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YosysHQ.nextpnr/common
Mateusz Zalega d03291eeb1 gui: improved FPGAViewWidget::paintGL() performance
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>
2018-10-23 15:43:51 +02:00
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