Full-Screen Exclusive Mode (FSEM)FSEM was introduced back in J2SE 1.4 as a way of switching off Java's windowing system and allowing direct drawing to the screen. The principal reason for this is speed, an obvious advantage for games. Secondary benefits include the ability to control the bit depth and size of the screen (its display mode). Advanced graphics techniques such as page flipping and stereo buffering are often only supported by display cards when FSEM is enabled. FSEM was discussed in the context of 2D games in Chapter 4. The code described in this section uses passive rendering, which means that Java 3D is left in control of when to render to the screen.
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