The osgscreencapture sample does the following:
Code:
if (gc->getTraits()->alpha)
{
osg::notify(osg::NOTICE)<<"Select GL_BGRA read back
format"<<std::endl;
_pixelFormat = GL_BGRA;
}
else
{
osg::notify(osg::NOTICE)<<"Select GL_BGR read back
format"<<std::endl;
_pixelFormat = GL_BGR;
}
to determine the pixelFormat.
When I look at the traits, I see what is attached. It has a format of "0"
which of course doesn't match up with any of the openGL formats that I see
that are all in the 0x8xxx range
Is there some other way to get the pixelFormat? Why/how could the memcpy be
1/2 speed when using multiple PBOs?
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=22474#22474
Attachments:
http://forum.openscenegraph.org//files/capture_900.png
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