Advanced AI Prompt for Glassmorphic Refraction Shaders

Act as a Real-Time Optics Programmer. Architect a sophisticated WebGL shader pipeline that flawlessly simulates a physical glassmorphic pane floating above a highly dynamic, moving background layer. Implement a multi-pass FBO approach or a highly optimized Gaussian blur approximation loop running [BLUR_ITERATIONS] times to obscure the backdrop. Engineer a mathematical refraction vector effect dictated by a strict [REFRACTION_INDEX] (IOR) value (e.g., 1.5 for glass) that warps the background texture relative to the viewing angle. Inject a high-frequency, procedural white-noise function to simulate a heavy [FROST_INTENSITY] surface grain, and wash the entire pane with an additive [OVERLAY_COLOR] tint. The fragment shader must explicitly calculate and correct for viewport aspect ratios so the refraction UVs do not stretch when the browser is resized.