Flexible Glass - Complete Liquid Glass System

Note: Certain reviews were carried over from Flexible UI Suite, since that bundle contains free "upgrades" to the standalone versions of its assets (Flexible Image, Flexible Blur, and now, Flexible Glass.

DISCUSSION | DISCORD | SUPPORT/INQUIRIES

Flexible Glass is a complete Liquid Glass system for Unity uGUI.

Create clear lenses, frosted panels, fluid interfaces, and custom-shaped glass—with built-in blur, refraction, lighting, and soft shadows. No additional Asset Store packages required.

Glass that can merge, separate, and change shape

Combine panels into continuous glass surfaces, smoothly join neighboring elements, or subtract shapes to create holes and cutouts. Animate their positions and shape parameters to build expanding controls, connected panels, and fluid transitions. Adjust join softness from crisp intersections to soft, liquid connections.

Parametric shapes and sprite-defined glass

Create circles, capsules, and squircles, or adjust each corner independently with rounding, smoothing, chamfering, and concavity controls. For custom silhouettes, use a sprite’s alpha to generate the glass shape automatically.

Cached GPU-generated distance fields improve performance and allow for arbitrary shapes.

Flexible control

• Physically based refraction: Shape the lens with optical thickness, depth, and surface smoothness. Refractive index and Abbe number controls for chromatic dispersion.
• Magnification: Enlarge the background beneath the glass without scaling the panel or its contents. Great for magnifying glass effects!
• Flexible edge lighting: Choose directional, opposing, or screen-space point lighting. Adjust highlight and shadow colors, light spread, and independent inner and outer light-band widths.
• Soft shadows: Control shadow color, opacity, softness, and offset, with automatic dithering.
• Shared Materials: Automatic material management minimizes draw calls.
• High-quality blur included: Highly optimized, built-in dual-filter Kawase blur delivers clear-to-frosted glass out of the box, comparable to most standalone blur assets.
• Go beyond Kawase with Flexible Blur: Optional integration unlocks multiple blur algorithms—including Gaussian—customizable multi-stage presets, advanced resampling, stabilization, and extensive tuning options. Flexible Blur is the broadest and most advanced blur toolkit for Unity (or any other game engine).

Two complementary components

Use UIGlass for surfaces that merge and subtract from one another. Use GlassImage for conventional uGUI Image features like masking and CanvasGroup fading. Both support parametric and sprite-defined glass.

Includes detailed documentation.

Integrates with Flexible Blur, the most advanced UI Blur solution for Unity, for even better blur (built-in blur is still very competitive with standalone blur solutions)

Available in the Flexible UI Suite Bundle.

Requirements: Unity 2022.3 or Unity 6 with URP and compute-shader-capable hardware supporting Shader Model 4.5 or newer. Supports, but does not require, Render Graph. Built-in Render Pipeline and HDRP are not supported.