# Tangent space generation failed!

**URL:** <https://forums.imgtec.com/t/tangent-space-generation-failed/626>\
**Category:** PowerVR Insider\
**Tags:** pvrgeopod\
**Created:** [March 9, 2010, 6:31am UTC](https://forums.imgtec.com/t/tangent-space-generation-failed/626 "2010-03-09T06:31:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![oskiller](https://avatars.discourse-cdn.com/v4/letter/o/47e85d/32.png) [@oskiller](https://forums.imgtec.com/u/oskiller)\
**Post date:** [March 9, 2010, 6:31am UTC](https://forums.imgtec.com/t/tangent-space-generation-failed/626/1 "2010-03-09T06:31:49Z")

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hi,guys

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I want to use normalmap for my model, so i need tangent data in my .pod file.
  

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but pvrgeopod will tell me "tangent-space generation failed" with some model.
  

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and sometimes it work just fine , but give me wrong tangent data (all tangent data was simple zero--0.00000000000) :(
  

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any idea?
  

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dear Gordon, can you help me? i have lots of models need tangent data ...
  

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should&nbsp;I&nbsp;mail you a model&nbsp;file for test ? thanks.
  

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I run latest pvrgeopod plugin with 3d max 9 on windows vista.
  

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and finally, please forgive me&nbsp;for my poor english :)
oskiller2010-03-09 07:33:53

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**Author:** ![GordonMaclachlan](https://avatars.discourse-cdn.com/v4/letter/g/c68b51/32.png) [@GordonMaclachlan](https://forums.imgtec.com/u/GordonMaclachlan)\
**Post date:** [March 22, 2010, 8:57am UTC](https://forums.imgtec.com/t/tangent-space-generation-failed/626/2 "2010-03-22T08:57:07Z")

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Sorry for not getting back to you sooner - if you can email a model to [devtech@imgtec.com](mailto:devtech@imgtec.com%20) then we’ll have a look at it.