[Bug 8051] Sims 2 demo exits prematurely

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=8051

--- Comment #132 from swswine at gmail.com ---
(In reply to Jason Mills from comment #130,  Luke Horwell from comment #131)

I do not see my patch as the fix, even as a workaround fix actually. It just
effectively makes possible to see in the log what features are missing. To fix
the problem, the features must be implemented (ProcessVertices in shader mode
at the first place, maybe something else). Once again, what's happening:

1. In the original wine state (even after workarounding crash on start), no
shaders for the object can be used because none of shaders pass validation. In
this state, the game fallbacks to the default "error" shader which draws red
models. My patch fixes this. After that the things may really get worse in
terms of gameplay (e. g. models not rendering at all), because the use of real
shaders trigger some features unsupported in wine. But the log now should be
full of indication what goes wrong and it is relatively easy to see which
features are missing).

2. In my version of Sims2 limiting shader version to 2 made things better and
models began to render OK. It does not mean it will help on any Sims2
installation and any hardware. Sims2 has the shaders code in the objects
definition in the game's resources, so games of different versions or just
using different mods may behave differently. Some of those resources also have
different shaders version for different capabilities (e. g, some may support
vs_3_0 and vs_2_0, and some just vs_3_0). Besides, the game has a complicated
features setup based on graphic card and it's capabilities detection (this can
be altered manually in game's text files).

So I think the feasible way to go is to fix ProcessVertices first (it seems
that even when I limit vertex shader version to 2.0 and get models rendered OK
initially it is still used within the game effects for which I also have
glitches). After that (along with some fix or workaround for max shader
constants and for shader validator interface which are currently in my patch)
the game will either work or can be further troubleshooted for remaining
missing features in wine.

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