Does Xorg'x XRender implementation support "better-than-bilinear" interpolation?

[Maarten Maathuis]

On Mon, Sep 10, 2012 at 11:05 PM, Clemens Eisserer <linuxhippy at gmail.com> wrote:
> Hi,
>
> I just realized that at least on my machine (fedora 17 + intel 20.2),
> the only interpolation modes offered by Xrender are: {nearest ,
> bilinear , convolution, fast , good, best}
> I always thought best translates into something better than bilinear,
> but it seems to be just equal to it.
>
> Is there any way to archive bicubic interpolation or any other
> higher-than-bilinear interpolation using xrender?
> As Java2D offers bicubic interpolation, it would mean a fallback to
> software-rendering every time a program requests high-quality
> interpolation.
>
> Thank you in advance, Clemens
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I don't see it in the renderproto, so it's probably not possible
without a spec extension.

http://cgit.freedesktop.org/xorg/proto/renderproto/tree/render.h

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