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This page offers a quick starting point on working with image-based lighting, sunlight, and Cosmos HDRIs in Chaos in Chaos Vantage.

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Steps



Overview

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1. Open your Vantage scene.
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You can enhance your scene in Chaos Vantage by adding Cosmos HDRIs, as well as by using geo-located time of day settings, and advanced lighting setups. Here you can explore how to integrate high-quality HDRIs from the Chaos Cosmos library to create realistic environment lighting, adjust the time of day based on specific geographical locations for accurate sunlight simulation, and manage multiple light sources within your scene.

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Note that the final animation in the video has undergone some post-processing.

Want to follow along but don’t have a license?


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<iframe width="560" height="350" src="https://www.youtube.com/embed/DiDf8AZjG68" title="Image-based lighting, Sunlight, and Cosmos HDRIs in Chaos Vantage" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>



Steps

Load a scene or project in Chaos Vantage.

2. Import HDRIs from

Step 1: Chaos Cosmos

.

HDRIs Import

Open the built-in Cosmos browser by clicking the Chaos Cosmos Browser (

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Vantage_TopToobar_ChaosCosmosBrowser.pngImage Added) button in the top toolbar. Alternatively, go to the Cosmos menu and select Chaos Cosmos Browser.

From the HDRI section, choose a sky image

(

. Note that previously downloaded assets can be filtered using the Downloadedcategory

) and

.

Then import the HDRI by either:

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  • drag-n-
drop
  • dropping it in the sky
  • using the import (ChaosCosmos_ImportBtn.pngImage Modified) button

Swap different HDRIs to explore different lighting scenarios.

Adjust exposure as needed.

3. Explore time of day variations.

Step 2: Time of Day Variations

In the

Lights

Environment tab > Sky rollout, switch the Environment mode to Physical sky.

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note

Switching the Environment mode to Physical sky

is only available if the loaded scene has been exported with a V-Ray Sun and Sky

ignores the previously imported HDRI. Instead a Sky texture is used.

In the Environment tab > Sun rollout, select a Sun position mode:

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sun settings,
  • switch the Sun position dropdown to Altitude/Azimuth to easily control its position in the sky by adjusting the Altitude and Azimuth parameters.
In the sun settings,
  • switch the Sun position dropdown to Geolocation to get accurate sun position based on Latitude/Longitude coordinates and Time values.
4.

Step 3: Work with many lights

.

Lights can be selected either in the viewport with the Select (

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Instanced lights are shown as

grouped

groups marked with [G] in the light lister of the Lights tab and share settings. Making changes to one parameter changes it for all of the lights. Instanced lights can also become unique (ungrouped) by using the checkbox or the Ungroup (Image Added) button.

5.

Step 4: Individual control of lights

.

To make a change to a light, select it either in the viewport or in the Objects tab and change its parameters.

Shown

Available parameters

for lights

can be

folded or expanded by using the Expand All or Fold All buttons above the light lister. Additionally, available parameters can be

displayed by switching between the Compact, Basic, and Advanced buttons.

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You can disable the lights' gizmos via the Open View filters (Image Added) option in the top toolbar.

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