Hi, again, all for 2.x
On Wed, 2009-12-02 at 13:51 -0200, Pablo Carneiro Elias wrote: > Hi all, > > we've recently found a small problem when using Foregrounds on a > viewport. The Foregrounds are not adjusted correctly when the window > is resized (using OSG::Window::resize()): the size gets smaller when > window grows and bigger when windows shrinks. Which window are you using ? > Thats the scenario: the Window resize() method, called when our window > is resized, schedules a resize using setResizePending( true ). The > isResizePending() flag is actually checked inside the doResizeGL() > method at OSGWindow.cpp (line 2331), which calls glViewport() is the > flag is true. But doResizeGL() is not called ever. correct, this is a leftover. The vieport setup is done deep inside the drawing backend. > A call for glViewport() is not being performed before drawing the > foreground, inside the render method of the viewport class. that should be ok, as long as the viewport has something to render, e.g. goes through the backend initialization. If not we might be in trouble. > The problem occurs at OSG tutorial applications as well. which one ? > Placing a glViewport() before OSGWindow::resize() solved the problem > on our application. that sounds like a PassiveWindow and a PassivewViewport. Which Viewport are you using ? If it is a PassiveViewport, than yes the app must make sure that the OpenGL viewport size is correct. > We haven't sent a patch because we're not totally sure about the best > place to put the call to doResizeGL(). it should not be needed. As said if it is an empty viewport (e.g. no scene) I have to think about it. kind regards, gerrit ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
