[Bug 45046] New: Skyrim SE: Shadow artifacts (missing handling of 'precise ' shader modifier)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=45046

            Bug ID: 45046
           Summary: Skyrim SE: Shadow artifacts (missing handling of
                    'precise' shader modifier)
           Product: Wine
           Version: 3.6
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: eldrad at autistici.org
      Distribution: ---

Skyrim SE shows flickering artifacts in shadows or textures, the problem seems
to be nvidia specific and due to missing 'precise' shader modifier handling.

Note I haven't been able to get a log pointing to the issue, but the same issue
was happening on dxvk and other frameworks, so I'm guessing it must be the same
problem and reporting here for awareness.

- https://github.com/doitsujin/dxvk/issues/189 (same issue that was resolved on
dxvk)
- https://www.youtube.com/watch?v=sPPESMCd5X8 (video showing the problem on
wined3d)
- https://www.youtube.com/watch?v=5Erb_3LFUCY (video showing the problem on
dxvk)

This seems tricky because the assembler output that wined3d seems to be parsing
doesn't have this flag since it's only in hlsl (afaics, but I'm not an expert
so I could be wrong). Wined3d is definitely not producing this modifier on it's
glsl shaders.

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