Why are shaders called shaders?

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Tags

1. #simply
2. #reason
3. #handle
4. #tells
5. #lighting
6. #pipeline
7. #called
8. #program
9. #control
10. #effects
11. #often
12. #special
13. #pixel
14. #because
15. #computer
16. #these
17. #other
18. #graphics
19. #programs
20. #render
21. #there
22. #shader
23. #shading
24. #shaders