Hi Gordon, Paul,
This was a heartening thread as it prompted me to get back and try yet
again to get reflection mapped objects in Creator appearing that way in OSG.
I understand the modelling side of multitexturing in Creator (I hope)
but could never see the results in OSG based viewers when loaded as flt
or saved and loaded as osg/ive formats. The OSGExp project was such a
watershed in that department.
Having a read of the cow.osg sample data I see that there are
consistently missing attributes when exporting from openflight. I get
results similar to what I see in the Creator window when I add to my
destined environment/reflection map
TextureUnit[n]:
GL_TEXTURE_GEN_S ON
GL_TEXTURE_GEN_T ON
and a:
TexGen {
DataVariance STATIC
mode REFLECTION_MAP //or SPHERE_MAP
}
For reference, OSGExp, when exporting a reflection mapped object,
appears to include amongst many other things (perhaps just for good
measure?):
GL_TEXTURE_GEN_S ON
GL_TEXTURE_GEN_T ON
GL_TEXTURE_GEN_R ON
GL_TEXTURE_GEN_Q ON
TexGen {
mode SPHERE_MAP
}
Would this be an OpenFlight loader issue that is under consideration
with read/write and OpenFlight? I also notice that when writing osg
files that my texture attributes (min/mag filters) are largely ignored
and appear to be respected when writing ive files.
(Using release ver. 2.2.0)
Cheers
Garry
> Hi Paul
>
> Depends on what you mean by Sphere mapping :)
>
> OpenFlight and Creator support Spherical, Radial and Environment
> texture mapping among the normal texture methods in this case I think
> you mean(maybe) what Creator calls Environment mapping
>
> This is done in Creator very easily, through the texture tool box,
> select geom., select texture, in the case of Environment select the
> tool and your done and this can be seen in Creator ( Unlike the old
> days of Multigen II, we used the special 1/2 field to mark
> group/objects to be mapped nice shine environment, for metal, glass
> etc ),
>
> These methods when used add an entry to the Texture Mapping Palette
> with there type set to Spherical, Radial and Environment, so this
> should not be too hard to add (hopefully)
>
>
> __________________________________________________________ Gordon
> Tomlinson
>> Here's a Christmas gift -- the OSG cow converted to OpenFlight. This
>> was created using the new OSG OpenFlight export plugin, which is
>> currently in development and should be ready for some beta testing in
>> the February/March timeframe.
>>
>> Caveats:
>>
>> * To view this in OSG, use the SVN head. (This model requires
>> Continuation record support, which wasn't in OSG v2.2.)
>>
>> * There is no sphere mapping equivalent in OpenFlight (if I'm wrong,
>> please correct me) so you really don't want texture mapping. To
>> disable texture mapping in osgviewer, hit the 't' key. You should see
>> a lit white cow.
>>
>> Nonetheless, it's the cow converted to OpenFlight! Which is pretty
>> cool.
>>
>> Thanks to Bob Kuehne and Dave Wolfe for their help on this project so
>> far (and also to our client funding the project, who wishes to remain
>> anonymous).
>>
>> Paul Martz
--
Garry Keltie
garry. @rmit. .au
keltie edu
VR Centre - Research & Innovation
RMIT University
/ ... .... .. - / .... .- .--. .--. . -. . -..
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