destroy() Destroys the filter and removes it from the filter stack. Source code:

initShaderBuffers() Initialises the shader buffers. Source code:

applyFilterPass(filter, filterArea, width, height) Applies the filter to the specified area. Parameters

setContext(gl) Initialises the context and the properties. Parameters

offsetY : number Source code:

offsetX : number Source code:

begin(renderSession, buffer) Parameters Name Type Description

pushFilter(filterBlock) Applies the filter and adds it to the current filter stack. Parameters

filterStack : Array Source code:

popFilter() Removes the last filter from the filter stack and doesn't return it. Source