In the 3D world, light and shadow have always been extremely important components that enrich the entire environment. High quality shadows can make the game world look more realistic.

Creator 3.0 currently supports both Planar and ShadowMap shadow types.


Enable Shadow Effect

To enable the shadow effect for an object, proceed as follows:

  1. Check Scene in the Hierarchy panel, and then check the Enabled property in the Shadows component of the Inspector panel.


  2. Select the 3D node that needs to display shadows in the Hierarchy panel, and then set the ShadowCastingMode property to ON in the MeshRenderer component of the Inspector panel.


    If the shadow type is ShadowMap, set the ReceiveShadow property on the MeshRenderer component to ON.

Note: if the shadows are not displayed properly, adjust the direction of the directional light.

Shadow Type

The shadow type can be set in the Type property of the Shadows component.

Planar Shadow

The Planar shadow type is generally used for simpler scenes.


Property Description
Enabled Whether to enable shadow effect
Type Shadow type
ShadowColor Shadow color
Normal The normal line perpendicular to the shadow, used to adjust the slope of the shadow
Distance The distance of the shadow in the direction of the normal to the origin of the coordinate

Adjust the direction of the directional light to adjust the position of the shadow.

Note: planar shadows are only cast on planar surfaces, not on objects, which means that the ReceiveShadow property in the MeshRenderer component is invalid.


ShadowMap renders the scene with the lights as the viewpoint. From the position of the lights, the places in the scene that are not visible are where the shadows are created.

shadow map panel details

Property Explanation
Enabled Whether to enable the shadow effect
Type Choose the shadow type
ShadowColor Color value of the resulting shadow
Pcf Set the anti-aliasing level of the shadow edge, currently including HARD, FILTER_X5, FILTER_X9, FILTER_X25. Please refer to the section PCF Soft Shadow below for details.
AutoAdapt If checked, the range of shadows will be calculated automatically, as described in section AutoAdapt Adaptive Shadow Calculation below. If this option is unchecked, the following properties are enabled to manually set the range of shadow generation.
Near Set the near clipping plane of the main lights shadow camera
Far Set the far clipping plane of the main lights shadow camera
OrthoSize Set the ortho viewport size of the main lights shadow camera
MaxReceived The maximum number of lights supported for shadow generation, default is 4, can be adjusted as needed.
ShadowMapSize Set the texture size of the shadow
Aspect Set the ortho viewport aspect ratio of the main lights shadow camera
Bias Set the shadow offset value to prevent z-fitting.

ShadowMap receives and displays shadow effects generated by other objects when ReceiveShadow on the object MeshRenderer component is enabled.

ShadowMap is generally used for scenes that require more realistic and complex light and shadow effects. The downside is that if the lights is not moved, then the previously generated Shadow Map can be reused, while once the lights is moved, then a new ShadowMap needs to be recalculated.

PCF Soft Shadow

Percentage Closer Filtering (PCF) is a simple, common technique used to achieve shadow edge desampling, by smoothing shadow edges to eliminate jaggedness in shadow mapping. The principle is to sample around the current pixel (also called a fragment), then calculate the ratio of the sample closer to the lights compared to the fragment, use this ratio to scale the scattered light and specular light, and then color the fragment to blur the shadow edges.

Cocos Creator currently supports 5x, 9x, and 25x sampling. The larger the magnification, the larger the sampling area and the more blurred the shadow edges.

AutoAdapt Adaptive Shadow Calculation

AutoAdapt adaptive shadow calculation will automatically calculate the range of shadows created under the lightView, as well as the distance of the shadow camera.

Support dynamic batching to improve performance

For models with instancing enabled in the material, the planar shadow will automatically draw with instancing as well, see the Dynamic Batching documentation for details.

results matching ""

    No results matching ""