Directional Texture or Infinite Texture

Hi, are there any way for creating a directional texture, like lens flares but with a 2D
texture.

I was browsing and the only thing i found was a shader but i can’t use it.
I tried with Proyectors too but i failed.

I want to perform a texture but directional, for example if i rotate the gameobject , the texture need to rotate but in the infinite.

Got it, it can be done with a billboard.