Lighting an Interior Daytime Scene - Photographic Rendering with V-Ray for SketchUp - page 78

2. In the Environment rollout, click on the map button for the Reflection/re-
fraction (background) control so as to open up the V-Ray texture editor win-
dow.
3. In the drop down below the Preview button, switch the TexSky map over to
using a TexBitmap .
4. In the Open Bitmap File dialog box that appears, navigate to your Et-
niesPark_Center

folder and this time select the

Et-

nies_Park_Center_3k.hdr file.
5. With Gamma Corrected set as the Color Space option, set the Gamma
value to 2.0 .
6. Down in the UVW options, set the UVW type in the drop down to
UVWGenEnvironment and set the Horizontal Rotation value to 260 (this
means the location of the Sun in our background HDRI will match that being
used by the lighting).
7. Click on OK to exit the texture editor and then set the multiplier value for the
Reflection/refraction (background) control to 4.0 .

Note

This value has no effect whatsoever on the lighting levels in the scene as
it only controls the brightness of the image being rendered as the scene
backdrop.

8. Finally, we can switch back to the POV - Main Gallery view and hit the
render button one last time.

Our render shows that we now have some blue back in our sky that can easily be
controlled and made lighter or darker whenever we wish.