To use a custom HDR image as an environment in your scene (for direct visibility and lighting):
- Add a Corona Sky object to your scene (Corona > Corona Sky):
- Select the Sky object and change the "Type" to Shader/HDRI:
- Load the HDRI of your choice into the shader slot of the Corona Sky object:
- A low-resolution preview should be visible in the viewport display:
- The viewport resolution can be increased from "Default" to a higher resolution you're happy working with:
- To make the environment visible only to specific ray types (direct visibility, GI, reflections, refraction), you can add Corona Compositing tag to the Corona Sky object (Tags > Corona Tags > Corona Compositing):
- Alternatively, visibility options can also be found within the Corona Sky object itself: