Vfx/docs/new operator docs (#50)

* Added documentation for new operators

* Changed bullet format.

Author: Lewis Jordan

com.unity.visualeffectgraph/Documentation~/Operator-GetTextureDimensions.md

@@ -0,0 +1,34 @@
+# Get Texture Dimensions
+
+Menu Path : **Operator > Sampling > Get Texture Dimensions**
+
+The Get Texture Dimensions Operator allows you to get the dimensions of a given texture.
+
+This Operator handles every supported texture type in the Visual Effect Graph. It infers the input type automatically when you attach a texture to the input property. You can also manually specify the input type in the [Operator configuration](#operator-configuration).
+
+## Operator properties
+
+| **Input** | **Type**                                 | **Description**                         |
+| --------- | ---------------------------------------- | --------------------------------------- |
+| **Tex**   | [Configurable](#operator-configuration). | The texture to get the dimensions from. |
+
+| **Output** | **Type** | **Description**                                              |
+| ---------- | -------- | ------------------------------------------------------------ |
+| **width**  | uint     | The width of the texture.                                    |
+| **height** | uint     | The height of the texture.                                   |
+| **depth**  | uint     | The depth of the texture 3D (for Texture3D types only).      |
+| **count**  | uint     | The layer count in the texture array (for Texture2DArray and TextureCubeArray only). |
+
+## Operator configuration
+
+To view the Operator's configuration, click the **cog** icon in the Operator's header. Use the drop-down to select the type for the **Tex** port. For the list of types this property supports, see [Available types](#available-types).
+
+### Available types
+
+All types of textures are available for your **Texture** ports:
+
+- **Texture2D**
+- **Texture3D**
+- **Texture2DArray**
+- **TextureCube**
+- **TextureCubeArray**

com.unity.visualeffectgraph/Documentation~/Operator-Transform(Vector4).md

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+# Transform (Vector4)
+
+Menu Path : **Operator > Math > Geometry > Transform (Vector4)**
+
+The **Transform (Vector4)** Operator applies a transformation to a Vector4.
+
+## Operator properties
+
+| **Input**     | **Type**  | **Description**                                    |
+| ------------- | --------- | -------------------------------------------------- |
+| **Transform** | Transform | The Transform this Operator applies to the Vector. |
+| **Vec**       | Vector4   | The Vector4 this Operator transforms.              |
+
+| **Output** | **Type** | **Description**          |
+| ---------- | -------- | ------------------------ |
+| **tVec**   | Vector4  | The transformed Vector4. |

com.unity.visualeffectgraph/Documentation~/TableOfContents.md

@@ -27,5 +27,13 @@
   * [Point Cache Bake Tool](PointCacheBakeTool.md)
   * [Spawner Callbacks](SpawnerCallbacks.md)
   * [Mesh Sampling](MeshSampling.md)
+* Node Library
+  * Context
+  * Operator
+    * Math
+      * Geometry
+        * [Transform (Vector4)](Operator-Transform(Vector4).md)
+    * Sampling
+      * [Get Texture Dimensions](Operator-GetTextureDimensions.md)
 * Reference
   * [Standard Attributes](Reference-Attributes.md)