mental ray Architectural and Design Visualization Shader Library

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60 2 Architectural MaterialEach have advantages and disadvantages, but the one we will try here is the last one. Thereason for choosing this method is that it works well together with interpolation.1. Create a map for the “brush streaks”. There are many ways to do this, either by paintinga map in a paint program, or by using a “Noise” map that has been stretched heavilyin one direction.2. The map should vary between middle-gray and white. Apply this map to the refl colorin a scale suitable for the brushing.3. Set diffuse to white (or the color of the metal) but set diffuse weight to 0.0 (or a smallvalue).4. Make sure refl is metal is enabled.5. Set refl gloss to 0.75.6. Set anisotropy to 0.1 or similar. Use anisotropy rotation to align the highlightproperly with the map. If necessary use anisotropy channel to base it on the sametexture space as the map.Brushed Metal
Chapter 3Sun and Sky3.1 IntroductionThe mental ray physical sun & sky shaders are designed to enable physically plausible daylightsimulations and very accurate renderings of daylight scenarios.3.1.1 Analysis useThe shader library provides tools for lighting analysis. A shader for the standard CIE skymodel (both clear and overcast) is available. This shader is grayscale (no color) and intendedfor analysis purposes rather than generating visually pleasing images. See page 70 for details.The mia physicalsky shader supports analysis related parameters from the Perez sky model,as well as explicit illuminance parameter for the mia physicalsun.3.1.2 General overviewThe mia physicalsun and mia physicalsky are intended to be used together, with themia physicalsun shader applied to a directional light that represents the sun light, and themia physicalsky shader used as the scenes camera environment shader. The environmentshader should be used to illuminate the scene with the help of Final Gathering (which mustbe enabled) and bounced light from the sun can be handled either by final gather diffusebounces, or via GI (photons).For improving quality in indoor shots, the sky can be combined with the mia portal lightshader described on page 71.
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mental ray Architectural and Design
Page 3 and 4:
Table of Contents1 Introduction 11.
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Table of Contentsix3.8.3 Examples .
Page 9 and 10:
Chapter 2Architectural Material2.1
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2.2 Fundamentals 52.2.1.1 A Note on
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2.3 Features 7Hence, when using GI:
Page 15 and 16: 2.3 Features 9The rules are as foll
Page 17 and 18: 2.3 Features 11In the real world
Page 19 and 20: 2.3 Features 13Used alone, an AO sh
Page 21 and 22: 2.3 Features 152.3.7 Performance Fe
Page 23 and 24: 2.4 Quick Guide to the Material Par
Page 25 and 26: 2.5 Detailed Description of Materia
Page 55 and 56: 2.6 Tips and Tricks 49• For extre
Page 57 and 58: 2.6 Tips and Tricks 51Diagram for g
Page 59 and 60: 2.6 Tips and Tricks 53There is one
Page 61 and 62: 2.6 Tips and Tricks 55• Glass-Liq
Page 63 and 64: 2.6 Tips and Tricks 57Enjoy the tro
Page 65: 2.6 Tips and Tricks 59Many small ad
Page 69 and 70: 3.4 Common Parameters 633.3 Importa
Page 71 and 72: 3.5 Sun Parameters 65• saturation
Page 73 and 74: 3.6 Sky Parameters 67light"sun",# T
Page 75 and 76: 3.6 Sky Parameters 69• sun direct
Page 77 and 78: 3.8 Sky- and Environment Portals 71
Page 89 and 90: 3.9 Photometric Lights 833.9 Photom
Page 91: 3.9 Photometric Lights 85• When i
Page 94 and 95: 88 4 Camera- and Exposure EffectsAl
Page 96 and 97: 90 4 Camera- and Exposure Effects4.
Page 98 and 99: 92 4 Camera- and Exposure Effects1,
Page 100 and 101: 94 4 Camera- and Exposure EffectsTh
Page 102 and 103: 96 4 Camera- and Exposure Effectscr
Page 104 and 105: 98 4 Camera- and Exposure EffectsEv
Page 106 and 107: 100 4 Camera- and Exposure EffectsS
Page 109 and 110: Chapter 5General Utility Shaders5.1
Page 111 and 112: 5.2 Environment Blur 105replaced by
Page 113 and 114: 5.2 Environment Blur 107But what is
Page 115 and 116: 5.2 Environment Blur 109Glossiness
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5.3 Light Surface 111An example of
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5.3 Light Surface 113the other two
Page 121 and 122:
5.3 Light Surface 115Complex geomet
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5.3 Light Surface 117Another exampl
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mental ray Architectural and Design Visualization Shader Library

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