Nouveau - Mar 2010 - RFC: bicubic filtering patch

Hey,

There's one relevant patch in the F13 DDX package that hasn't been
pushed into git still.

The patch simply switches off the bicubic filtering if we're scaling the
image by less than 200% in either direction in order to prevent some
excessive blurriness in the image (very noticable with the gstreamer
xvideo test).

The patch has been in the Fedora package since F11 as a user reported
the issue as a bug, and the radeon driver has similar code, but I
thought I'd ask for opinions before I pushed this to git.

Ben.

On Sun, Mar 28, 2010 at 23:54, Ben Skeggs <skeggsb at gmail.com> wrote:
> Hey,
>
> There's one relevant patch in the F13 DDX package that hasn't been
> pushed into git still.
>
> The patch simply switches off the bicubic filtering if we're scaling
the
> image by less than 200% in either direction in order to prevent some
> excessive blurriness in the image (very noticable with the gstreamer
> xvideo test).
>
> The patch has been in the Fedora package since F11 as a user reported
> the issue as a bug, and the radeon driver has similar code, but I
> thought I'd ask for opinions before I pushed this to git.
>
>
Yup, that code was never intended for <2x scaling.

Stephane
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