Hi Viggo, The warning is exactly right, pbuffers don't suport multiple render targets, only FrameBufferObjects do.
Perhaps what you intend it not to use multiple render targets, in which case you should set the Camera attachment to COLOR_BUFFER rather than COLOR_BUFFER0, that later tells the OSG that you want MRT and will be using glFragColor[] in your shaders. Also the Camera::setDrawBuffer(GL_COLOR_ATTACHMENT0_EXT) is inappropriate for pbuffers. Robert. On Fri, May 30, 2008 at 1:18 PM, Viggo Løvli <[EMAIL PROTECTED]> wrote: > Hi, > > I want to render to a floating point buffer, and I set things up like this: > > tex->setInternalFormat( GL_LUMINANCE16F_ARB ); > tex->setSourceFormat( GL_RED ); > tex->setSourceType( GL_FLOAT ); > > camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT ); > camera->attach( osg::Camera::BufferComponent( osg::Camera::COLOR_BUFFER0 ), > tex ); > camera->setDrawBuffer( GL_COLOR_ATTACHMENT0_EXT ); > > My fragment-shader that write to the surface output the value this way: > gl_FragData[0].r = 1.0; > > Another fragment-shader reads the surface this way: > value = texture2DRect( id, gl_FragCoord.xy ).r; > > I get the following output when I try to run my app: > "Warning: RenderStage::runCameraSetUp(state&) Pbuffer does not support > multiple color outputs." > > My app runs, but nothing is written to the texture. > > Is it possible to set up a surface that holds one channel (GL_RED) which is > an unsigned int of 32 bit resolution? I'd rather use that than a float :-) > > Viggo > > ________________________________ > Få Hotmail du også. Windows Live Hotmail nå med 5000 MB gratis > lagringsplass. > _______________________________________________ > 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
