Is it possible to get distortions effects (using _GrabPass) in SRP? I know that SRP does not have access to _GrabPass, but I think they have access to _CameraOpaqueTexture, they even added a special node to Shader Graph, I think. Do you have an example of how to achieve this in ASE using SRP templates?
In HD RP, we've recently added support for Refraction in our latest HD Lit Template, which is based on Unity's HD Lit master node, it won't be possible to support it in the same sense on the Unlit template.
However, in the LW pipeline, we support the new _CameraOpaqueTexture through our Grab Screen Color node, so its just a matter of playing around with it.
The _CameraOpaqueTexture texture is the old Grab Pass replacement and has rendered into it all the opaque objects. Please keep in mind that if you want to use it, you will need to activate it on your render pipeline settings.