u/tecknoizein r/GraphicsProgramming • Recommends
On “Wanna know how this shader in the game CONTROL was made?”
Well, there's a couple of ways this could be done, but it looks like their particle effect is driving the chromatic aberration filter. When rendering the particles, they might spawn specific particles that are not necessarily visible but writes to a screen buffer. That buffer is read by the chromatic aberration filter to accentuate the effect where the particles have written a value.
For reference, see [video It's not that exact effect but the idea is the same.