I continue to render a black screen :(
How do I have to use de postdrawcallback ?
I m using this code:
bool myKeyboardEventHandler::handle(const osgGA::GUIEventAdapter&
ea,osgGA::GUIActionAdapter& aa)
{
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYDOWN):
{
switch(ea.getKey())
{
case 'a':
image->readPixels(0,0,200,200,
GL_RGB,GL_UNSIGNED_BYTE);
osgDB::writeImageFile(*image,"capture.bmp");
return false;
break;
...
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