# Adding glow effects to any geometrical shape

**URL:** <https://discourse.libcinder.org/t/adding-glow-effects-to-any-geometrical-shape/496>\
**Category:** Using Cinder\
**Created:** [January 10, 2017, 5:30am UTC](https://discourse.libcinder.org/t/adding-glow-effects-to-any-geometrical-shape/496 "2017-01-10T05:30:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Immature](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.libcinder.org/immature/32/220_2.png) [@Immature](https://discourse.libcinder.org/u/Immature)\
**Post date:** [January 10, 2017, 5:30am UTC](https://discourse.libcinder.org/t/adding-glow-effects-to-any-geometrical-shape/496/1 "2017-01-10T05:30:36Z")

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Hi,

How to add glow effect across edges of any geometric figure ?

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**Author:** ![paul.houx](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.libcinder.org/paul.houx/32/31_2.png) [@paul.houx](https://discourse.libcinder.org/u/paul.houx)\
**Post date:** [January 10, 2017, 7:30am UTC](https://discourse.libcinder.org/t/adding-glow-effects-to-any-geometrical-shape/496/2 "2017-01-10T07:30:59Z")

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Hi,

see [my sample](https://github.com/paulhoux/Cinder-Samples/tree/master/BloomingNeon) to learn more this neat little trick. More background information can be found [here](http://http.developer.nvidia.com/GPUGems/gpugems_ch21.html).

-Paul