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            With new changes, vc4graphics is added to Machine features and headers from userland is used for device-hal compilation. Mesa library is enabled for vc4 supported architecture. Graphics libraries like Egl and Gles2 from userland is suppressed and is taken from Mesa. OpenGL (Open graphics Library), API for interacting with GPU ( graphical Processing Unit) is enabled with vc4.

     Westeros  meta-wpe layer :

             Userland Userland dependency of wpeframework and snapshot feature is removed with vc4 changes. wayland opengl is enabled for gstreamer plugins. Userland uses dispmanx for rendering graphics and video. With vc4graphics instead of dispmanx, DRM is used for rendering.  Westeros sink is enabled to use v4l2. 

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