Hi all, For screenshot and printing purpose, i am trying to change the background color before the render pass and screenshot writing.
When i want to take a screenshot, i try to change the clear color with camera->setClearColor(xxx) and set a flag at true to activate the screenshot as camera final draw processing. This change is done before osg::Viewer::frame() call so the glClearColor call should be done after the setClearColor call. But the clear color change is taken into account the next frame, so my screenshot is taken with the wrong background color. If i am not wrong, the call order is * - camera->setClearColor( anyColor ) - event handlers - node callbacks - pre camera draw callback - rendering - post camera draw callback ( screenshot taken here ) - camera->setClearColor( initial color )* For some reasons i do not want to have to wait a new frame to take my screenshot, so i am wondering if there is a way to force the background color change instantly ? Thank you for your attention, Regards, Harold
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