244 CHAPTER 7: Well-Rendered Miscellany^
Summary
In this chapter, we covered a number of extra tricks to add more realism to an OpenGL
ES scene. First were frame buffer objects that let you draw to multiple OpenGL frames
and merge them together. Next came lens flares that can add visual drama to outdoor
scenes, followed by reflections and stencils that are heavily used by Apple in a lot of its
UI design. We ended with one of the many ways shadows can be cast against a
background using shadow projection. Next, some of these tricks will be applied to our
little solar-system project.