Apply a set of filters against a source image and draw the filtered output to the provided destination canvas.
The filter to apply.
The source to be filtered.
The width of the source input.
The height of the source input.
The destination for filtered output to be drawn.
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Experimental. This object is a sort of repository of help layers used to avoid of recreating them during frequent filtering. If you are previewing a filter with a slider you probably do not want to create help layers every filter step. in this object there will be appended some canvases, created once, resized sometimes cleared never. Clearing is left to the developer.