Hi Terry, I haven't heard of problems like this before. The OSG itself doesn't change other than having different viewport sizes when resizing so I wouldn't expect problems on the OSG side.
My best guess would be an OpenGL driver bug, especially w.r.t the texture clamping. Slow down possibly could be caused by memory limitations on the GPU causing geometry and textures being displaced by a large frame buffer. However, a frame buffer change in size shouldn't cause that much of a memory displacement., so again it sounds like an OpenGL driver issue. What drivers are you working with? Robert. On 10/26/06, Terry Welsh <[EMAIL PROTECTED]> wrote:
Sorry if this it off-topic, since I believe it's an NVidia driver issue, but I thought I would ask here since I've only experienced it running OSG apps on NVidia. When running large terrain databases with gobs of geometry and texture, I sometimes resize the window. Occasionally, when resizing from small to larger, my framerate drops way down around 1Hz and all my textures appear to be getting drawn with GL_CLAMP instead of GL_CLAMP_TO_EDGE or GL_REPEAT. It looks like this because I start to see the black border pixel color being pulled in. Has anyone else had this problem or know anything about it? -- Terry Welsh - mogumbo 'at' gmail.com www.reallyslick.com | www.mogumbo.com _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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