In unreal engine when using custom shader node how to enable alpha blend and its blend mode

[Anning5]

In unreal engine when using custom shader node how to enable alpha blend and its blend mode

[HellDunkelkeit]

The custom shader node is more like an “expression” to use for calculating intermediate outputs. It does not have blending options as this is highly dependent of the rendering/shading technique you are using, deferred or forward. Blending type is decided by material type (translucent, opaque etc.) and cannot be set freely.

[Anning5]

Thank you @HellDunkelkeit! Is there a way to use both custom shader and specify my alpha blend mode at the same time then? As I guess this use case is not uncommon?

[HellDunkelkeit]

There is a limited number of blend modes you can choose from. I don’t think you can add a custom blend mode without employing render targets. I can see this only making sense if you were using forward shading (Project Settings) no post processing (filmic tone mapping etc.).
What is it you are trying to do?

[Anning5]

I see. Sorry I made a mistake that I thought I should set the blend mode in the custom shader node’s details tab, but in fact I should set it in the material result node LOL, thanks a lot @HellDunkelkeit !