[poppler] Blend mode enhancements for splash, patch for CMYK branch

[Albert Astals Cid]

El Divendres, 13 de juliol de 2012, a les 10:04:53, Thomas Freitag va 
escriure:
> Hi Albert,
> 
> After commiting the patch for Bug #49523 I can now continue to process
> my splash queue:
> When implementing DeviceN support for splash I already encountered, that
> the blend mode support in the CMYK branch is somewhat less than perfect.
> But this has nothing to do with DeviceN itself, and because it is just a
> small change I continue with this one.
> The attached patch improves the blend mode handling in splash in the
> CMYK branch. You can test it i.e. with the -jpegcmyk option of pdftoppm
> and see the improvements for standard separable blend modes on
> 1und1_DSL_Flyer_partner.pdf, which uses at least 5 different standard
> separable blend modes as far as I can remember.
> The changes for the standard nonseparable blend modes just repair the
> changes necessary for the standard separable blend modes so that the
> output for them is still the same. You can check that at least with some
> of the modes with the test_*alex*.pdf files I sent You a few month ago
> in private.

Pushed!

Albert

> 
> Cheers,
> Thomas