September 2018
Intermediate to advanced
472 pages
15h 36m
English
Content preview from OpenGL 4 Shading Language Cookbook - Third Edition
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This technique is fairly simple and straightforward, and is a nice alternative to traditional blending techniques. It is a great way to make holes in objects or to present the appearance of decay. If your alpha map has a gradual change in the alpha throughout the map (for example, an alpha map where the alpha values make a smoothly varying height field), then it can be used to animate the decay of an object. We could vary the alpha threshold (0.15, in the preceding example) from 0.0 to 1.0 to create an animated effect of the object gradually decaying away to nothing.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.