forked from BilalY/Rasagar
49 lines
4.9 KiB
Markdown
49 lines
4.9 KiB
Markdown
# Cloud Layer Volume Override reference
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The Cloud Layer Volume Override lets you configure a simple representation of clouds.
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## Properties
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[!include[](snippets/Volume-Override-Enable-Properties.md)]
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| Property | Description |
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| ------------------------- | ------------------------------------------------------------ |
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| **Opacity** | The global opacity of the cloud layer. A value of 0 makes clouds completely transparent. |
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| **Upper Hemisphere Only** | Indicates whether the Cloud Layer exclusively renders above the horizon or not. When enabled, HDRP still uses the entire **Cloud Map** texture, but the clouds will be renderer above the horizon. |
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| **Layers** | The number of cloud layers to render. Each layer has its own set of properties. The options are:<br/>• **1**: Renders a single cloud layer.<br/>• **2**: Renders two cloud layers. |
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| **Resolution** | The resolution of the texture HDRP uses to bake the clouds. |
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### Per-layer
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The Inspector shows the following properties for each cloud layer. The **Layers** property determines the number of cloud layers to render.
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| Property | Description |
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| ---------------------- | ------------------------------------------------------------ |
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| **Cloud Map** | Assign a Texture that HDRP uses to render the cloud layer. For more information about the cloud map, see [about the cloud map](create-simple-clouds-cloud-layer#about-the-cloud-map). |
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| - **Opacity R** | The opacity multiplier to apply to the **Cloud Map**'s red channel. |
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| - **Opacity G** | The opacity multiplier to apply to the **Cloud Map**'s green channel. |
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| - **Opacity B** | The opacity multiplier to apply to the **Cloud Map**'s blue channel. |
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| - **Opacity A** | The opacity multiplier to apply to the **Cloud Map**'s alpha channel. |
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| **Altitude** | The altitude of the Cloud Layer in meters, used to calculate the sun light attenuation. |
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| **Rotation** | The angle to rotate the **Cloud Layer** texture by, in degrees. |
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| **Tint** | The color HDRP uses to tint the clouds. |
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| **Exposure Compensation** | The exposure compensation of the clouds in EV relative to the main directional [Light](Light-Component.md). |
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| **Wind** | Specifies the method HDRP uses to simulate wind.<br />• **None**: No wind.<br />• **Horizontal**: HDRP distorts the clouds using a uniform horizontal wind direction.<br />• **Flowmap**: HDRP distorts the clouds using the **Flowmap** texture. |
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| - **Orientation** | The orientation of the wind relative to the X world vector (in degrees).<br />This value can be relative to the **Global Wind Orientation** defined in the **Visual Environment**. |
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| - **Speed** | The wind speed in kilometers per hour.<br />This value can be relative to the **Global Wind Speed** defined in the **Visual Environment**. |
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| - **Flowmap** | The flowmap HDRP uses to distort UVs when rendering the clouds. For more information about the flowmap, see [controlling cloud movement](create-simple-clouds-cloud-layer#controlling-cloud-movement).<br />This property only appears when you select **Flowmap** from the **Distortion** drop-down. |
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| **Raymarching** | Indicates whether HDRP calculates lighting for the clouds using the main directional light. When enabled, HDRP uses 2D raymarching on the Cloud Map to approximate self-shadowing from the sun light.<br /> The lighting computations are baked inside a texture and only recomputed when any of the relevant parameter changes. |
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| - **Steps** | The number of raymarching steps HDRP uses to calculate lighting for the clouds. The higher the value, the greater the travelled distance is. |
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| - **Density** | The density of the clouds. The larger the value, the darker the clouds will appear. |
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| - **Ambient Probe Dimmer** | Controls the influence of the ambient probe on the cloud layer volume. A lower value will suppress the ambient light and produce darker clouds overall. |
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| **Cast Shadows** | Indicates whether clouds cast shadows for the main directional light.<br/>This calculates the shadow texture and sets it as the light cookie for the main direction Light. |
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| Shadows Property | Description |
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| --------------------- | ------------------------------------------------------------ |
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| **Shadow Multiplier** | The opacity of the cloud shadows. The higher the value, the darker the shadows. |
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| **Shadow Tint** | The tint HDRP applies to the cloud shadows. |
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| **Shadow Resolution** | The resolution of the cloud shadows texture. |
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| **Shadow Size** | The size of the projected cloud shadows. |
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