[Bug 19412] Red Alert 3: fails to render a character

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=19412





--- Comment #11 from Charles Davis <cdavis at mines.edu>  2009-07-28 14:30:37 ---
(In reply to comment #10)
> This is probably an interaction between PBOs and client storage. Although
> neither extension explicitly mentions this, it would make sense that you can't
> use both client storage and a PBO when specifying a texture image. The comment
> in surface_allocate_surface() seems to agree.
> 
> Unfortunately we don't use glCompressedTexSubImage2D() but
> glCompressedTexImage2D() in surface_upload_data(), which respecifies the
> texture. The comment there seems to indicate this was a workaround for a driver
> bug, but perhaps we should get rid of that. The other option would probably be
> to disable either PBOs or client storage for compressed textures if both
> extensions are available.
> 
> Stefan added the client storage code, so adding him to CC.

That makes sense--well, as much sense as I can make out of the extremely
complex wined3d code. (Not for OpenGL neophytes... at least I understand the
comments.) That also explains why it only happens on Mac OS (client storage is
one of Apple's GL extensions).

Seriously, how many people still have an ATI R200 chip? I don't. Then again, I
wonder, considering that Apple, not nVidia, wrote the Mac OS X GeForce drivers,
if their driver has many of the same quirks as their ATI drivers.

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