It is slow. I have plenty of RAM. Running ./chip takes about 1.9G with my hack. I have 8G RAM on my machine and it is available.
Beginner
Re: slowness QGraphicsView setScene
It is slow. I have plenty of RAM. Running ./chip takes about 1.9G with my hack. I have 8G RAM on my machine and it is available.
The "Q"
Re: slowness QGraphicsView setScene
So what's the backtrace for?Originally Posted by rk123
Anyway, you can make things faster if you disable indexing in the scene. Even in the backtrace you can see there is BSP algorithm involved there. On the other hand bsp indexing shouldn't happen when you set the scene on a view but rather when you add items to the scene...unless GV delays building the index until you access some method that might actually need it. Is there something specific you are doing before calling setScene()?
Your biological and technological distinctiveness will be added to our own. Resistance is futile.
Please ask Qt related questions on the forum and not using private messages or visitor messages.
Beginner
Re: slowness QGraphicsView setScene
Yes, I see the BSP algorithm kick in. I am not sure why. This is coming from QT:
qt-everywhere-opensource-src-4.6.1/demos/chip
If you put in the patch I had mentioned, you will see that too.
Hence, my question of if I am doing something wrong or is it a QT bug.
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