What are the different precomputation modes?ġ.
This means that if you are rendering a fly-through animation with no moving objects or lights, it is fine to render the cache only once for the whole scene, without having to repeat the cache rendering for small areas separated from each other, such as multiple rooms in a large house. Note: without getting too technical, we can assume that the UHD Cache is not camera-dependent and that is is always generated for the whole scene. However, it is usually required to use UHD Cache settings adequate to the current scenario. The UHD Cache may be used for both still images and animations, even with moving geometry or light sources. In such scenarios it greatly improves render speed at the cost of subtle bias. interiors, scenes with many light bounces). UHD Cache - slightly biased, cached solution, which speeds up rendering - should be used (but doesn't have to) as the secondary GI solver in scenes where GI is dominant (e.g. As a secondary GI solver, it is useful mainly in exterior scenes, where UHD Cache would require longer precomputation times and wouldn't be able to improve rendering speed.Ģ. Path Tracing - unbiased solution - should always be used as a primary GI solver. Corona Renderer offers two kinds of GI solvers which can work together:ġ. The UHD Cache is a global illumination solver. See also: How to fix flickering in animations? Its cached solution, called “UHD Cache”, is significantly faster than plain path tracing, but does not suffer from artifacts, missing contact shadows, or complicated UI controls.
Traditionally, users had to choose to either use unbiased algorithms without any caching and wait long time for all renders, or use biased caching algorithms, and deal with splotches, missing shadows, and sensitive input parameters. Old youtube tutorial (Corona 1.4): QUICK TIP: Saving the UHD Cache
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