Translucent material is not working

Development Rendering
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6

Ah, it looks like you are using 5.2. I haven’t installed that version, so I wasn’t able to build your solution.

I did take a look at the code though, and I think the way you are fetching the material is a bit odd, and I wonder if that might be the issue.

I would create a class derived from Developer Settings and assign the material in that. Then you could use that to retrieve the material.

Example:

#pragma once

#include "CoreMinimal.h"
#include "Engine/DeveloperSettings.h"
#include "MyDeveloperSettings.generated.h"

class UMaterialInterface;

UCLASS(Config = Game, defaultconfig, meta = (DisplayName = "My Developer Settings"))
class WHATEVER_API UMyDeveloperSettings : public UDeveloperSettings
{
	GENERATED_BODY()

public:
	UMyDeveloperSettings();

	UPROPERTY(Config, EditDefaultsOnly)
		TSoftObjectPtr<UMaterialInterface> defaultTileMaterial;
	
};

Then, in your code, you can grab the material from the CDO:

CurrentBatch->Material = GetDefault<UMyDeveloperSettings>()->defaultTileMaterial.LoadSynchronous();

I haven’t tested this code, but it should work.