Review Request: frame plasmoid: image load and scaling with threads
Aaron J. Seigo
aseigo at kde.org
Mon Mar 8 23:38:33 CET 2010
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
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KDE core developer sponsored by Qt Development Frameworks
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