I think this anwers your question: http://www.gamedev.net/topic/544990-gl_max_texture_units-is-wrong/
Cheers, WL 2013/12/16 Daniel Schmid <daniel.sch...@swiss-simtec.ch> > Interesting. So could this be a bug in osg? > > Did you try to query GL_MAX_TEXTURE_UNITS and check if it says 4 ? I > wonder if this value does not only mean maximum number of multitexture > units, but also that only the lowest 4 units are capable of beeing used for > multitexturing! This would kind of be an answer... > > > > Wojtek wrote: > > Hi Daniel, > > > > I confirm your observation. I, however, do not agree that its a TexGen > problem. Frankly I do not know what it is, and I had no time to > investigate, but I think its maybe relate to TexEnv settings. I only made a > following test: I zeroed a spotlight texture (memset( image->data(), 0, > image->getTotalSizeInBytes() );). In this case no light should be cast on > terrain no matter if texgen is set or not, because texcoords should not > matter if texture is black everywhere. Yet the problem is the same. For > stages above 3 terrain is brightly lit. So it looks to me like an issue > with applying or blending the texture on stage 4 and more... Its not a > problem of coord generation its the problem of texture not used correctly... > > > > > > Cheers, > > Wojtek > > > > > > > > 2013/12/16 Daniel Schmid < ()> > > > > > Hi Wojtek, would you mind doing the simple test with the sample > program osgspotlight and the modifications I documented? I wonder if you > get the same different results as soon as you use texture units from 4 and > above. > > > > > > Cheers, > > > Daniel > > > > > > ------------------ > > > Read this topic online here: > > > > > > http://forum.openscenegraph.org/viewtopic.php?p=57677#57677 ( > http://forum.openscenegraph.org/viewtopic.php?p=57677#57677) > > > > > > > > > > > > > > > > > > _______________________________________________ > > > osg-users mailing list > > > () > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org( > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org) > > > > > > > > > > > > > > > ------------------ > > Post generated by Mail2Forum > > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=57679#57679 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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