i am triying to make and shockwave (aka halo, heat wave, etc) around and a explosion.
i made it here
but i need apply on transpárent texture … to apply distortion on enviroment…
in my game i use a sphere growing… but not is the ideal shockwave…
somebody can help me, i am a newie with shaders …
*the explosion is and spritesheet animation…
Maybe using gltf volume extension can help you
You model and export a gltf that is torus or a sphere with volume rendering and change its size at runtime for the shock wave blast.
good challange
You could keep doing the spheres like you are doing but capture them in a separate render target texture then using a post pass use that to distort the scene.
mm, no, i suppose that shader could work with all canvas content… 
postprocess hapeend for all content