bool UParticleModuleCollisionGPU::IsValidForLODLevel(UParticleLODLevel* LODLevel, FString& OutErrorString)
{
UMaterialInterface* Material = NULL;
if (LODLevel && LODLevel->RequiredModule)
{
Material = LODLevel->RequiredModule->Material;
}
if (Material == NULL)
{
Material = UMaterial::GetDefaultMaterial(MD_Surface);
}
check(Material);
EBlendMode BlendMode = BLEND_Opaque;
const FMaterialResource* MaterialResource = Material->GetMaterialResource(GetWorld() ? GetWorld()->FeatureLevel : GMaxRHIFeatureLevel);
if(MaterialResource)
{
BlendMode = MaterialResource->GetBlendMode();
}
if (CollisionMode == EParticleCollisionMode::SceneDepth && (BlendMode == BLEND_Opaque || BlendMode == BLEND_Masked))
{
OutErrorString = NSLOCTEXT("UnrealEd", "CollisionOnOpaqueEmitter", "Scene depth collision cannot be used on emitters with an opaque material.").ToString();
return false;
}
if (CollisionMode == EParticleCollisionMode::DistanceField)
{
static const auto CVar = IConsoleManager::Get().FindTConsoleVariableDataInt(TEXT("r.GenerateMeshDistanceFields"));
if (CVar->GetValueOnGameThread() == 0)
{
OutErrorString = NSLOCTEXT("UnrealEd", "CollisionWithoutDistanceField", "Distance Field collision requires the 'Generate Mesh Distance Fields' Renderer project setting to be enabled.").ToString();
return false;
}
}
if (LODLevel->TypeDataModule && LODLevel->TypeDataModule->IsA(UParticleModuleTypeDataGpu::StaticClass()))
{
if(!IsDistributionAllowedOnGPU(ResilienceScaleOverLife.Distribution))
{
OutErrorString = GetDistributionNotAllowedOnGPUText(StaticClass()->GetName(), "ResilienceScaleOverLife" ).ToString();
return false;
}
}
return true;
}
bool UParticleModuleCollisionGPU::IsValidForLODLevel(UParticleLODLevel* LODLevel, FString& OutErrorString)
{
UMaterialInterface* Material = NULL;
if (LODLevel && LODLevel->RequiredModule)
{
Material = LODLevel->RequiredModule->Material;
}
if (Material == NULL)
{
Material = UMaterial::GetDefaultMaterial(MD_Surface);
}
check(Material);
EBlendMode BlendMode = BLEND_Opaque;
const FMaterialResource* MaterialResource = Material->GetMaterialResource(GetWorld() ? GetWorld()->FeatureLevel : GMaxRHIFeatureLevel);
if(MaterialResource)
{
BlendMode = MaterialResource->GetBlendMode();
}
if (BlendMode == BLEND_Opaque || BlendMode == BLEND_Masked)
{
OutErrorString = NSLOCTEXT("UnrealEd", "CollisionOnOpaqueEmitter", "Scene depth collision cannot be used on emitters with an opaque material.").ToString();
return false;
}
if (LODLevel->TypeDataModule && LODLevel->TypeDataModule->IsA(UParticleModuleTypeDataGpu::StaticClass()))
{
if(!IsDistributionAllowedOnGPU(ResilienceScaleOverLife.Distribution))
{
OutErrorString = GetDistributionNotAllowedOnGPUText(StaticClass()->GetName(), "ResilienceScaleOverLife" ).ToString();
return false;
}
}
return true;
}