WebGLBatch Class
A WebGLBatch Enables a group of sprites to be drawn using the same settings. if a group of sprites all have the same baseTexture and blendMode then they can be grouped into a batch. All the sprites in a batch can then be drawn in one go by the GPU which is hugely efficient. ALL sprites in the webGL renderer are added to a batch even if the batch only contains one sprite. Batching is handled automatically by the webGL renderer. A good tip is: the smaller the number of batchs there are, the faster the webGL renderer will run.
Constructor
WebGLBatch
    
        - 
                    
                        
gl 
Parameters:
- 
                    
                        
glWebGLContextan instance of the webGL context
 
Item Index
Methods
- addDisplayObjectAndChildren
 - addFilterBlocks
 - clean
 - growBatch
 - init
 - initStrip
 - initTilingSprite
 - insertAfter
 - insertAfter
 - insertBefore
 - insertObject
 - merge
 - refresh
 - remove
 - removeDisplayObjectAndChildren
 - removeFilterBlocks
 - removeObject
 - render
 - render
 - renderSpecial
 - renderSpecific
 - renderStrip
 - renderTilingSprite
 - restoreLostContext
 - setRenderable
 - split
 - update
 - updateTexture
 
Methods
addDisplayObjectAndChildren
    
        - 
                    
                        
displayObject 
Adds a display object and children to the webgl context
Parameters:
- 
                    
                        
displayObjectDisplayObject 
addFilterBlocks
    
        - 
                    
                        
start - 
                    
                        
end 
Adds filter blocks
Parameters:
- 
                    
                        
startFilterBlock - 
                    
                        
endFilterBlock 
clean
    
        ()
    
    
    
    
    
    
    
    
    
    Cleans the batch so that is can be returned to an object pool and reused
growBatch
    
        ()
    
    
    
    
    
    
    
    
    
    Grows the size of the batch. As the elements in the batch cannot have a dynamic size this function is used to increase the size of the batch. It also creates a little extra room so that the batch does not need to be resized every time a sprite is added
init
    
        - 
                    
                        
sprite 
inits the batch's texture and blend mode based if the supplied sprite
Parameters:
- 
                    
                        
spriteSpritethe first sprite to be added to the batch. Only sprites with the same base texture and blend mode will be allowed to be added to this batch
 
initStrip
    
        - 
                    
                        
strip 
Initializes a strip to be rendered
Parameters:
- 
                    
                        
stripStripThe strip to initialize
 
initTilingSprite
    
        - 
                    
                        
sprite 
Initializes a tiling sprite
Parameters:
- 
                    
                        
spriteTilingSpriteThe tiling sprite to initialize
 
insertAfter
    
        - 
                    
                        
item - 
                    
                        
displayObject 
Inserts a displayObject into the linked list
Parameters:
- 
                    
                        
itemDisplayObject - 
                    
                        
displayObjectDisplayObjectThe object to insert
 
insertAfter
    
        - 
                    
                        
sprite - 
                    
                        
previousSprite 
inserts a sprite after the specified sprite
insertBefore
    
        - 
                    
                        
sprite - 
                    
                        
nextSprite 
inserts a sprite before the specified sprite
Parameters:
- 
                    
                        
spriteSpritethe sprite to be added
 - 
                    
                        
nextSpriteNextSpritethe first sprite will be inserted before this sprite
 
insertObject
    
        - 
                    
                        
displayObject - 
                    
                        
previousObject - 
                    
                        
nextObject 
Inserts a displayObject into the linked list
Parameters:
- 
                    
                        
displayObjectDisplayObject - 
                    
                        
previousObjectDisplayObject - 
                    
                        
nextObjectDisplayObject 
merge
    
        - 
                    
                        
batch 
Merges two batchs together
Parameters:
- 
                    
                        
batchWebGLBatchthe batch that will be merged
 
refresh
    
        ()
    
    
    
    
    
    
    
    
    
    Refresh's all the data in the batch and sync's it with the webGL buffers
remove
    
        - 
                    
                        
sprite 
removes a sprite from the batch
Parameters:
- 
                    
                        
spriteSpritethe sprite to be removed
 
removeDisplayObjectAndChildren
    
        - 
                    
                        
displayObject 
Removes a display object and children to the webgl context
Parameters:
- 
                    
                        
displayObjectDisplayObject 
removeFilterBlocks
    
        - 
                    
                        
start - 
                    
                        
end 
Remove filter blocks
Parameters:
- 
                    
                        
startFilterBlock - 
                    
                        
endFilterBlock 
removeObject
    
        - 
                    
                        
displayObject 
Removes a displayObject from the linked list
Parameters:
- 
                    
                        
displayObjectDisplayObjectThe object to remove
 
render
    
        ()
    
    
    
    
    
    
    
    
    
    Draws the batch to the frame buffer
render
    
        - 
                    
                        
projection 
Renders the stage to its webgl view
Parameters:
- 
                    
                        
projectionObject 
renderSpecial
    
        - 
                    
                        
renderable - 
                    
                        
projection 
Renders a specific renderable
Parameters:
- 
                    
                        
renderableDisplayObject - 
                    
                        
projectionObject 
renderSpecific
    
        - 
                    
                        
displayObject - 
                    
                        
projection 
Renders a specific displayObject
Parameters:
- 
                    
                        
displayObjectDisplayObject - 
                    
                        
projectionObject 
renderStrip
    
        - 
                    
                        
strip - 
                    
                        
projection 
Renders a Strip
Parameters:
- 
                    
                        
stripStripThe strip to render
 - 
                    
                        
projectionObject 
renderTilingSprite
    
        - 
                    
                        
sprite - 
                    
                        
projectionMatrix 
Renders a TilingSprite
Parameters:
- 
                    
                        
spriteTilingSpriteThe tiling sprite to render
 - 
                    
                        
projectionMatrixObject 
restoreLostContext
    
        - 
                    
                        
gl 
Recreates the buffers in the event of a context loss
Parameters:
- 
                    
                        
glWebGLContext 
setRenderable
    
        - 
                    
                        
displayObject 
Add a display object to the webgl renderer
Parameters:
- 
                    
                        
displayObjectDisplayObject 
split
    
        - 
                    
                        
sprite 
Splits the batch into two with the specified sprite being the start of the new batch.
Parameters:
- 
                    
                        
spriteSpritethe sprite that indicates where the batch should be split
 
Returns:
the new batch
update
    
        ()
    
    
    
    
    
    
    
    
    
    Updates all the relevant geometry and uploads the data to the GPU
updateTexture
    
        - 
                    
                        
displayObject 
Updates a webgl texture
Parameters:
- 
                    
                        
displayObjectDisplayObject 
