This might be want you are looking for: http://factor-language.blogspot.com/2007_08_01_archive.html
and http://factor-language.blogspot.com/2007/08/opengl-redraw-bug-on-windows.html Basically enable the scissor test, then tell OpenGl what part of the window to update when calling SwapBuffers. Not tried it myself though. 2009/3/26 Guy <g...@dvp.co.il>: > Frederic, > I think you can't limit the OpenGL drawing to a limited region of a window > HANDLE. You could embed a window in the region you want to use OGL, and just > draw to it. Or you could first draw the OGL/OSG code, and then get the window > handle and draw all your other stuff using GDI or whatever. > > Guy. > > --------- > > > hum, the (black) color was not the problem in itself :) > > If I do this (update from my whole code): > gc->setClearColor( osg::Vec4f(1.2f, 0.2f, 0.6f, 1.0f) ); > gc->setClearMask( 0) ; > > camera->setClearColor( osg::Vec4f(0.2f, 0.2f, 1.6f, 1.0f) ); > camera->setClearMask( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT ); > (that's to say: don't clear anything on gc, and fill background with > blue on camera), > > I have the camera successfully drawn at the right place, with blue > background. This is what I want for that camera. > BUT, the problem persists, i.e. all around the viewport, the whole > window is painted in black. (maybe mick jagger is singing too loud ?). > it is painted in pink if I enable the gc->setClearMask(GL_COLOR_BUFFER_BIT). > > I can't manage to make OSG only impact the camera viewport (my blue > rectangle) and leave the window around unchanged... > Did anyone achieve to display an osgViewer::Viewer at some small place > in a window without overwrite window content around? > > Fred > > > > 2009/3/25 Robert Osfield <robert.osfi...@gmail.com>: >> On Wed, Mar 25, 2009 at 3:03 PM, Frederic Marmond <fmarm...@gmail.com> >> wrote: >>> >>> hum, it didn't work :( >>> >>> both >>> // gc->setClearColor( osg::Vec4f(1.2f, 0.2f, 0.6f, 1.0f) ); >>> // gc->setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); >>> and >>> gc->setClearColor( osg::Vec4f(1.2f, 0.2f, 0.6f, 1.0f) ); >>> gc->setClearMask( 0 ); >>> >>> do the same: instead of the shiny pink color, the window is filled with >>> black >>> >>> any other suggestion ? >> >> Well you disable the clear colour in the camera's ClearMask so perhaps this >> is why it's just black. >> >> Robert. >> >> _______________________________________________ >> 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 > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- http://www.ssTk.co.uk _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
