Hi Leyland
> Actually the reason is quite simple, I believe. If you are just setting it to
> draw wireframe instead of filled, and not actual calculating the wireframe
> then, in OpenGL, its probably drawing every polygon as a wireframe (strips
> may be treated diffrently). What you end up with is, if 2 polys share the
> same edge, that line is drawn twice (one for each poly). I'm not to familiar
Well overdraw happens greatly in filled mode, too. So I don't think that's
the reason. Besides two lines instead of one filled leads to this
tremendous speed loose? I could think that the OpenGL driver for the GTS2
is not well optimized for line drawing.
> I have one question, are you drawing backfaces? Have you tried turning
Nope I have backface culling on.
> asking, I am just curious about the edges of objects when you do this in the
> D3D version.
I don't know what you actually want to hear, but it works. Of course it
only works properly for solid surfaces, the known problems with BFC. So no
Hidden Line Removal if you thought about that.
EOF,
J.D.
--
Realtime Raytracer in JAVA
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