[Bug 18225] HL2: Intro movie garbled with medium resolutions

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=18225





--- Comment #5 from Tobias Jakobi <liquid.acid at gmx.net>  2009-06-25 15:42:27 ---
Similar garbling (upsampling artifacts) happens for the intro and outro video
of Max Payne 2 (the demo works for that), when disabling ARB_npot and therefore
forcing the use of tex_rect.

The videos seem to have a native width of 640 pixels, so if you select a ingame
res of 640x480 the videos are rendered fine. Once you select a different res
the garbling becomes apparent. With a res with twice the native width (e.g.
1280x1024) you clearly see that the videos are rendered with simple "pixel
doubling", which translates to GL's nearest filter.

tex_rect is capable of bilinear (GL's linear) filtering, they just don't
support any mipmapping.

Current hack edits IWineD3DTextureImpl_BindTexture in texture.c and replaces
GL_NEAREST with GL_LINEAR and WINED3DTEXF_POINT with WINED3DTEXF_LINEAR in the
condnp2 handling branch. However this doesn't seem to have any effect on the
issue (it should though).

Replacing all entries of minMipLookup_noFilter (directx.c) with GL_LINEAR
restores correct rendering of the videos.
stefand suspect a driver bug concerning min/mag-filtering and base LOD.

Note to me: Try to write a GLUT testcase for this.

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