DirectX shadow mapping dynamic bias

Graphics and GPU Programming Programming

Started by Sneezy May 10, 2011 06:03 PM

1 comment, last by Sneezy 12 years, 11 months ago

1,368

Author

May 10, 2011 06:03 PM

Hi,

I'm working on a small project and i'm having trouble dealing with the shadow acne caused from the terrain on the terrain itself.
By adding a bias i can eliminate those unwanted acne zones. But i'm getting alot of peter panning because it's a mountain terrain.

Is there a way to calculate a dynamic bias.

bubu LV

1,436

May 10, 2011 07:06 PM

Yes, it is possible. I suggest reading "Normal Offset Shadows":
http://www.dissidentlogic.com/images/NormalOffsetShadows/GDC_Poster_NormalOffset.png (4.7 MB file)
http://www.dissidentlogic.com/#Normal Offset GDC Materials