Details
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Bug
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Resolution: Done
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P1: Critical
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5.1.0
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None
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Windows 8 64 bit, Qt 5.1.0, MinGW 4.8 32 bit
Windows 7 64 bit, Qt 5.1.0, MinGW 4.8 32 bit
Ubuntu 12.04 64 bit, Qt 5.1.0, gcc 4.6.3
Description
When using QGLWidget::renderText function lot's of memory gets lost.
The first time this issue occured was on a big project. There I have 6 QGLWidget's which show a 2D OpenGL interface. After commenting out different code fragments, I could bring it down to this function. The two attached screenshots are from an analysis of the original project.
I also attached a simple Demo app, where you can spawn widgets by pressing a button. You will see with one or two widgets, the memory will grow by a few kilobytes per second. But if you have six widgets (like I have in my project), it's nearly 10MB per second.
