Hi Stephane, Stephane, try to put an empty shader program on the cow, just like this:
cow->getOrCreateStateSet()->setAttribute(new osg::Program(), osg::StateAttribute::ON); I think this could help you. And if not then just add an empty UniformList to the stateset of the cow. Best regards, Art --- Robert Osfield <[EMAIL PROTECTED]> schrieb am Do, 22.5.2008: > Von: Robert Osfield <[EMAIL PROTECTED]> > Betreff: Re: [osg-users] empty geode + shader + uniform = bug ? > An: "OpenSceneGraph Users" <[email protected]> > Datum: Donnerstag, 22. Mai 2008, 18:02 > Hi Stephane, > > Pressing 's' for stats reveals the problem too. > Looks like state is > leaking from the empty geode. This is certainly a bug, as > to it's > possible cause I can't answer. I'm afraid I can > only juggle so many > support items at one time so can't go chasing this bug > right now. > > Robert. > > On Thu, May 22, 2008 at 4:57 PM, Stephane Lamoliatte > <[EMAIL PROTECTED]> wrote: > > Hi Robert, > > > > There is another strange thing about this. > > If you run > > osgviewer scene.osg > > and you press the 's' key, you could see that > the statistics are red. So, > > the shader is applied on the statistics too. > > > > > > Robert Osfield a écrit : > >> > >> Hi Stephane, > >> > >> When I run > >> > >> osgviewer scene.osg > >> > >> I get a red cow, which looks correct. I'm > using the SVN version of > >> the OSG under 64bit Kubuntu 7.10 on a Quad core > Intel chip with NVidia > >> drivers/7800GT. > >> > >> Robert. > >> > >> On Thu, May 22, 2008 at 7:29 AM, Stephane > Lamoliatte > >> <[EMAIL PROTECTED]> wrote: > >> > >>> > >>> Hi Robert, > >>> > >>> OpenSceneGraph have a strange behavior when I > set a shader and an uniform > >>> variable on the state set of a geode which > have no drawable. > >>> > >>> I write a very simple osg scene file to show > you my problem (see the > >>> attachment). > >>> I have a group which have 2 children : > >>> * a geode without any drawable; > >>> * a proxy node which point to the > "cow.osg" file. > >>> > >>> When I set a simple shader with an uniform > variable on the state set of > >>> the > >>> geode, the shader is applied to the cow. > (strange behavior) > >>> When I remove the uniform variable (and hard > code the value of the > >>> uniform > >>> variable to the shader), the shader is not > applied to the cow. (standard > >>> behavior) > >>> > >>> So, do you have any idea to correct this bug ? > >>> > >>> Cheers, > >>> > >>> -- > >>> Lamoliatte Stephane > >>> R&D Engineer > >>> R.S.A. Cosmos > >>> Z.I. de la Vaure - B.P.40 > >>> 42290 Sorbiers, France > >>> Tél : +33 (0)4 77 53 30 48 > >>> Fax : +33 (0)4 77 53 38 61 > >>> > >>> > >>> Group { > >>> name "aGroup" > >>> Geode { > >>> name "anEmptyGeode" > >>> StateSet { > >>> Uniform { > >>> name "color" > >>> type vec3 1 FloatArray 3 > >>> { > >>> 1 0 0 > >>> } > >>> } > >>> Program { > >>> num_shaders 1 > >>> Shader { > >>> type FRAGMENT > >>> code { > >>> "uniform vec3 color;" > >>> "void main() {" > >>> " gl_FragColor = > vec4(color.rgb, 1.0);" > >>> "}" > >>> } > >>> } > >>> } > >>> } > >>> num_drawables 0 > >>> } > >>> > >>> ProxyNode { > >>> name "whatEverYouWant" > >>> FileNameList { > >>> cow.osg > >>> } > >>> } > >>> } > >>> > >>> > _______________________________________________ > >>> osg-users mailing list > >>> [email protected] > >>> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >>> > >>> > >>> > >> > >> _______________________________________________ > >> osg-users mailing list > >> [email protected] > >> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >> > >> > >> > >> > >> > > > > > > -- > > Lamoliatte Stephane > > Ingenieur R&D > > > > R.S.A. Cosmos > > Z.I. de la Vaure - B.P.40 > > 42290 Sorbiers, France > > Tél : +33 (0)4 77 53 30 48 > > Fax : +33 (0)4 77 53 38 61 > > > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org __________________________________________________________ Gesendet von Yahoo! Mail. Dem pfiffigeren Posteingang. http://de.overview.mail.yahoo.com _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
