Hi Robert & all,
I also got a problem with BIND_PER_PRIMITIVE (yes, I know I should not use it!
;) ). When having TRIANGLE_STRIP, with normals per primitive, I got one normal
per triangle strip, whereas OpenGL seem to say I should have one normal per
triangle. Am I wrong?
The geometry looks like :
Geometry {
// blah blah blah...
PrimitiveSets 3
{
DrawArrays TRIANGLE_STRIP 0 219
DrawArrays TRIANGLE_STRIP 219 19
DrawArrays TRIANGLE_STRIP 238 15
}
VertexArray Vec3Array 253
{
blah blah blah...
}
NormalBinding PER_PRIMITIVE
NormalArray UniqueID Vec3Array_1 Vec3Array 247
{
0 0 1
0 1 0
1 0 1
... and all other normals, which are not used at all.
}
}
In this case the first "DrawArrays" uses normal 0, the second uses normal 1...
I looked into ArrayDispatchers, but I was unable to find something usefult to
me.
Help, please?
Thanks.
Sukender
PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/
----- "Robert Osfield" <[email protected]> a écrit :
> Hi Don,
>
> On Tue, Sep 21, 2010 at 12:13 AM, Don Leich <[email protected]> wrote:
> > I confirmed that the bug persists in today's SVN trunk. In the
> example
> > already supplied the overall color is not applied when normals are
> > given as BIND_PER_PRIMITIVE.
>
> I've just tested svn/trunk and 2.9.3 and can confirm that there is
> different behaviour.
>
> I've also isolated the two geometries that use BIND_PER_PRIMITIVE and
> they just use this binding for normals, but have no colour array
> assigned at all. So... they will be inheriting their colour from
> other geometries in a completely undefined way.
>
> This to me doesn't look like a bug at all, but an issue with a
> under-defined scene graph, and just by luck it's worked before.
> Please assign colours to all the geometries that need it and then
> re-test.
>
> Robert.
> _______________________________________________
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