Missing Particle Effects in Sonic Adventure 2

[TBirdSoars]

Some particle effects are missing from stages in Sonic Adventure 2 when using DXVK, such as the smoke effects at the start of the stage "Iron Gate":

Without DXVK:

With DXVK:

Software information

Sonic Adventure 2, Steam, 32-bit, D3D9, Windowed, 1280x720

System information

• GPU: RTX 2070 Super
• Driver: 512.77
• Windows 10
• DXVK version: Artifacts (Package) 1241, also occurs on 1.10.1

Apitrace file(s)

https://mega.nz/file/bOJDjK5b#PhHebE2q_OuGQUBuBX7oQunqoMczGL2tSiDjtJlt95M

Log files

sonic2app_d3d9.log

[Blisto91]

Hi there. I will try to test this later on linux when i have time.
In the mean time can you check if anything changes when you make a file called dxvk.conf next to the games .exe and insert

d3d9.floatEmulation = Strict

To verify that the game picks up the conf file you can also add dxvk.hud = 1 and check that the hud shows up ingame.

[TBirdSoars]

I've added dxvk.conf to the game folder and the DXVK HUD does appear.

The particle effects reappear with d3d9.floatEmulation = Strict, as well as when set to True and Auto. According to the log, it looks like that value was being set to False without dxvk.conf.

[Blisto91]

Thanks for testing.
The current value is to work around issues in the game from the days of yore misyltoad/d9vk#292

But back then strict wasn't a option so we just need to verify it doesn't regress anything else.

I will check it out here later on Linux/windows when i have time. You are ofc also welcome to report anything odd you notice when playing with it set to strict

[K0bin]

Can't reproduce:

[Blisto91]

Can reproduce here.
This was with proton 7.0-3RC, amd R9 380 and mesa 22.1.1

DXVK

WINED3D

Edit: Tho it does not reproduce if i select proton 7.0-2.

[K0bin]

Can you try #2677? You can find a build here: https://github.com/doitsujin/dxvk/actions/runs/2477933077

Please make sure it doesn't bring back this issue: misyltoad/d9vk#292

[Blisto91]

@TBirdSoars May i also say thanks for a nicely made and filled out issue.

[TBirdSoars]

@K0bin I'm not getting that issue with #2677. I've heard of that issue before, though I've never personally encountered it. I could be wrong, but I thought that issue was GPU-dependent, only occurring on systems with integrated graphics. It should be fixed for anyone using the SA2 Mod Loader: X-Hax/sa2-mod-loader@13d5185