The display object the filter is currently attached to.
The bounds of the target object (plus padding) in stage coordinates.
Gets a pass texture from the pool, or creates a new one (cleared and ready to be used as render target). Its size is dictated by the bounds of the target display object plus padding.
Beware: each call of this method counts as one render pass. For performance reasons,
the filter may be configured to render the last pass directly to the back buffer. In
that case, this method will return null for the last pass! That's the
sign for the process method to draw to the back buffer. If you receive
null too soon, the filter class probably didn't correctly override
numPasses.
Puts a texture back into the pool to be reused later (or to be disposed with the pool).
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An interface describing the methods available on the
helperobject passed to theprocesscall of fragment filters. It provides information about the target object and methods to acquire and release pass textures.@see FragmentFilter#process()