Hi Jefferson, When using a shader that expects a texture, you must supply a texture or the result is undefined. I think with most graphics cards the texture read just results in black. So if you want to have models that don't have a specific texture you should: a) use another shader that doesn't do a texture read, or b) set a simple default texture (for example, a 1x1 white texture) on the root node of your scene.
- Terry > Message: 4 > Date: Fri, 31 Oct 2008 23:30:23 -0300 > From: "Jefferson Pinheiro" <[EMAIL PROTECTED]> > Subject: [osg-users] Untextured materials = pure black > To: [email protected] > Message-ID: > <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="iso-8859-1" > > Every material that has no texture associated becomes completely black when > I do one of the following: > > - change the shadow technique from ShadowMap to SoftShadowMap > - add any of the GLSL bloom shader I found on the net ( > http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=27976&postdays=0&postorder=asc&start=0or > http://www.gamedev.net/community/forums/topic.asp?topic_id=395186) > > Any idea why this is happening? > > Details: > > I have a single light, declared thusly: > > osg::Vec3 lightPosition(40000,40000,80000); // my prog's scale is big > osg::LightSource* ls = new osg::LightSource; > ls->getLight()->setPosition(osg::Vec4(lightPosition,1)); > ls->getLight()->setAmbient(osg::Vec4(0.5,0.5,0.5,1.0)); > ls->getLight()->setDiffuse(osg::Vec4(0.9,0.9,0.9,1.0)); > shadowedScene->addChild(ls); > > I'm posting direct links to the shaders, case you're lazy to open those ones > :) > > http://magiadosdoces.com/temp/PP_GL_Bloom1.fx > http://magiadosdoces.com/temp/PP_GL_Bloom2.fx > http://magiadosdoces.com/temp/PP_GL_Bloom3.fx > http://magiadosdoces.com/temp/PP_GL_Bloom4.fx > http://magiadosdoces.com/temp/shader.frag > > And this is how I'm loading the shaders: > osg::ref_ptr<osg::StateSet> stateSet(root->getOrCreateStateSet()); > osg::Program* program = new osg::Program; > osg::Shader* frag = new osg::Shader( osg::Shader::FRAGMENT ); > frag->loadShaderSourceFromFile("Shaders/shader.frag"); > program->addShader(frag); > stateSet.get()->setAttributeAndModes(program, osg::StateAttribute::ON); > > I'm using OSG 2.6, Windows Vista 64, Geforce 8800M GTS. > > Oh and by the way, the bloom shader effect doesn't works even on the > textured surfaces. They simply remain the same. Image: > http://magiadosdoces.com/temp/car.jpg > > Thanks, > Jefferson > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/attachments/20081031/e7d8b42c/attachment-0001.htm> _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
