FGFS-4.1/OpenSceneGraph
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Disable the glFinishBarrierOp usage as glFinish was spin locking the CPU :-|

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This commit is contained in:
Robert Osfield
2005-08-31 12:49:23 +00:00
parent c1ebc87c2c
commit 8686ed3136
1 changed files with 5 additions and 4 deletions
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9
examples/osgcamera/osgcamera.cpp
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@@ -142,7 +142,7 @@ int main( int argc, char **argv )
updateVisitor.setFrameStamp(frameStamp.get());
unsigned int numberCameras = 3;
unsigned int numberCameras = 1;
unsigned int xpos = 0;
unsigned int ypos = 400;
unsigned int width = 400;
@@ -242,7 +242,8 @@ int main( int argc, char **argv )
// we can put a finish in to gate rendering throughput, so that each new frame starts with a clean sheet.
// you should only enable one of these, doFinishBeforeNewDraw will allow for the better parallism of the two finish approaches
bool doFinishBeforeNewDraw = true;
// note, both are disabled right now, as glFinish is spin locking the CPU, not something that we want...
bool doFinishBeforeNewDraw = false;
bool doFinishAfterSwap = false;
// third add the frame for each camera.
@@ -287,7 +288,7 @@ int main( int argc, char **argv )
osg::GraphicsContext* context = *gitr;
context->getGraphicsThread()->add(frameEndBarrierOp.get(), false);
context->getGraphicsThread()->add(preSwapBarrierOp.get(), false);
// context->getGraphicsThread()->add(preSwapBarrierOp.get(), false);
context->getGraphicsThread()->add(swapOp.get(), false);
// optionally add finish barrier to ensure that we don't do any other graphics work till the current OpenGL commands are complete.
@@ -310,7 +311,7 @@ int main( int argc, char **argv )
frameStamp->setReferenceTime(osg::Timer::instance()->delta_s(start_tick,current_tick));
frameStamp->setFrameNumber(frameNum++);
std::cout<<"Frame rate "<<1.0/osg::Timer::instance()->delta_s(previous_tick,current_tick)<<std::endl;
//std::cout<<"Frame rate "<<1.0/osg::Timer::instance()->delta_s(previous_tick,current_tick)<<std::endl;
previous_tick = current_tick;