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The first variation is the GPUdriven denoiser (which requires compatible hardware described below). It's an AddOn available with V2.12 and beyond (and as with all AddOns, it requires Twilight Render Pro and a separately purchased license).Īs of Twilight Render Pro 2.14.11, there are 2 variations of Denoiser that can accomodate a variety of hardware configurations one for GPU and one for CPU. If that last 10% of noise takes 90% of our render time, then if the denoiser can remove that last 10% of noise (or better!) for us, that could save us 90% of our render time! Now obviously every scene is different and expecting a 90% reduction in render time is probably optimistic, but if our denoiser can cut render time in half that would be a huge improvement.įastForward is Twilight Render's integration of a denoiser for Twilight Render Pro. And the advantage of using a denoiser can be invaluable. This is something so inherent in unbiased rendering, affecting basically every unbiased render engine on the market, that a second piece of software has become almost as commonplace as image render, and that is the Denoiser.ĭenoisers may be integrated directly into the renderer or they may be third party products that work on completed renders, but they all do the same thing: they remove unwanted render noise to produce a cleaner image. That last 10% of noise reduction seems to take about 90% of the time! But within a few iterations, the noise reduction slows. And in the early stages, the noise reduction moves along at a fairly quick pace. These produce initial images very quickly, that grainy preview of what is to come. If you've used Twilight Render for any length of time, you are probably familiar with the unbiased methods in the Interior and Interior+ render presets. Unbiased methods are more physically accurate and have fewer limitations or mathematical flaws, but require much more time to produce a noise free image. Biased methods are typically faster and produce cleaner results but impose limitations (like material emitters), can suffer from certain mathematical problems (like light-leaks), and are less physically accurate because they are based on assumptions and shortcuts. Different tools for different purposes, each method has its strengths and weaknesses. One of the great features of Twilight Render is the availability of both biased and unbiased rendering methods. The FastForward Denoising AddOn for PC and MAC
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