ELC + ABS

Android could be defined as a "high-level operating system", where even relative simple tasks - such as taking a screenshot - go through countless layers of abstraction. Track that path can be a challenging task, even for experienced Android developers. This technical talk analyses part of the graphics stack and goes though the steps involved in taking a screenshot as a guide, starting on application side and going through the Framework, the Surface Flinger, all the way down to OpenGL APIs. Along the way, tips and tricks for navigating the code with runtime assistance will be presented. Lastly, major problems with the current stack will be discussed, along with the improvements introduced in Android Lollipop.