Hi MT, If you open boat.3ds in osgviewer you will notice that the model itself is white. It doesn't have any textures on it and it's there purely as a test case for the collision. But yes the default shader has been added to it.
> Will you please give us a example about how to add a model to the > oceanScene to keep what they are? The terrain is an external model that has a custom shader applied to it, you can look at that. Alternatively look at the default shader source. K. 2009/11/3 Tian Ma <[email protected]>: > Hi Kim: > > I have downloaded the newest version through SVN, and also compiled the > code successfully. > > When I turn on the oceanExample's "testCollision", I found that the > "boat.3ds" model is just white, the same situation I met before. Is this what > the example just want to show us? > > In the example, you did not add any "shader" to the model. Does this mean > that: a default shader was added to the model? But why the model looks just > white? > > Will you please give us a example about how to add a model to the > oceanScene to keep what they are? > > > Regards, > > MT > > > Kim Bale wrote: >> Hi MT, >> >> For the reasons I just gave, you can't add objects to the scene and >> have the full compliment of effects without either using the default >> shader or using your own shader implementation. >> >> Reflections/refractions etc will continue to work since they act on >> the ocean surface and not the model. However, other such as glare, >> depth of field, light scattering, fogging etc will not as they act on >> the models themselves. >> >> However, it is pretty straight forward to duplicate a subset of fixed >> pipeline functionality within a shader and then add the relevant >> osgOcean shader effects to it, you can just copy functions from the >> default shader and mix them in with the result of your shader. >> >> K. >> >> >> 2009/11/2 Tian Ma <>: >> >> > Hi Jan,Kim: >> > >> > Thank you a lot. >> > >> > Kim, does it means that: I can never keep the models looks like what >> > they are before? And I have to program shaders for every loaded models, in >> > order to have reflect or other effects? >> > >> > I want to know that: is there a simple way to make the models just >> > look like what they are? >> > >> > >> > >> > Kim Bale wrote: >> > >> > > Hi Jan, Tian, >> > > >> > > osgOcean uses shaders for pretty much every effect in the scene - >> > > fogging, depth of field, glare, lighting etc. If objects that are >> > > added to the scene are to look consistent with the ocean effects they >> > > will require a shader to be applied that takes into account these >> > > effects. This is particularly necessary if the fullscreen effects are >> > > used as they require the alpha component of the frame buffer to work. >> > > >> > > In order to address this issue, OceanScene will apply a default shader >> > > to objects added as children (default_scene.frag & vert) which >> > > illustrates how to use the uniforms supplied by osgocean (prefixed >> > > osgOcean_* ) in conjunction with your own shader. Since I could not >> > > anticipate the many wierd and wonderful ways that shaders can be used >> > > it only offers a very basic implementation (1 texture unit, limited >> > > phong lighting etc) and should be seen as a shader to customise and >> > > build on yourself. >> > > >> > > You can override the default shader either by attaching a new program >> > > to the object you wish to use in the scene or by using this function >> > > in OceanScene: >> > > >> > > /** Override the default scene shader for custom shaders. >> > > * If custom shaders are required for individual nodes add them >> > > before adding to the OceanScene. >> > > * Dirties state. >> > > */ >> > > void setDefaultSceneShader( osg::Program* program ) >> > > { >> > > _defaultSceneShader = program; >> > > _isDirty = true; >> > > } >> > > >> > > Alternatively you can turn the default shader off completely with >> > > setter in OceanScene. >> > > >> > > Regards, >> > > >> > > Kim. >> > > >> > > >> > > >> > > >> > > >> > > >> > > 2009/11/2 Jan Ciger <>: >> > > >> > > >> > > > "Tian Ma" <> wrote: >> > > > >> > > > >> > > > > Hi, >> > > > > >> > > > > When I load a model into the osgOcean scene, the model looks >> > > > > white all >> > > > > over, without any material. Anybody knows why? >> > > > > >> > > > > >> > > > >> > > > Yes, I have seen the same thing. I believe that the shaders applied by >> > > > osgOcean are responsible and are not passing the the vertex colors >> > > > along. >> > > > I have yet to check the shader code, though. >> > > > >> > > > Regards, >> > > > >> > > > Jan >> > > > >> > > > _______________________________________________ >> > > > osg-users mailing list >> > > > >> > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > > > >> > > > >> > > > >> > > > >> > > _______________________________________________ >> > > osg-users mailing list >> > > >> > > 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=19021#19021 >> > >> > >> > >> > >> > >> > _______________________________________________ >> > osg-users mailing list >> > >> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > >> > >> _______________________________________________ >> osg-users mailing list >> >> 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=19090#19090 > > > > > > _______________________________________________ > 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
