While the driver was already capable of processing `ARGB8888` data,
it did not actually show the alpha value in any way.
This change adds a checkerboard background that shows transparent
regions.
Signed-off-by: Martin Stumpf <finomnis@gmail.com>
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>
Using SDL_DISPLAY_ZOOM_PCT would cause mouse pointer/touch input
to not click at the correct position.
Signed-off-by: Jakob Krantz <mail@jakobkrantz.se>
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>
