WidgetSpriteShader - How to achieve transparency?

[antony.wells]

Hi, I am using a widgetSpriteShader, with radial blur post processing material. It works, but I can not figure out how to just render the non-transparent parts of the image being rendered?

Failing something already possible, how can you write your own post processing materials? Is this possible? Is there a link to a tutorial or example of a custom post processing? I'd like to know this either way tbh.

Here is a shot. As you can see, the game title is drawn with radial blur, but I can not figure out how to only render the non transparent parts of the image.

 

 

[leon.dong]

Is this link helpful ?

https://developer.unigine.com/en/docs/2.11/code/uusl/create_post?rlang=cpp