Customizing Qt to create first class graphical experiences on highly customized hardware

on YouTube ↗54m

" summary

Describes hacking Qt to run on devices with no GPU or framebuffer by writing a custom kernel framebuffer driver, an EGL native pixmap integration and a Qt platform plugin that maps rendering into physical memory, yielding a 60 Hz tear-free analog clock across two 4K screens. Shows a separate port that fakes OpenGL to build QtQuick then implements a threaded software renderer on a 36-core tiled CPU and a triple-buffering via IPC scheme to get smooth multi-screen animation.

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" chapters (44)

1. 0:00Intro
2. 0:40Agenda
3. 1:15Introduction
4. 2:52What does Cisco build
5. 3:44Selecting hardware
6. 4:42Reducing memory footprint
7. 5:19Cisco Csquare 620
8. 7:48No new UX
9. 8:31The beginning of the saga
10. 9:40Making our own display driver
11. 11:06Creating a pixmap surface
12. 11:54Creating a textmap surface
13. 12:13Creating our own display driver
14. 14:06Integrate with VPS
15. 15:01Analog Clock
16. 16:33Cisco SX80
17. 18:30Tiled DX
18. 19:49MK Specs
19. 21:14MK Implementation
20. 21:51Custom Tool Chain
21. 23:54Custom Qt
22. 24:58Context Factory
23. 28:42Graphical Interface
24. 30:52Overdraw Optimization
25. 32:19Custom Painting
26. 32:36Custom Paint Engine
27. 32:56Dual Screen 60fps
28. 33:46Cisco Room Kit
29. 35:11Animations
30. 36:27Multiscreen animation
31. 37:18Rendering to multiple screens
32. 38:22Scene Graph
33. 39:03Bypassing Rendering
34. 39:33Callback
35. 39:51Open Source
36. 40:29Color Space
37. 41:42Shader Effect
38. 43:12Canvas
39. 45:16Embedded Systems
40. 47:00The inevitable saturation rule
41. 48:53The hardware
42. 51:15Customization
43. 51:39Commercial success
44. 52:14Running off with cool ideas

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