February 2005
Intermediate to advanced
672 pages
20h 39m
English
Content preview from Advanced Graphics Programming Using OpenGL
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CHAPTER 4
Digital Images and Image Manipulation
Geometric rendering is, at best, half of a good graphics library. Modern rendering techniques combine both geometric and image-based rendering. Texture mapping is only the simplest example of this concept; later chapters in this book cover more sophisticated techniques that rely both on geometry rendering and image processing. This chapter reviews the characteristics of a digital image and outlines OpenGL’s image manipulation capabilities. These capabilities are traditionally encompassed by the pipeline’s “pixel path”, and the blend functionality in the “fragment operations” part of the OpenGL pipeline.
Even if an application doesn’t make use of sophisticated image processing, familiarity with ...
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