Hi all, The class osg::TextureRectangle seems to be using an OpenGL extension, which is not supported in all OpenGL implementations. Unfortunately, it seems that osg::TextureRectangle checks for support of these extensions only when the texture is being applied (in TextureRectangle::apply), i.e. when it is already too late.
Is there a way to check in advance whether osg::TextureRectangle is supported, so that an application can decide whether to use osg::TextureRectangle or an alternative texture class (such as osg::Texture2D)? An obvious solution is to test if the required OpenGL extension is supported. If this is the only way to determine if osg::TextureRectangle is supported, then what is the preferred way of checking for OpenGL extensions in OSG? I know about osg::isGLExtensionSupported, which is used in TextureRectangle::apply, but I don't know where to get an OpenGL context handle such that the information returned by osg::isGLExtensionSupported actually applies to the OpenGL implementation which might later be used by TextureRectangle::apply. The documentation also seems to be unclear about this. Can anybody help? Thanks in advance, Florian _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
