The
'ray of god' effect
Light shafts
This effect is taken from nVidia GPU Gems 3 book : a post processing effect to generate light shafts due to the sun light scattering in the air which contain, for example, gas molecules.
The implementation is the same eccepted that I add an extra blur pass to avoid visible arctifacts due to a limited number of samples. I also generate a fake sky : you can control sun altitude by using '+' and '-' key.
Download
source and executable
|
The
'ray of god' effect |
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Without
the extra blur pass |
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With
the extra blur pass, the resulting image is softer |
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As
a post process, the effect is not looking good when you look outward the
sun |