41 lines
1.8 KiB
Markdown
41 lines
1.8 KiB
Markdown
# Scene Depth Node
|
|
|
|
## Description
|
|
|
|
Provides access to the current **Camera**'s depth buffer using input **UV**, which is expected to be normalized screen coordinates.
|
|
|
|
Note: Depth buffer access requires depth buffer to be enabled on the active **Render Pipeline**. This process is different per **Render Pipeline**. It is recommended you read the documentation of your active **Render Pipeline** for information on enabling the depth buffer. If the depth buffer is unavailable this [Node](Node.md) will return mid grey.
|
|
|
|
Note: The executed HLSL code for this [Node](Node.md) is defined per **Render Pipeline**, and different **Render Pipelines** may produce different results. Custom **Render Pipelines** that wish to support this [Node](Node.md) will also need to explicitly define the behaviour for it. If undefined this [Node](Node.md) will return 1 (white).
|
|
|
|
NOTE: This [Node](Node.md) can only be used in the **Fragment** [Shader Stage](Shader-Stage.md).
|
|
|
|
#### Unity Render Pipelines Support
|
|
- High Definition Render Pipeline
|
|
- Universal Render Pipeline
|
|
|
|
## Ports
|
|
|
|
| Name | Direction | Type | Binding | Description |
|
|
|:------------ |:-------------|:-----|:---|:---|
|
|
| UV | Input | Vector 4 | Screen Position | Normalized screen coordinates |
|
|
| Out | Output | Float | None | Output value |
|
|
|
|
## Depth Sampling modes
|
|
| Name | Description |
|
|
|----------|------------------------------------|
|
|
| Linear01 | Linear depth value between 0 and 1 |
|
|
| Raw | Raw depth value |
|
|
| Eye | Depth converted to eye space units |
|
|
|
|
## Generated Code Example
|
|
|
|
The following example code represents one possible outcome of this node.
|
|
|
|
```
|
|
void Unity_SceneDepth_Raw_float(float4 UV, out float Out)
|
|
{
|
|
Out = SHADERGRAPH_SAMPLE_SCENE_DEPTH(UV);
|
|
}
|
|
```
|