[UPDATE] Added *Impostor Texture ROP* Docs

Author: Ambrosiussen

Help/nodes/out/gamedev--rop_impostor_texture.txt

@@ -0,0 +1,54 @@
+= GameDev Impostor Texture =
+
+#type: node
+#context: sop
+#internal: gamedev::rop_impostor_texture
+#icon: impostortexture
+#tags: tech, model
+
+""" The impostor tool creates texture sheets to fake 3D objects in your game engine. """
+
+The impostor tool creates texture sheets to fake 3D objects in your game engine.  The tool will create full octahedral, 3D, fixed axis and animated impostors.  Below is a short video showing how to setup the tool in Houdini.
+[https://www.sidefx.com/tutorials/game-tools-imposter-textures/]
+
+@parameters
+    Render:
+        Pressing this button will render the impostor to disk.
+    == Base Settings ==
+    Render in One Image:
+        When this toggle is enabled, all frames of the impostor texture are generated with a lens shader instead of on a per frame basis.
+    Impostor Type:
+        This allows you to set the impostor type that has to be generated.
+    Source Geometry:
+        This needs to point to the geometry that should be rendered as an impostor.
+    Camera Rig:
+        This needs to point to an OBJ level camera rig.
+    Sprite Resolution:
+        This sets the sprite resolution. (Ex: If you have 8x8 frames at 128x128 pixels, this means a combined 1024x1024 pixel texture)
+    XY Frames:
+        Sets the number of XY frames that need to be generated for the impostor texture.
+    Atlas Resolution:
+        When Impostor Type is set to Octahedron, this controls the overall impostor texture resolution.
+    Octahedron Zoom:
+        This controls the camera zoom amount for the Octahedron impostor camera lens.
+    Animation Frames:
+        When Impostor Type is set to Animation, this controls how many frames you want to encode in the impostor.
+    Output Picture:
+        This specifies where the output texture will be saved.
+    Output Geo:
+        This specifies where the geometry generated for the Octahedral Impostor needs to be saved.
+    == Atlas ==
+    Pre Multiply:
+        This controls if the basecolor/beauty map alpha channel should be premultiplied.
+    Beauty Map:
+        Enables/Disables the generation of the Beauty Atlas for the impostor.
+    Beauty Atlas:
+        This specifies where the Beauty Atlas should be saved to.
+    Base Color Map:
+        Enables/Disables the generation of the Base Color Atlas for the impostor.
+    Base Color Atlas:
+        This specifies where the Base Color Atlas should be saved to.
+    Normals Map:
+        Enables/Disables the generation of the Normal Atlas for the impostor.
+    Normals Atlas:
+        This specifies where the Normal Atlas should be saved to.