Overrides
This forces the alpha channel output of the rendered physical sky to 0.0, instead of the default 1.0. Useful for compositing.
Hereby the physical sky becomes visible for the direct calculation rays of the camera. When disabled, the resultant color will be black with 0.0 for alpha.
This example shows a landscape object with a reflective water material in a physical sky environment. Disabling the Background option removes the calculation of direct rays for the sky. However, the reflection of the sky on the water material remains visible because it is controlled separately using the Reflection option.
Turns the calculation of reflective rays on or off for the Physical Sky environment.
This example shows a landscape object with a reflective water material in a physical sky environment. On the right side the Reflection option has been switched off. The reflection of the sky environment on the water surface disappears.
This controls the intensity with which the sky appears on reflective surfaces.
Turns the calculation of the Physical Sky on or off for refractive materials.
This example shows a refractive glas material in a Physical Sky environment. On the left the Refraction option was active, on the right it was deactivated. Only the Reflection of the sky is still visible on the deformed sphere.
This controls the intensity with which the sky appears on refractive surfaces.
This can be used to turn on or off the consideration of the physical sky when calculating the global illumination.
The image on the left shows an object lit by the Physical Sun and the Physical Sky. On the right side the contribution of the Physical Sky to the GI calculation was switched off. Notice how the sunlight can still bounce off the ground and illuminate the backside of the object.
This controls the intensity with which the Physical Sky contributes to the calculation of the global illumination.