FGFS-4.1/OpenSceneGraph
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Added basic --pbuffer width height support

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This commit is contained in:
Robert Osfield 2008-05-26 15:41:54 +00:00
parent 7aac7ef381
commit 57ce3f820e
1 changed files with 52 additions and 1 deletions
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53
examples/osgscreencapture/osgscreencapture.cpp
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@ -686,6 +686,36 @@ int main(int argc, char** argv)
while (arguments.read("--triple-pbo")) mode = WindowCaptureCallback::TRIPLE_PBO;
unsigned int width=1280;
unsigned int height=1024;
osg::ref_ptr<osg::GraphicsContext> pbuffer;
if (arguments.read("--pbuffer",width,height))
{
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->red = 8;
traits->green = 8;
traits->blue = 8;
traits->alpha = 8;
traits->windowDecoration = false;
traits->pbuffer = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
pbuffer = osg::GraphicsContext::createGraphicsContext(traits.get());
if (pbuffer.valid())
{
osg::notify(osg::NOTICE)<<"Pixel buffer has been created successfully."<<std::endl;
}
else
{
osg::notify(osg::NOTICE)<<"Pixel buffer has not been created successfully."<<std::endl;
}
}
// load the data
osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(arguments);
@ -714,7 +744,28 @@ int main(int argc, char** argv)
viewer.realize();
addCallbackToViewer(viewer, new WindowCaptureCallback(mode, position, readBuffer));
if (pbuffer.valid())
{
viewer.stopThreading();
pbuffer->realize();
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(pbuffer.get());
camera->setViewport(new osg::Viewport(0,0,width,height));
GLenum buffer = pbuffer->getTraits()->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
camera->setFinalDrawCallback(new WindowCaptureCallback(mode, position, readBuffer));
viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
viewer.startThreading();
}
else
{
addCallbackToViewer(viewer, new WindowCaptureCallback(mode, position, readBuffer));
}
return viewer.run();