Using a Dome Light
Using a Dome Light provides a natural-looking lighting environment to the scene. From the Create menu select Light > Dome Light.
From the Property menu, you can specify a 4k texture by selecting your desired .hdr file in the “Texture File” field.
Then, adjust the Dome Light’s Intensity. Decreasing the intensity for example, will make the lighting appear less harsh.
Tuning Real Time Mode’s Settings
Enable Sampled Direct Lighting
Under the RTX Settings tab, select the Ray Tracing category. By default, the “Enable Sampled Direct Lighting” checkbox will be empty.
With Sampled Direct Lighting OFF, the scene looks like this:
With Sampled Direct Lighting ON:
Enabling Sampled Direct Lighting improves static images. It might cause a ghosting shadow effect with moving objects.
Under the RTX Settings tab, select the Ray Tracing category. From here, you can select an anti-aliasing algorithm to apply.
Loading OV stages faster with OV Cache
The first time you load a large stage, it may take a while for the materials to compile.
Installing Omniverse Cache will help load the stage more quickly each subsequent time.
To install, first get Omniverse Cache from the Launcher (for headless/cloud users, please download OV Cache)
See Cache Workstation for instructions on how to install.
Then to make an executable, run the following from your downloads folder:
sudo chmod +x ./omniverse-cache.run
This will mark your file as an executable. You can confirm this by running the ls command, notice the .run filename is now shown in a different colour to reflect this change.
Next use this command to run your executable:
Finally, run the following to enable OV Cache:
Once OV Cache has been enabled successfully, you should see “CACHE: ON” in green text in the top right corner of your Isaac Sim window.