Re: [osg-users] setUseVertexBufferObjects(true) has no effect
Robert, OK, this works fine with the osg::Geometry I'm using now. Paul, thanks, I'll have a look. Cheers, Fred -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=30303#30303 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] setUseVertexBufferObjects(true) has no effect
Hi, setUseVertexBufferObjects(true) has no effect for me with the code below: Code: osg::Geode* geode = new osg::Geode(); geode-addDrawable(new osg::ShapeDrawable(new osg::Cylinder(osg::Vec3(4.4f,0.0f,0.0f),1.0f,1.4f))); geode-getDrawable(0)-setUseVertexBufferObjects(true); When I run this code with an OpenGL API tracer, I can see display lists are still being used (glNewList to build the display list, then glCallList to use it). This test is easy to reproduce with the osgShaders sample, in GL2Scene.cpp, CreateModel() can be changed to reflect the above code. I guess I must be doing something wrong to make use of VBOs. Any idea? Cheers, Fred [/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=30275#30275 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] setUseVertexBufferObjects(true) has no effect
Hi Fred, ShapeDrawable does not support vertex buffer objects as the vertex data is created on demand. Robert. On Mon, Jul 26, 2010 at 4:02 PM, Fred Smith osgfo...@tevs.eu wrote: Hi, setUseVertexBufferObjects(true) has no effect for me with the code below: Code: osg::Geode* geode = new osg::Geode(); geode-addDrawable(new osg::ShapeDrawable(new osg::Cylinder(osg::Vec3(4.4f,0.0f,0.0f),1.0f,1.4f))); geode-getDrawable(0)-setUseVertexBufferObjects(true); When I run this code with an OpenGL API tracer, I can see display lists are still being used (glNewList to build the display list, then glCallList to use it). This test is easy to reproduce with the osgShaders sample, in GL2Scene.cpp, CreateModel() can be changed to reflect the above code. I guess I must be doing something wrong to make use of VBOs. Any idea? Cheers, Fred [/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=30275#30275 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] setUseVertexBufferObjects(true) has no effect
Hi Fred -- If you want some basic shape support combined with use of buffer objects, you should consider osgworks.googlecode.com, which contains convenience functions to create some basic shapes using osg::Geometry objects (which supports use of buffer objects). If you need shape metadata (sphere radius, box extents, etc) you can store that information as UserData on the Geometry objects. -Paul Fred Smith wrote: Hi, setUseVertexBufferObjects(true) has no effect for me with the code below: Code: osg::Geode* geode = new osg::Geode(); geode-addDrawable(new osg::ShapeDrawable(new osg::Cylinder(osg::Vec3(4.4f,0.0f,0.0f),1.0f,1.4f))); geode-getDrawable(0)-setUseVertexBufferObjects(true); When I run this code with an OpenGL API tracer, I can see display lists are still being used (glNewList to build the display list, then glCallList to use it). This test is easy to reproduce with the osgShaders sample, in GL2Scene.cpp, CreateModel() can be changed to reflect the above code. I guess I must be doing something wrong to make use of VBOs. Any idea? Cheers, Fred [/code] -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=30275#30275 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- -Paul Martz Skew Matrix Software http://www.skew-matrix.com/ ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
