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Lighting with v ray for sketch up – definitive guide part 2 -_ sketchup 3d rendering tutorials by sketchupartists

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This document provides a tutorial on using emissive materials in V-Ray for SketchUp renderings. It begins by explaining what emissive materials are and how to access the emissive layer in V-Ray materials. Examples are shown of using different intensity levels of emissive materials. The document also demonstrates how to reduce blotchiness by increasing subdivision levels. Combining emissive lighting with image-based lighting using an HDRI is also covered. Additional examples show using bitmaps for emissive lighting effects like on a TV screen or for a fire material. Creating a transparency map in Photoshop is described to remove black areas from an emissive material image.

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6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 1/23 Home About Spotlight Software & Plugins SketchUpArtists 3D Modelers 3D Artists Authors and Books Business Presentations Techniques Free SketchUp Styles Design Resources Tips & Tricks Tutorials SketchUp and Blender SketchUp and V-Ray SketchUp and Kerkythea SketchUp and Photoshop SketchUp and Podium SketchUp and Traditional/Tradigital Drawing SketchUp and Shaderlight SketchUp and Match Photo SketchUp and Piranesi SketchUp and Artlantis SketchUp and Advanced Modeling SketchUp and Matte Painting SketchUp and Maxwell SketchUp and Twilight Render SketchUp and Thea Render SketchUp and LightUp Raylectron for SketchUp Sponsors Downloads News Jobs Contact Lighting with V-Ray for SketchUp – definitive guide part 2
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 2/23 By Nomer Adona This is part 2 of the definitive guide to lighting with V-Ray for SketchUp by Nomer Adona. Part 1 in this series can be found here. Also for additional help V-Ray for SketchUp User Manual Version 1.48 . Nomer continues his great collection of lighting tutorials to help you get to grips with and simplify this often complex process, with some easy solutions to this often frustrating and confusing aspect to rendering. In this guide Nomer checks out Emissve materials to help light your SketchUp models. You will need a reasonable knowledge of SketchUp, rendering and the use of Photoshop for this tutorial. 1. What is Emissive Material? Emissive Material is actually a special material layer of V-Ray for SketchUp used for producing self-illuminated surfaces. It also allows a plane, a face or an object applied with this material to turn into an actual light source. In other rendering engines, they call this a “self-illuminating material” or in V-Ray Max it is equivalent to V-Ray Light Material. When I first used V-Ray for SketchUp, I was not encouraged to use pure Emissive Material to light up my model. The reason was blotchiness…. is this the case though? Can I possibly produce quality rendering just by using Emissive lighting? In this 2nd Part of my tutorial, I will try my best to share my knowledge and my experience in using Emissive material. But before that, let me reintroduce the basic function of it and how you can access this in V-Ray for SketchUp. Emissive material is normally used as self illuminating material for glow sticks, neon’s, bulbs and LED lights. I will be using this simple scene to show you how to access this material easily. Again, just like my part 1 tutorial in this series, the Camera and Physical Sky are turned off. This means I will be relying totally on Emissive materials to light up my scene.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 3/23 SketchUp Scene 2. Accessing the V-Ray Light material This one is pretty simple. Open the V-Ray Material Editor. Create material, highlight this material and “right-click” your mouse button. Select “Create Layer” and then select “Emissive”. Click the Emissive Layer then and place it on your material stacks. See the image below for reference. V-Ray Light Material The parameters of the Emissive Layer are: Color will be the color of your Emissive Light/ Transparency, Intensity controls the power of your Emissive material. Check Double-Sided, which means both negative and positive faces will have an Emissive Layer. You can load bitmaps on both Color and Transparency boxes, by clicking the lower case “m” on the boxes.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 4/23 Parameters Here is a quick render without using V-Ray for SketchUp default Visopt (Sun, Physical Camera turned off). Intensity = 5
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 5/23 Intensity = 10 There is a way on how to remove blotchiness. I basically increase the HSph Subdivs of my Irradiance map. HSph Subdivs = 50
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 6/23 HSph Subdivs = 150 HSph Subdivs = 250 Conclusion: blotchiness can be removed in V-Ray for SketchUp by increasing the HSph Subdivs using the Irradiance map engine. 3. Combining with Image Based Lighting (IBL) using HDRI (High Dynamic Range Images) I believe Emissive Lighting and IBL are almost same. The only difference is that the image used as IBL is a 32 bit image, while the color/image applied to create a self illuminating surface is 8 bit. Since HDRI lighting will be a separate topic in this series, I won’t focus on this type of lighting at the moment. In the next image I combined emissive lighting and IBL using HDRI in the environment (Note: HDRI will be tackled later in the this series of tutorials). The render below had a very low HDRI’s Bitmap Gamma.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 7/23 Emissive Lighting,IBL and HDRI Adding Reflection Layer: One of the best features of the latest release of V-Ray for SketchUp is the ability to stack layers. In the next render I added a Reflection Layer with a Fresnel Map type. The next render shows a slight reflection thus creating a much more believable surface. I also added a material to the studio surface. Reflection Layer 4. Using Bitmap as Emissive lighting Bitmaps can also be added and create emissive lighting by using them. This is very easy to achieve in V-Ray for SketchUp. Once you have created an Emissive Map Layer, you can actually load a bitmap. This bitmap will then be used as self emitting material. This is useful for TV screens, fire, glowing backgrounds and candle light material.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 8/23 Bitmaps Below is a simple scene that I will use to demonstrate how to place a TV screen map and how to create fire to effectively light my fireplace. SketchUp Scene For this TV, I need to apply the map correctly to the TV screen. Again this is very easy to achieve in Google SketchUp. I won’t go into details on how to do this, instead I will focus on the TV material in this tutorial. Note: Bear in mind that any UV tiling with bump, displacement, dirt, transparency etc. V-Ray for SketchUp follows the UV tiling of the diffuse map.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 9/23 Apply Map to TV Screen Now, all we need to do now is to apply the Emissive map. This time instead of using Emissive Color, we will load the same Diffuse map on to the Emissive Layer. The Intensity will control the power of this map. See image below. Settings Here is the render with multiplier = 1.0. No Physical Camera, no Sun, no IBL.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 10/23 Intensity 1.0 Intensity 2.0 5. Creating the Self Emitting Fire Material For the fireplace, I will be using the material shown below. I downloaded this material from the Internet. I repainted the background and cropped it.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 11/23 Fire Image To create the fire material, create a rectangular face inside the fire place. Here is a sample below. Create Face for Image Then I applied the fire material to the face.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 12/23 Apply Material to Face 5.1 Creating the Transparency Map in Photoshop Now we will create the Transparency map in Photoshop, to remove the black area. Alternatively you can create a PNG file with Transparency click Use Color Texture for Transparency. But me I like the old way. a. I open my fire Diffuse map in Photoshop. Open Map in Photoshop b. Double click the Background Layer to make it Layer 0 c. Create new Layer and Fill it with white and place it under the Layer 0 (your fire material)
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 13/23 Create new Layer and Fill d. Highlight Layer 0 and click Select>Color Range (make sure Selection is chosen). Use the Eyedropper Tool and select the black area in the actual image and adjust Fuzziness. Then click ok. Select Color Range e. Click Layer>Vector Layer Mask .
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 14/23 Add Vector Mask Note: the good thing with adding a mask is you are doing non-destructive editing and at the same time you can always use an array of options in manipulating the mask. You can actually do this, but I will invert in now, so that later you won’t have to invert this map in V-Ray for SketchUp. f. Select the Mask option and click Invert or go to Image>Adjustments>Invert. Invert g. You may want to refine the edge of the mask by clicking “Refine Mask Edge”. Here you can avoid the halos’ you can get and smoothen and feather the mask and even availing the edge detection. This is cool of you are using a lot of 2D transparencies like plants, people etc.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 15/23 Refine Mask Edge h. Now right click on the Mask, click Add Mask to Selection. Once selected, create a new Layer and Fill the selection with black. Fill Selection with Black i. Now unhide Layer 0 and save your Transparency map.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 16/23 Save Transparency Map 5.2 Applying the transparency map in V-Ray for SketchUp In the image below, I loaded the Transparency maps using the following settings. Note the areas highlighted in red. Settings
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 17/23 Below is the render after using the Transparency maps. Render 1 Now I added some more planes, re-sized and rotated. It’s better to have different maps, but for this particular tutorial, I will leave it like this. Render 2 So here is the TV and fireplace together. Not the greatest combination though.
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 18/23 TV and Fire Finally some renders where I only use Emissive materials. Render 1 Render 2
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 19/23 Render 3 Thanks for following my mini series……there is more to come! Cheers Nomer You can catch more of Nomer’s work and tutorials, including part 1 of this series, here on SketchUpArtists. Some of Nomer Adona’s other tutorials here at SketchUpArtists: Lighting with V-Ray for SketchUp – definitive guide part 1 Basic IES Tutorial Using V-Ray for SketchUp Using HDRI in V-Ray for SketchUp IES Light Tutorial using V-Ray for SketchUp Create a Tile Imprint SketchUp, Photoshop, Pixplant and V-Ray Texture Workflow with SketchUp, Photoshop and Podium Use Image Editing Software Inside SketchUp A Watercolor Line Drawing Ink Effect Don’t forget to check out Nomer’s own website for more of his work and free resources. Styles Collections These are our current free SketchUp Style collections. They are all available for download now. Styles
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 20/23 Styles One clever way to enhance your final presentations is with the use of a special feature in SketchUp called Styles. Styles are collections of display settings, including new options like Watermarks and Sketchy Effects, saved in the new Styles palette. You can use Style Builder to create custom non-photorealistic (NPR) Styles for SketchUp. NPR Styles can make your models appear hand-rendered, super-technical, and everything in between......Read Advertise Here Latest News 3D Tree Maker – SketchUp Plugin – Beta SketchUp 2013 FAQ SketchUp 2013 has finally arrived! Learn about lighting in Shaderlight Art of SketchUp: Texture Workflow SketchUp to IPAD SketchUp News Plugin Setting up IES Lights in V-Ray for SketchUp Using Skylight Portals in Shaderlight The Making Of Block 15 Terrace Artists/Authors Adam Billyard Adam Warner Alex Hogrefe Alex Jenyon Christopher Polanski Daniel Tal David Macdonald Do Phu Hoang Nguyen Eric Lay Frederic Yves Moro Ibon Enriques Jacques Cleghorn Jason Christiansen Jean-Pierre Hurel Jim Leggitt John Higgins Jonathan Pagaduan Ignas Kate Marshall Ken Nguyen Laurent Brixius Lewis Wadsworth Majid Yeganegi Mateo Soletic Matthew L. Facundus Michalis Zissiou Mr Wip Nguyễn Ngọc Phúc Nguyen Tran Huy Vu Nick Howlett
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 21/23 Nomeradona Oliver Shea Ricardo Cossoli Robh Ruppel Rocky Vezeau S.Porobic (AKA `Sepo´) Samuli Lautjarvi Scott Baumberger Snoopywang Steven Man Teofilo Pardo Tina Stiles-Bryant Zernan Suarez Recent Comments resvic on FotoSketcher – hand drawn look to your SketchUp image Victor Michael Oguli on Design Jacob on Quick Architectural Marker Illustrations Making Sketchup Digital Drawing Sketch Style | Sketchup Architectural Tutorials | ARCH-student.com on Pencil Overlay Diana on A Watercolor and Line Drawing Ink Effect samuel on SketchUp to Artlantis kenikoradiya on SketchUp News Plugin Lindell Oller on SketchUp News Plugin 10 Responses to “Lighting with V-Ray for SketchUp – definitive guide part 2” 1. rais budhi ghisniawan on May 14th, 2011 8:37 am is very good. I want study. with you 2. TUAN on June 22nd, 2011 4:24 am HI NOMERADONA THANKS . SEE YOU LATE IN SUVN.NET GOODBOY 3. emerson oplas on July 17th, 2011 1:26 am i would like to ask how to turn off the sun? i tried to turn off the “m” at the environment option.. i tried to render it.. i achieved a dark background.. but my model can be still seen clearly.. no shadows.. no lights… so.. dont u mind sharing ur settings for the options? tnx.. 4. kiến trúc sư on July 17th, 2011 6:14 pm i like last pic . It’ really beauty ) 5. Banano on July 30th, 2011 5:23 am excelente render, estoy adquiriendo la mayor cantidad de conocimientos posibles y tus renders son asombrosos saludos 6. Teja wariana on August 16th, 2011 5:07 am hmmm…like that,,that tutorial very used for us………and gimme more learn for sketchup…..thank’s,,regard from me………….. 7. Dhanar on September 3rd, 2011 12:51 pm Sir Nomeradona thanks, very useful tutorial, I’ve tried it and succeeded .. greetings from sketchup users in Indonesia.:) 8. Adrian from Malaysia on May 31st, 2012 6:00 pm
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 22/23 Nice work dude, this is very useful. Too bad i only realised your web site now, else i can learn more from previous. thank you so much for your hardwork : ) 9. admin on June 1st, 2012 10:40 am Hi Adrian Glad you found us and like what you see. Don’t forget to spread the word about too ) James 10. rio on January 1st, 2013 11:11 am it’s good tutorial… very helpfull for someone beginer like me.. thanks Got something to say? Name (required) Email Address (required) Website Speak your mind Submit Comment SketchUp 3D Rendering Tutorials by SketchUpArtists • Copyright © 2013 All Rights Reserved • Excerpts and links may be used,
6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 23/23 provided that full and clear credit is given to Sketchupartists and the original author/owner with appropriate and specific direction to the original content.

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Lighting with v ray for sketch up – definitive guide part 2 -_ sketchup 3d rendering tutorials by sketchupartists

  • 1. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 1/23 Home About Spotlight Software & Plugins SketchUpArtists 3D Modelers 3D Artists Authors and Books Business Presentations Techniques Free SketchUp Styles Design Resources Tips & Tricks Tutorials SketchUp and Blender SketchUp and V-Ray SketchUp and Kerkythea SketchUp and Photoshop SketchUp and Podium SketchUp and Traditional/Tradigital Drawing SketchUp and Shaderlight SketchUp and Match Photo SketchUp and Piranesi SketchUp and Artlantis SketchUp and Advanced Modeling SketchUp and Matte Painting SketchUp and Maxwell SketchUp and Twilight Render SketchUp and Thea Render SketchUp and LightUp Raylectron for SketchUp Sponsors Downloads News Jobs Contact Lighting with V-Ray for SketchUp – definitive guide part 2
  • 2. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 2/23 By Nomer Adona This is part 2 of the definitive guide to lighting with V-Ray for SketchUp by Nomer Adona. Part 1 in this series can be found here. Also for additional help V-Ray for SketchUp User Manual Version 1.48 . Nomer continues his great collection of lighting tutorials to help you get to grips with and simplify this often complex process, with some easy solutions to this often frustrating and confusing aspect to rendering. In this guide Nomer checks out Emissve materials to help light your SketchUp models. You will need a reasonable knowledge of SketchUp, rendering and the use of Photoshop for this tutorial. 1. What is Emissive Material? Emissive Material is actually a special material layer of V-Ray for SketchUp used for producing self-illuminated surfaces. It also allows a plane, a face or an object applied with this material to turn into an actual light source. In other rendering engines, they call this a “self-illuminating material” or in V-Ray Max it is equivalent to V-Ray Light Material. When I first used V-Ray for SketchUp, I was not encouraged to use pure Emissive Material to light up my model. The reason was blotchiness…. is this the case though? Can I possibly produce quality rendering just by using Emissive lighting? In this 2nd Part of my tutorial, I will try my best to share my knowledge and my experience in using Emissive material. But before that, let me reintroduce the basic function of it and how you can access this in V-Ray for SketchUp. Emissive material is normally used as self illuminating material for glow sticks, neon’s, bulbs and LED lights. I will be using this simple scene to show you how to access this material easily. Again, just like my part 1 tutorial in this series, the Camera and Physical Sky are turned off. This means I will be relying totally on Emissive materials to light up my scene.
  • 3. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 3/23 SketchUp Scene 2. Accessing the V-Ray Light material This one is pretty simple. Open the V-Ray Material Editor. Create material, highlight this material and “right-click” your mouse button. Select “Create Layer” and then select “Emissive”. Click the Emissive Layer then and place it on your material stacks. See the image below for reference. V-Ray Light Material The parameters of the Emissive Layer are: Color will be the color of your Emissive Light/ Transparency, Intensity controls the power of your Emissive material. Check Double-Sided, which means both negative and positive faces will have an Emissive Layer. You can load bitmaps on both Color and Transparency boxes, by clicking the lower case “m” on the boxes.
  • 4. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 4/23 Parameters Here is a quick render without using V-Ray for SketchUp default Visopt (Sun, Physical Camera turned off). Intensity = 5
  • 5. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 5/23 Intensity = 10 There is a way on how to remove blotchiness. I basically increase the HSph Subdivs of my Irradiance map. HSph Subdivs = 50
  • 6. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 6/23 HSph Subdivs = 150 HSph Subdivs = 250 Conclusion: blotchiness can be removed in V-Ray for SketchUp by increasing the HSph Subdivs using the Irradiance map engine. 3. Combining with Image Based Lighting (IBL) using HDRI (High Dynamic Range Images) I believe Emissive Lighting and IBL are almost same. The only difference is that the image used as IBL is a 32 bit image, while the color/image applied to create a self illuminating surface is 8 bit. Since HDRI lighting will be a separate topic in this series, I won’t focus on this type of lighting at the moment. In the next image I combined emissive lighting and IBL using HDRI in the environment (Note: HDRI will be tackled later in the this series of tutorials). The render below had a very low HDRI’s Bitmap Gamma.
  • 7. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 7/23 Emissive Lighting,IBL and HDRI Adding Reflection Layer: One of the best features of the latest release of V-Ray for SketchUp is the ability to stack layers. In the next render I added a Reflection Layer with a Fresnel Map type. The next render shows a slight reflection thus creating a much more believable surface. I also added a material to the studio surface. Reflection Layer 4. Using Bitmap as Emissive lighting Bitmaps can also be added and create emissive lighting by using them. This is very easy to achieve in V-Ray for SketchUp. Once you have created an Emissive Map Layer, you can actually load a bitmap. This bitmap will then be used as self emitting material. This is useful for TV screens, fire, glowing backgrounds and candle light material.
  • 8. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 8/23 Bitmaps Below is a simple scene that I will use to demonstrate how to place a TV screen map and how to create fire to effectively light my fireplace. SketchUp Scene For this TV, I need to apply the map correctly to the TV screen. Again this is very easy to achieve in Google SketchUp. I won’t go into details on how to do this, instead I will focus on the TV material in this tutorial. Note: Bear in mind that any UV tiling with bump, displacement, dirt, transparency etc. V-Ray for SketchUp follows the UV tiling of the diffuse map.
  • 9. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 9/23 Apply Map to TV Screen Now, all we need to do now is to apply the Emissive map. This time instead of using Emissive Color, we will load the same Diffuse map on to the Emissive Layer. The Intensity will control the power of this map. See image below. Settings Here is the render with multiplier = 1.0. No Physical Camera, no Sun, no IBL.
  • 10. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 10/23 Intensity 1.0 Intensity 2.0 5. Creating the Self Emitting Fire Material For the fireplace, I will be using the material shown below. I downloaded this material from the Internet. I repainted the background and cropped it.
  • 11. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 11/23 Fire Image To create the fire material, create a rectangular face inside the fire place. Here is a sample below. Create Face for Image Then I applied the fire material to the face.
  • 12. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 12/23 Apply Material to Face 5.1 Creating the Transparency Map in Photoshop Now we will create the Transparency map in Photoshop, to remove the black area. Alternatively you can create a PNG file with Transparency click Use Color Texture for Transparency. But me I like the old way. a. I open my fire Diffuse map in Photoshop. Open Map in Photoshop b. Double click the Background Layer to make it Layer 0 c. Create new Layer and Fill it with white and place it under the Layer 0 (your fire material)
  • 13. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 13/23 Create new Layer and Fill d. Highlight Layer 0 and click Select>Color Range (make sure Selection is chosen). Use the Eyedropper Tool and select the black area in the actual image and adjust Fuzziness. Then click ok. Select Color Range e. Click Layer>Vector Layer Mask .
  • 14. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 14/23 Add Vector Mask Note: the good thing with adding a mask is you are doing non-destructive editing and at the same time you can always use an array of options in manipulating the mask. You can actually do this, but I will invert in now, so that later you won’t have to invert this map in V-Ray for SketchUp. f. Select the Mask option and click Invert or go to Image>Adjustments>Invert. Invert g. You may want to refine the edge of the mask by clicking “Refine Mask Edge”. Here you can avoid the halos’ you can get and smoothen and feather the mask and even availing the edge detection. This is cool of you are using a lot of 2D transparencies like plants, people etc.
  • 15. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 15/23 Refine Mask Edge h. Now right click on the Mask, click Add Mask to Selection. Once selected, create a new Layer and Fill the selection with black. Fill Selection with Black i. Now unhide Layer 0 and save your Transparency map.
  • 16. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 16/23 Save Transparency Map 5.2 Applying the transparency map in V-Ray for SketchUp In the image below, I loaded the Transparency maps using the following settings. Note the areas highlighted in red. Settings
  • 17. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 17/23 Below is the render after using the Transparency maps. Render 1 Now I added some more planes, re-sized and rotated. It’s better to have different maps, but for this particular tutorial, I will leave it like this. Render 2 So here is the TV and fireplace together. Not the greatest combination though.
  • 18. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 18/23 TV and Fire Finally some renders where I only use Emissive materials. Render 1 Render 2
  • 19. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 19/23 Render 3 Thanks for following my mini series……there is more to come! Cheers Nomer You can catch more of Nomer’s work and tutorials, including part 1 of this series, here on SketchUpArtists. Some of Nomer Adona’s other tutorials here at SketchUpArtists: Lighting with V-Ray for SketchUp – definitive guide part 1 Basic IES Tutorial Using V-Ray for SketchUp Using HDRI in V-Ray for SketchUp IES Light Tutorial using V-Ray for SketchUp Create a Tile Imprint SketchUp, Photoshop, Pixplant and V-Ray Texture Workflow with SketchUp, Photoshop and Podium Use Image Editing Software Inside SketchUp A Watercolor Line Drawing Ink Effect Don’t forget to check out Nomer’s own website for more of his work and free resources. Styles Collections These are our current free SketchUp Style collections. They are all available for download now. Styles
  • 20. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 20/23 Styles One clever way to enhance your final presentations is with the use of a special feature in SketchUp called Styles. Styles are collections of display settings, including new options like Watermarks and Sketchy Effects, saved in the new Styles palette. You can use Style Builder to create custom non-photorealistic (NPR) Styles for SketchUp. NPR Styles can make your models appear hand-rendered, super-technical, and everything in between......Read Advertise Here Latest News 3D Tree Maker – SketchUp Plugin – Beta SketchUp 2013 FAQ SketchUp 2013 has finally arrived! Learn about lighting in Shaderlight Art of SketchUp: Texture Workflow SketchUp to IPAD SketchUp News Plugin Setting up IES Lights in V-Ray for SketchUp Using Skylight Portals in Shaderlight The Making Of Block 15 Terrace Artists/Authors Adam Billyard Adam Warner Alex Hogrefe Alex Jenyon Christopher Polanski Daniel Tal David Macdonald Do Phu Hoang Nguyen Eric Lay Frederic Yves Moro Ibon Enriques Jacques Cleghorn Jason Christiansen Jean-Pierre Hurel Jim Leggitt John Higgins Jonathan Pagaduan Ignas Kate Marshall Ken Nguyen Laurent Brixius Lewis Wadsworth Majid Yeganegi Mateo Soletic Matthew L. Facundus Michalis Zissiou Mr Wip Nguyễn Ngọc Phúc Nguyen Tran Huy Vu Nick Howlett
  • 21. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 21/23 Nomeradona Oliver Shea Ricardo Cossoli Robh Ruppel Rocky Vezeau S.Porobic (AKA `Sepo´) Samuli Lautjarvi Scott Baumberger Snoopywang Steven Man Teofilo Pardo Tina Stiles-Bryant Zernan Suarez Recent Comments resvic on FotoSketcher – hand drawn look to your SketchUp image Victor Michael Oguli on Design Jacob on Quick Architectural Marker Illustrations Making Sketchup Digital Drawing Sketch Style | Sketchup Architectural Tutorials | ARCH-student.com on Pencil Overlay Diana on A Watercolor and Line Drawing Ink Effect samuel on SketchUp to Artlantis kenikoradiya on SketchUp News Plugin Lindell Oller on SketchUp News Plugin 10 Responses to “Lighting with V-Ray for SketchUp – definitive guide part 2” 1. rais budhi ghisniawan on May 14th, 2011 8:37 am is very good. I want study. with you 2. TUAN on June 22nd, 2011 4:24 am HI NOMERADONA THANKS . SEE YOU LATE IN SUVN.NET GOODBOY 3. emerson oplas on July 17th, 2011 1:26 am i would like to ask how to turn off the sun? i tried to turn off the “m” at the environment option.. i tried to render it.. i achieved a dark background.. but my model can be still seen clearly.. no shadows.. no lights… so.. dont u mind sharing ur settings for the options? tnx.. 4. kiến trúc sư on July 17th, 2011 6:14 pm i like last pic . It’ really beauty ) 5. Banano on July 30th, 2011 5:23 am excelente render, estoy adquiriendo la mayor cantidad de conocimientos posibles y tus renders son asombrosos saludos 6. Teja wariana on August 16th, 2011 5:07 am hmmm…like that,,that tutorial very used for us………and gimme more learn for sketchup…..thank’s,,regard from me………….. 7. Dhanar on September 3rd, 2011 12:51 pm Sir Nomeradona thanks, very useful tutorial, I’ve tried it and succeeded .. greetings from sketchup users in Indonesia.:) 8. Adrian from Malaysia on May 31st, 2012 6:00 pm
  • 22. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 22/23 Nice work dude, this is very useful. Too bad i only realised your web site now, else i can learn more from previous. thank you so much for your hardwork : ) 9. admin on June 1st, 2012 10:40 am Hi Adrian Glad you found us and like what you see. Don’t forget to spread the word about too ) James 10. rio on January 1st, 2013 11:11 am it’s good tutorial… very helpfull for someone beginer like me.. thanks Got something to say? Name (required) Email Address (required) Website Speak your mind Submit Comment SketchUp 3D Rendering Tutorials by SketchUpArtists • Copyright © 2013 All Rights Reserved • Excerpts and links may be used,
  • 23. 6/8/13 Lighting with V-Rayfor SketchUp – definitive guide part 2 :: SketchUp 3D Rendering Tutorials bySketchUpArtists www.sketchupartists.org/tutorials/sketchup-and-v-ray/lighting-with-v-ray-for-sketchup-definitive-guide-part-2/ 23/23 provided that full and clear credit is given to Sketchupartists and the original author/owner with appropriate and specific direction to the original content.