[cairo] Extending XRender to support non-blurry edges for transformations(?)

Bill Spitzak spitzak at thefoundry.co.uk
Wed Jul 30 16:50:21 PDT 2008

Carl Worth wrote:

> Beyond that, though, there's an issue of what do you actually want? You
> mentioned wanting to draw a rotated image without using PAD sampling and
> a mask. And you do want BILINEAR filtering internal to the image, but
> not on the edges. Do you see that you are necessarily asking for a
> non-antialiased result around the edge of the image? Is this what you
> really want?

I think he is asking for an antialiased but "sharp" result.

It should be exactly the same as if the filtering was set it to 
EXTEND_REPEAT and set the clip region to the rectangle surrounding the 
picture (transformed by the CTM).

Bill Spitzak, Senior Software Engineer
The Foundry, 1 Wardour Street, London, W1D 6PA, UK
Tel: +44 (0)20 7434 0449 * Fax: +44 (0)20 7434 1550 * Web: 
The Foundry Visionmongers Ltd * Registered in England and Wales No: 4642027

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