Emulator

But there is also a new driver for your video card available: http://www.nvidia.co.uk/object/win8-win7-winvista-64bit-320.49-whql-driver-uk.html But the chance is low that this will solve your problem.

Coincidentally, D3D9 isn't affected by this glitch.

Issue 4498 has been merged into this issue.

Found an old issue with the same exact symptoms and checked other games. This is not a one game issue or anything like that.

Don't ask me why, but following the suggestion here
https://groups.google.com/d/msg/directxdev/oEg9tkQz9to/zl8w9ZEQKxUJ
fixes the in-game corruption.

Specifically, changing
http://code.google.com/p/dolphin-emu/source/browse/Source/Plugins/Plugin_VideoDX11/Src/PixelShaderCache.cpp?r=ca22872daed7c384db350b2987b21ea92299a9e8#212
from
"Texture2DMS<float4, %d> Tex0 : register(t0);\n"
to
"Texture2DMS Tex0 : register(t0);\n"

Unfortunately, the change is not compatible with DX 10.0.

And it doesn't fix the Miis.

Too bad my knowledge of D3D/HLSL is limited and the documentation is such absolute poo-poo.

Better yet, in DX11/PixelShaderCache.cpp try replacing line 250
"const int l = sprintf_s(buf, 1024, reint_rgba6_to_rgb8_msaa, D3D::GetAAMode(g_ActiveConfig.iMultisampleMode));"
with
"const int l = sprintf_s(buf, 1024, reint_rgba6_to_rgb8_msaa, D3D::GetAAMode(g_ActiveConfig.iMultisampleMode).Count);"

and line 276
"const int l = sprintf_s(buf, 1024, reint_rgb8_to_rgba6_msaa, D3D::GetAAMode(g_ActiveConfig.iMultisampleMode));"
with
"const int l = sprintf_s(buf, 1024, reint_rgb8_to_rgba6_msaa, D3D::GetAAMode(g_ActiveConfig.iMultisampleMode).Count);"

@ limburgerite: Also see revision f9b0b0471b36. Your comment made me review that portion again and it was horribly wrong. I'm fairly sure that that revision fixes this issue, thanks to your poking it even made it into 4.0 on-time ;)

Still seeing it with revision f9b0b0471b36:
http://postimg.org/image/mnyxce021/dc845dc5/

I made sure to delete the shader cache.

I'll try the changes in comment #8 (if they aren't already in revision f9b0b0471b36).

I think this might be it:
http://code.google.com/r/limburgerite-dolphin-emu/source/detail?r=debab3ab544bb5bcba0691d0ca5a59f2e69b9cba&name=issue-6482

The temp texture used in the format conversions was being created as non-multisampled, and the shaders were trying to multisample it. BOOM!

I've tested it and even the Miis are fixed now. I can't say for sure this is the correct fix, but it sure looks like it's working.

Good catch. It also fixed the crashes that I get when enabling MSAA and format change emulation at the same time. It's indeed the correct thing to do and just a silly thing I missed. I'll try to get this one into 4.0 as well, but not sure if we're past the merge window yet. It'll definitely get applied to master though, so thanks! ;)