Learn how to specify render component contribution with Ray Switch.
- [Instructor] Our image-based lighting is set up…with a SkyDome light,…but we need to add the background separately.…Let's open the Arnold RenderView.…The background must only be visible to the camera.…We don't want the background to send out illuminations…such as diffuse, glossy, and refraction rays.…All of that is provided by the SkyDome light,…and we don't want to double up on any of that…with our background.…To make the background only visible to the camera…and not change the lighting,…we will use a RaySwitch material.…
To add the background, open up the render settings window,…and in the Arnold renderer tab,…open environment, and we have background.…Click on the create render node button…and we get a little pop-up,…in which we can only choose Sky,…Physical Sky, and RaySwitch.…Sky is a lighting effect and also a background,…but it's only optimized for flat colors.…It's not recommended for image-based lighting.…
The Physical Sky shader produces the image…of a sun and a gradient sky.…We'll look at that in the following movie.…
AuthorAaron F. Ross
- Arnold rendering concepts
- Lighting with Maya and Arnold lights
- Controlling exposure
- Filtering light with Barndoor and Gobo
- Light attenuation with decay
- Image-based lighting with SkyDome
- Exterior daylight with Physical Sky
- Arnold standard material attributes
- Mapping material attributes
- Rendering refractions
- Mesh subdivision and displacement at render time
- Shading effects such as ambient occlusion and vertex color
- Camera effects such as fisheye and depth of field
- Animation image sequence rendering
Skill Level Intermediate
Rendering refraction4m 56s
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