73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
|
// Copyright Epic Games, Inc. All Rights Reserved.
|
||
|
|
|
||
|
|
#include "Factories/VolumeTextureFactory.h"
|
||
|
|
#include "Styling/SlateBrush.h"
|
||
|
|
#include "Brushes/SlateDynamicImageBrush.h"
|
||
|
|
#include "Engine/VolumeTexture.h"
|
||
|
|
|
||
|
|
#define LOCTEXT_NAMESPACE "VolumeTextureFactory"
|
||
|
|
|
||
|
|
UVolumeTextureFactory::UVolumeTextureFactory(const FObjectInitializer& ObjectInitializer)
|
||
|
|
: Super(ObjectInitializer)
|
||
|
|
{
|
||
|
|
bCreateNew = true;
|
||
|
|
bEditAfterNew = true;
|
||
|
|
SupportedClass = UVolumeTexture::StaticClass();
|
||
|
|
}
|
||
|
|
|
||
|
|
FText UVolumeTextureFactory::GetDisplayName() const
|
||
|
|
{
|
||
|
|
return LOCTEXT("VolumeTextureFactoryDescription", "Volume Texture");
|
||
|
|
}
|
||
|
|
|
||
|
|
bool UVolumeTextureFactory::ConfigureProperties()
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
UObject* UVolumeTextureFactory::FactoryCreateNew(UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, FFeedbackContext* Warn)
|
||
|
|
{
|
||
|
|
UVolumeTexture* NewVolumeTexture = NewObject<UVolumeTexture>(InParent, Name, Flags);
|
||
|
|
NewVolumeTexture->MipGenSettings = TMGS_FromTextureGroup;
|
||
|
|
NewVolumeTexture->NeverStream = true;
|
||
|
|
NewVolumeTexture->CompressionNone = false;
|
||
|
|
|
||
|
|
if (InitialTexture)
|
||
|
|
{
|
||
|
|
NewVolumeTexture->SRGB = InitialTexture->SRGB;
|
||
|
|
|
||
|
|
const FTextureSource& Source = InitialTexture->Source;
|
||
|
|
const int32 NumPixels = Source.GetSizeX() * Source.GetSizeY();
|
||
|
|
|
||
|
|
if (NumPixels > 0)
|
||
|
|
{
|
||
|
|
// By default, assume that the 2d texture holds a square images.
|
||
|
|
int32 TileSize = FMath::RoundToInt(FMath::Pow((float)NumPixels, 1.f / 3.f));
|
||
|
|
|
||
|
|
// Remap the tiles as if there were streached accross the texture length.
|
||
|
|
int32 NumTilesBySide = FMath::RoundToInt(FMath::Sqrt((float)(Source.GetSizeX() / TileSize) * (Source.GetSizeY() / TileSize)));
|
||
|
|
|
||
|
|
if (NumTilesBySide > 0)
|
||
|
|
{
|
||
|
|
NewVolumeTexture->Source2DTexture = InitialTexture;
|
||
|
|
NewVolumeTexture->Source2DTileSizeX = Source.GetSizeX() / NumTilesBySide;
|
||
|
|
NewVolumeTexture->Source2DTileSizeY = Source.GetSizeY() / NumTilesBySide;
|
||
|
|
|
||
|
|
NewVolumeTexture->UpdateSourceFromSourceTexture();
|
||
|
|
NewVolumeTexture->UpdateResource();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Initialize the texture with a single texel of data
|
||
|
|
const uint8 Texel[] = {0, 0, 0, 255};
|
||
|
|
NewVolumeTexture->Source.Init(1, 1, 1, 1, TSF_BGRA8, Texel);
|
||
|
|
NewVolumeTexture->UpdateResource();
|
||
|
|
}
|
||
|
|
|
||
|
|
return NewVolumeTexture;
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef LOCTEXT_NAMESPACE
|