# Water demo && specular hightlight

**URL:** <https://forums.imgtec.com/t/water-demo-specular-hightlight/1548>\
**Category:** PowerVR Insider\
**Created:** [October 30, 2012, 6:46am UTC](https://forums.imgtec.com/t/water-demo-specular-hightlight/1548 "2012-10-30T06:46:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rubbio](https://avatars.discourse-cdn.com/v4/letter/r/e274bd/32.png) [@rubbio](https://forums.imgtec.com/u/rubbio)\
**Post date:** [October 30, 2012, 6:46am UTC](https://forums.imgtec.com/t/water-demo-specular-hightlight/1548/1 "2012-10-30T06:46:56Z")

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Hi,

how to add specular highlight in water demo?

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**Author:** ![JoeDavis](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/joedavis/32/71_2.png) [@JoeDavis](https://forums.imgtec.com/u/JoeDavis)\
**Post date:** [November 20, 2012, 3:49pm UTC](https://forums.imgtec.com/t/water-demo-specular-hightlight/1548/2 "2012-11-20T15:49:09Z")

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Hi Rubbio,  
  
There are a number of ways that this could be done. One option is to copy the technique from the FastTnL example in the SDK (\<PVR\_SDK\>SDK\_3.0ExamplesIntermediateFastTnL).  
  
Regards,  
Joe