Filter Forge - Lerp / Blend option in noise and pattern components

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Sphinx. Filter Optimizer Posts: 1344 Filters: 38	It is not always clear when FF uses a blending approach rather than a simple interpolation scheme. Patterns and noises use blending and gradients use lerp (interpolation). Also it is not given what actually IS the pragmatically correct approach - it depends on the actual construction. Sometimes blending is useful, other times lerping is useful and then mostly it doesn't matter since input colors are all opaque. Since lerping is cheaper itself (computationally, compared to blending) and is more simple which in most component cases makes it possible to skip fetching either "Foreground" or Background depending on the weight, I propose this option be added where applicable ("Use fast lerp"). Njyldgarkn sample cache!
	Posted: June 10, 2012 8:15 am	Details E-Mail
uberzev not uberfez Posts: 1821 Filters: 36	I've noticed that chaining thresholds is pretty much the fastest way to blend multiple layers in certain situations. Not sure if that has to do with what your saying...
	Posted: June 10, 2012 9:05 am	Details E-Mail
Sphinx. Filter Optimizer Posts: 1344 Filters: 38	Well, it is kind of related. The Threshold is infact using that optimization opportunity I'm talking about. What you're doing sounds like a Clipping Tree variation.. Njyldgarkn sample cache!
	Posted: June 10, 2012 9:29 am	Details E-Mail