Sonic Adventure 2 vertex shaders do not get captured properly

[joeyballentine]

Describe the bug

• In order for anything to be displayed in this game, one must enabled the option to capture vertex shaders (which is now on by default). However, remix does not actually properly capture the vertex shaders in this game. Instead, it just seems like it passes through the original graphics. Nothing, including the debug view, actually does anything.
• This happens in every version of remix, from the latest commits, back to the old versions.
• I don't think GPU matters here.
• The Steam version.

To Reproduce Steps to reproduce the behavior:

• You may need to launch the game directly into a level using the mod manager. (this is how i test the game out, since i think the menu crashes remix, but that was reported in a separate issue).
• To do this, install the mod manager, then go to the debug tab, set the level to city escape + sonic (or whatever level you want to enter) and press play.
• Then, it should be very obvious that the raster graphics are just being passed through.

Expected behavior

• I would expect for this game to have its shaders captured the same way other games do. Even games that entirely use shaders for rendering (like Spore) still get their shaders captured better than SA2.

I suspect this might not be possible to solve, but I figured I'd open an issue for it just in case.

NvRemixBridge.log d3d9.log sonic2app_d3d9.log

[nv-ajaus]

@joeyballentine can you please try explicitly setting the option to enable vertex shader capture (useVertexCapture = True)? Your log file includes the warning info: [RTX-Compatibility-Info] Skipping draw call with shader usage as vertex capture is not enabled. which I wouldn't expect if it was active.

Additionally, can you please make sure to try this with the most recent builds of dxvk-remix and bridge-remix? I tried to look up the commit mentioned in your log files and it seemed to point to a commit that was from a fork of the repo and not our main branch. If this is not the case, please let me know what builds you used.

[joeyballentine]

@nv-ajaus Sorry, I may have submitted an old log. Here are some definitely new logs, using the most recent builds of remix (both bridge and runtime) as of posting this. During this session, i toggled off and on the vertex capture setting. d3d9.log NvRemixBridge.log sonic2app_d3d9.log

And here are logs with the useVertexCapture enabled in rtx.conf. It made no difference in actual gameplay. d3d9.log NvRemixBridge.log sonic2app_d3d9.log

If you'd like, I could provide an apitrace if that would be helpful.

[joeyballentine]

Scratch that, apitrace does not seem to work with this game for some reason.

[NV-DM]

REMIX-2378 for tracking.