September 2018
Intermediate to advanced
472 pages
15h 36m
English
Content preview from OpenGL 4 Shading Language Cookbook - Third Edition
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Creating a disintegration effect
It is straightforward to use the GLSL discard keyword in combination with noise to simulate erosion or decay. We can simply discard fragments that correspond to a noise value that is above or below a certain threshold. The following image shows a teapot with this effect.
Fragments are discarded when the noise value corresponding to the texture coordinate is outside a certain threshold range:
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