Terrain - Runtime Virtual Textures?

Unreal Engine has very handy system for sampling terrain textures in shaders to make objects blend with it:



https://docs.unrealengine.com/4.26/en-US/RenderingAndGraphics/VirtualTexturing/Runtime/QuickStart/

Essentially it consists of 4 parts:

1. Creating the virtual texture assets you're intending to use.
2. Setting up a volume that uses these textures.
3. Setting up a landspace that uses these textures.
4. Setting up a shader for the object to sample these textures.

My question is - does Unity have anything like this to achieve the same effect?

Thank you.

All the best.

 

Unity and UE are 2 totally different engines. If your plan is to have features of UE, in Unity, im afraid your only going to get so far. Your better off using UE, if you want those features...

 

The Runtime Virtual Texturing itself is not a feature Unity has built in, but it is something others have added similar type features to Unity themselves. For example:
https://github.com/ACskyline/PVTUT

However, the method you're asking about isn't actually directly related to runtime virtual texturing. Blending meshes with terrain has been something you could do in Unreal long before RVT was implemented. And it's something you can add to Unity as well. For example the MicroSplat asset has a module that adds this functionality.
https://assetstore.unity.com/packages/tools/terrain/microsplat-terrain-blending-97364

Unity's HDRP can do something similar with the layered shader, but it requires a lot more manual setup.

 

RVT is a VT that is aimed at being used in the compute shader.
Unity does not provide such a separate solution because the use of the Compute shader is very simple unlike Unreal. Because you can make your own.

The biggest difference between VT used in Shader and VT used in Compute Shader is the presence or absence of a prebake process to remove the seamline.
For example, Unreal's RVT means that it is used for purposes such as making roads and terrain close together. What you've shown can't be viewed as RVT in a dispassionate way.

 

wat?

The use of RVT in games predates the wide availability of compute shaders. The first several implementations I'm aware of were fully capable of running on OpenGL 2.0 level hardware.

The absence of prebaking is the only difference between virtual texturing and runtime virtual texturing. If there's support for render textures, you can do RVT.