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Code Issues Releases Wiki Activity

Fix NotifyDrawCompletedCallback in single threaded mode

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This commit is contained in:
scrawl 2015-08-02 17:57:50 +02:00
parent e73c115ff5
commit 88c61ed2b6
1 changed files with 23 additions and 6 deletions
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29
apps/openmw/mwrender/renderingmanager.cpp
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@ -437,12 +437,31 @@ namespace MWRender
class NotifyDrawCompletedCallback : public osg::Camera::DrawCallback
{
public:
NotifyDrawCompletedCallback()
: mDone(false)
{
}
virtual void operator () (osg::RenderInfo& renderInfo) const
{
mMutex.lock();
mDone = true;
mMutex.unlock();
mCondition.signal();
}
void waitTillDone()
{
mMutex.lock();
if (mDone)
return;
mCondition.wait(&mMutex);
mMutex.unlock();
}
mutable OpenThreads::Condition mCondition;
mutable OpenThreads::Mutex mMutex;
mutable bool mDone;
};
void RenderingManager::screenshot(osg::Image *image, int w, int h)
@ -476,15 +495,13 @@ namespace MWRender
mRootNode->addChild(rttCamera);
mViewer->frame(mViewer->getFrameStamp()->getSimulationTime());
// The draw needs to complete before we can copy back our image.
osg::ref_ptr<NotifyDrawCompletedCallback> callback (new NotifyDrawCompletedCallback);
rttCamera->setFinalDrawCallback(callback);
OpenThreads::Mutex m;
m.lock();
callback->mCondition.wait(&m);
m.unlock();
mViewer->frame(mViewer->getFrameStamp()->getSimulationTime());
callback->waitTillDone();
rttCamera->removeChildren(0, rttCamera->getNumChildren());
rttCamera->setGraphicsContext(NULL);