[Bug 6955] Graphical glitches in NOLF2 demo

wine-bugs at winehq.org wine-bugs at winehq.org
Tue Dec 15 08:19:27 CST 2009


http://bugs.winehq.org/show_bug.cgi?id=6955





--- Comment #31 from Henri Verbeet <hverbeet at gmail.com>  2009-12-15 08:19:27 ---
(In reply to comment #29)
> this might just be my ignorance, but aren't those "processes" being followed in
> the software rendering? I mean all one should need is a good understanding of
> OpenGL I should think.
Well, no. The patch attached to this bug only blends the vertices before
passing them to the hardware, it doesn't touch things like lighting or texcoord
generation. Implementing it in hardware means generating shaders to replace
fixed function vertex processing based on the various D3D device states, like
e.g. enabled lights, material settings, etc., and then adding vertex blending
support to that. The last part of adding vertex blending to those shaders is
about the same amount of work as the software implementation, but the first
part of building the infrastructure is a lot of work (although Stefan's
patchset already implements most of that).

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