Fixed an issue where `display_read()` in the SDL driver was not working.
In the current implementation, use texture to represent screen images.
To read this, draw it once on another surface and then read it.
Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
Add SDL_DISPLAY_USE_HARDWARE_ACCELEREATOR to be able to switch
enable/disable hardware accelerator.
Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
Split the SDL display driver in a top and bottom
to enable using it with embedded libCs.
Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
