forked from BilalY/Rasagar
93 lines
3.5 KiB
Markdown
93 lines
3.5 KiB
Markdown
# 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](Shader-Graph-Nodes.md) for more information.
|
|
|
|
## Limitations
|
|
|
|
The water master stack shader graph has the following limitations:
|
|
- When using a custom mesh, Vertex color is not imported in the Shader Graph, thus it cannot be used as an input for customizing the water surface appearence.
|
|
- When disabling foam on the water surface, custom foam injected in the shader graph node is not affected.
|
|
- When sampling the scene color using the node HD Scene Color, make sure to disable **Dynamic Render Pass Culling** in the [HDRP Graphics settings window](Default-Settings-Window.md) to be sure to have the water surface rendered in the color buffer. (especially if the distortion feature is not used on the scene)
|
|
- The UV node when in a water master stack is the world space position instead of the usual [0, 1] UV values.
|
|
## Contexts
|
|
|
|
[!include[](snippets/master-stacks-contexts-intro.md)]
|
|
|
|
### 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.
|
|
|
|
<table>
|
|
<tr>
|
|
<th>Property</th>
|
|
<th>Description</th>
|
|
<th>Setting Dependency</th>
|
|
<th>Default Value</th>
|
|
|
|
[!include[](snippets/shader-graph-blocks/vertex-position.md)]
|
|
[!include[](snippets/shader-graph-blocks/vertex-normal.md)]
|
|
|
|
<tr>
|
|
<td><b>UV0</b></td>
|
|
<td>Water properties packed into a UV coordinate set for the vertex context.</td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><b>UV1</b></td>
|
|
<td>Water properties packed into a UV coordinate set for the vertex context.</td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
|
|
</table>
|
|
|
|
|
|
### Fragment Context
|
|
|
|
#### Default
|
|
|
|
When you create a new Water Master Stack, the Fragment Context contains the following Blocks by default:
|
|
|
|
<table>
|
|
<tr>
|
|
<th>Property</th>
|
|
<th>Description</th>
|
|
<th>Setting Dependency</th>
|
|
<th>Default Value</th>
|
|
</tr>
|
|
|
|
[!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)]
|
|
|
|
</table> |