[poppler] [PATCH] Arthur backend fixes; poppler-qt4 direct rendering

Albert Astals Cid aacid at kde.org
Mon Nov 1 17:22:43 PDT 2010

Please never answer me only, always mail the list.

A Dimarts, 2 de novembre de 2010, Matthias Fauconneau va escriure:
> > Please don't leave commented code behind, like
> > //state->transform(x, y, &x1, &y1);
> > If we don't need it, just remove it.
> > 
> > Also you seem to not use buffer anymore but didn't remove the declaration
> > 
> > + \warning This method is only supported for Arthur and Cairo Qt backends
> > +
> > + \since 0.6
> > Also i please do not to copy code from renderToImage to renderToQPainter,
> > copying code is bad. Another nice thing would be if the new method
> > returned a
> > bool so that if you actually try to use it with a Splash backend you
> > return false.
> Fixed them all.


> > There is no Cairo Qt backend
> Actually there is (I even tried it), but it is much worse than using
> Arthur directly

No, there is not, there are unofficial patches for it, but that's all.

> > Thanks for the work.
> I also fixed two memory leaks in Arthur. They probably didn't show
> because nobody was calling the renderer 40 times per seconds :D

It's wrong, look at how splashoutputdev does it (yes i know it sucks)

> I attached two screenshots so you can compare the backends on these
> particular files.
> I don't know why Qt OpenGL rendering is "fatter" but I like it.
> While with Splash, the notes heads and tails are not quite fitting.

No way we can tell without having the files, probably Arthur is doing 
antialias and Splash is not.


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