Master Nodes:主節點
PBR Master：用於基於物理的渲染的主節點。可以使用在金屬（Metallic ）或高光（Specular）工作流模式下定義的工作流下拉參數。
默認情況下，Shader Graph期望您提供給輸入法線的值位於切線空間中。使用Transform節點將值轉換爲切線空間，或使用Material選項中的Fragment Normal space下拉菜單將預期的座標空間更改爲Object或World。
| Name | Direction | Type | Stage | Binding | Description |
|---|---|---|---|---|---|
| Position | Input | Vector 3 | Vertex | None | Defines the absolute object space vertex position per vertex. |
| Albedo | Input | Vector 3 | Fragment | None | Defines material's albedo value. Expected range 0 - 1. |
| Normal | Input | Vector 3 | Fragment | Tangent Space Normal | Defines material's normal value. Expects normals in tangent space. |
| Emission | Input | Vector 3 | Fragment | None | Defines material's emission color value. Expects positive values. |
| Metallic | Input | Vector 1 | Fragment | None | Defines material's metallic value where 0 is non-metallic and 1 is metallic. Only available in Metallic Workflow mode. |
| Specular | Input | Vector 3 | Fragment | None | Defines material's specular color value. Expected range 0 - 1. Only available in Specular Workflowmode. |
| Smoothness | Input | Vector 1 | Fragment | None | Defines material's smoothness value. Expected range 0 - 1. |
| Occlusion | Input | Vector 1 | Fragment | None | Defines material's ambient occlusion value. Expected range 0 - 1. |
| Alpha | Input | Vector 1 | Fragment | None | Defines material's alpha value. Used for transparency and/or alpha clip. Expected range 0 - 1. |
| Alpha Clip Threshold | Input | Vector 1 | Fragment | None | Fragments with an alpha below this value will be discarded. Requires a node connection. Expected range 0 - 1. |
| Name | Type | Options | Description |
|---|---|---|---|
| Workflow | Dropdown | Metallic, Specular | Defines workflow mode for the material. |
| Surface | Dropdown | Opaque, Transparent | Defines if the material is transparent. |
| Blend | Dropdown | Alpha, Premultiply, Additive, Multiply | Defines blend mode of a transparent material. |
| Fragment Normal Space | Dropdown | Tangent, Object, World | Defines the coordinate space of the value supplied to the Normal slot. |
| Two Sided | Toggle | True, False | If true, both front and back faces of the mesh are rendered. |
Unlit Master：用於不受光照影響的材質的主節點。
| Name | Direction | Type | Stage | Binding | Description |
|---|---|---|---|---|---|
| Position | Input | Vector 3 | Vertex | None | Defines the absolute object space vertex position per vertex |
| Color | Input | Vector 3 | Fragment | None | Defines material's color value. Expected range 0 - 1. |
| Alpha | Input | Vector 1 | Fragment | None | Defines material's alpha value. Used for transparency and/or alpha clip. Expected range 0 - 1. |
| Alpha Clip Threshold | Input | Vector 1 | Fragment | None | Fragments with an alpha below this value will be discarded. Requires a node connection. Expected range 0 - 1. |
| Name | Type | Options | Description |
|---|---|---|---|
| Surface | Dropdown | Opaque, Transparent | Defines if the material is transparent |
| Blend | Dropdown | Alpha, Premultiply, Additive, Multiply | Defines blend mode of a transparent material |
| Two Sided | Toggle | True, False | If true both front and back faces of the mesh are rendered |