Water

Use the Water Master Stack to render custom physically based water Material in the High Definition Render Pipeline (HDRP). The Water Master Stack approximately models a volumetric water medium, and includes properties to render effects such as caustics, scattering, and refraction.

Create a Water shader graph

To create a Water material in Shader Graph, use one of the following methods:

To create a new shader graph, go to Assets > Create > Shader Graph > HDRP and select Water Shader Graph.

To modify an existing shader graph:

  1. Open the shader graph in the Shader Editor.
  2. In Graph Settings, select the HDRP Target. If there isn't an HDRP Target, go to Active Targets select the Plus button, and select HDRP.
  3. In Material, select Water.

To duplicate the default shader graph HDRP uses for water surfaces in the Game Object > Water Surface menu:

  1. In the Project window, go to Packages > High Definition RP > Runtime > RenderPipelineResources > ShaderGraph.
  2. Copy the Water.shadergraph asset, then paste the copy into your Assets folder.

See Water Shader Graph nodes for more information.

Contexts

This Master Stack material type has its own set of Graph Settings. Because of the relationship between settings and Blocks, this has consequences on which Blocks are relevant to the Graph. This section contains information on the Blocks this Master Stack material type adds by default, and which Blocks set properties for this Master Stack material type's Graph Settings.

For more information about the relationship between Graph Settings and Blocks, see Contexts and Blocks.

Vertex Context

Default

When you create a new Water Master Stack, the Vertex Context contains the following Blocks by default. All the Blocks are mandatory. If you remove any of the Blocks, the water shader graph doesn't work.

[!include[](snippets/shader-graph-blocks/vertex-position.md)] [!include[](snippets/shader-graph-blocks/vertex-normal.md)]
Property Description Setting Dependency Default Value
UV0 Water properties packed into a UV coordinate set for the vertex context.
UV1 Water properties packed into a UV coordinate set for the vertex context.

Fragment Context

Default

When you create a new Water Master Stack, the Fragment Context contains the following Blocks by default:

[!include[](snippets/shader-graph-blocks/normal-world-space.md)] [!include[](snippets/shader-graph-blocks/low-frequency-normal.md)] [!include[](snippets/shader-graph-blocks/tip-thickness.md)] [!include[](snippets/shader-graph-blocks/base-color.md)] [!include[](snippets/shader-graph-blocks/caustics.md)] [!include[](snippets/shader-graph-blocks/smoothness.md)] [!include[](snippets/shader-graph-blocks/alpha.md)] [!include[](snippets/shader-graph-blocks/foam.md)]
Property Description Setting Dependency Default Value