Faster and More Battery Efficient
Jacob’s Ladder is open-source on Github. The Github repo also contains a base library you can use to make your own native Live Wallpaper (see below for instructions).
Making your Live Wallpaper slick and battery-efficient takes a concerted effort. When I decided to put Jacob’s Ladder on the Play Store, I prioritized reducing power consumption and maintaining a high frame rate.
On my Nexus 5 the frame rate goes as high as 100 frames per second and despite the number of vertices, after running for 20 minutes the battery usage remained below 1%:
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Screenshots of Jacob’s Ladder running on a Nexus 5, Marshmallow.
To efficiently render about 2000 vertices per frame requires a lean rendering pipeline. This pipeline starts at the Java Wallpaper class, runs through native (C++) code to the GPU, where it finally shows on screen. Any performance optimizations you make along this path will smooth out the rendering and ultimately improve the experience.
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