2013/6/11 Robert Osfield <robert.osfi...@gmail.com>
> You can use osg::PixelBufferObject to assist with transferring data to and
> from the GPU. The
> OpenSceneGraph/osgscreencapture example illustrates the use of PBO's
> including buffering.
>
Hmm, strange. The osgscreencapture sample does not use the
osg::PixelBufferObject class at all. For example it creates the pbo's like
this:
if (pbo==0)
{
ext->glGenBuffers(1, &pbo);
ext->glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, pbo);
ext->glBufferData(GL_PIXEL_PACK_BUFFER_ARB,
image->getTotalSizeInBytes(), 0, GL_STREAM_READ);
Is there any particular reason why it's done this way, instead of relying
on the osg PixelBufferObject?
Christian
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