Hi Robert, I may need a little guidance on which file to look in to see how the textures are being loaded and handled during the load process. Do you know off the top of your head where I should be looking?
Thanks, Brad --- RSC BDC > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:osg-users- > [EMAIL PROTECTED] On Behalf Of Brad Colbert > Sent: Wednesday, September 06, 2006 3:48 PM > To: osg users > Subject: RE: [osg-users] OSGDEM database is black where alpha < 1.0 > > Hi Robert, > > I'm starting to suspect maybe the osga loader or maybe OSG (cvs). As I > mentioned before the database appears correct when generated and viewed > from OSG v1.0 but when I try to view the v1.0 database in OSG (cvs) I > get the same result of blackness wherever alpha < 1.0. > > I'll keep poking around, but feel free to let me know if I'm on a wild > goose chase ;) . > > Thanks, > Brad > > --- > RSC > BDC > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:osg-users- > > [EMAIL PROTECTED] On Behalf Of Robert Osfield > > Sent: Wednesday, September 06, 2006 12:40 PM > > To: osg users > > Subject: Re: [osg-users] OSGDEM database is black where alpha < 1.0 > > > > Hi Brad, > > > > Its a while since I did any RGBA work with osgdem as almost all the > data I > > have to push through it is simple RGB. I do think once I had RGBA > working > > though... Anyway you'll be on a "not heavily used/tested path" of > > osgdem/osgTerrain so there may be gotcha's out there. > > > > I don't think it'll be the compression that is the problem, but > perhaps it > > could be.. Compression is used by default, but you can turn it off, > for > > instance try using the --RGBA option. > > > > If this doesn't solve the problem then we'll need to dig a little > deeper. > > > > Robert. > > > > > > On 9/6/06, Brad Colbert <[EMAIL PROTECTED]> wrote: > > > > Hi Folks, > > > > Has anyone else out there run into this problem: > > > > I am generating an .osga database using OSGDEM. The imagery has > > four > > components (Red, Green, Blue, Alpha) but my database is black > > wherever > > the alpha is < 1.0. What would cause this? Is it texture > > compression, > > which I hope isn't being used? > > > > When I use a shader to just show the alpha layer, it's all > white. > > Showing just one of the color layers shows that they are black > where > > the > > imagery has alphas of < 0.0. > > > > When I use the same imagery to build a database in OSG 1.0 I get > the > > alpha values, but loading that database into an application I > have > > built > > against CVS OSG, I get the same black behavior. Strange. Any > > ideas? > > > > -B > > > > --- > > Renaissance Sciences Corporation > > O/M: 480 290-3997 > > F: 425 675-8044 > > > > _______________________________________________ > > osg-users mailing list > > osg-users@openscenegraph.net > <mailto:osg-users@openscenegraph.net> > > http://openscenegraph.net/mailman/listinfo/osg-users > > http://www.openscenegraph.org/ > > > > > > _______________________________________________ > osg-users mailing list > osg-users@openscenegraph.net > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
