[Bug 14522] Spellforce has bad quality ground textures

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=14522

--- Comment #26 from Matteo Bruni <matteo.mystral at gmail.com> 2013-07-18 09:16:00 CDT ---
Created attachment 45326
  --> http://bugs.winehq.org/attachment.cgi?id=45326
Patch

This patch fixes the bug for me. Essentially the same texture is bound to
multiple samplers with different sampling parameters, we need something like
sampler objects to make that work right.

The patch as-is has a number of issues though. There are a bunch of
glTexParameteri calls in wined3d (e.g. in draw_textured_quad) which essentially
do nothing when a sampler object is bound, that needs to be fixed. Also the
patch adds some new state into wined3d_device and that pretty much goes in the
opposite direction of what Stefan has been doing lately. Moreover, it brings a
5-10% performance penalty on Nvidia for me, not sure if that's just because of
the sampler objects or (arguably) due to the additional state changes.

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