How does bump mapping work?

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Tags

1. #surface
2. #variation
3. #mapping
4. #perturbing
5. #simulating
6. #computer
7. #perturbed
8. #calculations
9. #wrinkles
10. #achieved
11. #normal
12. #graphics
13. #lighting
14. #technique
15. #bumps
16. #during
17. #common
18. #object
19. #normals
20. #using