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narzoul / DDrawCompat

DirectDraw and Direct3D 1-7 compatibility, performance and visual enhancements for Windows Vista, 7, 8, 10 and 11
BSD Zero Clause License
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Tom Clancy's Rainbow Six Rogue Spear graphical glitches #113

Closed BEENNath58 closed 2 years ago

BEENNath58 commented 2 years ago

While playing Rogue Spear with the HW/SW renderer, some minor texture issues occur where they disappear completely.

This is how it looks: IMG20210912221139

This is the proper textures: IMG20210912221145

It would be great to eliminate this issue. Even greater would be, to eliminate additional major graphical glitches under Software Renderer while using resolution over 640x480 IMG20210912221344

narzoul commented 2 years ago

For the disappearing texture, try the FaultTolerantHeap shim from Microsoft ACT as mentioned in this old comment: https://github.com/narzoul/DDrawCompat/issues/2#issuecomment-280867054 I never had time or much patience to debug it since the shim fixes the issue anyway, and I always assumed it's a bug in the game that I couldn't fix from the wrapper.

I'd assume the software renderer is also a game specific bug, since there aren't any changes to the native Direct3D RGB software device in DDrawCompat. However, I'm not aware of any way to fix it either (FaultTolerantHeap doesn't help). Out of curiosity, why would you want to use it if the hardware renderer works?

BEENNath58 commented 2 years ago

Neat! The shim actually worked.

It would be great to have both renderers working, even if it not required. Lie we could then say Rogue Spear completely works on new Windows.

narzoul commented 2 years ago

I checked the software rendering in a WinXP VM and it has the exact same issues there with resolutions other than 640x480, so I'm pretty sure it's just broken in the game itself. It looks like it messes up the z-buffer via CPU access or something similar, so I don't think it can be fixed from a wrapper.