adb shell dumpsys SurfaceFlinger

adb shell dumpsys SurfaceFlinger

adb shell dumpsys SurfaceFlingerAnalyze the Android system layer
The output of this command is not much, you can redirect the output to a file

adb shell dumpsys SurfaceFlinger > ./Downloads/surface.txt

The following content, filterHWC layers

In addition, the filter mentioned in the previous section WindowedMagnificationcan be found to correspond to the hierarchical tree of the window:

reference:

• graphics

The Hardware Composite Renderer (HWC) HAL is used to determine the most efficient way to composite buffers with the available hardware. As a HAL, its implementation is device-specific and is usually done by the display hardware original equipment manufacturer (OEM).
The Hardware Composite Renderer (HWC) HAL is used to composite layers received from SurfaceFlinger, reducing the amount of compositing performed by OpenGL ES (GLES) and the GPU.