Hi,
He, Yefei wrote:
Hello, Robert,
I noticed that when using the osgviewer, the draw and swapbuffers
operations take place within the same function call,
ViewerBase::renderingTraversals(). Before, with Producer, I can call
Producer::Camera::frame(false) to perform draw operation without
swapping the buffers, and do swapbuffers later explicitly. This way
I can insert my own vertical sync code or some other process between
draw and swapbuffers. Is there already something similar provided for
doing this with osgviewer? The only sample code that calls swapbuffers
explicitly is osgSlice but that program doesn't use osgviewer, rather
it creates sceneView and graphicsContext directly. I'm hesitant to
break up ViewerBase::renderingTraversals() on my own since there are
thread sync related code around the loop that calls
GraphicsContext::runOperations() and the loop that calls
GraphicsContext::swapBuffers(), and I'm worried about any implications
of interrupting it.
I'm not sure, but doesn't swapBuffers just call some other windowing
implementation swapbuffersimplementation function? Maybe you can
override that?
jp
Thanks,
Yefei
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