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VSE: make Wipe effect 6x-20x faster #115837

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Aras Pranckevicius merged 2 commits from aras_p/blender:vse-wipe-opt into main 2023-12-06 19:43:08 +01:00
Conversation 2 Commits 2 Files Changed 1 +139 -127
Aras Pranckevicius commented 2023-12-06 12:44:51 +01:00
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Wipe effect was completely single threaded. So multi-thread that. Additionally, simplify math done in Clock wipe code; asin() + hypot() + some checks is just atan2() really.

Applying Wipe to 4K UHD sequencer output, on Windows Ryzen 5950X:

  • Single/Double: 99.1 -> 9.3 ms (10.6x faster)
  • Iris: 153.3 -> 12.3 ms (12.4x faster)
  • Clock: 301.4 -> 14.5 ms (20.8x faster)

The same on Mac M1 Max:

  • Single: 74.5 -> 13.4 ms (5.6x faster)
  • Iris: 84.2 -> 14.3 ms (5.9x faster)
  • Clock: 185.3 -> 18.8 ms (9.8x faster)
Wipe effect was completely single threaded. So multi-thread that. Additionally, simplify math done in Clock wipe code; `asin()` + `hypot()` + some checks is just `atan2()` really. Applying Wipe to 4K UHD sequencer output, on Windows Ryzen 5950X: - Single/Double: 99.1 -> 9.3 ms (10.6x faster) - Iris: 153.3 -> 12.3 ms (12.4x faster) - Clock: 301.4 -> 14.5 ms (20.8x faster) The same on Mac M1 Max: - Single: 74.5 -> 13.4 ms (5.6x faster) - Iris: 84.2 -> 14.3 ms (5.9x faster) - Clock: 185.3 -> 18.8 ms (9.8x faster)
❤️ 1 🚀 4
Aras Pranckevicius added 2 commits 2023-12-06 12:45:01 +01:00
a7c815d5e7 VSE: speedup Wipe effect by multithreading 
4K UHD resolution, Windows Ryzen 5950X, applying wipe:
- Single 99.8 -> 9.3 ms
- Double 98.1 -> 9.3 ms
- Iris 153.3 -> 12.3 ms
- Clock 301.4 -> 21.1 ms
buildbot/vexp-code-patch-coordinator Build done. Details
33e73ad398 VSE: speedup Wipe Clock by simplifying math 
asin(y/hypot(x,y)) plus a bunch of quadrant checks is just atan2. So do
that instead.

4K UHD resolution, Windows Ryzen 5950X, clock wipe: 21.1 -> 14.5ms
Aras Pranckevicius changed title from WIP: VSE: make Wipe effect 10x-20x faster to WIP: VSE: make Wipe effect 6x-20x faster 2023-12-06 12:54:11 +01:00
Aras Pranckevicius commented 2023-12-06 12:54:23 +01:00
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@blender-bot build

@blender-bot build
Aras Pranckevicius added this to the Video Sequencer project 2023-12-06 12:54:54 +01:00
Aras Pranckevicius changed title from WIP: VSE: make Wipe effect 6x-20x faster to VSE: make Wipe effect 6x-20x faster 2023-12-06 13:47:07 +01:00
Aras Pranckevicius requested review from Richard Antalik 2023-12-06 13:47:21 +01:00
Richard Antalik approved these changes 2023-12-06 18:33:46 +01:00
Richard Antalik left a comment
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For patch I don't think I have any objections.
Just wanted to comment, that reading the code does hurt a little bit. So thanks for enduring that :)

For patch I don't think I have any objections. Just wanted to comment, that reading the code does hurt a little bit. So thanks for enduring that :)
Aras Pranckevicius commented 2023-12-06 19:42:10 +01:00
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Just wanted to comment, that reading the code does hurt a little bit. So thanks for enduring that :)

Hah yeah in wipe code specifically there's a lot of float temp1, temp2, temp3, temp4 variables all with wildly different meanings, because why would you name them after something they are when you can just do tempN, right :) A cleanup for some other day!

> Just wanted to comment, that reading the code does hurt a little bit. So thanks for enduring that :) Hah yeah in wipe code specifically there's a lot of `float temp1, temp2, temp3, temp4` variables all with wildly different meanings, because why would you name them after something they are when you can just do tempN, right :) A cleanup for some other day!
Aras Pranckevicius merged commit 06370b5fd6 into main 2023-12-06 19:43:08 +01:00
Aras Pranckevicius deleted branch vse-wipe-opt 2023-12-06 19:43:10 +01:00
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