Android sample app to learn about the RenderEffect
API, which was recently introduced in Android 12.
A RenderEffect
corresponds to a visual effect that can be applied to render a part of the UI, a RenderNode
. It's a structure used to record draw operations, and can store and apply render properties when drawn. RenderNode
s are useful to divide up the rendering of a scene into multiple smaller pieces. This allows updating them individually, which is more optimal/cheaper.
View
s in Android internally use RenderNode
s, this allows for hardware accelerated rendering, meaning that UI hierarchies are rendered using the GPU, instead ofthe CPU. A RenderEffect
can be applied to a View by calling View.setRenderEffect(RenderEffect)
.
The app mainly showcases:
- Appliying blur effects on a View.
- Applying color filter effects on a View.
- Applying offset effects on a View.
The sample should be run on a device/an emulator running Android 12, since the RenderEffect
API was only introduced in Android S.