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Signed-off-by: gatecat <gatecat@ds0.me>
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Signed-off-by: D. Shah <dave@ds0.me>
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Signed-off-by: David Shah <dave@ds0.me>
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Profiling revealed that memcpy() in QOpenGLBuffer::allocate() had been taking
the most time during paintGL() calls. I've been able to take the CPU usage
down to about 1/4 of its previous values by caching elements in VBOs and
updating them only after subsequent calls to renderGraphicElement().
Signed-off-by: Mateusz Zalega <mateusz@appliedsourcery.com>
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