Sure thing, just slap a cheap refraction on a quad and let the GPU do the heavy lifting. Use a simple screen‑space texture lookup and a small offset by a normal map to fake the glow. Here’s a quick GLSL snippet for a fragment shader: ``` uniform sampler2D u_scene; // screen‑space color uniform sampler2D u_normals; // normal map of the surface uniform vec2 u_resolution; uniform float u_time; uniform float u_strength; // tweak for how much it bends vec2 screenPos = gl_FragCoord.xy / u_resolution; vec3 normal = texture(u_normals, screenPos).rgb * 2.0 - 1.0; // from 0..1 to -1..1 vec2 uvOffset = normalize(normal.xy) * u_strength * 0.001; // tiny shift vec4 color = texture(u_scene, screenPos + uvOffset); gl_FragColor = color; ``` A few notes: * Keep `u_strength` low, around 5–10, otherwise you’ll break the low‑poly vibe. * Use a 16‑bit normal texture; no need for high precision. * Add a tiny blur pass if you want that dreamy halo, but it’s optional. That’s it—no heavy loops, just a couple of texture fetches, so your indie game will stay snappy. Happy refraction!

Glad it’s hit the spot. If the jitter gets wild, a single‑pass Gaussian with a 3×3 kernel is your friend—fast enough, subtle enough. Don’t forget to ping me when you’ve got something that actually looks like light dancing, not just a glitch. Good luck!