Hi,
I tried to fix it a few more times, but I can't. It's working for color but not
for the depth buffer.
When I execute the following code I get the variables texture2D and depth
filled with white color. I draw the image and the texture on a rectangle.
Thanks for help,
jojo
Code:
osgViewer::Viewer* v = new osgViewer::Viewer;
v->setCameraManipulator(new osgGA::TrackballManipulator());
v->getCameraManipulator()->setHomePosition(getCameraPosition2(),
getLookAtPoint(), getUpVector());
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
osg::GraphicsContext::Traits;
traits->target = osg::Camera::FRAME_BUFFER_OBJECT;
traits->x =0;
traits->y = 0;
traits->width = 720;
traits->height = 576;
traits->windowDecoration = false;
traits->doubleBuffer = false;
traits->sharedContext = 0;
traits->pbuffer = true;
osg::GraphicsContext* _gc=
osg::GraphicsContext::createGraphicsContext(traits.get());
v->getCamera()->setGraphicsContext(_gc);
osg::Camera* camera = v->getCamera();
camera->setViewport(new osg::Viewport(0,0,720,576));
double fovy, aspectRatio, zNear, zFar;
camera->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
std::cout<< fovy << " " << aspectRatio<< " " << zNear << " " << zFar<<"\n";
fovy+=41.0;
camera->setProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
std::cout<< fovy << " " << aspectRatio<< " " << zNear << " " << zFar<<"\n";
v->setSceneData(osgDB::readNodeFile("Scene1.osg"));
v->setDataVariance(osg::Object::DYNAMIC);
v->setThreadingModel(osgViewer::Viewer::SingleThreaded);
v->realize();
osg::ref_ptr<osg::Image> depth = new osg::Image;
osg::ref_ptr<osg::Image> color = new osg::Image;
color->allocateImage(720, 576, 1, GL_RGBA, GL_UNSIGNED_BYTE);
depth->allocateImage(720, 576, 1, GL_DEPTH_COMPONENT, GL_FLOAT);
camera->attach(osg::Camera::COLOR_BUFFER, color.get());
camera->attach(osg::Camera::DEPTH_BUFFER, depth.get());
osg::ref_ptr<osg::Texture2D> texture2D = new osg::Texture2D;
texture2D->setTextureSize(720, 576);
texture2D->setInternalFormat(GL_DEPTH_COMPONENT);
texture2D->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture2D->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
camera->attach(osg::Camera::DEPTH_BUFFER, texture2D.get(), 0, 0, false);
// camera->attach(osg::Camera::DEPTH_BUFFER, depth.get(),0,0);
v->frame();
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=11207#11207
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