So in order to reduce noise, you need to provide V-Ray with more information - and to provide V-Ray with more information, you need to take more samples. Noise present in a render means that V-Ray wasn't able to gather enough information about what's going on in a scene. This is because Noise is caused by a lack of information. The more a scene gets sampled, the more information V-Ray is able to gather about the scene, and the higher quality the resulting render will be - which means less Noise in the render. In order to accurately figure out what's going on in a scene, many Primary and Secondary Samples are needed to be taken. If you already know the underlying concepts and just want the technical step-by-step procedure, click here to skip right to it.įrom this point forward, we'll simply refer to 'Rays' as 'Samples' - because that's what the purpose of a Ray is - to take a Sample of a scene to gather information about what's going on in it. And finally I'll provide a step-by-step procedure to optimize any scene to render with an ideal balance of quality and speed.
Vray for rhino number of light bounces how to#
Then we'll learn how to identify the different sources of noise a scene can have. Then we'll go over an example scene to demonstrate exactly how a render can be optimized to be faster and cleaner. We'll first cover some of the underlying concepts behind how ray tracing and V-Ray's sampling works. But with a bit of understanding of how V-Ray works under the hood, you can achieve a higher quality result WITH faster render times - in some extreme cases ranging between 3x faster to 13x faster than the universal settings. Many times you'll see artists adopt the 'Universal V-Ray Settings' of having the Image Sampler (Anti-Aliasing, or AA) Max Subdivs value set very high (like 50 or 100), and then simply lowering the noise threshold value until the render becomes clean enough - thinking that it's the best / fastest that V-Ray can do. There's often a lot of confusion surrounding V-Ray's sampling methods and what 'ideal' settings are. Unless you take steps to stop it, your Rhino Rectangle light will not only illuminate your V-Ray scene, it will appear (as a rectangle) in that scene! To prevent this from happening, place the light on a layer that is not visiblel, but set the rendering options to include hidden lights.This tutorial attempts to cover the process of optimizing your V-Ray render settings to get the best possible render quality and fastest render time for a given scene. It will only render correctly in one of the rendering plug-ins, as it is harder to render, and it will produce soft shadows and illumination.Īrea lights may emit light from only one side, or from both. Rectangular LightsĪ rectangle light is, as the name suggests, a glowing area of light in the scene, similar to a recessed flourescent ceiling fixture or an indirectly illuminated window. It will only render correctly in one of the rendering plug-ins, as it is harder to render, and it will produce soft shadows and illumination. Linear LightsĪ linear light is, as the name suggests, a glowing line of light in the scene, similar to a flourescent bulb. Again, good ways to light an object, but not so useful if the light is meant to originate at a fixture in the scene. In addition to BounceLight, Rhino has a variety of light-positioning options which use existing cameras or current views to (re)position lights. Rhino then constructs (or moves) a spot light to shine into the model from a point along that normal, and targets it to the point on the surface you indicated. By selecting an object in the scene and a position on the object, you provide Rhino with the information needed to identify a surface normal. This is a novel way of positioning a regular spotlight. Rhino includes distant, point, and spot lights. TAPESTRY: The Art of Representation and Abstraction Rhino + V-Ray: Lighting
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