V-Ray for Rhino Manual - Rum

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Another important option with Light Cache is the Sample Size. This is used to determine the size of each sample. A smaller number will yield more detail and a sharper image, where a larger number will loose some detail but have a smoother result. With each of these images the primary and secondary bounces are calculated with Light Cache. The images on the left has a sample size of .02 and the images on the left has a size of .03. With both cases the top image is the result at the end of the Light Cache calculation and the bottom image is the rendered result. It is important to note that Light Cache is not appropriate to be used for primary bounces, as it does not produce smooth results or good details. It is only being used as a primary bounce in this case to illustrate the difference in sample size Scale in Light Cache In order to determine the size of each sample, Light Cache gives itself a scale to work with. The default setting for scale is Screen. This means that each sample is a percentage of the image. The default value is .02, or 2 percent. Which means that the size of each sample is approximately 2 percent of the total image. It is possible to use the scene units to determine the size of the samples. To do this change the scale to World, and now the sample size is in scene units. The advantage to using screen units over world units is that with screen units more samples will be added to objects which are in the foreground of the image. With world units many samples will be added to objects far away, while objects which are closer to the camera will receive fewer samples. Because of this issue it is recommended to keep the scale at the default value of screen. 72 V-Ray for Rhino
Lighting Dialog Box Below are all light types' details supported by V-Ray. Each light's content is different. Other then color, multiplier and shadow on/off, each also has Subdivs for shadow quality control, Photon Map for render quality control, Caustic Subdivs control and Bias for shadow offset. The difference is only with Directional Light, Point Light and Spotlight which have the ability to adjust the radius of shadows. Point Light and Spotlight are the ones need to control the Decay itself: Linear, Inverse and Inverse Square. The last two Decay dramatically. So when using Inverse or Inverse Square, you must increase the multiplier. That means Point Light and Spotlight are very much affected by the distance from an object, so it will take longer time to adjust these two lights. Rectangular Light Directional Light Point Light Spotlight V-Ray for Rhino 73
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A R E N D E R I N G P L U G I N F O
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Transparency Mapping...............
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Installing V-Ray for Rhino 1. Make
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Before you start rendering with V-R
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Render Options for V-Ray for Rhino
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The image is in blue tone is becaus
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Material Editor in V-Ray for Rhino
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How to duplicate a material: Under
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Material Usage 01. Open Cups-GI.3dm
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Add Lights We didn't add any light
Page 22 and 23: Here are some images with different
Page 24 and 25: Impacts on reflective objects due t
Page 26 and 27: Material: Reflection Layer This sec
Page 28 and 29: Fresnel Reflections Fresnel Reflect
Page 30 and 31: Fresnel IOR Reflection Glossiness C
Page 32 and 33: 3. Click on the Update Preview agai
Page 34 and 35: Adjusting Refractions with Index of
Page 36 and 37: Image below shows the influence of
Page 38 and 39: Check the Translucent box under Tra
Page 40 and 41: Adjust the Intensity Default set th
Page 42 and 43: Please note that if any type of map
Page 44 and 45: 03. Click on the “m” to the rig
Page 46 and 47: Projection types and adjustment The
Page 48 and 49: Image on the left is result of usin
Page 50 and 51: Adjusting Displacement Depending on
Page 52 and 53: 1. Click on the cup and open its Ma
Page 54 and 55: Other Uses for transparency mapping
Page 56 and 57: V-Ray Two-Sided Material The V-Ray
Page 58 and 59: Environment Lighting Lighting plays
Page 60 and 61: Techniques for adjusting illuminati
Page 62 and 63: To compare, below are three images
Page 64 and 65: Environment light source for semi-o
Page 66 and 67: Choosing different Render Engines I
Page 68 and 69: Image on the left is showing the la
Page 70 and 71: Primary Engine: Quasi Monte-Carlo Q
Page 74 and 75: Light and Shadow The quality of Sha
Page 76 and 77: Depth of Field What's Depth of Fiel
Page 78 and 79: Below are some images showing more
Page 80 and 81: Using Aperture When using aperture
Page 82 and 83: Sun and Sky The V-Ray Sun and Sky a
Page 84 and 85: Changin the Sun’s Appearance with
Page 86 and 87: Caustics What are Caustics? Caustic
Page 88 and 89: Color Mapping The Function of Color
Page 90 and 91: Mesh Settings In order for geometry
Page 92 and 93: V-Ray Frame Buffer Render image win
Page 94 and 95: Starting the DR Spawner Once the DR
Page 96 and 97: Chocolate Crystal Eggshell Emmisive
Page 98 and 99: Metal - Car Paint_Red Metal - Chrom
Page 100 and 101: 100 V-Ray for Rhino
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V-Ray for Rhino Manual - Rum

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