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| Choosing a shadow map bias http://horde3d.org/forums/viewtopic.php?f=7&t=661 |
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| Author: | DarkAngel [ 03.03.2009, 02:58 ] |
| Post subject: | Choosing a shadow map bias |
I found this thread on gamedev interesting and thought I'd share it here: http://www.gamedev.net/community/forums ... _id=525805 These guys are trying to come up with a bias function based on the distance to the light, instead of using a constant bias value. |
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| Author: | swiftcoder [ 03.03.2009, 03:22 ] |
| Post subject: | Re: Choosing a shadow map bias |
That is very useful! I detest shadowmap-acne, and tend to avoid shadows where possible to side-step the issue entirely. This definitely merits some thought and testing. |
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| Author: | marciano [ 03.03.2009, 12:25 ] |
| Post subject: | Re: Choosing a shadow map bias |
Thanks for the interesting link. This subforum is definitely the right place for such things (actually there should be more link sharing  )I would say in the end the bias problem is closely related to the general EPSILON problem of floating point comparisons. Here is an interesting read: http://realtimecollisiondetection.net/pubs/GDC07_Ericson_Physics_Tutorial_Numerical_Robustness.ppt |
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