Name: Jonathan Lindquist Occupation: Technical Artist Company: Epic Games Duties: Author shaders Generate art Write scripts Miscellaneous tasks

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2 Fortnite s Vertex Shaders Introduction : Personal Name: Jonathan Lindquist Occupation: Technical Artist Company: Epic Games Duties: Author shaders Generate art Write scripts Miscellaneous tasks Previous Co.: Raven Software

3 Fortnite s Vertex Shaders Introduction : Project Stylized Action Co-operative Building

4 Fortnite s Vertex Shaders Introduction - Project

5 Fortnite s Vertex Shaders Outline Bounce effects Stylized culling Self-building player walls Conclusion

6 Fortnite s Vertex Shaders Bounce Effects Early Prototype

7 Fortnite s Vertex Shaders Bounce Effects

8 Fortnite s Vertex Shaders Bounce Effects

9 Fortnite s Vertex Shaders Bounce Effects

10 Fortnite s Vertex Shaders Outline Bounce effects Stylized culling Self-building player walls Conclusion

11 Fortnite s Vertex Shaders Stylized Culling Early Prototype

12 Fortnite s Vertex Shaders Stylized Culling

13 Fortnite s Vertex Shaders Stylized Culling

14 Fortnite s Vertex Shaders Outline Bounce effects Stylized culling Self-building structures Conclusion

15 Self-Building Structures : Intro

16 Self-Building Structures : Intro Goals : Build structures in-game Visually indicate structure health Create an efficient system

17 Self-Building Structures : Intro

18 Self-Building Structures : Intro

19 Self-Building Structures : Scripting Scripting Model Transformations Translations Rotations Animation Secondary motion Masking

20 Self-Building Structures : Scripting

21 Self-Building Structures : Scripting Early Prototype

22 Self-Building Structures : Scripting

23 Self-Building Structures : Scripting

24 Self-Building Structures : Script Modifications Object Data Stored: Random value Pivot position Axis of rotation Animation Order 1-bit flight path Number of boards

25 Self-Building Structures : Script Modifications Tips : UV values are inaccurate Avoid unnecessary scripting Make debugging assets simple Efficient data layout

26 Self-Building Structures : Model Transformations Scripting Model Transformations Translations Rotations Animation Secondary motion Masking

27 Self-Building Structures : Model Position Offsets

28 Self-Building Structures : Model Position Offsets

29 Self-Building Structures : Model Position Offsets

30 Self-Building Structures : Model Position Offsets

31 Self-Building Structures : Value Animation Elements Scripting Model Transformations Translations Rotations Animation Secondary motion Masking

32 Self-Building Structures : Model Rotation

33 Self-Building Structures : Animation Scripting Model Transformations Translations Rotations Animation Secondary motion Masking

34 Self-Building Structures : Animation

35 Self-Building Structures : Animation

36 Self-Building Structures : Animation

37 Self-Building Structures : Secondary Motion Scripting Model Transformations Translations Rotations Animation Secondary motion Masking

38 Self-Building Structures : Secondary Motion

39 Self-Building Structures : Secondary Motion

40 Self-Building Structures : Secondary Motion Final Anim= (Anim Gradient * 3D Falloff) + previously calculated Anim *

41 Self-Building Structures : Secondary Motion

42 Self-Building Structures : Secondary Motion Scripting Model Transformations Translations Rotations Per-board animation Secondary motion Masking

43 Self-Building Structures : Masking Masking value = clamp ((Z test + (1-current animation value)),0,1)

44 Self-Building Structures : Notes Notes: Collision Bounding Box Performance Normals

45 Fortnite s Vertex Shaders Overview Bounce effects Stylized culling Self-building structures Conclusion

46 Conclusion Conclusion: Cost effective Unique capabilities Gameplay limitations

47 Conclusion Questions?

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49 Fortnite s Vertex Shaders Backpack Effect

50 Fortnite s Vertex Shaders Backpack Effect

51 Fortnite s Vertex Shaders Backpack Effect

52 Fortnite s Vertex Shaders Backpack Effect

53 Fortnite s Vertex Shaders Backpack Effect

54 Fortnite s Vertex Shaders Backpack Effect

55 Fortnite s Vertex Shaders Backpack Effect

56 Fortnite s Vertex Shaders Backpack Effect