Strange behavior of material (blend mode opaque) placed on instanced static mesh

Development Rendering
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1

Hi,

I have very strange rendering of material (blend mode opaque and Masked) placed on instanced static mesh.
Please look at video → link text

When I generated instances in instanced static mesh it looks like Antialiasing is activated after I move the camera.

If I set blend mode to Additive or Translucent it works fine.

Where is the problem ?

Thanks

3

Looks like you don’t know what I mean. I don’t mean blur effect itself. I am talking about not fully rendered grid until I will start move with camera.

5

Hi thanks for answer. Here is my material nodes (very simple) and settings.

74384-materialnodes.png
74384-materialnodes.png510×570 51.2 KB

74385-materialsettings.png
74385-materialsettings.png541×1622 104 KB

6

Basically what I am doing is :

FActorSpawnParameters xSpawnInfo;
xSpawnInfo.SpawnCollisionHandlingOverride =  ESpawnActorCollisionHandlingMethod::Undefined;
xSpawnInfo.Owner = pxFloor;
xSpawnInfo.Name = "FullGrid";
xSpawnInfo.Instigator = nullptr;
xSpawnInfo.bDeferConstruction = false;

// Position
FVector xLocation;
xLocation.X = ASC_Grid::s_fASSUMED_CELL_SIZE * 0.5f;
xLocation.Y = ASC_Grid::s_fASSUMED_CELL_SIZE * 0.5f;
xLocation.Z = 0.1f;

if (m_pxFullGrid == nullptr)
{
	m_pxFullGrid = pxWorld->SpawnActor<ASC_Grid>(ASC_Grid::StaticClass(),    xLocation,       FRotator::ZeroRotator, xSpawnInfo);
}

if (m_pxFullGrid && m_pxFullGrid->InstancedStaticMeshComponent)
{
	FTransform xCellTransform = m_pxFullGrid->GetTransform();
	const int32 iXNumCells = FMath::CeilToInt(pxFloor->GetComponentsBoundingBox().GetSize().X * 0.01f);
	const int32 iYNumCells = FMath::CeilToInt(pxFloor->GetComponentsBoundingBox().GetSize().Y * 0.01f);

	for (int32 i = 0; i < iYNumCells; ++i)
	{
		for (int32 j = 0; j < iXNumCells; ++j)
		{
			xCellTransform.SetLocation(FVector(ASC_Grid::s_fASSUMED_CELL_SIZE * j, ASC_Grid::s_fASSUMED_CELL_SIZE * i, 0.0f));
			m_pxFullGrid->InstancedStaticMeshComponent->AddInstance(xCellTransform);
		}
	}

	FString szPathName = "/Game/StarCrooks/Materials/Grid/GridCell";
	UMaterial* pxCellMaterial = Cast<UMaterial>(StaticLoadObject(UMaterial::StaticClass(), NULL, *szPathName));
	if (pxCellMaterial)
	{
		pxCellMaterial->bUsedWithInstancedStaticMeshes = true;
		m_pxFullGrid->InstancedStaticMeshComponent->SetMaterial(0, pxCellMaterial);
	}

	return true;
}
8

Thanks. I will try to swap the materials but I am a little bit scared that I will see some strange flesh during swap material in real time.