d912pxy - "DirectX9 to DirectX12 API proxy for Guild Wars 2"

d912pxy is a way to make games that use DirectX 9 use DirectX 12 instead, without changing any game code.

This is specifically designed for Guild Wars 2. You can try to use it with other games; it might work.

This project is in early development. Expect bugs, crashes, hangs, stalls and some other fun stuff.

WARNING: USE OF THIS SOFTWARE IS ENTIRELY AT YOUR OWN RISK!

Showcase

Profiling shows that the API overhead for d912pxy is up to 70% less than that of plain DirectX9. Real performance differs based on the scene and the hardware.

Benchmarking results on i7-7700/GTX960:

CPU-bound scenario

(running Mistlock Sanctuary)

@6.3k batches, all max, 1080p, v0.9.5.8a

dx9
  min FPS: 5.5
  max FPS: 21.5
dx12
  min FPS: 17.6
  max FPS: 26.6
boost:
  min FPS: +220%
  max FPS: +23%

GPU-bound scenario

(1h fractal runs)

@all max, 1080p, v0.9.6.2a

16.4% to 2.5% less frame time

calculated based on API profiling & metrics data

This is affected by performance recording, and should be better in normal situations

DX12:

https://cdn.discordapp.com/attachments/477036595019644928/539417113593380865/unknown.png

DX9:

https://cdn.discordapp.com/attachments/477036595019644928/539417612501647360/unknown.png

Video by reddit u/moriz0, running WvW in 4k: https://www.youtube.com/watch?v=RQAB7Ma20Ow&

Installing

Install instructions (English)

Known bugs

Bug: Losing focus in fullscreen can hang the system videofeed

Troubleshooting: If you encounter this, use Ctrl+Alt+Delete -> Logout for a soft reboot. Use windowed fullscreen as workaround.

Bug: ArcDPS doesn't work using chainloading

Workaround: Read this.

Troubleshooting

Case #1: Things are loading piece-by-piece

Case #2: Game crashes/hangs

Case #3: Visual errors

Case #4: Unnatural performance drops

Support the developer

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