
{
#if TODO_STATICMESH
if ( StaticMesh->bHasBeenSimplified && SimplygonLogo && SimplygonLogo->Resource )
{
const float LogoSizeX = 64.0f;
const float LogoSizeY = 40.65f;
const float Padding = 6.0f;
const float LogoX = Viewport->GetSizeXY().X - Padding - LogoSizeX;
const float LogoY = Viewport->GetSizeXY().Y - Padding - LogoSizeY;
Canvas->DrawTile(
LogoX,
LogoY,
LogoSizeX,
LogoSizeY,
0.0f,
0.0f,
1.0f,
1.0f,
FLinearColor::White,
SimplygonLogo->Resource,
SE_BLEND_Opaque );
}
#endif // #if TODO_STATICMESH
auto StaticMeshEditor = StaticMeshEditorPtr.Pin();
auto StaticMeshEditorViewport = StaticMeshEditorViewportPtr.Pin();
if (!StaticMeshEditor.IsValid() || !StaticMeshEditorViewport.IsValid())
{
return;
}
const int32 HalfX = Viewport->GetSizeXY().X/2;
const int32 HalfY = Viewport->GetSizeXY().Y/2;
// Draw socket names if desired.
if( bShowSockets )
{
for(int32 i=0; i<StaticMesh->Sockets.Num(); i++)
{
UStaticMeshSocket* Socket = StaticMesh->Sockets[i];
if(Socket!=NULL)
{
FMatrix SocketTM;
Socket->GetSocketMatrix(SocketTM, StaticMeshComponent);
const FVector SocketPos = SocketTM.GetOrigin();
const FPlane proj = View.Project( SocketPos );
if(proj.W > 0.f)
{
const int32 XPos = HalfX + ( HalfX * proj.X );
const int32 YPos = HalfY + ( HalfY * (proj.Y * -1) );
FCanvasTextItem TextItem( FVector2D( XPos, YPos ), FText::FromString( Socket->SocketName.ToString() ), GEngine->GetSmallFont(), FLinearColor(FColor(255,196,196)) );
Canvas.DrawItem( TextItem );
const UStaticMeshSocket* SelectedSocket = StaticMeshEditor->GetSelectedSocket();
if (bManipulating && SelectedSocket == Socket)
{
//Figure out the text height
FTextSizingParameters Parameters(GEngine->GetSmallFont(), 1.0f, 1.0f);
UCanvas::CanvasStringSize(Parameters, *Socket->SocketName.ToString());
int32 YL = FMath::TruncToInt(Parameters.DrawYL);
DrawAngles(&Canvas, XPos, YPos + YL,
Widget->GetCurrentAxis(),
GetWidgetMode(),
Socket->RelativeRotation,
Socket->RelativeLocation);
}
}
}
}
}
TArray<SStaticMeshEditorViewport::FOverlayTextItem> TextItems;
int32 CurrentLODLevel = StaticMeshEditor->GetCurrentLODLevel();
if (CurrentLODLevel == 0)
{
CurrentLODLevel = ComputeStaticMeshLOD(StaticMesh->RenderData, StaticMeshComponent->Bounds.Origin, StaticMeshComponent->Bounds.SphereRadius, View);
}
else
{
CurrentLODLevel -= 1;
}
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "LOD_F", "LOD: {0}"), FText::AsNumber(CurrentLODLevel))));
float CurrentScreenSize = ComputeBoundsScreenSize(StaticMeshComponent->Bounds.Origin, StaticMeshComponent->Bounds.SphereRadius, View);
FNumberFormattingOptions FormatOptions;
FormatOptions.MinimumFractionalDigits = 3;
FormatOptions.MaximumFractionalDigits = 6;
FormatOptions.MaximumIntegralDigits = 6;
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "ScreenSize_F", "Current Screen Size: {0}"), FText::AsNumber(CurrentScreenSize, &FormatOptions))));
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "Triangles_F", "Triangles: {0}"), FText::AsNumber(StaticMeshEditorPtr.Pin()->GetNumTriangles(CurrentLODLevel)))));
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "Vertices_F", "Vertices: {0}"), FText::AsNumber(StaticMeshEditorPtr.Pin()->GetNumVertices(CurrentLODLevel)))));
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "UVChannels_F", "UV Channels: {0}"), FText::AsNumber(StaticMeshEditorPtr.Pin()->GetNumUVChannels(CurrentLODLevel)))));
if( StaticMesh->RenderData->LODResources.Num() > 0 )
{
if (StaticMesh->RenderData->LODResources[0].DistanceFieldData != nullptr )
{
const FDistanceFieldVolumeData& VolumeData = *(StaticMesh->RenderData->LODResources[0].DistanceFieldData);
if (VolumeData.Size.GetMax() > 0)
{
float MemoryMb = (VolumeData.Size.X * VolumeData.Size.Y * VolumeData.Size.Z * VolumeData.DistanceFieldVolume.GetTypeSize()) / (1024.0f * 1024.0f);
FNumberFormattingOptions NumberOptions;
NumberOptions.MinimumFractionalDigits = 2;
NumberOptions.MaximumFractionalDigits = 2;
if (VolumeData.bMeshWasClosed)
{
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "DistanceFieldRes_F", "Distance Field: {0}x{1}x{2} = {3}Mb"), FText::AsNumber(VolumeData.Size.X), FText::AsNumber(VolumeData.Size.Y), FText::AsNumber(VolumeData.Size.Z), FText::AsNumber(MemoryMb, &NumberOptions))));
}
else
{
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
NSLOCTEXT("UnrealEd", "DistanceFieldClosed_F", "Distance Field: Mesh was not closed and material was one-sided")));
}
}
}
}
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "ApproxSize_F", "Approx Size: {0}x{1}x{2}"),
FText::AsNumber(int32(StaticMesh->GetBounds().BoxExtent.X * 2.0f)), // x2 as artists wanted length not radius
FText::AsNumber(int32(StaticMesh->GetBounds().BoxExtent.Y * 2.0f)),
FText::AsNumber(int32(StaticMesh->GetBounds().BoxExtent.Z * 2.0f)))));
// Show the number of collision primitives if we are drawing collision.
if(bShowCollision && StaticMesh->BodySetup)
{
TextItems.Add(SStaticMeshEditorViewport::FOverlayTextItem(
FText::Format(NSLOCTEXT("UnrealEd", "NumPrimitives_F", "Num Primitives: {0}"), FText::AsNumber(StaticMesh->BodySetup->AggGeom.GetElementCount()))));
}
StaticMeshEditorViewport->PopulateOverlayText(TextItems);
if(bDrawUVs)
{
const int32 YPos = 160;
DrawUVsForMesh(Viewport, &Canvas, YPos);
}
}
FLODMask ComputeLODForMeshes( const TIndirectArray<class FStaticMesh>& StaticMeshes, const FSceneView& View, const FVector4& Origin, float SphereRadius, int32 ForcedLODLevel, float ScreenSizeScale )
{
FLODMask LODToRender;
// Handle forced LOD level first
if(ForcedLODLevel >= 0)
{
// Note: starting at -1 which is the default LODIndex, for cases where LODIndex didn't get set
int8 MaxLOD = -1;
for(int32 MeshIndex = 0 ; MeshIndex < StaticMeshes.Num() ; ++MeshIndex)
{
const FStaticMesh& Mesh = StaticMeshes[MeshIndex];
MaxLOD = FMath::Max(MaxLOD, Mesh.LODIndex);
}
LODToRender.SetLOD(FMath::Clamp<int8>(ForcedLODLevel, 0, MaxLOD));
}
else if (View.Family->EngineShowFlags.LOD)
{
int32 NumMeshes = StaticMeshes.Num();
if (NumMeshes && StaticMeshes[0].bDitheredLODTransition)
{
for (int32 SampleIndex = 0; SampleIndex < 2; SampleIndex++)
{
int32 MinLODFound = INT_MAX;
bool bFoundLOD = false;
const float ScreenSize = ComputeTemporalLODBoundsScreenSize(Origin, SphereRadius, View, SampleIndex);
for(int32 MeshIndex = NumMeshes-1 ; MeshIndex >= 0 ; --MeshIndex)
{
const FStaticMesh& Mesh = StaticMeshes[MeshIndex];
float MeshScreenSize = Mesh.ScreenSize * ScreenSizeScale;
if(MeshScreenSize >= ScreenSize)
{
LODToRender.SetLODSample(Mesh.LODIndex, SampleIndex);
bFoundLOD = true;
break;
}
MinLODFound = FMath::Min<int32>(MinLODFound, Mesh.LODIndex);
}
// If no LOD was found matching the screen size, use the lowest in the array instead of LOD 0, to handle non-zero MinLOD
if (!bFoundLOD)
{
LODToRender.SetLODSample(MinLODFound, SampleIndex);
}
}
}
else
{
int32 MinLODFound = INT_MAX;
bool bFoundLOD = false;
const float ScreenSize = ComputeBoundsScreenSize(Origin, SphereRadius, View);
for(int32 MeshIndex = NumMeshes-1 ; MeshIndex >= 0 ; --MeshIndex)
{
const FStaticMesh& Mesh = StaticMeshes[MeshIndex];
float MeshScreenSize = Mesh.ScreenSize * ScreenSizeScale;
if(MeshScreenSize >= ScreenSize)
{
LODToRender.SetLOD(Mesh.LODIndex);
bFoundLOD = true;
break;
}
MinLODFound = FMath::Min<int32>(MinLODFound, Mesh.LODIndex);
}
// If no LOD was found matching the screen size, use the lowest in the array instead of LOD 0, to handle non-zero MinLOD
if (!bFoundLOD)
{
LODToRender.SetLOD(MinLODFound);
}
}
}
return LODToRender;
}
