59 lines
4.6 KiB
Markdown
59 lines
4.6 KiB
Markdown
# Displacement Mode
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This setting controls the method that the High Definition Render Pipeline (HDRP) uses to displace Materials.
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## Options
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The options in the **Displacement Mode** drop-down change depending on the Shader you use.
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### Lit Shaders
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| **Drop-down option** | **Description** |
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| ----------------------- | ------------------------------------------------------------ |
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| **None** | Select this option to apply no displacement to the Material. |
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| **Vertex displacement** | Select this option to displace the Mesh’s vertices according to the **Height Map**. |
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| **Pixel displacement** | Select this option to displace the pixels on the Mesh surface according to the **Height Map**. |
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### Tessellation Shaders
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| **Drop-down option** | **Description** |
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| ----------------------------- | ------------------------------------------------------------ |
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| **None** | Select this option to apply no displacement to the Material. |
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| **Tessellation displacement** | Select this option to displace the Mesh’s surface according to the **Height Map**. Tessellation Shaders subdivide the Mesh and add vertices according to the Material’s tessellation options. **Tessellation displacement** also affects these vertices. |
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## Properties
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### Surface Options
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#### Shared Properties
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| **Property** | **Description** |
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| ------------------------------------ | ------------------------------------------------------------ |
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| **Lock with object scale** | Enable the checkbox to alter the height of the displacement using the **Scale** of the **Transform**. This allows you to preserve the ratio between the amplitude of the displacement and the **Scale** of the **Transform**. |
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| **Lock with height map tiling rate** | Enable the checkbox to alter the amplitude of the displacement using the tiling of the **Height Map**. This allows you to preserve the ratio between the amplitude of the displacement and the scale of the **Height Map** Texture. |
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#### Pixel Displacement
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| **Property** | **Description** |
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| -------------------------- | ------------------------------------------------------------ |
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| **Minimum steps** | Use the slider to set the minimum number of Texture samples which Unity performs to process pixel displacement. |
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| **Maximum steps** | Use the slider to set the maximum number of Texture samples which Unity performs to process pixel displacement. |
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| **Fading mip level start** | Use the slider to set the mip level at which the pixel displacement effect begins to fade out. |
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| **Primitive length** | The length of the Mesh (in meters) on which Unity applies the displacement mapping. |
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| **Primitive width** | The width of the Mesh (in meters) on which Unity applies the displacement mapping. |
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| **Depth Offset** | Enable the checkbox to modify the depth buffer according to the displacement. This allows effects that use the depth buffer ([Contact Shadows](Override-Contact-Shadows.md) for example) to capture pixel displacement details. |
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### Surface Inputs
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#### Shared Properties
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| **Property** | **Description** |
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| --------------------- | ------------------------------------------------------------ |
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| **Height Map** | Assign a Texture that defines the heightmap for this Material. Unity uses this map to apply pixel or vertex displacement to this Material’s Mesh. |
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| **- Parametrization** | Use the drop-down to select the parametrization method for the to use for the **Height Map**.<br />•**Min/Max**: HDRP compares the **Min** and **Max** value to calculate the peak, trough, and base position of the heightmap. If the **Min** is -1 and the **Max** is 3, then the base is at the Texture value 0.25. This uses the full range of the heightmap.<br />•**Amplitude**: Allows you to manually set the amplitude and base position of the heightmap. This uses the full range of the heightmap. |
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| **- Min** | Set the minimum value in the **Height Map**. |
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| **- Max** | Set the maximum value in the **Height Map**. |
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| **- Offset** | Set the offset that HDRP applies to the **Height Map**. |
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| **- Amplitude** | Set the amplitude of the **Height Map**. |
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| **- Base** | Use the slider to set the base for the **Height Map**. |
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