How to improve the shadow quality when vr renders pictures?

In fact, there is a global switch for vary to render pictures without shadows, and the environment is related to shadows. In the lighting options, "Enable Shadow" is not triggered or the correct shadow form is not selected. Vray's solution for rendering shadows is as follows:

One: There is no plane below the model to receive shadows.

If there is only one tall building in the scene, there is nothing else beside it. Then we can't render the light we need, so we can make a big plane under the tall building to receive the light. So you can render shadows.

Two: you can't see the shadow at the current angle.

If the angle of the light is the same as or close to that of the camera, the shadow behind will also be blocked by the building, so you can adjust the angle of the light to show the position of the shadow.

Three: Shadow is not enabled or the shadow parameters are set incorrectly.

Select the main light in the scene as shown above. Enter the modify command panel, check the box below the shadow before "Enable" in the volume bar of General Parameters, and select "Change Shadow" in the shadow form below (it will only be displayed if a change renderer is installed).

The other is the Vray shadow parameter. To turn on the area shadow, select the cube and give different uvw values according to different lamps. For example, when using TargetDirectionalLight to simulate sunlight, the UVW is 500,500,500. If it is a downlight, 100-300 will do. Without this setting, the scene will feel unreal.

If there is no shadow in the optical area network, then the shadow switch is generally not turned on, or the light source intensity is too weak, and the shadow is not obvious.