FAQ

Select Irregular topology. If the model's pivot is not at its center, click Center Pivot in the Advanced Settings section. Alternatively, adjust Extents Scale or Upper Limit to fit the liquid to the container without modifying the pivot.

Two approaches work well:

1. Cylinder topology — treats the container as if it has an invisible cap on top. Often the simplest solution.
2. Nested approach — place a separate LiquidVolume with Cylinder topology and Default No Flask detail inside your open container mesh. See the NonCapped demo scene for a working example.

Rendering

Enable Interleaved Rendering in the Liquid Volume Render Feature settings on your URP asset.

Edit the shader file for your current detail level and remove the noforwardadd keyword. This enables multi-light support.

Yes. Tested on Samsung Galaxy S6 and iPhone 7 and newer. For best performance on mobile, consider disabling Refraction Blur, using Cylinder instead of Irregular topology, and disabling Depth Aware. See Performance Tips.

Scripting

Use the liquidSurfaceYPosition property:

float surfaceY = lv.liquidSurfaceYPosition;

Create a LiquidLayer[] array and assign it to liquidLayers:

using LiquidVolumeFX;

LiquidVolume lv = GetComponent<LiquidVolume>();

var layers = new LiquidVolume.LiquidLayer[4];
layers[0].amount = 0.25f;
layers[0].density = 1f;
layers[0].color = Color.red;

layers[1].amount = 0.2f;
layers[1].density = 0.8f;
layers[1].color = Color.green;

layers[2].amount = 0.15f;
layers[2].density = 0.6f;
layers[2].color = Color.blue;

layers[3].amount = 0.1f;
layers[3].density = 0.4f;
layers[3].color = Color.gray;

lv.liquidLayers = layers;
lv.UpdateLayers();

Build & Compilation

Delete unused shader files from LiquidVolume/Resources/Shaders and disable unused Shader Features in the inspector. See Performance Tips for the full list of shaders and optimization strategies.

Set Edit > Graphics Emulation > WebGL 2.0 in the Unity Editor. The built application supports WebGL 1.0, but the Editor requires WebGL 2.0 emulation.

Yes. All Kronnect assets are fully compatible with Unity 6. The minimum supported version is Unity 2022.3 LTS, and this includes Unity 6 and any newer releases.

You can assign your directional light to the directional light slot in the LiquidVolume settings. This will make the liquid respond to the directional light similar to standard lit shaders.

Expand the Flask material and enable the 'Receive Shadow' option. You may also need to disable certain reflection-related options in the material settings. Make sure 'Receive Shadow' is enabled for proper shadow handling.

The asset uses a raymarching shader that samples the media along a ray crossing the flask. For each ray, it determines whether each sample point is in air, foam, or liquid, and computes the contribution to the final blend. The number of samples can be customized in the inspector under the advanced section.

Use the GetSpillPoint() function from the LiquidVolume script, which returns the position of the spill point and how much liquid would be spilled. This is more reliable than manual calculations using atan(r/h).

This is typically a URP setup issue. Ensure the Liquid Volume Render Feature is present in all URP assets by using the Kronnect Hub tool to verify the setup. Additionally, try enabling interleaved rendering in the render feature settings.

Please visit the Support Center and use our AI Support Assistant to get answers. If the issue persists, submit a reproduction project so we can investigate further and help you.