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List:       kde-panel-devel
Subject:    Re: Review Request: frame plasmoid: image load and scaling with
From:       "Aaron J. Seigo" <aseigo () kde ! org>
Date:       2010-03-08 22:38:33
Message-ID: 201003081438.34447.aseigo () kde ! org
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On March 8, 2010, Sebastian Kügler wrote:
> Scaling on the GPU is a video card feature. Using a QImage (and thus having

uploading that much data to the video card and then using the hardware scaling 
may be slower than keeping the image in RAM, scaling on the CPU and then doing 
the data transfer to the card. in theory it shouldn't be, but since the GPU 
isn't just being used for this (but also for kwin compositing and any other 
app running and doing things) and since the advertised maximum texture size is 
still often 2048x2048 such large images can really put a burden on graphics 
system.

for smaller images, you're absolutely right though.

regardless, i don't think it makes any sense to store that much data in either 
VRAM or RAM for an image that is 99% of the time going to be the same size 
which is likely much smaller than the actual resolution.

-- 
Aaron J. Seigo
humru othro a kohnu se
GPG Fingerprint: 8B8B 2209 0C6F 7C47 B1EA  EE75 D6B7 2EB1 A7F1 DB43

KDE core developer sponsored by Qt Development Frameworks
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