Too-large transparency groups
James Cloos <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
I'm told that gecko's bug whereby even a single, small ARGB image generates full-page transparency groups is definitively in cairo and not in how gecko calls cairo. And that bugs have been reported about it. But I cannot find those bugs searching in the pdf/ps driver categories. An image, even with alpha, composited onto a constant background should immediately be blended pixel per pixel, rather than generating a trans- parency group. The result of such a blending is fixed; there are no vector elements, only pixels. And even if there were, when an alpha-image is pasted atop a background, the transparency group shouldn't ever need to be larger than the image. Which is already a raster, and thus doesn't need (or mind :) rasterization. Does anyone have a pointer? Thoughts or work towards a fix? I haven't printed from the web recently, but the last few times I did I had to print to pdf, edit the pdf to remove the ARGB logo and manualy convert to ps to get a legible print. (9600x600 text is a *hell* of a lot easier to read than the blotchy, blurry crap that results from low-resolution rasters of each page.) -JimC -- James Cloos <[email protected]> OpenPGP: 1024D/ED7DAEA6 -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo