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VRay.com - Your source for all things VRay  ::  VRay for SketchUp  ::  Manual  ::  Material: Reflection Layer

VRay for SketchUp Manual

VRay for SketchUp Manual

Material: Reflection Layer

This section is about how to add and edit the reflection layer. Please select the red chair in the scene. Click the "Materials Editor" icon in the V-Ray toolbar.

Adding Reflection Layer

1. Click on the "+" next to Chair_red under Scene Materials to pull out all the layers. Right click on Reflection Layer. Select "Add new layer" to add a new reflection layer for this material.

Adding a Reflection Layer - Step 1

Reflection under the material control section is displayed, as shown below.

Adding a Reflection Layer - Step 2

2. To remove a new added layer, right click on the layer you wish to remove then select remove.

Remove a new added layer

3. By Default the reflection layer has a fresnel map which varies the amount of reflection based on the viewing angle. If that map is removed then the reflection is constant over the whole material. Since the reflection color is set to white this leads to complete reflection on the whole material. This is a good setting for chrome or a mirror, but not most materials.

Reflection Layer example

4. Now we will go through the specifics of the fresnel map. Click on Reflection on the right section, and then click on the "m" box to set reflection.

Fresnel Map settings

5. If it is not already enabled, scroll down the box next to Type, and then select Fresnel. Fresnel IOR is to control the reflection intensity. Keep the default value of 1.55, then click Apply.

Fresnel Map settings

Fresnel Map settings

6. Click on the Material Preview again. The Material now has reflection quality with the same color on it.

Material Preview - Reflection Layer

Notice the "m" on the right side of the Reflection is now changed to "M". That means the Map has some other characters associated with it now. Please use the same method and apply Fresnel to other colors and render it.

Reflection Layer example

7. Below image rendered with Fresnel IOR set to 2.5, it has more reflection and looks more like a metal texture now. The chair has some black reflection due to the default setting of the background color is black. Under V-Ray Environment, change the color under Background to white and see what will you get.

Fresnel IOR example

Fresnel Reflections

Fresnel Reflections are a naturally occurring phenomenon that states that an object becomes more reflective the greater the angle at which it is seen. An example of this principle would be a window that is seen from straight ahead as opposed to at an angle. Through manipulating the Index of Refraction (IOR) the reflective characteristics of an object can be changed. A lower IOR means that a larger angle is needed between the observer and the surface before the object begins to reflect. A higher IOR means that a smaller angle is needed, which in turn causes the object to reflect sooner. To have your renderings be more physically correct, it is recommended to have the IOR of an object correspond to its actual IOR.

Below are six rendered samples each with a different Fresnel IOR. The last one is rendered with full reflection to create a chrome material.

Fresnel Reflection examples


V-Ray 2.0 for SketchUp

V-Ray 2.0 for SketchUp
 
 
  V-Ray 2.0 for SketchUp Service Pack 1 Now Available
 

V-Ray 2.0 for SketchUp Service Pack 1 is now available for download. A few new features have been added and improvements have been made to many current ones. Also, V-Ray 2.0 for SketchUp now supports SketchUp 2014.

  • With the new Batch Render tool you can now render all SketchUp scene tabs with a single click.
  • V-Ray RT has been optimized for a more interactive experience and focused on a deeper integration with SketchUp.
  • Detailed scenes will be faster and easier to create with further improvements to V-Ray Proxies.
  • Thanks to your feedback, this release includes many bug fixes, including fixes to distributed rendering.
SketchUp 2014 Compatible

 

V-Ray 2.0 for SketchUp Now Available
Rendering by Dario Dubinsky

V-Ray 2.0 for SketchUp is a massive upgrade to V-Ray for SketchUp which includes a series of new feature introductions that enhance visualization workflow and render quality such as V-Ray RT, V-Ray Dome Light and streamlining scene complexity with V-Ray Proxy.

V-Ray 2.0 for SketchUp
Rendering by Dario Dubinsky

Click here for more information


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SketchUp is one of the most widely used and easy to learn 3D Modeling software on the market today. With V-Ray for SketchUp, users now have one of the most powerful rendering tools available to visualize their models with the upmost quality and realism. V-Ray works within the SketchUp environment allowing users to be able to efficiently incorporate the task of rendering within their current workflows.

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Monday, March 24, 2014

V-Ray 2.0 for SketchUp now supports SketchUp 2014

V-Ray 2.0 for SketchUp now supports SketchUp 2014

V-Ray 2.0 for SketchUp Service Pack 1 is now available for download. A few new features have been added and improvements have been made to many current ones.

Click here for more information



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