Hi Dimi, The buffer object support in the OSG has been revamped and in theory should be robust and flexible... but like all code there is a chance for regressions so wide spread testing it neccessary. Whether in this instance there is an actual bug, or just a different behaviour I can't say as I haven't tested your code.
As a quick test I would suggest calling dirty on each array your modiy. Robert. On Thu, May 19, 2011 at 1:37 PM, dimi christop <[email protected]> wrote: > Hi, > > I recently upgraded my code base to 2.912 (Linux, GTX 280) , unfortunately my > GPU morphing code stopped working. > I use VBO, GLSL and vertex attributes to copy the changing morph shapes and do > the interpolation on the GPU. > > After searching for the problem I found that when I declared a geometry as VBO > // Disable Display lists and setup Vertex Buffer Objects > geom->setUseDisplayList (false); > geom->setUseVertexBufferObjects(true); > osg::VertexBufferObject* df = geom->getOrCreateVertexBufferObject(); > df->setUsage (GL_STREAM_DRAW); > > > the subsequent commands during the update which changed the vertexArray had no > effect and produced random triangles on the screen. > geom->setVertexArray(vcoords); > > Because of the many morph shapes, I have many vertex arrays preallocated and > pass them to the geometry based on a time. I do not copy assign to the vertex > array of the geometry for speed reasons. > As I said in the 2.8 version everything worked fine. > When change the code to issued a dirty on the vertex arrays > vcoords->dirty() > the shape morphed correctly but the color, normal, texcoord arrays (which do > not > morph) did not show up correctly. > > Has anyone any idea what changed between the 2.8-2.912 versions. I was under > the > impression that issuing a setVertexArray command > calls dirty() at least on the geometry array. > Is it therefore mandatory to issue a dirty() call for all arrays (color, > normal, > texcoords) assigned to the geometry? > > Please note then when I disable the VBO usage, a single dirty() call on the > vertexarray works and the other arrays show up normal. > > Thank you in advance > Dimi > _______________________________________________ > 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
