V-Ray 8.24 [HDRI]

“Rendering with HDRIs”

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V-Ray 3.6+:

  1.  In a Rhinoceros document, open the V-Ray Asset Editor.
  2. Make sure you have a sun system installed (See V-Ray 8.17 [sun]) by navigating to the "Lights" tab of the V-Ray Asset Editor.  You should see your light (in this example, it is called "Sun Light").  You can rename your light by clicking on it.[Premium Content - Login] [Membership Options]
  3. Switch to the settings tab of the V-Ray Asset Editor.  Expand the section for "Environment" and click on the checkerboard pattern next to "Background."[Premium Content - Login] [Membership Options]
  4. Click on the background type button  and choose "Bitmap" from the list that appears.  Navigate to your desired HDRI file.  It is probably a .hdr or .exr file.  Please visit the V-Ray Quick Rendering Setups page for some links to HDRI files.[Premium Content - Login] [Membership Options]
  5. Expand the Texture Placement section and change the Type to be "Environment" and the Mapping to be "Spherical" (see below).[Premium Content - Login] [Membership Options]
  6. When you are done, click the "Back" button.
  7. Expand the Environment Overrides section within the Environment section of the V-Ray Asset Editor.  Click on check box next to "GI Skylight" and then click on the checkerboard pattern.  Follow steps 4 & 5 above but select the slightly blurred version of the HDRI file.  This file will serve as your GI Skylight for the rendering.  If a slightly blurry version of your HDRI is not available, you can use the same HDRI file that you used in step 4 & 5.[Premium Content - Login] [Membership Options]
  8. Perform a test rendering.  If your background/sky appears too dark or too light relative to the rendered objects, change the value next to "Background" in the Environment section of the V-Ray Asset Editor (In the image above, this value is set to 6, for example).  If you're rendering turns out too light/bright or too dark as a whole, Please follow V-Ray 8.19 [physical camera] to adjust the camera's exposure value.

V-Ray 1.5:

  1. In a Rhinoceros document, open the V-Ray Options menu.
  2. In the Environment Drawer, confirm that GI (Skylight) and Background are both checked. Click on the “m” next to GI Skylight.[Premium Content - Login] [Membership Options]
  3. Select Bitmap and browse for your HDRI image. Sample files are available on www.digitaltoolsforarchitects.com.
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    • Note: Ideally the bitmap you use for the GI (Skylight) environment should be a softened version of the HDRI. You can create this by following Photoshop 1.__) You will use the crisp version for the Background bitmap.
  4. Under UVW, select the type as “Environment” and change the mapping to match the type of HDRI image you are using. Most images will be either Spherical or Mirror Ball.Cloudy_Sky [Premium Content - Login] [Membership Options]
  5. Click apply to finish. Now click on the “m” next to Background.
  6. Repeat steps 3 & 4 only select the crisp background .hdr image.[Premium Content - Login] [Membership Options]
  7. In the environment drawer, change the GI Skylight value to 6.0 and the Background value to 2.0.


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