MaterialExpressionIVSmoke_TextureSample.h

// Copyright (c) 2026, Team SDB. All rights reserved.
#pragma once
#include "CoreMinimal.h"
#include "Materials/MaterialExpression.h"
#include "MaterialExpressionIVSmoke_TextureSample.generated.h"
 
/**
 * Smoke texture type for IVSmoke_Texture sample node
 */
UENUM(BlueprintType)
enum class EIVSmokeTextureType : uint8
{
    /** PostProcessInput0 (SmokeColor, SmokeAlpha) from upsample filter */
    SmokeColor,
    /** PostProcessInput1 (SmokeLocalPos ) from raymarching */
    SmokeLocalPos,
    /** PostProcessInput3 SceneColor */
    SceneColor,
    /** PostProcessInput4 (SmokeWorldPos, SmokeLinearDepth) from raymarching */
    SmokeWorldPosLinearDepth
};
/**
 *  IVSMoke Dedicated Node Available in Unreal Material
 */
UCLASS(collapsecategories, hidecategories = Object)
class IVSMOKE_API UMaterialExpressionIVSmoke_TextureSample : public UMaterialExpression
{
    GENERATED_BODY()
public:
    UMaterialExpressionIVSmoke_TextureSample();
 
#if WITH_EDITOR
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override;
    virtual uint32 GetOutputType(int32 OutputIndex) override;
#endif
 
public:
    /** Features such as input UVs on existing SceneTexture nodes */
    UPROPERTY()
    FExpressionInput UVs;
    /** Textures to be sampled. See EIVSmokeTextureType */
    UPROPERTY(EditAnywhere, Category = "Source")
    EIVSmokeTextureType TextureType;
    /** Output R channel enabled */
    UPROPERTY(EditAnywhere, Category = "MaterialExpression", meta = (ShowAsComponentMask))
    uint32 R : 1;
    /** Output G channel enabled */
    UPROPERTY(EditAnywhere, Category = "MaterialExpression", meta = (ShowAsComponentMask))
    uint32 G : 1;
    /** Output B channel enabled */
    UPROPERTY(EditAnywhere, Category = "MaterialExpression", meta = (ShowAsComponentMask))
    uint32 B : 1;
    /** Output A channel enabled */
    UPROPERTY(EditAnywhere, Category = "MaterialExpression", meta = (ShowAsComponentMask))
    uint32 A : 1;
};