Custom Render Texture possibilities

Hello, i decide to create new topic about this because i see that there is not many info or tutorials about it.

What i want is change texture2D in runtime, make effect of destroyable terrain and fit PolygonCollider to it (It will look simmilar to Worms style). I want to do it with changing pixels because i want to have a lot of posiblities and efects but i dont want something like pixel perfect becuase i want to stay with normal full HD resolution and real physics.

What i found is Custom Render Texture, But im not sure if i understand it right, can i use it to change texture pixels with Shader and save changes to texture that C# code can acess this changes and even polygon collider can fit to it?

Only what i found is https://docs.unity3d.com/2017.3/Documentation/Manual/CustomRenderTextures.html where is really just a basic info and https://github.com/keijiro/RDSystem but this project is just confusing, it dont tell me whats happening there and how to use it.

Thx for any help or advices.

 

I don't quite understand what you're trying to do. I've dabbled a bit with Custom Render Textures, and I agree that the documentation isn't quite there.

If you could elaborate more I might be able to help?

 

I have 2D game, where terrain is Texture2D, and i need to do it damage like create holes and simmilar effects like in game Worms (better to check this game to understand). But i want to have normal physic with attached PolygonCollider to it that will update to changes... I do this with texture.SetPixel but doing it only with c# is so slow when you want to create hole like 300x300pixel or bigger. So i want to do this changes with Shader but bucause GPU and CPU are not synchronizated, i cant normally get changes from shader to c# code.