Update what's new

dist/preview release/what's new.md

@@ -16,7 +16,10 @@
     - Introduced Canvas2D feature: a 2D engine to render primitives, sprites in 2D, text. Canvas2D can be displayed in Screen Space (above the 3D scene) or in World Space to be a part of the Scene. [overview](http://doc.babylonjs.com/overviews/Using_The_Canvas2D), [tutorial](http://doc.babylonjs.com/tutorials/Using_the_Canvas2D) ([nockawa](https://github.com/nockawa))
     - Added two new types of Texture: FontTexture and MapTexture ([quick doc](http://www.html5gamedevs.com/topic/22565-two-new-texture-types-fonttexture-and-maptexture/)) ([nockawa](https://github.com/nockawa))
     - Added a dynamic [2D Bin Packing Algorithm](http://stackoverflow.com/questions/8762569/how-is-2d-bin-packing-achieved-programmatically), ([more info here](http://www.html5gamedevs.com/topic/22565-two-new-texture-types-fonttexture-and-maptexture/)) ([nockawa](https://github.com/nockawa))
-    - Physics engine was completely rewritten, including both plugins for Oimo.js and Cannon.js. [overview](http://doc.babylonjs.com/overviews/Using_The_Physics_Engine) ([RaananW](https://github.com/RaananW))	
+    - Physics engine was completely rewritten, including both plugins for Oimo.js and Cannon.js. [overview](http://doc.babylonjs.com/overviews/Using_The_Physics_Engine) ([RaananW](https://github.com/RaananW))
+	- Interleaved buffers are now directly supported. Create a `Buffer` object and then use `buffer.createVertexBuffer` to specify the vertex buffers ([benaadams](https://github.com/benaadams)) 
+	- Vertex buffers can be marked as instanced to allow custom instancing attributes ([benaadams](https://github.com/benaadams)) 
+	- Mesh can have `overridenInstanceCount` set to specify the number of meshes to draw when custom instancing is used ([benaadams](https://github.com/benaadams)) 
   - **Updates**
     - Added `mesh.toLefthanded()` to convert a mesh from right handed system ([kesshi](https://github.com/Kesshi))
     - Renderlists can now also be defined using predicates ([deltakosh](https://github.com/deltakosh))
@@ -48,6 +51,8 @@
     - LensFlareSystem now has both ID and name  ([RaananW](https://github.com/RaananW))
     - TargetCamera has now a rotationQuaternion variable to can be used to set the camera's rotation  ([RaananW](https://github.com/RaananW))
     - SSAORenderingPipeline now uses bilateral blur post-processes instead of standard blur post-process, in order to remove more efficiently the "textile effect"
+    - `Engine.updateDynamicVertexBuffer` now has optional count as well as offset to allow partial updates ([benaadams](https://github.com/benaadams)) 
+    - vertex attributes are only disabled if they aren't going to be reeabled by the next draw, to reduce gpu state changes ([benaadams](https://github.com/benaadams)) 
   - **Exporters**
     - Unity3D exporter: Added support for lightmaps ([davrous](https://github.com/davrous), [deltakosh](https://github.com/deltakosh))
     - Unity3D exporter: Added support for export and run (local webserver) ([davrous](https://github.com/davrous), [deltakosh](https://github.com/deltakosh))
@@ -70,3 +75,7 @@
     - `scene.onNewXXXAdded` and `scene.onXXXRemoved` callbacks were removed and replaced by `scene.onNewXXXAddedObservable` and `scene.onXXXRemovedObservable`
     - `Material.dispose` does not dispose textures by default. You have to call `material.dispose(false, true)` to get the previous behavior.
     - `SSAORenderingPipeline.getBlurHPostProcess` and `SSAORenderingPipeline.getBlurVPostProcess`. The SSAO rendering pipeline doesn't use standard blur post-process anymore. A bilateral blur post-process is used instead.
+    - `Engine.bindBuffers` is now `Engine.bindBuffersDirectly` ([benaadams](https://github.com/benaadams))
+    - `Engine.bindMultiBuffers` is now `Engine.bindBuffers` and strongly typed `{ [key: string]: VertexBuffer; }` of buffers ([benaadams](https://github.com/benaadams))
+    - `Engine.createDynamicVertexBuffer` takes vertices rather than capacity, creating and initalizing in one gpu instruction ([benaadams](https://github.com/benaadams)) 
+    - Internally new `Engine.bindBuffer` is used rather than `gl.bindBuffer` which only binds when the bound buffer is changing ([benaadams](https://github.com/benaadams))