Il 07/03/2016 15:04, Jani Tykka ha scritto:
It seems that computers with separate GPU there is a decent amount of CPU utilised. We are running into problems if the machine lacks GPU, then with large images the CPU usage grows drastically. Any suggestions how to improve large image painting on QQuickItem? With Quick1 and painting directly on HWND/CocoaWindow we didn't experience this high CPU usage.
Have you run your application into a CPU/GPU profiler (vTune, NSight, ...) to better understand what's going on? Note that the current code path may trigger an unwanted conversion to ARGB32_Premultiplied.
Cheers, -- Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer KDAB (UK) Ltd., a KDAB Group company | Tel: UK +44-1625-809908 KDAB - The Qt Experts
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