genode/repos/demo
Norman Feske 8082aa980e framebuffer_session: atomic blitting and panning
By enhancing the Framebuffer::Session interface by the new RPC functions
'blit' and 'panning', GUI clients become able to attain tearing-free
output. Two modes of operations are supported.

1. Atomic back-to-front blitting

   GUI clients that partially update their user interface like regular
   application dialogs, can now implement double buffering by placing
   both the back buffer and front buffer within the GUI session's
   framebuffer and configuring a view that shows only the front buffer.
   The 'blit' operation allows the client to atomically flush pixels
   from the back buffer to the front buffer.

2. Atomic buffer flipping

   GUI clients that always update all pixels like a media player or
   a game can now use the 'panning' feature to atomically redirect the
   displayed pixels to a different portion of the GUI session's virtual
   frame buffer. The virtual framebuffer always contains two frames,
   the displayed one and the next one. Once the next frame is complete,
   the client changes the panning position to the portion containing
   the next frame.

Issue #5350
2024-10-08 09:09:23 +02:00
..
doc demo: update tutorial text 2024-05-29 09:18:12 +02:00
include framebuffer_session: use Rect as refresh argument 2024-10-08 09:09:23 +02:00
lib demo: remove use of format strings from mini_c lib 2023-03-13 14:32:53 +01:00
recipes depot: update recipe hashes 2024-08-29 12:32:25 +02:00
src framebuffer_session: atomic blitting and panning 2024-10-08 09:09:23 +02:00