Describes different techniques for compensating for pixel loss at the edge of the screen.
The final composited framebuffer for the screen is scaled so that all pixels lie in the area visible on the screen.available in ios 5.0 and later.declared in uiscreen.h.
The screen bounds are reduced in size so that all pixels in the framebuffer are visible on the screen.available in ios 5.0 and later.declared in uiscreen.h.
The application frame is reduced in size to compensate for overscan. content drawn outside the application frame may be clipped.available in ios 5.0 and later.declared in uiscreen.h.