Hi Jack,
Yes, the CPU-based rasterizer compilation defaults to nearest for scaling.
It can be changed to support linear interpolation via configuring using the
--with-smooth-scaling option. There is also optional render option flags that
can be set using IDirectFBSurface::SetRenderOptions. Specifically,
DSRO_SMOOTH_UPSCALE and DSRO_SMOOTH_DOWNSCALE.
Timothy
--
Timothy Strelchun
CE Software Engineering
Digital Home Group
Intel Corporation
The views expressed above are my own and not those of Intel
________________________________
From: directfb-dev-boun...@directfb.org
[mailto:directfb-dev-boun...@directfb.org] On Behalf Of Jack W.
Sent: Tuesday, February 09, 2010 5:08 PM
To: directfb-dev@directfb.org
Subject: [directfb-dev] Does StretchBlit use nearest-neighbour
interpolation?
Hi,
The result of the StretchBlit looks like generated by nearest neighbour
interpolation. Is it true? If use bi-linear interpolation, how about the
performance? Very slow? Thanks!
-Jack
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