The PNG Guide is an eBook based on Greg Roelofs' book, originally published by O'Reilly.

Color Insert: Progressive Alpha Blending

Figure C-1

Figure C-1: Demonstration of progressive alpha-blending against a simulated web-page background (generated by Chapter 14's rpng2 demo program). The left side shows the appearance of the partially transparent image after its first interlaced pass has been displayed, while the right side shows its seventh and final pass. (Click for full-scale, 2 MB version.)

Last Update: 2010-Nov-26